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GNU C Library master sources branch master updated. glibc-2.26-321-g07b4f49


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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=07b4f49db285f39594859c58893e3404b33200dd

commit 07b4f49db285f39594859c58893e3404b33200dd
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Tue Sep 5 11:02:24 2017 -0300

    posix: Use enum for __glob_pattern_type result
    
    This patch replaces the internal integer constant from
    __glob_pattern_type return with a proper enum.
    
    Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
    for all major architectures.
    
    	* posix/glob_internal.h (glob_pattern_type_t): New enumeration.
    	(__glob_pattern_type): Use __glob_pat_types.
    	* posix/glob_pattern_p.c (__glob_pattern_p): Likewise.
    	* posix/glob.c (glob): Likewise.
    	(glob_in_dir): Likewise.

diff --git a/ChangeLog b/ChangeLog
index b34d724..4f4635f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2017-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	* posix/glob_internal.h (GLOBPAT_NONE, GLOBPAT_SPECIAL)
+	(GLOBPAT_BACKSLASH, GLOBPAT_BRACKET): New constants.
+	* posix/glob_internal.h (__glob_pattern_type):
+	* posix/glob.c (glob):
+	* posix/glob_pattern_p.c (__glob_pattern_p):
+	Use them.
+
 	* sysdeps/unix/sysv/linux/arm/glob64.c: Remove file.
 	* sysdeps/unix/sysv/linux/i386/glob64.c: Likewise.
 	* sysdeps/unix/sysv/linux/m68k/glob64.c: Likewise.
diff --git a/posix/glob.c b/posix/glob.c
index a47507a..c699177 100644
--- a/posix/glob.c
+++ b/posix/glob.c
@@ -902,7 +902,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
      [ which we handle the same, using fnmatch.  Broken unterminated
      pattern bracket expressions ought to be rare enough that it is
      not worth special casing them, fnmatch will do the right thing.  */
-  if (meta & 5)
+  if (meta & (GLOBPAT_SPECIAL | GLOBPAT_BRACKET))
     {
       /* The directory name contains metacharacters, so we
 	 have to glob for the directory, and then glob for
@@ -1043,7 +1043,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
       size_t old_pathc = pglob->gl_pathc;
       int orig_flags = flags;
 
-      if (meta & 2)
+      if (meta & GLOBPAT_BACKSLASH)
 	{
 	  char *p = strchr (dirname, '\\'), *q;
 	  /* We need to unescape the dirname string.  It is certainly
@@ -1241,14 +1241,14 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
                        / sizeof init_names->name[0]);
 
   meta = __glob_pattern_type (pattern, !(flags & GLOB_NOESCAPE));
-  if (meta == 0 && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
+  if (meta == GLOBPAT_NONE && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
     {
       /* We need not do any tests.  The PATTERN contains no meta
 	 characters and we must not return an error therefore the
 	 result will always contain exactly one name.  */
       flags |= GLOB_NOCHECK;
     }
-  else if (meta == 0)
+  else if (meta == GLOBPAT_NONE)
     {
       union
       {
diff --git a/posix/glob_internal.h b/posix/glob_internal.h
index 12c9366..d118b35 100644
--- a/posix/glob_internal.h
+++ b/posix/glob_internal.h
@@ -19,35 +19,43 @@
 #ifndef GLOB_INTERNAL_H
 # define GLOB_INTERNAL_H
 
+enum
+{
+  GLOBPAT_NONE      = 0x0,
+  GLOBPAT_SPECIAL   = 0x1,
+  GLOBPAT_BACKSLASH = 0x2,
+  GLOBPAT_BRACKET   = 0x4
+};
+
 static inline int
 __glob_pattern_type (const char *pattern, int quote)
 {
   const char *p;
-  int ret = 0;
+  int ret = GLOBPAT_NONE;
 
   for (p = pattern; *p != '\0'; ++p)
     switch (*p)
       {
       case '?':
       case '*':
-        return 1;
+        return GLOBPAT_SPECIAL;
 
       case '\\':
         if (quote)
           {
             if (p[1] != '\0')
               ++p;
-            ret |= 2;
+            ret |= GLOBPAT_BACKSLASH;
           }
         break;
 
       case '[':
-        ret |= 4;
+        ret |= GLOBPAT_BRACKET;
         break;
 
       case ']':
         if (ret & 4)
-          return 1;
+          return GLOBPAT_SPECIAL;
         break;
       }
 
diff --git a/posix/glob_pattern_p.c b/posix/glob_pattern_p.c
index a17d337..8489106 100644
--- a/posix/glob_pattern_p.c
+++ b/posix/glob_pattern_p.c
@@ -28,6 +28,6 @@
 int
 __glob_pattern_p (const char *pattern, int quote)
 {
-  return __glob_pattern_type (pattern, quote) == 1;
+  return __glob_pattern_type (pattern, quote) == GLOBPAT_SPECIAL;
 }
 weak_alias (__glob_pattern_p, glob_pattern_p)

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=116f1c64d8d84ecbf269ac70a35657aa057f26c3

commit 116f1c64d8d84ecbf269ac70a35657aa057f26c3
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Sep 4 18:07:03 2017 -0300

    posix: Consolidate Linux glob implementation
    
    This patch consolidates the glob implementation.  The main changes are:
    
      * On Linux all implementation now uses the default one at
        sysdeps/unix/sysv/linux/glob{free}{64}.c with the exception
        of alpha (which requires specific versioning) and s390-32 (which
        different than other 32 bits ports it does not add a compat one
        symbol for 2.1 version).
    
      * The default implementation uses XSTAT_IS_XSTAT64 to define whether
        both glob{free} and glob{free}64 should be different implementations.
        For archictures that define XSTAT_IS_XSTAT64, glob{free} is an alias
        to glob{free}64.
    
      * Move i386 olddirent.h header to Linux default directory, since it is
        the only header with this name and it is shared among different
        architectures (and used on compat glob symbol as well).
    
    Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
    for all major architectures.
    
    	* sysdeps/unix/sysv/linux/arm/glob64.c: Remove file.
    	* sysdeps/unix/sysv/linux/i386/glob64.c: Likewise.
    	* sysdeps/unix/sysv/linux/m68k/glob64.c: Likewise.
    	* sysdeps/unix/sysv/linux/mips/mips64/n64/glob64.c: Likewise.
    	* sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c: Likewise.
    	* sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c: Likewise.
    	* sysdeps/unix/sysv/linux/sparc/sparc32/glob64.c: Likewise.
    	* sysdeps/unix/sysv/linux/wordsize-64/glob64.c: Likewise.
    	* sysdeps/unix/sysv/linux/wordsize-64/globfree64.c: Likewise.
    	* sysdeps/unix/sysv/linux/x86_64/x32/glob.c: Likewise.
    	* sysdeps/unix/sysv/linux/x86_64/x32/globfree.c: Likewise.
    	* sysdeps/wordsize-64/glob.c: Likewise.
    	* sysdeps/wordsize-64/glob64.c: Likewise.
    	* sysdeps/wordsize-64/globfree64.c: Likewise.
    	* sysdeps/unix/sysv/linux/glob.c: New file.
    	* sysdeps/unix/sysv/linux/glob64.c: Likewise.
    	* sysdeps/unix/sysv/linux/globfree.c: Likewise.
    	* sysdeps/unix/sysv/linux/globfree64.c: Likewise.
    	* sysdeps/unix/sysv/linux/s390/s390-32/glob64.c: Likewise.
    	* sysdeps/unix/sysv/linux/oldglob.c [SHLIB_COMPAT]: Also
    	adds !GLOB_NO_OLD_VERSION as an extra condition.
    	* sysdeps/unix/sysv/linux/i386/alphasort64.c: Include olddirent.h
    	using relative path instead of absolute one.
    	* sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise.
    	* sysdeps/unix/sysv/linux/i386/readdir64.c: Likewise.
    	* sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise.
    	* sysdeps/unix/sysv/linux/i386/versionsort64.c: Likewise.
    	* sysdeps/unix/sysv/linux/i386/olddirent.h: Move to ...
    	* sysdeps/unix/sysv/linux//olddirent.h: ... here.

diff --git a/ChangeLog b/ChangeLog
index 4c9334e..b34d724 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,36 @@
 2017-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	* sysdeps/unix/sysv/linux/arm/glob64.c: Remove file.
+	* sysdeps/unix/sysv/linux/i386/glob64.c: Likewise.
+	* sysdeps/unix/sysv/linux/m68k/glob64.c: Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips64/n64/glob64.c: Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c: Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c: Likewise.
+	* sysdeps/unix/sysv/linux/sparc/sparc32/glob64.c: Likewise.
+	* sysdeps/unix/sysv/linux/wordsize-64/glob64.c: Likewise.
+	* sysdeps/unix/sysv/linux/wordsize-64/globfree64.c: Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/x32/glob.c: Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/x32/globfree.c: Likewise.
+	* sysdeps/wordsize-64/glob.c: Likewise.
+	* sysdeps/wordsize-64/glob64.c: Likewise.
+	* sysdeps/wordsize-64/globfree.c: Likewise.
+	* sysdeps/wordsize-64/globfree64.c: Likewise.
+	* sysdeps/unix/sysv/linux/glob.c: New file.
+	* sysdeps/unix/sysv/linux/glob64.c: Likewise.
+	* sysdeps/unix/sysv/linux/globfree.c: Likewise.
+	* sysdeps/unix/sysv/linux/globfree64.c: Likewise.
+	* sysdeps/unix/sysv/linux/s390/s390-32/glob64.c: Likewise.
+	* sysdeps/unix/sysv/linux/oldglob.c [SHLIB_COMPAT]: Also
+	adds !GLOB_NO_OLD_VERSION as an extra condition.
+	* sysdeps/unix/sysv/linux/i386/alphasort64.c: Include olddirent.h
+	using relative path instead of absolute one.
+	* sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise.
+	* sysdeps/unix/sysv/linux/i386/readdir64.c: Likewise.
+	* sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise.
+	* sysdeps/unix/sysv/linux/i386/versionsort64.c: Likewise.
+	* sysdeps/unix/sysv/linux/i386/olddirent.h: Move to ...
+	* sysdeps/unix/sysv/linux//olddirent.h: ... here.
+
 	[BZ #1062]
 	* posix/glob.c (GET_LOGIN_NAME_MAX): Remove.
 	(glob): Use the same scratch buffer for both getlogin_r and
diff --git a/sysdeps/unix/sysv/linux/arm/glob64.c b/sysdeps/unix/sysv/linux/arm/glob64.c
deleted file mode 100644
index 82a9a29..0000000
--- a/sysdeps/unix/sysv/linux/arm/glob64.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/glob64.c>
diff --git a/sysdeps/unix/sysv/linux/i386/getdents64.c b/sysdeps/unix/sysv/linux/glob.c
similarity index 56%
copy from sysdeps/unix/sysv/linux/i386/getdents64.c
copy to sysdeps/unix/sysv/linux/glob.c
index e8b257f..057ae7f 100644
--- a/sysdeps/unix/sysv/linux/i386/getdents64.c
+++ b/sysdeps/unix/sysv/linux/glob.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+/* Find pathnames matching a pattern.  Linux version.
+   Copyright (C) 2017 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -15,25 +16,13 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#define __GETDENTS __getdents64
-#define DIRENT_TYPE struct dirent64
+#include <sys/stat.h>
+#include <kernel_stat.h>
 
-#include <sysdeps/unix/sysv/linux/getdents.c>
+#define glob64 __no_glob64_decl
+#include <posix/glob.c>
+#undef glob64
 
-#include <shlib-compat.h>
-
-#undef __READDIR
-#undef __GETDENTS
-#undef DIRENT_TYPE
-
-#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
-
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
-
-#define __GETDENTS __old_getdents64
-#define DIRENT_TYPE struct __old_dirent64
-#define kernel_dirent old_kernel_dirent
-#define kernel_dirent64 old_kernel_dirent64
-
-#include <sysdeps/unix/sysv/linux/getdents.c>
+#if XSTAT_IS_XSTAT64
+weak_alias (glob, glob64)
 #endif
diff --git a/sysdeps/unix/sysv/linux/i386/glob64.c b/sysdeps/unix/sysv/linux/glob64.c
similarity index 57%
rename from sysdeps/unix/sysv/linux/i386/glob64.c
rename to sysdeps/unix/sysv/linux/glob64.c
index 230f9fc..428bbac 100644
--- a/sysdeps/unix/sysv/linux/i386/glob64.c
+++ b/sysdeps/unix/sysv/linux/glob64.c
@@ -1,5 +1,5 @@
-/* Two glob variants with 64-bit support, for dirent64 and __olddirent64.
-   Copyright (C) 1998-2017 Free Software Foundation, Inc.
+/* Find pathnames matching a pattern.  Linux version.
+   Copyright (C) 2017 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,27 +16,36 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <dirent.h>
-#include <glob.h>
 #include <sys/stat.h>
-#include <shlib-compat.h>
+#include <kernel_stat.h>
 
-#define dirent dirent64
-#define __readdir(dirp) __readdir64 (dirp)
+#if !XSTAT_IS_XSTAT64
+# include <glob.h>
+# include <dirent.h>
+# include <sys/stat.h>
 
-#define glob_t glob64_t
-#define glob(pattern, flags, errfunc, pglob) \
+# define dirent dirent64
+# define __readdir(dirp) __readdir64 (dirp)
+
+# define glob_t glob64_t
+# define glob(pattern, flags, errfunc, pglob) \
   __glob64 (pattern, flags, errfunc, pglob)
-#define globfree(pglob) globfree64 (pglob)
+# define globfree(pglob) globfree64 (pglob)
+
+# undef stat
+# define stat stat64
 
-#undef stat
-#define stat stat64
-#undef __stat
-#define __stat(file, buf) __xstat64 (_STAT_VER, file, buf)
+# define COMPILE_GLOB64	1
 
-#define COMPILE_GLOB64	1
+# include <posix/glob.c>
 
-#include <posix/glob.c>
+# include "shlib-compat.h"
 
+# ifdef GLOB_NO_OLD_VERSION
+strong_alias (__glob64, glob64)
+libc_hidden_def (glob64)
+# else
 versioned_symbol (libc, __glob64, glob64, GLIBC_2_2);
 libc_hidden_ver (__glob64, glob64)
+# endif
+#endif /* XSTAT_IS_XSTAT64  */
diff --git a/sysdeps/unix/sysv/linux/i386/getdents64.c b/sysdeps/unix/sysv/linux/globfree.c
similarity index 56%
copy from sysdeps/unix/sysv/linux/i386/getdents64.c
copy to sysdeps/unix/sysv/linux/globfree.c
index e8b257f..48d4aec 100644
--- a/sysdeps/unix/sysv/linux/i386/getdents64.c
+++ b/sysdeps/unix/sysv/linux/globfree.c
@@ -1,4 +1,6 @@
-/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+/* Frees the dynamically allocated storage from an earlier call to glob.
+   Linux version.
+   Copyright (C) 2017 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -15,25 +17,14 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#define __GETDENTS __getdents64
-#define DIRENT_TYPE struct dirent64
+#include <sys/stat.h>
+#include <kernel_stat.h>
 
-#include <sysdeps/unix/sysv/linux/getdents.c>
+#define globfree64 __no_globfree64_decl
+#include <posix/globfree.c>
+#undef globfree64
 
-#include <shlib-compat.h>
-
-#undef __READDIR
-#undef __GETDENTS
-#undef DIRENT_TYPE
-
-#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
-
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
-
-#define __GETDENTS __old_getdents64
-#define DIRENT_TYPE struct __old_dirent64
-#define kernel_dirent old_kernel_dirent
-#define kernel_dirent64 old_kernel_dirent64
-
-#include <sysdeps/unix/sysv/linux/getdents.c>
+#if XSTAT_IS_XSTAT64
+weak_alias (globfree, globfree64)
+libc_hidden_ver (globfree, globfree64)
 #endif
diff --git a/sysdeps/unix/sysv/linux/i386/getdents64.c b/sysdeps/unix/sysv/linux/globfree64.c
similarity index 57%
copy from sysdeps/unix/sysv/linux/i386/getdents64.c
copy to sysdeps/unix/sysv/linux/globfree64.c
index e8b257f..0020466 100644
--- a/sysdeps/unix/sysv/linux/i386/getdents64.c
+++ b/sysdeps/unix/sysv/linux/globfree64.c
@@ -1,4 +1,6 @@
-/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+/* Frees the dynamically allocated storage from an earlier call to glob.
+   Linux version.
+   Copyright (C) 2017 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -15,25 +17,20 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#define __GETDENTS __getdents64
-#define DIRENT_TYPE struct dirent64
+#include <sys/stat.h>
+#include <kernel_stat.h>
 
-#include <sysdeps/unix/sysv/linux/getdents.c>
+#if !XSTAT_IS_XSTAT64
 
-#include <shlib-compat.h>
+# include <glob.h>
 
-#undef __READDIR
-#undef __GETDENTS
-#undef DIRENT_TYPE
+# define glob_t glob64_t
+# define globfree(pglob) globfree64 (pglob)
 
-#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
+# undef stat
+# define stat stat64
 
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
+# include <posix/globfree.c>
 
-#define __GETDENTS __old_getdents64
-#define DIRENT_TYPE struct __old_dirent64
-#define kernel_dirent old_kernel_dirent
-#define kernel_dirent64 old_kernel_dirent64
-
-#include <sysdeps/unix/sysv/linux/getdents.c>
+libc_hidden_def (globfree64)
 #endif
diff --git a/sysdeps/unix/sysv/linux/i386/alphasort64.c b/sysdeps/unix/sysv/linux/i386/alphasort64.c
index d5fd47a..04b29b6 100644
--- a/sysdeps/unix/sysv/linux/i386/alphasort64.c
+++ b/sysdeps/unix/sysv/linux/i386/alphasort64.c
@@ -30,7 +30,7 @@ versioned_symbol (libc, __alphasort64, alphasort64, GLIBC_2_2);
 
 #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
 
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
+#include <olddirent.h>
 
 int
 __old_alphasort64 (const struct __old_dirent64 **a,
diff --git a/sysdeps/unix/sysv/linux/i386/getdents64.c b/sysdeps/unix/sysv/linux/i386/getdents64.c
index e8b257f..2010bbf 100644
--- a/sysdeps/unix/sysv/linux/i386/getdents64.c
+++ b/sysdeps/unix/sysv/linux/i386/getdents64.c
@@ -28,7 +28,7 @@
 
 #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
 
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
+#include <olddirent.h>
 
 #define __GETDENTS __old_getdents64
 #define DIRENT_TYPE struct __old_dirent64
diff --git a/sysdeps/unix/sysv/linux/i386/readdir64.c b/sysdeps/unix/sysv/linux/i386/readdir64.c
index de8669f..da3defd 100644
--- a/sysdeps/unix/sysv/linux/i386/readdir64.c
+++ b/sysdeps/unix/sysv/linux/i386/readdir64.c
@@ -31,7 +31,7 @@ versioned_symbol (libc, __readdir64, readdir64, GLIBC_2_2);
 
 #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
 
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
+#include <olddirent.h>
 
 #define __READDIR attribute_compat_text_section __old_readdir64
 #define __GETDENTS __old_getdents64
diff --git a/sysdeps/unix/sysv/linux/i386/readdir64_r.c b/sysdeps/unix/sysv/linux/i386/readdir64_r.c
index 344fd53..8c0262d 100644
--- a/sysdeps/unix/sysv/linux/i386/readdir64_r.c
+++ b/sysdeps/unix/sysv/linux/i386/readdir64_r.c
@@ -31,7 +31,7 @@ versioned_symbol (libc, __readdir64_r, readdir64_r, GLIBC_2_2);
 
 #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
 
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
+#include <olddirent.h>
 
 #define __READDIR_R attribute_compat_text_section __old_readdir64_r
 #define __GETDENTS __old_getdents64
diff --git a/sysdeps/unix/sysv/linux/i386/versionsort64.c b/sysdeps/unix/sysv/linux/i386/versionsort64.c
index 3e1c6ea..87f2f95 100644
--- a/sysdeps/unix/sysv/linux/i386/versionsort64.c
+++ b/sysdeps/unix/sysv/linux/i386/versionsort64.c
@@ -30,7 +30,7 @@ versioned_symbol (libc, __versionsort64, versionsort64, GLIBC_2_2);
 
 #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
 
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
+#include <olddirent.h>
 
 int
 __old_versionsort64 (const struct __old_dirent64 **a,
diff --git a/sysdeps/unix/sysv/linux/m68k/glob64.c b/sysdeps/unix/sysv/linux/m68k/glob64.c
deleted file mode 100644
index 82a9a29..0000000
--- a/sysdeps/unix/sysv/linux/m68k/glob64.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/glob64.c>
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/glob64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/glob64.c
deleted file mode 100644
index 33918ea..0000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/glob64.c
+++ /dev/null
@@ -1 +0,0 @@
-/* glob64 is in glob.c */
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c
deleted file mode 100644
index abc35fd..0000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c
+++ /dev/null
@@ -1 +0,0 @@
-/* glob64 is in globfree64.c */
diff --git a/sysdeps/unix/sysv/linux/i386/olddirent.h b/sysdeps/unix/sysv/linux/olddirent.h
similarity index 100%
rename from sysdeps/unix/sysv/linux/i386/olddirent.h
rename to sysdeps/unix/sysv/linux/olddirent.h
diff --git a/sysdeps/unix/sysv/linux/oldglob.c b/sysdeps/unix/sysv/linux/oldglob.c
index 8233e57..5402450 100644
--- a/sysdeps/unix/sysv/linux/oldglob.c
+++ b/sysdeps/unix/sysv/linux/oldglob.c
@@ -1,12 +1,13 @@
 #include <shlib-compat.h>
 
-#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
+#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2) \
+    && !defined(GLOB_NO_OLD_VERSION)
 
 #include <dirent.h>
 #include <glob.h>
 #include <sys/stat.h>
 
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
+#include <olddirent.h>
 
 int __old_glob64 (const char *__pattern, int __flags,
 		  int (*__errfunc) (const char *, int),
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c
deleted file mode 100644
index 82a9a29..0000000
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/glob64.c>
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/glob64.c b/sysdeps/unix/sysv/linux/s390/s390-32/glob64.c
new file mode 100644
index 0000000..d220e22
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/glob64.c
@@ -0,0 +1,2 @@
+#define GLOB_NO_OLD_VERSION
+#include <sysdeps/unix/sysv/linux/glob64.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/glob64.c b/sysdeps/unix/sysv/linux/sparc/sparc32/glob64.c
deleted file mode 100644
index 82a9a29..0000000
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/glob64.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/unix/sysv/linux/i386/glob64.c>
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/glob64.c b/sysdeps/unix/sysv/linux/wordsize-64/glob64.c
deleted file mode 100644
index eab7703..0000000
--- a/sysdeps/unix/sysv/linux/wordsize-64/glob64.c
+++ /dev/null
@@ -1,2 +0,0 @@
-/* This file is here so sysdeps/gnu/glob64.c doesn't take precedence.  */
-#include <sysdeps/wordsize-64/glob64.c>
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/globfree64.c b/sysdeps/unix/sysv/linux/wordsize-64/globfree64.c
deleted file mode 100644
index af035e1..0000000
--- a/sysdeps/unix/sysv/linux/wordsize-64/globfree64.c
+++ /dev/null
@@ -1,2 +0,0 @@
-/* This file is here so sysdeps/gnu/glob64.c doesn't take precedence.  */
-#include <sysdeps/wordsize-64/globfree64.c>
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/glob.c b/sysdeps/unix/sysv/linux/x86_64/x32/glob.c
deleted file mode 100644
index e542747..0000000
--- a/sysdeps/unix/sysv/linux/x86_64/x32/glob.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/wordsize-64/glob.c>
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/globfree.c b/sysdeps/unix/sysv/linux/x86_64/x32/globfree.c
deleted file mode 100644
index b76a761..0000000
--- a/sysdeps/unix/sysv/linux/x86_64/x32/globfree.c
+++ /dev/null
@@ -1 +0,0 @@
-#include <sysdeps/wordsize-64/globfree.c>
diff --git a/sysdeps/wordsize-64/glob.c b/sysdeps/wordsize-64/glob.c
deleted file mode 100644
index 954e8d3..0000000
--- a/sysdeps/wordsize-64/glob.c
+++ /dev/null
@@ -1,6 +0,0 @@
-#define glob64 __no_glob64_decl
-#define globfree64 __no_globfree64_decl
-#include <posix/glob.c>
-#undef glob64
-#undef globfree64
-weak_alias (glob, glob64)
diff --git a/sysdeps/wordsize-64/glob64.c b/sysdeps/wordsize-64/glob64.c
deleted file mode 100644
index 33918ea..0000000
--- a/sysdeps/wordsize-64/glob64.c
+++ /dev/null
@@ -1 +0,0 @@
-/* glob64 is in glob.c */
diff --git a/sysdeps/wordsize-64/globfree.c b/sysdeps/wordsize-64/globfree.c
deleted file mode 100644
index ec8c35b..0000000
--- a/sysdeps/wordsize-64/globfree.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#define globfree64 __no_globfree64_decl
-#include <posix/globfree.c>
-#undef globfree64
-weak_alias (globfree, globfree64)
-libc_hidden_ver (globfree, globfree64)
diff --git a/sysdeps/wordsize-64/globfree64.c b/sysdeps/wordsize-64/globfree64.c
deleted file mode 100644
index a0f57ff..0000000
--- a/sysdeps/wordsize-64/globfree64.c
+++ /dev/null
@@ -1 +0,0 @@
-/* globfree64 is in globfree.c */

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=ffca890177bbf0980b66bc3a6d4d25c481957348

commit ffca890177bbf0980b66bc3a6d4d25c481957348
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Sep 4 17:07:16 2017 -0300

    posix: fix glob bugs with long login names
    
    Current glob implementation allows unlimited user name for home
    directory construction on GLOB_TILDE case.  To accomplish it glob
    either construct a name on stack if size are small enough (based
    on current alloca_used) or in heap otherwise.
    
    This patch simplifies storage allocation by using the same scratch
    buffer for both get_rlogin_r and getpwnam_r.
    
    This also syncs with gnulib commit 064df0b (glob: fix bugs with long
    login names).
    
    Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
    for all major architectures.
    
    	* posix/glob.c (GET_LOGIN_NAME_MAX): Remove.
    	(glob): Use the same scratch buffer for both getlogin_r and
    	getpwnam_r.  Donâ??t require preallocation of the login name.  This
    	simplifies storage allocation, and corrects the handling of
    	long login names.

diff --git a/ChangeLog b/ChangeLog
index 39d1235..4c9334e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,13 @@
 2017-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	[BZ #1062]
+	* posix/glob.c (GET_LOGIN_NAME_MAX): Remove.
+	(glob): Use the same scratch buffer for both getlogin_r and
+	getpwnam_r.  Donâ??t require preallocation of the login name.  This
+	simplifies storage allocation, and corrects the handling of
+	long login names.
+
+	[BZ #1062]
 	* posix/glob.c (glob): Port recent patches to platforms
 	lacking getpwnam_r.
 	(glob): Fix longstanding misuse of errno after getpwnam_r, which
diff --git a/posix/glob.c b/posix/glob.c
index ef620a1..a47507a 100644
--- a/posix/glob.c
+++ b/posix/glob.c
@@ -75,12 +75,6 @@
 #include <flexmember.h>
 #include <glob_internal.h>
 #include <scratch_buffer.h>
-
-#ifdef _SC_LOGIN_NAME_MAX
-# define GET_LOGIN_NAME_MAX()	sysconf (_SC_LOGIN_NAME_MAX)
-#else
-# define GET_LOGIN_NAME_MAX()	(-1)
-#endif
 
 static const char *next_brace_sub (const char *begin, int flags) __THROWNL;
 
@@ -610,67 +604,45 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      else
 		home_dir = "c:/users/default"; /* poor default */
 #else
-	      int success;
-	      char *name;
-	      int malloc_name = 0;
-	      size_t buflen = GET_LOGIN_NAME_MAX () + 1;
-
-	      if (buflen == 0)
-		/* 'sysconf' does not support _SC_LOGIN_NAME_MAX.  Try
-		   a moderate value.  */
-		buflen = 20;
-	      if (glob_use_alloca (alloca_used, buflen))
-		name = alloca_account (buflen, alloca_used);
-	      else
+	      int err;
+	      struct passwd *p;
+	      struct passwd pwbuf;
+	      struct scratch_buffer s;
+	      scratch_buffer_init (&s);
+	      while (true)
 		{
-		  name = malloc (buflen);
-		  if (name == NULL)
+		  p = NULL;
+		  err = __getlogin_r (s.data, s.length);
+		  if (err == 0)
 		    {
-		      retval = GLOB_NOSPACE;
-		      goto out;
-		    }
-		  malloc_name = 1;
-		}
-
-	      success = __getlogin_r (name, buflen) == 0;
-	      if (success)
-		{
-		  struct passwd *p;
-		  struct scratch_buffer pwtmpbuf;
-		  scratch_buffer_init (&pwtmpbuf);
 # if defined HAVE_GETPWNAM_R || defined _LIBC
-		  struct passwd pwbuf;
-
-		  while (getpwnam_r (name, &pwbuf,
-				     pwtmpbuf.data, pwtmpbuf.length, &p)
-			 == ERANGE)
-		    {
-		      if (!scratch_buffer_grow (&pwtmpbuf))
-			{
-			  retval = GLOB_NOSPACE;
-			  goto out;
-			}
-		    }
+		      size_t ssize = strlen (s.data) + 1;
+		      err = getpwnam_r (s.data, &pwbuf, s.data + ssize,
+					s.length - ssize, &p);
 # else
-		  p = getpwnam (name);
+		      p = getpwnam (s.data);
+		      if (p == NULL)
+			err = errno;
 # endif
-		  if (p != NULL)
+		    }
+		  if (err != ERANGE)
+		    break;
+		  if (!scratch_buffer_grow (&s))
 		    {
-		      home_dir = strdup (p->pw_dir);
-		      malloc_home_dir = 1;
-		      if (home_dir == NULL)
-			{
-			  scratch_buffer_free (&pwtmpbuf);
-			  retval = GLOB_NOSPACE;
-			  goto out;
-			}
+		      retval = GLOB_NOSPACE;
+		      goto out;
 		    }
-		  scratch_buffer_free (&pwtmpbuf);
 		}
-	      else
+	      if (err == 0)
+		{
+		  home_dir = strdup (p->pw_dir);
+		  malloc_home_dir = 1;
+		}
+	      scratch_buffer_free (&s);
+	      if (err == 0 && home_dir == NULL)
 		{
-		  if (__glibc_unlikely (malloc_name))
-		    free (name);
+		  retval = GLOB_NOSPACE;
+		  goto out;
 		}
 #endif /* WINDOWS32 */
 	    }

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=5a79f97554af6f2eb0a654f844b3d1f56937064d

commit 5a79f97554af6f2eb0a654f844b3d1f56937064d
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Sep 4 17:00:03 2017 -0300

    posix: Fix getpwnam_r usage (BZ #1062)
    
    This patch fixes longstanding misuse of errno after getpwnam_r,
    which returns an error number rather than setting errno.  This is
    sync with gnulib commit 5db9301.
    
    Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
    for all major architectures.
    
    	[BZ #1062]
    	* posix/glob.c (glob): Port recent patches to platforms
    	lacking getpwnam_r.
    	(glob): Fix longstanding misuse of errno after getpwnam_r, which
    	returns an error number rather than setting errno.

diff --git a/ChangeLog b/ChangeLog
index c8d46e9..39d1235 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2017-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	[BZ #1062]
+	* posix/glob.c (glob): Port recent patches to platforms
+	lacking getpwnam_r.
+	(glob): Fix longstanding misuse of errno after getpwnam_r, which
+	returns an error number rather than setting errno.
+
 	* include/scratch_buffer.h (scratch_buffer): Use a C99 align method
 	instead of GCC extension.
 	* malloc/scratch_buffer_grow.c [!_LIBC]: Include libc-config.h.
diff --git a/posix/glob.c b/posix/glob.c
index 29e8948..ef620a1 100644
--- a/posix/glob.c
+++ b/posix/glob.c
@@ -15,10 +15,6 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifndef _LIBC
-# include <config.h>
-#endif
-
 #include <glob.h>
 
 #include <errno.h>
@@ -39,10 +35,6 @@
 #endif
 
 #include <errno.h>
-#ifndef __set_errno
-# define __set_errno(val) errno = (val)
-#endif
-
 #include <dirent.h>
 #include <stdlib.h>
 #include <string.h>
@@ -82,12 +74,8 @@
 
 #include <flexmember.h>
 #include <glob_internal.h>
+#include <scratch_buffer.h>
 
-#ifdef _SC_GETPW_R_SIZE_MAX
-# define GETPW_R_SIZE_MAX()	sysconf (_SC_GETPW_R_SIZE_MAX)
-#else
-# define GETPW_R_SIZE_MAX()	(-1)
-#endif
 #ifdef _SC_LOGIN_NAME_MAX
 # define GET_LOGIN_NAME_MAX()	sysconf (_SC_LOGIN_NAME_MAX)
 #else
@@ -648,97 +636,36 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      if (success)
 		{
 		  struct passwd *p;
-		  char *malloc_pwtmpbuf = NULL;
-		  char *pwtmpbuf;
+		  struct scratch_buffer pwtmpbuf;
+		  scratch_buffer_init (&pwtmpbuf);
 # if defined HAVE_GETPWNAM_R || defined _LIBC
-		  long int pwbuflenmax = GETPW_R_SIZE_MAX ();
-		  size_t pwbuflen = pwbuflenmax;
 		  struct passwd pwbuf;
-		  int save = errno;
 
-#  ifndef _LIBC
-		  if (! (0 < pwbuflenmax && pwbuflenmax <= SIZE_MAX))
-		    /* 'sysconf' does not support _SC_GETPW_R_SIZE_MAX.
-		       Try a moderate value.  */
-		    pwbuflen = 1024;
-#  endif
-		  if (glob_use_alloca (alloca_used, pwbuflen))
-		    pwtmpbuf = alloca_account (pwbuflen, alloca_used);
-		  else
+		  while (getpwnam_r (name, &pwbuf,
+				     pwtmpbuf.data, pwtmpbuf.length, &p)
+			 == ERANGE)
 		    {
-		      pwtmpbuf = malloc (pwbuflen);
-		      if (pwtmpbuf == NULL)
+		      if (!scratch_buffer_grow (&pwtmpbuf))
 			{
-			  if (__glibc_unlikely (malloc_name))
-			    free (name);
 			  retval = GLOB_NOSPACE;
 			  goto out;
 			}
-		      malloc_pwtmpbuf = pwtmpbuf;
-		    }
-
-		  while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
-			 != 0)
-		    {
-		      size_t newlen;
-		      bool v;
-		      if (errno != ERANGE)
-			{
-			  p = NULL;
-			  break;
-			}
-		      v = size_add_wrapv (pwbuflen, pwbuflen, &newlen);
-		      if (!v && malloc_pwtmpbuf == NULL
-			  && glob_use_alloca (alloca_used, newlen))
-			pwtmpbuf = extend_alloca_account (pwtmpbuf, pwbuflen,
-							  newlen, alloca_used);
-		      else
-			{
-			  char *newp = (v ? NULL
-					: realloc (malloc_pwtmpbuf, newlen));
-			  if (newp == NULL)
-			    {
-			      free (malloc_pwtmpbuf);
-			      if (__glibc_unlikely (malloc_name))
-				free (name);
-			      retval = GLOB_NOSPACE;
-			      goto out;
-			    }
-			  malloc_pwtmpbuf = pwtmpbuf = newp;
-			}
-		      pwbuflen = newlen;
-		      __set_errno (save);
 		    }
 # else
 		  p = getpwnam (name);
 # endif
-		  if (__glibc_unlikely (malloc_name))
-		    free (name);
 		  if (p != NULL)
 		    {
-		      if (malloc_pwtmpbuf == NULL)
-			home_dir = p->pw_dir;
-		      else
+		      home_dir = strdup (p->pw_dir);
+		      malloc_home_dir = 1;
+		      if (home_dir == NULL)
 			{
-			  size_t home_dir_len = strlen (p->pw_dir) + 1;
-			  if (glob_use_alloca (alloca_used, home_dir_len))
-			    home_dir = alloca_account (home_dir_len,
-						       alloca_used);
-			  else
-			    {
-			      home_dir = malloc (home_dir_len);
-			      if (home_dir == NULL)
-				{
-				  free (pwtmpbuf);
-				  retval = GLOB_NOSPACE;
-				  goto out;
-				}
-			      malloc_home_dir = 1;
-			    }
-			  memcpy (home_dir, p->pw_dir, home_dir_len);
+			  scratch_buffer_free (&pwtmpbuf);
+			  retval = GLOB_NOSPACE;
+			  goto out;
 			}
 		    }
-		  free (malloc_pwtmpbuf);
+		  scratch_buffer_free (&pwtmpbuf);
 		}
 	      else
 		{
@@ -875,61 +802,21 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  /* Look up specific user's home directory.  */
 	  {
 	    struct passwd *p;
-	    char *malloc_pwtmpbuf = NULL;
+	    struct scratch_buffer pwtmpbuf;
+	    scratch_buffer_init (&pwtmpbuf);
+
 #  if defined HAVE_GETPWNAM_R || defined _LIBC
-	    long int buflenmax = GETPW_R_SIZE_MAX ();
-	    size_t buflen = buflenmax;
-	    char *pwtmpbuf;
 	    struct passwd pwbuf;
-	    int save = errno;
-
-#   ifndef _LIBC
-	    if (! (0 <= buflenmax && buflenmax <= SIZE_MAX))
-	      /* Perhaps 'sysconf' does not support _SC_GETPW_R_SIZE_MAX.  Try a
-		 moderate value.  */
-	      buflen = 1024;
-#   endif
-	    if (glob_use_alloca (alloca_used, buflen))
-	      pwtmpbuf = alloca_account (buflen, alloca_used);
-	    else
+
+	    while (getpwnam_r (user_name, &pwbuf,
+			       pwtmpbuf.data, pwtmpbuf.length, &p)
+		   == ERANGE)
 	      {
-		pwtmpbuf = malloc (buflen);
-		if (pwtmpbuf == NULL)
+		if (!scratch_buffer_grow (&pwtmpbuf))
 		  {
-		  nomem_getpw:
-		    if (__glibc_unlikely (malloc_user_name))
-		      free (user_name);
 		    retval = GLOB_NOSPACE;
 		    goto out;
 		  }
-		malloc_pwtmpbuf = pwtmpbuf;
-	      }
-
-	    while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
-	      {
-		size_t newlen;
-		bool v;
-		if (errno != ERANGE)
-		  {
-		    p = NULL;
-		    break;
-		  }
-		v = size_add_wrapv (buflen, buflen, &newlen);
-		if (!v && malloc_pwtmpbuf == NULL
-		    && glob_use_alloca (alloca_used, newlen))
-		  pwtmpbuf = extend_alloca_account (pwtmpbuf, buflen,
-						    newlen, alloca_used);
-		else
-		  {
-		    char *newp = v ? NULL : realloc (malloc_pwtmpbuf, newlen);
-		    if (newp == NULL)
-		      {
-			free (malloc_pwtmpbuf);
-			goto nomem_getpw;
-		      }
-		    malloc_pwtmpbuf = pwtmpbuf = newp;
-		  }
-		__set_errno (save);
 	      }
 #  else
 	    p = getpwnam (user_name);
@@ -956,7 +843,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 		    dirname = malloc (home_len + rest_len + 1);
 		    if (dirname == NULL)
 		      {
-			free (malloc_pwtmpbuf);
+			scratch_buffer_free (&pwtmpbuf);
 			retval = GLOB_NOSPACE;
 			goto out;
 		      }
@@ -967,13 +854,9 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 
 		dirlen = home_len + rest_len;
 		dirname_modified = 1;
-
-		free (malloc_pwtmpbuf);
 	      }
 	    else
 	      {
-		free (malloc_pwtmpbuf);
-
 		if (flags & GLOB_TILDE_CHECK)
 		  {
 		    /* We have to regard it as an error if we cannot find the
@@ -982,6 +865,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 		    goto out;
 		  }
 	      }
+	    scratch_buffer_free (&pwtmpbuf);
 	  }
 #endif /* !WINDOWS32 */
 	}

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=e00f2425996829632de5abff88bc1797558ce92e

commit e00f2425996829632de5abff88bc1797558ce92e
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Sep 4 16:44:12 2017 -0300

    Sync scratch_buffer with gnulib
    
    This patch syncs the scratch_buffer grom gnulib commit 3866ef6 with
    GLIBC code.
    
    Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
    for all major architectures.
    
    	* include/scratch_buffer.h (scratch_buffer): Use a C99 align method
    	instead of GCC extension.
    	* malloc/scratch_buffer_grow.c [!_LIBC]: Include libc-config.h.
    	* malloc/scratch_buffer_grow_preserve.c [!_LIBC]: Likewise.
    	* malloc/scratch_buffer_set_array_size.c [!_LIBC]: Likewise.

diff --git a/ChangeLog b/ChangeLog
index 5f9bc62..c8d46e9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2017-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	* include/scratch_buffer.h (scratch_buffer): Use a C99 align method
+	instead of GCC extension.
+	* malloc/scratch_buffer_grow.c [!_LIBC]: Include libc-config.h.
+	* malloc/scratch_buffer_grow_preserve.c [!_LIBC]: Likewise.
+	* malloc/scratch_buffer_set_array_size.c [!_LIBC]: Likewise.
+
 	[BZ #866]
 	[BZ #1062]
 	* posix/Makefile (tests): Remove bug-glob1 and tst-glob_symlinks.
diff --git a/include/scratch_buffer.h b/include/scratch_buffer.h
index dd17a4a..bb04662 100644
--- a/include/scratch_buffer.h
+++ b/include/scratch_buffer.h
@@ -66,8 +66,7 @@
 struct scratch_buffer {
   void *data;    /* Pointer to the beginning of the scratch area.  */
   size_t length; /* Allocated space at the data pointer, in bytes.  */
-  char __space[1024]
-    __attribute__ ((aligned (__alignof__ (max_align_t))));
+  max_align_t __space[(1023 + sizeof (max_align_t)) / sizeof (max_align_t)];
 };
 
 /* Initializes *BUFFER so that BUFFER->data points to BUFFER->__space
diff --git a/malloc/scratch_buffer_grow.c b/malloc/scratch_buffer_grow.c
index 22bae50..d2df028 100644
--- a/malloc/scratch_buffer_grow.c
+++ b/malloc/scratch_buffer_grow.c
@@ -16,6 +16,10 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
 #include <scratch_buffer.h>
 #include <errno.h>
 
@@ -49,4 +53,4 @@ __libc_scratch_buffer_grow (struct scratch_buffer *buffer)
   buffer->length = new_length;
   return true;
 }
-libc_hidden_def (__libc_scratch_buffer_grow);
+libc_hidden_def (__libc_scratch_buffer_grow)
diff --git a/malloc/scratch_buffer_grow_preserve.c b/malloc/scratch_buffer_grow_preserve.c
index 18543ef..9268615 100644
--- a/malloc/scratch_buffer_grow_preserve.c
+++ b/malloc/scratch_buffer_grow_preserve.c
@@ -16,6 +16,10 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
 #include <scratch_buffer.h>
 #include <errno.h>
 #include <string.h>
@@ -60,4 +64,4 @@ __libc_scratch_buffer_grow_preserve (struct scratch_buffer *buffer)
   buffer->length = new_length;
   return true;
 }
-libc_hidden_def (__libc_scratch_buffer_grow_preserve);
+libc_hidden_def (__libc_scratch_buffer_grow_preserve)
diff --git a/malloc/scratch_buffer_set_array_size.c b/malloc/scratch_buffer_set_array_size.c
index 8ab6d9d..6fcc115 100644
--- a/malloc/scratch_buffer_set_array_size.c
+++ b/malloc/scratch_buffer_set_array_size.c
@@ -16,6 +16,10 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
 #include <scratch_buffer.h>
 #include <errno.h>
 #include <limits.h>
@@ -57,4 +61,4 @@ __libc_scratch_buffer_set_array_size (struct scratch_buffer *buffer,
   buffer->length = new_length;
   return true;
 }
-libc_hidden_def (__libc_scratch_buffer_set_array_size);
+libc_hidden_def (__libc_scratch_buffer_set_array_size)

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=5554304f0dddf75dc27cc6250fc53355161fd16a

commit 5554304f0dddf75dc27cc6250fc53355161fd16a
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Sep 4 16:22:28 2017 -0300

    posix: Allow glob to match dangling symlinks [BZ #866]
    
    This patch makes glob match dangling symlinks.  Compared to other glob
    implementation (*BSD, bash, musl, and other shells as well), GLIBC seems
    the be the only one that does not match dangling symlinks.  As for
    comment #5 in BZ #866, POSIX does not have any strict specification for
    dangling symlinks match and it is reasonable that trying to glob everything
    in a path should return all types of files (such as for a 'rm *').  Also,
    comment #7 shows even more example where GLIBC current behavior is
    unexepected.
    
    I avoided adding another GNU specific flag to set this behavior and
    instead make it the default.  Although this change the semanthic from
    previous implementation, I think adding another compat symbol to be
    really unecessary as from aforementioned reasons (current behavior not
    defined in any standard, general idea of different implementation is
    to list dangling symbols).
    
    This also sync glob with gnulib commit fd1daf4 (glob: match dangling
    symlinks).
    
    Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
    for all major architectures.
    
    	[BZ #866]
    	[BZ #1062]
    	* posix/Makefile (tests): Remove bug-glob1 and tst-glob_symlinks.
    	* posix/bug-glob1.c: Remove file.
    	* posix/tst-glob_symlinks.c: New file.
    	* posix/glob.c (__lstat64): New macro.
    	(is_dir): New function.
    	(glob, glob_in_dir): Match symlinks even if they are dangling.
    	(link_stat, link_exists_p): Remove.  All uses removed.

diff --git a/ChangeLog b/ChangeLog
index d48cca3..5f9bc62 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,15 @@
 2017-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	[BZ #866]
+	[BZ #1062]
+	* posix/Makefile (tests): Remove bug-glob1 and tst-glob_symlinks.
+	* posix/bug-glob1.c: Remove file.
+	* posix/tst-glob_symlinks.c: New file.
+	* posix/glob.c (__lstat64): New macro.
+	(is_dir): New function.
+	(glob, glob_in_dir): Match symlinks even if they are dangling.
+	(link_stat, link_exists_p): Remove.  All uses removed.
+
 	[BZ #1062]
 	[BZ #19971]
 	* posix/glob.c (struct readdir_result): Remove skip_entry member.
diff --git a/posix/Makefile b/posix/Makefile
index 0ff8f5c..7188cba 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -79,7 +79,7 @@ tests		:= test-errno tstgetopt testfnm runtests runptests \
 		   tst-nice tst-nanosleep tst-regex2 \
 		   transbug tst-rxspencer tst-pcre tst-boost \
 		   bug-ga1 tst-vfork1 tst-vfork2 tst-vfork3 tst-waitid \
-		   tst-getaddrinfo2 bug-glob1 bug-glob2 bug-glob3 tst-sysconf \
+		   tst-getaddrinfo2 bug-glob2 bug-glob3 tst-sysconf \
 		   tst-execvp1 tst-execvp2 tst-execlp1 tst-execlp2 \
 		   tst-execv1 tst-execv2 tst-execl1 tst-execl2 \
 		   tst-execve1 tst-execve2 tst-execle1 tst-execle2 \
@@ -93,7 +93,7 @@ tests		:= test-errno tstgetopt testfnm runtests runptests \
 		   tst-fnmatch3 bug-regex36 tst-getaddrinfo5 \
 		   tst-posix_spawn-fd tst-posix_spawn-setsid \
 		   tst-posix_fadvise tst-posix_fadvise64 \
-		   tst-sysconf-empty-chroot
+		   tst-sysconf-empty-chroot tst-glob_symlinks
 tests-internal	:= bug-regex5 bug-regex20 bug-regex33 \
 		   tst-rfc3484 tst-rfc3484-2 tst-rfc3484-3
 xtests		:= bug-ga2
diff --git a/posix/bug-glob1.c b/posix/bug-glob1.c
deleted file mode 100644
index 05c2da7..0000000
--- a/posix/bug-glob1.c
+++ /dev/null
@@ -1,88 +0,0 @@
-/* Test case for globbing dangling symlink.  By Ulrich Drepper.  */
-#include <errno.h>
-#include <error.h>
-#include <glob.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-
-static void prepare (int argc, char *argv[]);
-#define PREPARE prepare
-static int do_test (void);
-#define TEST_FUNCTION do_test ()
-
-#include "../test-skeleton.c"
-
-
-static char *fname;
-
-static void
-prepare (int argc, char *argv[])
-{
-  if (argc < 2)
-    error (EXIT_FAILURE, 0, "missing argument");
-
-  size_t len = strlen (argv[1]);
-  static const char ext[] = "globXXXXXX";
-  fname = malloc (len + sizeof (ext));
-  if (fname == NULL)
-    error (EXIT_FAILURE, errno, "cannot create temp file");
- again:
-  strcpy (stpcpy (fname, argv[1]), ext);
-  fname = mktemp (fname);
-  if (fname == NULL || *fname == '\0')
-    error (EXIT_FAILURE, errno, "cannot create temp file name");
-  if (symlink ("bug-glob1-does-not-exist", fname) != 0)
-    {
-      if (errno == EEXIST)
-	goto again;
-
-      error (EXIT_FAILURE, errno, "cannot create symlink");
-    }
-  add_temp_file (fname);
-}
-
-
-static int
-do_test (void)
-{
-  glob_t gl;
-  int retval = 0;
-  int e;
-
-  e = glob (fname, 0, NULL, &gl);
-  if (e == 0)
-    {
-      printf ("glob(\"%s\") succeeded\n", fname);
-      retval = 1;
-    }
-  globfree (&gl);
-
-  size_t fnamelen = strlen (fname);
-  char buf[fnamelen + 2];
-
-  strcpy (buf, fname);
-  buf[fnamelen - 1] = '?';
-  e = glob (buf, 0, NULL, &gl);
-  if (e == 0)
-    {
-      printf ("glob(\"%s\") succeeded\n", buf);
-      retval = 1;
-    }
-  globfree (&gl);
-
-  strcpy (buf, fname);
-  buf[fnamelen] = '*';
-  buf[fnamelen + 1] = '\0';
-  e = glob (buf, 0, NULL, &gl);
-  if (e == 0)
-    {
-      printf ("glob(\"%s\") succeeded\n", buf);
-      retval = 1;
-    }
-  globfree (&gl);
-
-  return retval;
-}
diff --git a/posix/glob.c b/posix/glob.c
index dbf88ff..29e8948 100644
--- a/posix/glob.c
+++ b/posix/glob.c
@@ -57,6 +57,9 @@
 # define readdir(str) __readdir64 (str)
 # define getpwnam_r(name, bufp, buf, len, res) \
     __getpwnam_r (name, bufp, buf, len, res)
+# ifndef __lstat64
+#  define __lstat64(fname, buf) __lxstat64 (_STAT_VER, fname, buf)
+# endif
 # ifndef __stat64
 #  define __stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
 # endif
@@ -64,6 +67,7 @@
 # define FLEXIBLE_ARRAY_MEMBER
 #else /* !_LIBC */
 # define __getlogin_r(buf, len) getlogin_r (buf, len)
+# define __lstat64(fname, buf)  lstat (fname, buf)
 # define __stat64(fname, buf)   stat (fname, buf)
 # define __fxstatat64(_, d, f, st, flag) fstatat (d, f, st, flag)
 # define struct_stat64          struct stat
@@ -226,6 +230,18 @@ static int prefix_array (const char *prefix, char **array, size_t n) __THROWNL;
 static int collated_compare (const void *, const void *) __THROWNL;
 
 
+/* Return true if FILENAME is a directory or a symbolic link to a directory.
+   Use FLAGS and PGLOB to resolve the filename.  */
+static bool
+is_dir (char const *filename, int flags, glob_t const *pglob)
+{
+  struct stat st;
+  struct_stat64 st64;
+  return (__glibc_unlikely (flags & GLOB_ALTDIRFUNC)
+          ? pglob->gl_stat (filename, &st) == 0 && S_ISDIR (st.st_mode)
+          : __stat64 (filename, &st64) == 0 && S_ISDIR (st64.st_mode));
+}
+
 /* Find the end of the sub-pattern in a brace expression.  */
 static const char *
 next_brace_sub (const char *cp, int flags)
@@ -975,68 +991,53 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
      can give the answer now.  */
   if (filename == NULL)
     {
-      struct stat st;
-      struct_stat64 st64;
-
-      /* Return the directory if we don't check for error or if it exists.  */
-      if ((flags & GLOB_NOCHECK)
-	  || (((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0))
-	       ? ((*pglob->gl_stat) (dirname, &st) == 0
-		  && S_ISDIR (st.st_mode))
-	       : (__stat64 (dirname, &st64) == 0 && S_ISDIR (st64.st_mode)))))
-	{
-	  size_t newcount = pglob->gl_pathc + pglob->gl_offs;
-	  char **new_gl_pathv;
+	size_t newcount = pglob->gl_pathc + pglob->gl_offs;
+	char **new_gl_pathv;
 
-	  if (newcount > SIZE_MAX / sizeof (char *) - 2)
-	    {
-	    nospace:
-	      free (pglob->gl_pathv);
-	      pglob->gl_pathv = NULL;
-	      pglob->gl_pathc = 0;
-	      retval = GLOB_NOSPACE;
-	      goto out;
-	    }
-
-	  new_gl_pathv = realloc (pglob->gl_pathv,
-				  (newcount + 2) * sizeof (char *));
-	  if (new_gl_pathv == NULL)
-	    goto nospace;
-	  pglob->gl_pathv = new_gl_pathv;
+	if (newcount > SIZE_MAX / sizeof (char *) - 2)
+	  {
+	  nospace:
+	    free (pglob->gl_pathv);
+	    pglob->gl_pathv = NULL;
+	    pglob->gl_pathc = 0;
+	    retval = GLOB_NOSPACE;
+	    goto out;
+	  }
 
-	  if (flags & GLOB_MARK)
-	    {
-	      char *p;
-	      pglob->gl_pathv[newcount] = malloc (dirlen + 2);
-	      if (pglob->gl_pathv[newcount] == NULL)
-		goto nospace;
-	      p = mempcpy (pglob->gl_pathv[newcount], dirname, dirlen);
-	      p[0] = '/';
-	      p[1] = '\0';
-	      if (__glibc_unlikely (malloc_dirname))
-		free (dirname);
-	    }
-	  else
-	    {
-	      if (__glibc_unlikely (malloc_dirname))
-		pglob->gl_pathv[newcount] = dirname;
-	      else
-		{
-		  pglob->gl_pathv[newcount] = strdup (dirname);
-		  if (pglob->gl_pathv[newcount] == NULL)
-		    goto nospace;
-		}
-	    }
-	  pglob->gl_pathv[++newcount] = NULL;
-	  ++pglob->gl_pathc;
-	  pglob->gl_flags = flags;
+	new_gl_pathv = realloc (pglob->gl_pathv,
+				(newcount + 2) * sizeof (char *));
+	if (new_gl_pathv == NULL)
+	  goto nospace;
+	pglob->gl_pathv = new_gl_pathv;
 
-	  return 0;
-	}
+	if (flags & GLOB_MARK && is_dir (dirname, flags, pglob))
+	  {
+	    char *p;
+	    pglob->gl_pathv[newcount] = malloc (dirlen + 2);
+	    if (pglob->gl_pathv[newcount] == NULL)
+	      goto nospace;
+	    p = mempcpy (pglob->gl_pathv[newcount], dirname, dirlen);
+	    p[0] = '/';
+	    p[1] = '\0';
+	    if (__glibc_unlikely (malloc_dirname))
+	      free (dirname);
+	  }
+	else
+	  {
+	    if (__glibc_unlikely (malloc_dirname))
+	      pglob->gl_pathv[newcount] = dirname;
+	    else
+	      {
+		pglob->gl_pathv[newcount] = strdup (dirname);
+		if (pglob->gl_pathv[newcount] == NULL)
+		  goto nospace;
+	      }
+	  }
+	pglob->gl_pathv[++newcount] = NULL;
+	++pglob->gl_pathc;
+	pglob->gl_flags = flags;
 
-      /* Not found.  */
-      retval = GLOB_NOMATCH;
-      goto out;
+	return 0;
     }
 
   meta = __glob_pattern_type (dirname, !(flags & GLOB_NOESCAPE));
@@ -1244,15 +1245,9 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
     {
       /* Append slashes to directory names.  */
       size_t i;
-      struct stat st;
-      struct_stat64 st64;
 
       for (i = oldcount; i < pglob->gl_pathc + pglob->gl_offs; ++i)
-	if ((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
-	     ? ((*pglob->gl_stat) (pglob->gl_pathv[i], &st) == 0
-		&& S_ISDIR (st.st_mode))
-	     : (__stat64 (pglob->gl_pathv[i], &st64) == 0
-		&& S_ISDIR (st64.st_mode))))
+	if (is_dir (pglob->gl_pathv[i], flags, pglob))
 	  {
 	    size_t len = strlen (pglob->gl_pathv[i]) + 2;
 	    char *new = realloc (pglob->gl_pathv[i], len);
@@ -1358,56 +1353,6 @@ prefix_array (const char *dirname, char **array, size_t n)
   return 0;
 }
 
-/* We put this in a separate function mainly to allow the memory
-   allocated with alloca to be recycled.  */
-static int
-__attribute_noinline__
-link_stat (const char *dir, size_t dirlen, const char *fname,
-	   glob_t *pglob
-# if !defined _LIBC && !HAVE_FSTATAT
-	   , int flags
-# endif
-	   )
-{
-  size_t fnamelen = strlen (fname);
-  char *fullname = __alloca (dirlen + 1 + fnamelen + 1);
-  struct stat st;
-
-  mempcpy (mempcpy (mempcpy (fullname, dir, dirlen), "/", 1),
-	   fname, fnamelen + 1);
-
-# if !defined _LIBC && !HAVE_FSTATAT
-  if (__builtin_expect ((flags & GLOB_ALTDIRFUNC) == 0, 1))
-    {
-      struct_stat64 st64;
-      return __stat64 (fullname, &st64);
-    }
-# endif
-  return (*pglob->gl_stat) (fullname, &st);
-}
-
-/* Return true if DIR/FNAME exists.  */
-static int
-link_exists_p (int dfd, const char *dir, size_t dirlen, const char *fname,
-	       glob_t *pglob, int flags)
-{
-  int status;
-# if defined _LIBC || HAVE_FSTATAT
-  if (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0))
-    status = link_stat (dir, dirlen, fname, pglob);
-  else
-    {
-      /* dfd cannot be -1 here, because dirfd never returns -1 on
-	 glibc, or on hosts that have fstatat.  */
-      struct_stat64 st64;
-      status = __fxstatat64 (_STAT_VER, dfd, fname, &st64, 0);
-    }
-# else
-  status = link_stat (dir, dirlen, fname, pglob, flags);
-# endif
-  return status == 0 || errno == EOVERFLOW;
-}
-
 /* Like 'glob', but PATTERN is a final pathname component,
    and matches are searched for in DIRECTORY.
    The GLOB_NOSORT bit in FLAGS is ignored.  No sorting is ever done.
@@ -1449,8 +1394,6 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
     }
   else if (meta == 0)
     {
-      /* Since we use the normal file functions we can also use stat()
-	 to verify the file is there.  */
       union
       {
 	struct stat st;
@@ -1475,8 +1418,8 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 			"/", 1),
 	       pattern, patlen + 1);
       if (((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
-	   ? (*pglob->gl_stat) (fullname, &ust.st)
-	    : __stat64 (fullname, &ust.st64))
+	   ? (*pglob->gl_lstat) (fullname, &ust.st)
+	    : __lstat64 (fullname, &ust.st64))
 	   == 0)
 	  || errno == EOVERFLOW)
 	/* We found this file to be existing.  Now tell the rest
@@ -1500,8 +1443,6 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 	}
       else
 	{
-	  int dfd = (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
-		     ? -1 : dirfd ((DIR *) stream));
 	  int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
 			   | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0));
 	  flags |= GLOB_MAGCHAR;
@@ -1535,42 +1476,34 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 
 	      if (fnmatch (pattern, d.name, fnm_flags) == 0)
 		{
-		  /* If the file we found is a symlink we have to
-		     make sure the target file exists.  */
-		  dirent_type type = readdir_result_type (d);
-		  if (! (type == DT_LNK || type == DT_UNKNOWN)
-		      || link_exists_p (dfd, directory, dirlen, d.name,
-					pglob, flags))
+		  if (cur == names->count)
 		    {
-		      if (cur == names->count)
-			{
-			  struct globnames *newnames;
-			  size_t count = names->count * 2;
-			  size_t nameoff = offsetof (struct globnames, name);
-			  size_t size = FLEXSIZEOF (struct globnames, name,
-						    count * sizeof (char *));
-			  if ((SIZE_MAX - nameoff) / 2 / sizeof (char *)
-			      < names->count)
-			    goto memory_error;
-			  if (glob_use_alloca (alloca_used, size))
-			    newnames = names_alloca
-			      = alloca_account (size, alloca_used);
-			  else if ((newnames = malloc (size))
-				   == NULL)
-			    goto memory_error;
-			  newnames->count = count;
-			  newnames->next = names;
-			  names = newnames;
-			  cur = 0;
-			}
-		      names->name[cur] = strdup (d.name);
-		      if (names->name[cur] == NULL)
+		      struct globnames *newnames;
+		      size_t count = names->count * 2;
+		      size_t nameoff = offsetof (struct globnames, name);
+		      size_t size = FLEXSIZEOF (struct globnames, name,
+						count * sizeof (char *));
+		      if ((SIZE_MAX - nameoff) / 2 / sizeof (char *)
+			  < names->count)
 			goto memory_error;
-		      ++cur;
-		      ++nfound;
-		      if (SIZE_MAX - pglob->gl_offs <= nfound)
+		      if (glob_use_alloca (alloca_used, size))
+			newnames = names_alloca
+			  = alloca_account (size, alloca_used);
+		      else if ((newnames = malloc (size))
+			       == NULL)
 			goto memory_error;
+		      newnames->count = count;
+		      newnames->next = names;
+		      names = newnames;
+		      cur = 0;
 		    }
+		  names->name[cur] = strdup (d.name);
+		  if (names->name[cur] == NULL)
+		    goto memory_error;
+		  ++cur;
+		  ++nfound;
+		  if (SIZE_MAX - pglob->gl_offs <= nfound)
+		    goto memory_error;
 		}
 	    }
 	}
diff --git a/posix/tst-glob_symlinks.c b/posix/tst-glob_symlinks.c
new file mode 100644
index 0000000..5c4b4ec
--- /dev/null
+++ b/posix/tst-glob_symlinks.c
@@ -0,0 +1,135 @@
+/* Test glob danglin symlink match (BZ #866).
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <limits.h>
+#include <stddef.h>
+#include <glob.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <support/check.h>
+#include <support/temp_file.h>
+
+static void do_prepare (int argc, char *argv[]);
+#define PREPARE do_prepare
+static int do_test (void);
+#include <support/test-driver.c>
+
+/* Maximum number of symlink calls for create_link function.  */
+#define MAX_CREATE_LINK_TRIES 10
+
+static void
+create_link (const char *base, const char *fname, char *linkname,
+	     size_t linknamesize)
+{
+  int ntries = 0;
+  while (1)
+    {
+      snprintf (linkname, linknamesize, "%s/%s%02d", test_dir, base,
+		ntries);
+      if (symlink (fname, linkname) == 0)
+	break;
+      if (errno != EEXIST)
+	FAIL_EXIT1 ("symlink failed: %m");
+      if (ntries++ == MAX_CREATE_LINK_TRIES)
+	FAIL_EXIT1 ("symlink failed with EEXIST too many times");
+    }
+  add_temp_file (linkname);
+}
+
+static char valid_link[PATH_MAX];
+static char dangling_link[PATH_MAX];
+static char dangling_dir[PATH_MAX];
+
+static void
+do_prepare (int argc, char *argv[])
+{
+  char *fname;
+
+  create_temp_file ("tst-glob_symlinks.", &fname);
+
+  /* Create an existing symlink.  */
+  create_link ("valid-symlink-tst-glob_symlinks", fname, valid_link,
+	       sizeof valid_link);
+
+  /* Create a dangling symlink to a file.  */
+  int fd = create_temp_file ("dangling-tst-glob_file", &fname);
+  TEST_VERIFY_EXIT (close (fd) == 0);
+  /* It throws a warning at process end due 'add_temp_file' trying to
+     unlink it again.  */
+  TEST_VERIFY_EXIT (unlink (fname) == 0);
+  create_link ("dangling-symlink-file-tst-glob", fname, dangling_link,
+	       sizeof dangling_link);
+
+  /* Create a dangling symlink to a directory.  */
+  char tmpdir[PATH_MAX];
+  snprintf (tmpdir, sizeof tmpdir, "%s/dangling-tst-glob_folder.XXXXXX",
+	    test_dir);
+  TEST_VERIFY_EXIT (mkdtemp (tmpdir) != NULL);
+  create_link ("dangling-symlink-dir-tst-glob", tmpdir, dangling_dir,
+	       sizeof dangling_dir);
+  TEST_VERIFY_EXIT (rmdir (tmpdir) == 0);
+}
+
+static int
+do_test (void)
+{
+  char buf[PATH_MAX];
+  glob_t gl;
+
+  TEST_VERIFY_EXIT (glob (valid_link, 0, NULL, &gl) == 0);
+  TEST_VERIFY_EXIT (gl.gl_pathc == 1);
+  TEST_VERIFY_EXIT (strcmp (gl.gl_pathv[0], valid_link) == 0);
+  globfree (&gl);
+
+  TEST_VERIFY_EXIT (glob (dangling_link, 0, NULL, &gl) == 0);
+  TEST_VERIFY_EXIT (gl.gl_pathc == 1);
+  TEST_VERIFY_EXIT (strcmp (gl.gl_pathv[0], dangling_link) == 0);
+  globfree (&gl);
+
+  TEST_VERIFY_EXIT (glob (dangling_dir, 0, NULL, &gl) == 0);
+  TEST_VERIFY_EXIT (gl.gl_pathc == 1);
+  TEST_VERIFY_EXIT (strcmp (gl.gl_pathv[0], dangling_dir) == 0);
+  globfree (&gl);
+
+  snprintf (buf, sizeof buf, "%s", dangling_link);
+  buf[strlen(buf) - 1] = '?';
+  TEST_VERIFY_EXIT (glob (buf, 0, NULL, &gl) == 0);
+  TEST_VERIFY_EXIT (gl.gl_pathc == 1);
+  TEST_VERIFY_EXIT (strcmp (gl.gl_pathv[0], dangling_link) == 0);
+  globfree (&gl);
+
+  /* glob should handle dangling symbol as normal file, so <file>? should
+     return an empty string.  */
+  snprintf (buf, sizeof buf, "%s?", dangling_link);
+  TEST_VERIFY_EXIT (glob (buf, 0, NULL, &gl) != 0);
+  globfree (&gl);
+
+  snprintf (buf, sizeof buf, "%s*", dangling_link);
+  TEST_VERIFY_EXIT (glob (buf, 0, NULL, &gl) == 0);
+  TEST_VERIFY_EXIT (gl.gl_pathc == 1);
+  TEST_VERIFY_EXIT (strcmp (gl.gl_pathv[0], dangling_link) == 0);
+  globfree (&gl);
+
+  return 0;
+}

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=686f2ea18374a541d203cfcc0e1dfba1666f49c2

commit 686f2ea18374a541d203cfcc0e1dfba1666f49c2
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Sep 4 14:55:25 2017 -0300

    posix: accept inode 0 is a valid inode number (BZ #19971)
    
    According to this kernel commit 2adc376c55194, d_ino 0 is a regular inode
    number on Linux (which also matches POSIX, as it does not treat the value
    as special).  This patch makes glob accept is a valid inode number.
    
    This is also a sync with gnulib commit c8e57c1.
    
    Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
    for all major architectures.
    
    	[BZ #1062]
    	[BZ #19971]
    	* posix/glob.c (struct readdir_result): Remove skip_entry member.
    	(readdir_result_skip_entry, D_INO_TO_RESULT): Remove.
    	All uses removed.

diff --git a/ChangeLog b/ChangeLog
index 4fdc0bc..d48cca3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,12 @@
 2017-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	[BZ #1062]
+	[BZ #19971]
+	* posix/glob.c (struct readdir_result): Remove skip_entry member.
+	(readdir_result_skip_entry, D_INO_TO_RESULT): Remove.
+	All uses removed.
+
+	[BZ #1062]
 	* posix/Makefile (routines): Add globfree, globfree64, and
 	glob_pattern_p.
 	* posix/flexmember.h: New file.
diff --git a/posix/glob.c b/posix/glob.c
index a7eccf9..dbf88ff 100644
--- a/posix/glob.c
+++ b/posix/glob.c
@@ -113,9 +113,6 @@ struct readdir_result
 #if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE
   dirent_type type;
 #endif
-#if defined _LIBC || defined D_INO_IN_DIRENT
-  bool skip_entry;
-#endif
 };
 
 /* Initialize and return type member of struct readdir_result.  */
@@ -131,28 +128,12 @@ readdir_result_type (struct readdir_result d)
 #endif
 }
 
-/* Initialize and return skip_entry member of struct readdir_result.  */
-static bool
-readdir_result_skip_entry (struct readdir_result d)
-{
-/* Initializer for skip_entry.  POSIX does not require that the d_ino
-   field be present, and some systems do not provide it. */
-#if defined _LIBC || defined D_INO_IN_DIRENT
-# define D_INO_TO_RESULT(source) (source)->d_ino == 0,
-  return d.skip_entry;
-#else
-# define D_INO_TO_RESULT(source)
-  return false;
-#endif
-}
-
 /* Construct an initializer for a struct readdir_result object from a
    struct dirent *.  No copy of the name is made.  */
 #define READDIR_RESULT_INITIALIZER(source) \
   {					   \
     source->d_name,			   \
     D_TYPE_TO_RESULT (source)		   \
-    D_INO_TO_RESULT (source)		   \
   }
 
 /* Call gl_readdir on STREAM.  This macro can be overridden to reduce
@@ -1542,8 +1523,6 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 	      }
 	      if (d.name == NULL)
 		break;
-	      if (readdir_result_skip_entry (d))
-		continue;
 
 	      /* If we shall match only directories use the information
 		 provided by the dirent call if possible.  */

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=c66c908230169c1bab1f83b071eb585baa214b9f

commit c66c908230169c1bab1f83b071eb585baa214b9f
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Sep 4 14:53:38 2017 -0300

    posix: Sync glob with gnulib [BZ #1062]
    
    This patch syncs posix/glob.c implementation with gnulib version
    b5ec983 (glob: simplify symlink detection).  The only difference
    to gnulib code is
    
      * DT_UNKNOWN, DT_DIR, and DT_LNK definition in the case there
        were not already defined.  Gnulib code which uses
        HAVE_STRUCT_DIRENT_D_TYPE will redefine them wrongly because
        GLIBC does not define HAVE_STRUCT_DIRENT_D_TYPE.  Instead
        the patch check for each definition instead.
    
    Also, the patch requires additional globfree and globfree64 files
    for compatibility version on some architectures.  Also the code
    simplification leads to not macro simplification (not need for
    NO_GLOB_PATTERN_P anymore).
    
    Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py
    for all major architectures.
    
    	[BZ #1062]
    	* posix/Makefile (routines): Add globfree, globfree64, and
    	glob_pattern_p.
    	* posix/flexmember.h: New file.
    	* posix/glob_internal.h: Likewise.
    	* posix/glob_pattern_p.c: Likewise.
    	* posix/globfree.c: Likewise.
    	* posix/globfree64.c: Likewise.
    	* sysdeps/gnu/globfree64.c: Likewise.
    	* sysdeps/unix/sysv/linux/alpha/globfree.c: Likewise.
    	* sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c: Likewise.
    	* sysdeps/unix/sysv/linux/oldglob.c: Likewise.
    	* sysdeps/unix/sysv/linux/wordsize-64/globfree64.c: Likewise.
    	* sysdeps/unix/sysv/linux/x86_64/x32/globfree.c: Likewise.
    	* sysdeps/wordsize-64/globfree.c: Likewise.
    	* sysdeps/wordsize-64/globfree64.c: Likewise.
    	* posix/glob.c (HAVE_CONFIG_H): Use !_LIBC instead.
    	[NDEBUG): Remove comments.
    	(GLOB_ONLY_P, _AMIGA, VMS): Remove define.
    	(dirent_type): New type.  Use uint_fast8_t not
    	uint8_t, as C99 does not require uint8_t.
    	(DT_UNKNOWN, DT_DIR, DT_LNK): New macros.
    	(struct readdir_result): Use dirent_type.  Do not define skip_entry
    	unless it is needed; this saves a byte on platforms lacking d_ino.
    	(readdir_result_type, readdir_result_skip_entry):
    	New functions, replacing ...
    	(readdir_result_might_be_symlink, readdir_result_might_be_dir):
    	 these functions, which were removed.  This makes the callers
    	easier to read.  All callers changed.
    	(D_INO_TO_RESULT): Now empty if there is no d_ino.
    	(size_add_wrapv, glob_use_alloca): New static functions.
    	(glob, glob_in_dir): Check for size_t overflow in several places,
    	and fix some size_t checks that were not quite right.
    	Remove old code using SHELL since Bash no longer
    	uses this.
    	(glob, prefix_array): Separate MS code better.
    	(glob_in_dir): Remove old Amiga and VMS code.
    	(globfree, __glob_pattern_type, __glob_pattern_p): Move to
    	separate files.
    	(glob_in_dir): Do not rely on undefined behavior in accessing
    	struct members beyond their bounds.  Use a flexible array member
    	instead
    	(link_stat): Rename from link_exists2_p and return -1/0 instead of
    	0/1.  Caller changed.
    	(glob): Fix memory leaks.
    	* posix/glob64 (globfree64): Move to separate file.
    	* sysdeps/gnu/glob64.c (NO_GLOB_PATTERN_P): Remove define.
    	(globfree64): Remove hidden alias.
    	* sysdeps/unix/sysv/linux/Makefile (sysdeps_routines): Add
    	oldglob.
    	* sysdeps/unix/sysv/linux/alpha/glob.c (__new_globfree): Move to
    	separate file.
    	* sysdeps/unix/sysv/linux/i386/glob64.c (NO_GLOB_PATTERN_P): Remove
    	define.
    	Move compat code to separate file.
    	* sysdeps/wordsize-64/glob.c (globfree): Move definitions to
    	separate file.

diff --git a/ChangeLog b/ChangeLog
index 50bf6a1..4fdc0bc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,63 @@
+2017-09-08  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
+
+	[BZ #1062]
+	* posix/Makefile (routines): Add globfree, globfree64, and
+	glob_pattern_p.
+	* posix/flexmember.h: New file.
+	* posix/glob_internal.h: Likewise.
+	* posix/glob_pattern_p.c: Likewise.
+	* posix/globfree.c: Likewise.
+	* posix/globfree64.c: Likewise.
+	* sysdeps/gnu/globfree64.c: Likewise.
+	* sysdeps/unix/sysv/linux/alpha/globfree.c: Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c: Likewise.
+	* sysdeps/unix/sysv/linux/oldglob.c: Likewise.
+	* sysdeps/unix/sysv/linux/wordsize-64/globfree64.c: Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/x32/globfree.c: Likewise.
+	* sysdeps/wordsize-64/globfree.c: Likewise.
+	* sysdeps/wordsize-64/globfree64.c: Likewise.
+	* posix/glob.c (HAVE_CONFIG_H): Use !_LIBC instead.
+	[NDEBUG): Remove comments.
+	(GLOB_ONLY_P, _AMIGA, VMS): Remove define.
+	(dirent_type): New type.  Use uint_fast8_t not
+	uint8_t, as C99 does not require uint8_t.
+	(DT_UNKNOWN, DT_DIR, DT_LNK): New macros.
+	(struct readdir_result): Use dirent_type.  Do not define skip_entry
+	unless it is needed; this saves a byte on platforms lacking d_ino.
+	(readdir_result_type, readdir_result_skip_entry):
+	New functions, replacing ...
+	(readdir_result_might_be_symlink, readdir_result_might_be_dir):
+	 these functions, which were removed.  This makes the callers
+	easier to read.  All callers changed.
+	(D_INO_TO_RESULT): Now empty if there is no d_ino.
+	(size_add_wrapv, glob_use_alloca): New static functions.
+	(glob, glob_in_dir): Check for size_t overflow in several places,
+	and fix some size_t checks that were not quite right.
+	Remove old code using SHELL since Bash no longer
+	uses this.
+	(glob, prefix_array): Separate MS code better.
+	(glob_in_dir): Remove old Amiga and VMS code.
+	(globfree, __glob_pattern_type, __glob_pattern_p): Move to
+	separate files.
+	(glob_in_dir): Do not rely on undefined behavior in accessing
+	struct members beyond their bounds.  Use a flexible array member
+	instead
+	(link_stat): Rename from link_exists2_p and return -1/0 instead of
+	0/1.  Caller changed.
+	(glob): Fix memory leaks.
+	* posix/glob64 (globfree64): Move to separate file.
+	* sysdeps/gnu/glob64.c (NO_GLOB_PATTERN_P): Remove define.
+	(globfree64): Remove hidden alias.
+	* sysdeps/unix/sysv/linux/Makefile (sysdeps_routines): Add
+	oldglob.
+	* sysdeps/unix/sysv/linux/alpha/glob.c (__new_globfree): Move to
+	separate file.
+	* sysdeps/unix/sysv/linux/i386/glob64.c (NO_GLOB_PATTERN_P): Remove
+	define.
+	Move compat code to separate file.
+	* sysdeps/wordsize-64/glob.c (globfree): Move definitions to
+	separate file.
+
 2017-09-07  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* resolv/tst-resolv-qtypes.c (domain): Changed to
diff --git a/posix/Makefile b/posix/Makefile
index 9b534f0..0ff8f5c 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -45,7 +45,7 @@ routines :=								      \
 	getpgid setpgid getpgrp bsd-getpgrp setpgrp getsid setsid	      \
 	getresuid getresgid setresuid setresgid				      \
 	pathconf sysconf fpathconf					      \
-	glob glob64 fnmatch regex					      \
+	glob glob64 globfree globfree64 glob_pattern_p fnmatch regex	      \
 	confstr								      \
 	getopt getopt1 							      \
 	sched_setp sched_getp sched_sets sched_gets sched_yield sched_primax  \
diff --git a/posix/flexmember.h b/posix/flexmember.h
new file mode 100644
index 0000000..107c1f0
--- /dev/null
+++ b/posix/flexmember.h
@@ -0,0 +1,45 @@
+/* Sizes of structs with flexible array members.
+
+   Copyright 2016-2017 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.
+
+   Written by Paul Eggert.  */
+
+#include <stddef.h>
+
+/* Nonzero multiple of alignment of TYPE, suitable for FLEXSIZEOF below.
+   On older platforms without _Alignof, use a pessimistic bound that is
+   safe in practice even if FLEXIBLE_ARRAY_MEMBER is 1.
+   On newer platforms, use _Alignof to get a tighter bound.  */
+
+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112
+# define FLEXALIGNOF(type) (sizeof (type) & ~ (sizeof (type) - 1))
+#else
+# define FLEXALIGNOF(type) _Alignof (type)
+#endif
+
+/* Upper bound on the size of a struct of type TYPE with a flexible
+   array member named MEMBER that is followed by N bytes of other data.
+   This is not simply sizeof (TYPE) + N, since it may require
+   alignment on unusually picky C11 platforms, and
+   FLEXIBLE_ARRAY_MEMBER may be 1 on pre-C11 platforms.
+   Yield a value less than N if and only if arithmetic overflow occurs.  */
+
+#define FLEXSIZEOF(type, member, n) \
+   ((offsetof (type, member) + FLEXALIGNOF (type) - 1 + (n)) \
+    & ~ (FLEXALIGNOF (type) - 1))
diff --git a/posix/glob.c b/posix/glob.c
index c653809..a7eccf9 100644
--- a/posix/glob.c
+++ b/posix/glob.c
@@ -15,7 +15,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#ifdef	HAVE_CONFIG_H
+#ifndef _LIBC
 # include <config.h>
 #endif
 
@@ -27,29 +27,15 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
-
-/* Outcomment the following line for production quality code.  */
-/* #define NDEBUG 1 */
 #include <assert.h>
+#include <unistd.h>
 
-#include <stdio.h>		/* Needed on stupid SunOS for assert.  */
-
-#if !defined _LIBC || !defined GLOB_ONLY_P
-#if defined HAVE_UNISTD_H || defined _LIBC
-# include <unistd.h>
-# ifndef POSIX
-#  ifdef _POSIX_VERSION
-#   define POSIX
-#  endif
-# endif
+#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+# define WINDOWS32
 #endif
 
-#include <pwd.h>
-
-#if defined HAVE_STDINT_H || defined _LIBC
-# include <stdint.h>
-#elif !defined UINTPTR_MAX
-# define UINTPTR_MAX (~((size_t) 0))
+#ifndef WINDOWS32
+# include <pwd.h>
 #endif
 
 #include <errno.h>
@@ -57,24 +43,7 @@
 # define __set_errno(val) errno = (val)
 #endif
 
-#if defined HAVE_DIRENT_H || defined __GNU_LIBRARY__
-# include <dirent.h>
-#else
-# define dirent direct
-# ifdef HAVE_SYS_NDIR_H
-#  include <sys/ndir.h>
-# endif
-# ifdef HAVE_SYS_DIR_H
-#  include <sys/dir.h>
-# endif
-# ifdef HAVE_NDIR_H
-#  include <ndir.h>
-# endif
-# ifdef HAVE_VMSDIR_H
-#  include "vmsdir.h"
-# endif /* HAVE_VMSDIR_H */
-#endif
-
+#include <dirent.h>
 #include <stdlib.h>
 #include <string.h>
 #include <alloca.h>
@@ -87,27 +56,29 @@
 # define opendir(name) __opendir (name)
 # define readdir(str) __readdir64 (str)
 # define getpwnam_r(name, bufp, buf, len, res) \
-   __getpwnam_r (name, bufp, buf, len, res)
+    __getpwnam_r (name, bufp, buf, len, res)
 # ifndef __stat64
 #  define __stat64(fname, buf) __xstat64 (_STAT_VER, fname, buf)
 # endif
 # define struct_stat64		struct stat64
+# define FLEXIBLE_ARRAY_MEMBER
 #else /* !_LIBC */
-# include "getlogin_r.h"
-# include "mempcpy.h"
-# include "stat-macros.h"
-# include "strdup.h"
-# define __stat64(fname, buf)	stat (fname, buf)
-# define struct_stat64		struct stat
-# define __stat(fname, buf)	stat (fname, buf)
-# define __alloca		alloca
-# define __readdir		readdir
-# define __readdir64		readdir64
-# define __glob_pattern_p	glob_pattern_p
+# define __getlogin_r(buf, len) getlogin_r (buf, len)
+# define __stat64(fname, buf)   stat (fname, buf)
+# define __fxstatat64(_, d, f, st, flag) fstatat (d, f, st, flag)
+# define struct_stat64          struct stat
+# ifndef __MVS__
+#  define __alloca              alloca
+# endif
+# define __readdir              readdir
+# define COMPILE_GLOB64
 #endif /* _LIBC */
 
 #include <fnmatch.h>
 
+#include <flexmember.h>
+#include <glob_internal.h>
+
 #ifdef _SC_GETPW_R_SIZE_MAX
 # define GETPW_R_SIZE_MAX()	sysconf (_SC_GETPW_R_SIZE_MAX)
 #else
@@ -121,61 +92,59 @@
 
 static const char *next_brace_sub (const char *begin, int flags) __THROWNL;
 
+typedef uint_fast8_t dirent_type;
+
+#if !defined _LIBC && !defined HAVE_STRUCT_DIRENT_D_TYPE
+/* Any distinct values will do here.
+   Undef any existing macros out of the way.  */
+# undef DT_UNKNOWN
+# undef DT_DIR
+# undef DT_LNK
+# define DT_UNKNOWN 0
+# define DT_DIR 1
+# define DT_LNK 2
+#endif
+
 /* A representation of a directory entry which does not depend on the
    layout of struct dirent, or the size of ino_t.  */
 struct readdir_result
 {
   const char *name;
-# if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE
-  uint8_t type;
-# endif
+#if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE
+  dirent_type type;
+#endif
+#if defined _LIBC || defined D_INO_IN_DIRENT
   bool skip_entry;
+#endif
 };
 
-# if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE
-/* Initializer based on the d_type member of struct dirent.  */
-#  define D_TYPE_TO_RESULT(source) (source)->d_type,
-
-/* True if the directory entry D might be a symbolic link.  */
-static bool
-readdir_result_might_be_symlink (struct readdir_result d)
-{
-  return d.type == DT_UNKNOWN || d.type == DT_LNK;
-}
-
-/* True if the directory entry D might be a directory.  */
-static bool
-readdir_result_might_be_dir (struct readdir_result d)
-{
-  return d.type == DT_DIR || readdir_result_might_be_symlink (d);
-}
-# else /* defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE */
-#  define D_TYPE_TO_RESULT(source)
-
-/* If we do not have type information, symbolic links and directories
-   are always a possibility.  */
-
-static bool
-readdir_result_might_be_symlink (struct readdir_result d)
+/* Initialize and return type member of struct readdir_result.  */
+static dirent_type
+readdir_result_type (struct readdir_result d)
 {
-  return true;
+#if defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE
+# define D_TYPE_TO_RESULT(source) (source)->d_type,
+  return d.type;
+#else
+# define D_TYPE_TO_RESULT(source)
+  return DT_UNKNOWN;
+#endif
 }
 
+/* Initialize and return skip_entry member of struct readdir_result.  */
 static bool
-readdir_result_might_be_dir (struct readdir_result d)
+readdir_result_skip_entry (struct readdir_result d)
 {
-  return true;
-}
-
-# endif /* defined _DIRENT_HAVE_D_TYPE || defined HAVE_STRUCT_DIRENT_D_TYPE */
-
-# if (defined POSIX || defined WINDOWS32) && !defined __GNU_LIBRARY__
 /* Initializer for skip_entry.  POSIX does not require that the d_ino
    field be present, and some systems do not provide it. */
-#  define D_INO_TO_RESULT(source) false,
-# else
-#  define D_INO_TO_RESULT(source) (source)->d_ino == 0,
-# endif
+#if defined _LIBC || defined D_INO_IN_DIRENT
+# define D_INO_TO_RESULT(source) (source)->d_ino == 0,
+  return d.skip_entry;
+#else
+# define D_INO_TO_RESULT(source)
+  return false;
+#endif
+}
 
 /* Construct an initializer for a struct readdir_result object from a
    struct dirent *.  No copy of the name is made.  */
@@ -186,8 +155,6 @@ readdir_result_might_be_dir (struct readdir_result d)
     D_INO_TO_RESULT (source)		   \
   }
 
-#endif /* !defined _LIBC || !defined GLOB_ONLY_P */
-
 /* Call gl_readdir on STREAM.  This macro can be overridden to reduce
    type safety if an old interface version needs to be supported.  */
 #ifndef GL_READDIR
@@ -225,18 +192,55 @@ convert_dirent64 (const struct dirent64 *source)
 }
 #endif
 
+#ifndef _LIBC
+/* The results of opendir() in this file are not used with dirfd and fchdir,
+   and we do not leak fds to any single-threaded code that could use stdio,
+   therefore save some unnecessary recursion in fchdir.c and opendir_safer.c.
+   FIXME - if the kernel ever adds support for multi-thread safety for
+   avoiding standard fds, then we should use opendir_safer.  */
+# ifdef GNULIB_defined_opendir
+#  undef opendir
+# endif
+# ifdef GNULIB_defined_closedir
+#  undef closedir
+# endif
 
-#ifndef attribute_hidden
-# define attribute_hidden
+/* Just use malloc.  */
+# define __libc_use_alloca(n) false
+# define alloca_account(len, avar) ((void) (len), (void) (avar), (void *) 0)
+# define extend_alloca_account(buf, len, newlen, avar) \
+    ((void) (buf), (void) (len), (void) (newlen), (void) (avar), (void *) 0)
 #endif
 
+/* Set *R = A + B.  Return true if the answer is mathematically
+   incorrect due to overflow; in this case, *R is the low order
+   bits of the correct answer.  */
+
+static bool
+size_add_wrapv (size_t a, size_t b, size_t *r)
+{
+#if 5 <= __GNUC__ && !defined __ICC
+  return __builtin_add_overflow (a, b, r);
+#else
+  *r = a + b;
+  return *r < a;
+#endif
+}
+
+static bool
+glob_use_alloca (size_t alloca_used, size_t len)
+{
+  size_t size;
+  return (!size_add_wrapv (alloca_used, len, &size)
+          && __libc_use_alloca (size));
+}
+
 static int glob_in_dir (const char *pattern, const char *directory,
 			int flags, int (*errfunc) (const char *, int),
 			glob_t *pglob, size_t alloca_used);
 extern int __glob_pattern_type (const char *pattern, int quote)
     attribute_hidden;
 
-#if !defined _LIBC || !defined GLOB_ONLY_P
 static int prefix_array (const char *prefix, char **array, size_t n) __THROWNL;
 static int collated_compare (const void *, const void *) __THROWNL;
 
@@ -265,16 +269,15 @@ next_brace_sub (const char *cp, int flags)
   return *cp != '\0' ? cp : NULL;
 }
 
-#endif /* !defined _LIBC || !defined GLOB_ONLY_P */
 
 /* Do glob searching for PATTERN, placing results in PGLOB.
    The bits defined above may be set in FLAGS.
    If a directory cannot be opened or read and ERRFUNC is not nil,
    it is called with the pathname that caused the error, and the
-   `errno' value from the failing call; if it returns non-zero
-   `glob' returns GLOB_ABORTED; if it returns zero, the error is ignored.
+   'errno' value from the failing call; if it returns non-zero
+   'glob' returns GLOB_ABORTED; if it returns zero, the error is ignored.
    If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
-   Otherwise, `glob' returns zero.  */
+   Otherwise, 'glob' returns zero.  */
 int
 #ifdef GLOB_ATTRIBUTE
 GLOB_ATTRIBUTE
@@ -292,9 +295,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
   int malloc_dirname = 0;
   glob_t dirs;
   int retval = 0;
-#ifdef _LIBC
   size_t alloca_used = 0;
-#endif
 
   if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
     {
@@ -308,7 +309,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
     flags |= GLOB_ONLYDIR;
 
   if (!(flags & GLOB_DOOFFS))
-    /* Have to do this so `globfree' knows where to start freeing.  It
+    /* Have to do this so 'globfree' knows where to start freeing.  It
        also makes all the code that uses gl_offs simpler. */
     pglob->gl_offs = 0;
 
@@ -372,14 +373,12 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  size_t rest_len;
 	  char *onealt;
 	  size_t pattern_len = strlen (pattern) - 1;
-#ifdef _LIBC
-	  int alloca_onealt = __libc_use_alloca (alloca_used + pattern_len);
+	  int alloca_onealt = glob_use_alloca (alloca_used, pattern_len);
 	  if (alloca_onealt)
 	    onealt = alloca_account (pattern_len, alloca_used);
 	  else
-#endif
 	    {
-	      onealt = (char *) malloc (pattern_len);
+	      onealt = malloc (pattern_len);
 	      if (onealt == NULL)
 		return GLOB_NOSPACE;
 	    }
@@ -392,11 +391,9 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  next = next_brace_sub (begin + 1, flags);
 	  if (next == NULL)
 	    {
-	      /* It is an illegal expression.  */
+	      /* It is an invalid expression.  */
 	    illegal_brace:
-#ifdef _LIBC
 	      if (__glibc_unlikely (!alloca_onealt))
-#endif
 		free (onealt);
 	      flags &= ~GLOB_BRACE;
 	      goto no_brace;
@@ -437,9 +434,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      /* If we got an error, return it.  */
 	      if (result && result != GLOB_NOMATCH)
 		{
-#ifdef _LIBC
 		  if (__glibc_unlikely (!alloca_onealt))
-#endif
 		    free (onealt);
 		  if (!(flags & GLOB_APPEND))
 		    {
@@ -458,9 +453,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      assert (next != NULL);
 	    }
 
-#ifdef _LIBC
 	  if (__glibc_unlikely (!alloca_onealt))
-#endif
 	    free (onealt);
 
 	  if (pglob->gl_pathc != firstc)
@@ -476,14 +469,16 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 
   /* Find the filename.  */
   filename = strrchr (pattern, '/');
+
 #if defined __MSDOS__ || defined WINDOWS32
-  /* The case of "d:pattern".  Since `:' is not allowed in
+  /* The case of "d:pattern".  Since ':' is not allowed in
      file names, we can safely assume that wherever it
      happens in pattern, it signals the filename part.  This
      is so we could some day support patterns like "[a-z]:foo".  */
   if (filename == NULL)
     filename = strchr (pattern, ':');
 #endif /* __MSDOS__ || WINDOWS32 */
+
   dirname_modified = 0;
   if (filename == NULL)
     {
@@ -508,11 +503,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	    }
 
 	  filename = pattern;
-#ifdef _AMIGA
-	  dirname = (char *) "";
-#else
 	  dirname = (char *) ".";
-#endif
 	  dirlen = 0;
 	}
     }
@@ -536,22 +527,21 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  char *drive_spec;
 
 	  ++dirlen;
-	  drive_spec = (char *) __alloca (dirlen + 1);
+	  drive_spec = __alloca (dirlen + 1);
 	  *((char *) mempcpy (drive_spec, pattern, dirlen)) = '\0';
 	  /* For now, disallow wildcards in the drive spec, to
 	     prevent infinite recursion in glob.  */
 	  if (__glob_pattern_p (drive_spec, !(flags & GLOB_NOESCAPE)))
 	    return GLOB_NOMATCH;
-	  /* If this is "d:pattern", we need to copy `:' to DIRNAME
+	  /* If this is "d:pattern", we need to copy ':' to DIRNAME
 	     as well.  If it's "d:/pattern", don't remove the slash
 	     from "d:/", since "d:" and "d:/" are not the same.*/
 	}
 #endif
-#ifdef _LIBC
-      if (__libc_use_alloca (alloca_used + dirlen + 1))
+
+      if (glob_use_alloca (alloca_used, dirlen + 1))
 	newp = alloca_account (dirlen + 1, alloca_used);
       else
-#endif
 	{
 	  newp = malloc (dirlen + 1);
 	  if (newp == NULL)
@@ -562,14 +552,17 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
       dirname = newp;
       ++filename;
 
-      if (filename[0] == '\0'
 #if defined __MSDOS__ || defined WINDOWS32
-	  && dirname[dirlen - 1] != ':'
-	  && (dirlen < 3 || dirname[dirlen - 2] != ':'
-	      || dirname[dirlen - 1] != '/')
+      bool drive_root = (dirlen > 1
+                         && (dirname[dirlen - 1] == ':'
+                             || (dirlen > 2 && dirname[dirlen - 2] == ':'
+                                 && dirname[dirlen - 1] == '/')));
+#else
+      bool drive_root = false;
 #endif
-	  && dirlen > 1)
-	/* "pattern/".  Expand "pattern", appending slashes.  */
+
+      if (filename[0] == '\0' && dirlen > 1 && !drive_root)
+        /* "pattern/".  Expand "pattern", appending slashes.  */
 	{
 	  int orig_flags = flags;
 	  if (!(flags & GLOB_NOESCAPE) && dirname[dirlen - 1] == '\\')
@@ -602,7 +595,6 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	}
     }
 
-#ifndef VMS
   if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && dirname[0] == '~')
     {
       if (dirname[1] == '\0' || dirname[1] == '/'
@@ -612,100 +604,127 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  /* Look up home directory.  */
 	  char *home_dir = getenv ("HOME");
 	  int malloc_home_dir = 0;
-# ifdef _AMIGA
-	  if (home_dir == NULL || home_dir[0] == '\0')
-	    home_dir = "SYS:";
-# else
-#  ifdef WINDOWS32
-	  if (home_dir == NULL || home_dir[0] == '\0')
-	    home_dir = "c:/users/default"; /* poor default */
-#  else
 	  if (home_dir == NULL || home_dir[0] == '\0')
 	    {
+#ifdef WINDOWS32
+	      /* Windows NT defines HOMEDRIVE and HOMEPATH.  But give
+		 preference to HOME, because the user can change HOME.  */
+	      const char *home_drive = getenv ("HOMEDRIVE");
+	      const char *home_path = getenv ("HOMEPATH");
+
+	      if (home_drive != NULL && home_path != NULL)
+		{
+		  size_t home_drive_len = strlen (home_drive);
+		  size_t home_path_len = strlen (home_path);
+		  char *mem = alloca (home_drive_len + home_path_len + 1);
+
+		  memcpy (mem, home_drive, home_drive_len);
+		  memcpy (mem + home_drive_len, home_path, home_path_len + 1);
+		  home_dir = mem;
+		}
+	      else
+		home_dir = "c:/users/default"; /* poor default */
+#else
 	      int success;
 	      char *name;
+	      int malloc_name = 0;
 	      size_t buflen = GET_LOGIN_NAME_MAX () + 1;
 
 	      if (buflen == 0)
-		/* `sysconf' does not support _SC_LOGIN_NAME_MAX.  Try
+		/* 'sysconf' does not support _SC_LOGIN_NAME_MAX.  Try
 		   a moderate value.  */
 		buflen = 20;
-	      name = alloca_account (buflen, alloca_used);
+	      if (glob_use_alloca (alloca_used, buflen))
+		name = alloca_account (buflen, alloca_used);
+	      else
+		{
+		  name = malloc (buflen);
+		  if (name == NULL)
+		    {
+		      retval = GLOB_NOSPACE;
+		      goto out;
+		    }
+		  malloc_name = 1;
+		}
 
 	      success = __getlogin_r (name, buflen) == 0;
 	      if (success)
 		{
 		  struct passwd *p;
-#   if defined HAVE_GETPWNAM_R || defined _LIBC
-		  long int pwbuflen = GETPW_R_SIZE_MAX ();
+		  char *malloc_pwtmpbuf = NULL;
 		  char *pwtmpbuf;
+# if defined HAVE_GETPWNAM_R || defined _LIBC
+		  long int pwbuflenmax = GETPW_R_SIZE_MAX ();
+		  size_t pwbuflen = pwbuflenmax;
 		  struct passwd pwbuf;
-		  int malloc_pwtmpbuf = 0;
 		  int save = errno;
 
-#    ifndef _LIBC
-		  if (pwbuflen == -1)
-		    /* `sysconf' does not support _SC_GETPW_R_SIZE_MAX.
+#  ifndef _LIBC
+		  if (! (0 < pwbuflenmax && pwbuflenmax <= SIZE_MAX))
+		    /* 'sysconf' does not support _SC_GETPW_R_SIZE_MAX.
 		       Try a moderate value.  */
 		    pwbuflen = 1024;
-#    endif
-		  if (__libc_use_alloca (alloca_used + pwbuflen))
+#  endif
+		  if (glob_use_alloca (alloca_used, pwbuflen))
 		    pwtmpbuf = alloca_account (pwbuflen, alloca_used);
 		  else
 		    {
 		      pwtmpbuf = malloc (pwbuflen);
 		      if (pwtmpbuf == NULL)
 			{
+			  if (__glibc_unlikely (malloc_name))
+			    free (name);
 			  retval = GLOB_NOSPACE;
 			  goto out;
 			}
-		      malloc_pwtmpbuf = 1;
+		      malloc_pwtmpbuf = pwtmpbuf;
 		    }
 
 		  while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
 			 != 0)
 		    {
+		      size_t newlen;
+		      bool v;
 		      if (errno != ERANGE)
 			{
 			  p = NULL;
 			  break;
 			}
-
-		      if (!malloc_pwtmpbuf
-			  && __libc_use_alloca (alloca_used
-						+ 2 * pwbuflen))
+		      v = size_add_wrapv (pwbuflen, pwbuflen, &newlen);
+		      if (!v && malloc_pwtmpbuf == NULL
+			  && glob_use_alloca (alloca_used, newlen))
 			pwtmpbuf = extend_alloca_account (pwtmpbuf, pwbuflen,
-							  2 * pwbuflen,
-							  alloca_used);
+							  newlen, alloca_used);
 		      else
 			{
-			  char *newp = realloc (malloc_pwtmpbuf
-						? pwtmpbuf : NULL,
-						2 * pwbuflen);
+			  char *newp = (v ? NULL
+					: realloc (malloc_pwtmpbuf, newlen));
 			  if (newp == NULL)
 			    {
-			      if (__glibc_unlikely (malloc_pwtmpbuf))
-				free (pwtmpbuf);
+			      free (malloc_pwtmpbuf);
+			      if (__glibc_unlikely (malloc_name))
+				free (name);
 			      retval = GLOB_NOSPACE;
 			      goto out;
 			    }
-			  pwtmpbuf = newp;
-			  pwbuflen = 2 * pwbuflen;
-			  malloc_pwtmpbuf = 1;
+			  malloc_pwtmpbuf = pwtmpbuf = newp;
 			}
+		      pwbuflen = newlen;
 		      __set_errno (save);
 		    }
-#   else
+# else
 		  p = getpwnam (name);
-#   endif
+# endif
+		  if (__glibc_unlikely (malloc_name))
+		    free (name);
 		  if (p != NULL)
 		    {
-		      if (!malloc_pwtmpbuf)
+		      if (malloc_pwtmpbuf == NULL)
 			home_dir = p->pw_dir;
 		      else
 			{
 			  size_t home_dir_len = strlen (p->pw_dir) + 1;
-			  if (__libc_use_alloca (alloca_used + home_dir_len))
+			  if (glob_use_alloca (alloca_used, home_dir_len))
 			    home_dir = alloca_account (home_dir_len,
 						       alloca_used);
 			  else
@@ -720,26 +739,32 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 			      malloc_home_dir = 1;
 			    }
 			  memcpy (home_dir, p->pw_dir, home_dir_len);
-
-			  free (pwtmpbuf);
 			}
 		    }
+		  free (malloc_pwtmpbuf);
 		}
+	      else
+		{
+		  if (__glibc_unlikely (malloc_name))
+		    free (name);
+		}
+#endif /* WINDOWS32 */
 	    }
 	  if (home_dir == NULL || home_dir[0] == '\0')
 	    {
+	      if (__glibc_unlikely (malloc_home_dir))
+		free (home_dir);
 	      if (flags & GLOB_TILDE_CHECK)
 		{
-		  if (__glibc_unlikely (malloc_home_dir))
-		    free (home_dir);
 		  retval = GLOB_NOMATCH;
 		  goto out;
 		}
 	      else
-		home_dir = (char *) "~"; /* No luck.  */
+		{
+		  home_dir = (char *) "~"; /* No luck.  */
+		  malloc_home_dir = 0;
+		}
 	    }
-#  endif /* WINDOWS32 */
-# endif
 	  /* Now construct the full directory.  */
 	  if (dirname[1] == '\0')
 	    {
@@ -754,8 +779,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	    {
 	      char *newp;
 	      size_t home_len = strlen (home_dir);
-	      int use_alloca = __libc_use_alloca (alloca_used
-						  + home_len + dirlen);
+	      int use_alloca = glob_use_alloca (alloca_used, home_len + dirlen);
 	      if (use_alloca)
 		newp = alloca_account (home_len + dirlen, alloca_used);
 	      else
@@ -779,12 +803,15 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      dirname = newp;
 	      dirlen += home_len - 1;
 	      malloc_dirname = !use_alloca;
+
+	      if (__glibc_unlikely (malloc_home_dir))
+		free (home_dir);
 	    }
 	  dirname_modified = 1;
 	}
-# if !defined _AMIGA && !defined WINDOWS32
       else
 	{
+#ifndef WINDOWS32
 	  char *end_name = strchr (dirname, '/');
 	  char *user_name;
 	  int malloc_user_name = 0;
@@ -806,7 +833,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  else
 	    {
 	      char *newp;
-	      if (__libc_use_alloca (alloca_used + (end_name - dirname)))
+	      if (glob_use_alloca (alloca_used, end_name - dirname))
 		newp = alloca_account (end_name - dirname, alloca_used);
 	      else
 		{
@@ -851,20 +878,21 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  /* Look up specific user's home directory.  */
 	  {
 	    struct passwd *p;
+	    char *malloc_pwtmpbuf = NULL;
 #  if defined HAVE_GETPWNAM_R || defined _LIBC
-	    long int buflen = GETPW_R_SIZE_MAX ();
+	    long int buflenmax = GETPW_R_SIZE_MAX ();
+	    size_t buflen = buflenmax;
 	    char *pwtmpbuf;
-	    int malloc_pwtmpbuf = 0;
 	    struct passwd pwbuf;
 	    int save = errno;
 
 #   ifndef _LIBC
-	    if (buflen == -1)
-	      /* `sysconf' does not support _SC_GETPW_R_SIZE_MAX.  Try a
+	    if (! (0 <= buflenmax && buflenmax <= SIZE_MAX))
+	      /* Perhaps 'sysconf' does not support _SC_GETPW_R_SIZE_MAX.  Try a
 		 moderate value.  */
 	      buflen = 1024;
 #   endif
-	    if (__libc_use_alloca (alloca_used + buflen))
+	    if (glob_use_alloca (alloca_used, buflen))
 	      pwtmpbuf = alloca_account (buflen, alloca_used);
 	    else
 	      {
@@ -877,32 +905,32 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 		    retval = GLOB_NOSPACE;
 		    goto out;
 		  }
-		malloc_pwtmpbuf = 1;
+		malloc_pwtmpbuf = pwtmpbuf;
 	      }
 
 	    while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
 	      {
+		size_t newlen;
+		bool v;
 		if (errno != ERANGE)
 		  {
 		    p = NULL;
 		    break;
 		  }
-		if (!malloc_pwtmpbuf
-		    && __libc_use_alloca (alloca_used + 2 * buflen))
+		v = size_add_wrapv (buflen, buflen, &newlen);
+		if (!v && malloc_pwtmpbuf == NULL
+		    && glob_use_alloca (alloca_used, newlen))
 		  pwtmpbuf = extend_alloca_account (pwtmpbuf, buflen,
-						    2 * buflen, alloca_used);
+						    newlen, alloca_used);
 		else
 		  {
-		    char *newp = realloc (malloc_pwtmpbuf ? pwtmpbuf : NULL,
-					  2 * buflen);
+		    char *newp = v ? NULL : realloc (malloc_pwtmpbuf, newlen);
 		    if (newp == NULL)
 		      {
-			if (__glibc_unlikely (malloc_pwtmpbuf))
-			  free (pwtmpbuf);
+			free (malloc_pwtmpbuf);
 			goto nomem_getpw;
 		      }
-		    pwtmpbuf = newp;
-		    malloc_pwtmpbuf = 1;
+		    malloc_pwtmpbuf = pwtmpbuf = newp;
 		  }
 		__set_errno (save);
 	      }
@@ -923,7 +951,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 		  free (dirname);
 		malloc_dirname = 0;
 
-		if (__libc_use_alloca (alloca_used + home_len + rest_len + 1))
+		if (glob_use_alloca (alloca_used, home_len + rest_len + 1))
 		  dirname = alloca_account (home_len + rest_len + 1,
 					    alloca_used);
 		else
@@ -931,8 +959,7 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 		    dirname = malloc (home_len + rest_len + 1);
 		    if (dirname == NULL)
 		      {
-			if (__glibc_unlikely (malloc_pwtmpbuf))
-			  free (pwtmpbuf);
+			free (malloc_pwtmpbuf);
 			retval = GLOB_NOSPACE;
 			goto out;
 		      }
@@ -944,24 +971,24 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 		dirlen = home_len + rest_len;
 		dirname_modified = 1;
 
-		if (__glibc_unlikely (malloc_pwtmpbuf))
-		  free (pwtmpbuf);
+		free (malloc_pwtmpbuf);
 	      }
 	    else
 	      {
-		if (__glibc_unlikely (malloc_pwtmpbuf))
-		  free (pwtmpbuf);
+		free (malloc_pwtmpbuf);
 
 		if (flags & GLOB_TILDE_CHECK)
-		  /* We have to regard it as an error if we cannot find the
-		     home directory.  */
-		  return GLOB_NOMATCH;
+		  {
+		    /* We have to regard it as an error if we cannot find the
+		       home directory.  */
+		    retval = GLOB_NOMATCH;
+		    goto out;
+		  }
 	      }
 	  }
+#endif /* !WINDOWS32 */
 	}
-# endif	/* Not Amiga && not WINDOWS32.  */
     }
-#endif	/* Not VMS.  */
 
   /* Now test whether we looked for "~" or "~NAME".  In this case we
      can give the answer now.  */
@@ -980,19 +1007,18 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  size_t newcount = pglob->gl_pathc + pglob->gl_offs;
 	  char **new_gl_pathv;
 
-	  if (newcount > UINTPTR_MAX - (1 + 1)
-	      || newcount + 1 + 1 > ~((size_t) 0) / sizeof (char *))
+	  if (newcount > SIZE_MAX / sizeof (char *) - 2)
 	    {
 	    nospace:
 	      free (pglob->gl_pathv);
 	      pglob->gl_pathv = NULL;
 	      pglob->gl_pathc = 0;
-	      return GLOB_NOSPACE;
+	      retval = GLOB_NOSPACE;
+	      goto out;
 	    }
 
-	  new_gl_pathv
-	    = (char **) realloc (pglob->gl_pathv,
-				 (newcount + 1 + 1) * sizeof (char *));
+	  new_gl_pathv = realloc (pglob->gl_pathv,
+				  (newcount + 2) * sizeof (char *));
 	  if (new_gl_pathv == NULL)
 	    goto nospace;
 	  pglob->gl_pathv = new_gl_pathv;
@@ -1006,12 +1032,19 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      p = mempcpy (pglob->gl_pathv[newcount], dirname, dirlen);
 	      p[0] = '/';
 	      p[1] = '\0';
+	      if (__glibc_unlikely (malloc_dirname))
+		free (dirname);
 	    }
 	  else
 	    {
-	      pglob->gl_pathv[newcount] = strdup (dirname);
-	      if (pglob->gl_pathv[newcount] == NULL)
-		goto nospace;
+	      if (__glibc_unlikely (malloc_dirname))
+		pglob->gl_pathv[newcount] = dirname;
+	      else
+		{
+		  pglob->gl_pathv[newcount] = strdup (dirname);
+		  if (pglob->gl_pathv[newcount] == NULL)
+		    goto nospace;
+		}
 	    }
 	  pglob->gl_pathv[++newcount] = NULL;
 	  ++pglob->gl_pathc;
@@ -1021,7 +1054,8 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	}
 
       /* Not found.  */
-      return GLOB_NOMATCH;
+      retval = GLOB_NOMATCH;
+      goto out;
     }
 
   meta = __glob_pattern_type (dirname, !(flags & GLOB_NOESCAPE));
@@ -1067,7 +1101,10 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
       if (status != 0)
 	{
 	  if ((flags & GLOB_NOCHECK) == 0 || status != GLOB_NOMATCH)
-	    return status;
+	    {
+	      retval = status;
+	      goto out;
+	    }
 	  goto no_matches;
 	}
 
@@ -1078,19 +1115,6 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	{
 	  size_t old_pathc;
 
-#ifdef	SHELL
-	  {
-	    /* Make globbing interruptible in the bash shell. */
-	    extern int interrupt_state;
-
-	    if (interrupt_state)
-	      {
-		globfree (&dirs);
-		return GLOB_ABORTED;
-	      }
-	  }
-#endif /* SHELL.  */
-
 	  old_pathc = pglob->gl_pathc;
 	  status = glob_in_dir (filename, dirs.gl_pathv[i],
 				((flags | GLOB_APPEND)
@@ -1105,7 +1129,8 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      globfree (&dirs);
 	      globfree (pglob);
 	      pglob->gl_pathc = 0;
-	      return status;
+	      retval = status;
+	      goto out;
 	    }
 
 	  /* Stick the directory on the front of each name.  */
@@ -1116,13 +1141,14 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      globfree (&dirs);
 	      globfree (pglob);
 	      pglob->gl_pathc = 0;
-	      return GLOB_NOSPACE;
+	      retval = GLOB_NOSPACE;
+	      goto out;
 	    }
 	}
 
       flags |= GLOB_MAGCHAR;
 
-      /* We have ignored the GLOB_NOCHECK flag in the `glob_in_dir' calls.
+      /* We have ignored the GLOB_NOCHECK flag in the 'glob_in_dir' calls.
 	 But if we have not found any matching entry and the GLOB_NOCHECK
 	 flag was set we must return the input pattern itself.  */
       if (pglob->gl_pathc + pglob->gl_offs == oldcount)
@@ -1134,28 +1160,28 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      size_t newcount = pglob->gl_pathc + pglob->gl_offs;
 	      char **new_gl_pathv;
 
-	      if (newcount > UINTPTR_MAX - 2
-		  || newcount + 2 > ~((size_t) 0) / sizeof (char *))
+	      if (newcount > SIZE_MAX / sizeof (char *) - 2)
 		{
 		nospace2:
 		  globfree (&dirs);
-		  return GLOB_NOSPACE;
+		  retval = GLOB_NOSPACE;
+		  goto out;
 		}
 
-	      new_gl_pathv = (char **) realloc (pglob->gl_pathv,
-						(newcount + 2)
-						* sizeof (char *));
+	      new_gl_pathv = realloc (pglob->gl_pathv,
+				      (newcount + 2) * sizeof (char *));
 	      if (new_gl_pathv == NULL)
 		goto nospace2;
 	      pglob->gl_pathv = new_gl_pathv;
 
-	      pglob->gl_pathv[newcount] = __strdup (pattern);
+	      pglob->gl_pathv[newcount] = strdup (pattern);
 	      if (pglob->gl_pathv[newcount] == NULL)
 		{
 		  globfree (&dirs);
 		  globfree (pglob);
 		  pglob->gl_pathc = 0;
-		  return GLOB_NOSPACE;
+		  retval = GLOB_NOSPACE;
+		  goto out;
 		}
 
 	      ++pglob->gl_pathc;
@@ -1167,7 +1193,8 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	  else
 	    {
 	      globfree (&dirs);
-	      return GLOB_NOMATCH;
+	      retval = GLOB_NOMATCH;
+	      goto out;
 	    }
 	}
 
@@ -1213,7 +1240,8 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      flags = orig_flags;
 	      goto no_matches;
 	    }
-	  return status;
+	  retval = status;
+	  goto out;
 	}
 
       if (dirlen > 0)
@@ -1225,7 +1253,8 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	    {
 	      globfree (pglob);
 	      pglob->gl_pathc = 0;
-	      return GLOB_NOSPACE;
+	      retval = GLOB_NOSPACE;
+	      goto out;
 	    }
 	}
     }
@@ -1250,7 +1279,8 @@ glob (const char *pattern, int flags, int (*errfunc) (const char *, int),
 	      {
 		globfree (pglob);
 		pglob->gl_pathc = 0;
-		return GLOB_NOSPACE;
+		retval = GLOB_NOSPACE;
+		goto out;
 	      }
 	    strcpy (&new[len - 2], "/");
 	    pglob->gl_pathv[i] = new;
@@ -1276,32 +1306,12 @@ libc_hidden_def (glob)
 #endif
 
 
-#if !defined _LIBC || !defined GLOB_ONLY_P
-
-/* Free storage allocated in PGLOB by a previous `glob' call.  */
-void
-globfree (glob_t *pglob)
-{
-  if (pglob->gl_pathv != NULL)
-    {
-      size_t i;
-      for (i = 0; i < pglob->gl_pathc; ++i)
-	free (pglob->gl_pathv[pglob->gl_offs + i]);
-      free (pglob->gl_pathv);
-      pglob->gl_pathv = NULL;
-    }
-}
-#if defined _LIBC && !defined globfree
-libc_hidden_def (globfree)
-#endif
-
-
 /* Do a collated comparison of A and B.  */
 static int
 collated_compare (const void *a, const void *b)
 {
-  const char *const s1 = *(const char *const * const) a;
-  const char *const s2 = *(const char *const * const) b;
+  char *const *ps1 = a; char *s1 = *ps1;
+  char *const *ps2 = b; char *s2 = *ps2;
 
   if (s1 == s2)
     return 0;
@@ -1322,28 +1332,24 @@ prefix_array (const char *dirname, char **array, size_t n)
 {
   size_t i;
   size_t dirlen = strlen (dirname);
-#if defined __MSDOS__ || defined WINDOWS32
-  int sep_char = '/';
-# define DIRSEP_CHAR sep_char
-#else
-# define DIRSEP_CHAR '/'
-#endif
+  char dirsep_char = '/';
 
   if (dirlen == 1 && dirname[0] == '/')
     /* DIRNAME is just "/", so normal prepending would get us "//foo".
        We want "/foo" instead, so don't prepend any chars from DIRNAME.  */
     dirlen = 0;
+
 #if defined __MSDOS__ || defined WINDOWS32
-  else if (dirlen > 1)
+  if (dirlen > 1)
     {
       if (dirname[dirlen - 1] == '/' && dirname[dirlen - 2] == ':')
 	/* DIRNAME is "d:/".  Don't prepend the slash from DIRNAME.  */
 	--dirlen;
       else if (dirname[dirlen - 1] == ':')
 	{
-	  /* DIRNAME is "d:".  Use `:' instead of `/'.  */
+	  /* DIRNAME is "d:".  Use ':' instead of '/'.  */
 	  --dirlen;
-	  sep_char = ':';
+	  dirsep_char = ':';
 	}
     }
 #endif
@@ -1351,7 +1357,7 @@ prefix_array (const char *dirname, char **array, size_t n)
   for (i = 0; i < n; ++i)
     {
       size_t eltlen = strlen (array[i]) + 1;
-      char *new = (char *) malloc (dirlen + 1 + eltlen);
+      char *new = malloc (dirlen + 1 + eltlen);
       if (new == NULL)
 	{
 	  while (i > 0)
@@ -1361,7 +1367,7 @@ prefix_array (const char *dirname, char **array, size_t n)
 
       {
 	char *endp = mempcpy (new, dirname, dirlen);
-	*endp++ = DIRSEP_CHAR;
+	*endp++ = dirsep_char;
 	mempcpy (endp, array[i], eltlen);
       }
       free (array[i]);
@@ -1371,103 +1377,57 @@ prefix_array (const char *dirname, char **array, size_t n)
   return 0;
 }
 
-
-/* We must not compile this function twice.  */
-#if !defined _LIBC || !defined NO_GLOB_PATTERN_P
-int
-__glob_pattern_type (const char *pattern, int quote)
-{
-  const char *p;
-  int ret = 0;
-
-  for (p = pattern; *p != '\0'; ++p)
-    switch (*p)
-      {
-      case '?':
-      case '*':
-	return 1;
-
-      case '\\':
-	if (quote)
-	  {
-	    if (p[1] != '\0')
-	      ++p;
-	    ret |= 2;
-	  }
-	break;
-
-      case '[':
-	ret |= 4;
-	break;
-
-      case ']':
-	if (ret & 4)
-	  return 1;
-	break;
-      }
-
-  return ret;
-}
-
-/* Return nonzero if PATTERN contains any metacharacters.
-   Metacharacters can be quoted with backslashes if QUOTE is nonzero.  */
-int
-__glob_pattern_p (const char *pattern, int quote)
-{
-  return __glob_pattern_type (pattern, quote) == 1;
-}
-# ifdef _LIBC
-weak_alias (__glob_pattern_p, glob_pattern_p)
-# endif
-#endif
-
-#endif /* !GLOB_ONLY_P */
-
-
 /* We put this in a separate function mainly to allow the memory
    allocated with alloca to be recycled.  */
-#if !defined _LIBC || !defined GLOB_ONLY_P
 static int
 __attribute_noinline__
-link_exists2_p (const char *dir, size_t dirlen, const char *fname,
-	       glob_t *pglob
-# ifndef _LIBC
-		, int flags
+link_stat (const char *dir, size_t dirlen, const char *fname,
+	   glob_t *pglob
+# if !defined _LIBC && !HAVE_FSTATAT
+	   , int flags
 # endif
-		)
+	   )
 {
   size_t fnamelen = strlen (fname);
-  char *fullname = (char *) __alloca (dirlen + 1 + fnamelen + 1);
+  char *fullname = __alloca (dirlen + 1 + fnamelen + 1);
   struct stat st;
-# ifndef _LIBC
-  struct_stat64 st64;
-# endif
 
   mempcpy (mempcpy (mempcpy (fullname, dir, dirlen), "/", 1),
 	   fname, fnamelen + 1);
 
-# ifdef _LIBC
-  return (*pglob->gl_stat) (fullname, &st) == 0;
-# else
-  return ((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
-	   ? (*pglob->gl_stat) (fullname, &st)
-	   : __stat64 (fullname, &st64)) == 0);
+# if !defined _LIBC && !HAVE_FSTATAT
+  if (__builtin_expect ((flags & GLOB_ALTDIRFUNC) == 0, 1))
+    {
+      struct_stat64 st64;
+      return __stat64 (fullname, &st64);
+    }
 # endif
+  return (*pglob->gl_stat) (fullname, &st);
 }
-# ifdef _LIBC
-#  define link_exists_p(dfd, dirname, dirnamelen, fname, pglob, flags) \
-  (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)			      \
-   ? link_exists2_p (dirname, dirnamelen, fname, pglob)			      \
-   : ({ struct stat64 st64;						      \
-       __fxstatat64 (_STAT_VER, dfd, fname, &st64, 0) == 0; }))
+
+/* Return true if DIR/FNAME exists.  */
+static int
+link_exists_p (int dfd, const char *dir, size_t dirlen, const char *fname,
+	       glob_t *pglob, int flags)
+{
+  int status;
+# if defined _LIBC || HAVE_FSTATAT
+  if (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0))
+    status = link_stat (dir, dirlen, fname, pglob);
+  else
+    {
+      /* dfd cannot be -1 here, because dirfd never returns -1 on
+	 glibc, or on hosts that have fstatat.  */
+      struct_stat64 st64;
+      status = __fxstatat64 (_STAT_VER, dfd, fname, &st64, 0);
+    }
 # else
-#  define link_exists_p(dfd, dirname, dirnamelen, fname, pglob, flags) \
-  link_exists2_p (dirname, dirnamelen, fname, pglob, flags)
+  status = link_stat (dir, dirlen, fname, pglob, flags);
 # endif
-#endif
-
+  return status == 0 || errno == EOVERFLOW;
+}
 
-/* Like `glob', but PATTERN is a final pathname component,
+/* Like 'glob', but PATTERN is a final pathname component,
    and matches are searched for in DIRECTORY.
    The GLOB_NOSORT bit in FLAGS is ignored.  No sorting is ever done.
    The GLOB_APPEND flag is assumed to be set (always appends).  */
@@ -1478,25 +1438,25 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 {
   size_t dirlen = strlen (directory);
   void *stream = NULL;
-  struct globnames
-    {
-      struct globnames *next;
-      size_t count;
-      char *name[64];
-    };
-#define INITIAL_COUNT sizeof (init_names.name) / sizeof (init_names.name[0])
-  struct globnames init_names;
-  struct globnames *names = &init_names;
-  struct globnames *names_alloca = &init_names;
+# define GLOBNAMES_MEMBERS(nnames) \
+    struct globnames *next; size_t count; char *name[nnames];
+  struct globnames { GLOBNAMES_MEMBERS (FLEXIBLE_ARRAY_MEMBER) };
+  struct { GLOBNAMES_MEMBERS (64) } init_names_buf;
+  struct globnames *init_names = (struct globnames *) &init_names_buf;
+  struct globnames *names = init_names;
+  struct globnames *names_alloca = init_names;
   size_t nfound = 0;
   size_t cur = 0;
   int meta;
   int save;
+  int result;
 
-  alloca_used += sizeof (init_names);
+  alloca_used += sizeof init_names_buf;
 
-  init_names.next = NULL;
-  init_names.count = INITIAL_COUNT;
+  init_names->next = NULL;
+  init_names->count = ((sizeof init_names_buf
+                        - offsetof (struct globnames, name))
+                       / sizeof init_names->name[0]);
 
   meta = __glob_pattern_type (pattern, !(flags & GLOB_NOESCAPE));
   if (meta == 0 && (flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
@@ -1516,14 +1476,16 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 	struct_stat64 st64;
       } ust;
       size_t patlen = strlen (pattern);
-      int alloca_fullname = __libc_use_alloca (alloca_used
-					       + dirlen + 1 + patlen + 1);
+      size_t fullsize;
+      bool alloca_fullname
+        = (! size_add_wrapv (dirlen + 1, patlen + 1, &fullsize)
+           && glob_use_alloca (alloca_used, fullsize));
       char *fullname;
       if (alloca_fullname)
-	fullname = alloca_account (dirlen + 1 + patlen + 1, alloca_used);
+        fullname = alloca_account (fullsize, alloca_used);
       else
 	{
-	  fullname = malloc (dirlen + 1 + patlen + 1);
+	  fullname = malloc (fullsize);
 	  if (fullname == NULL)
 	    return GLOB_NOSPACE;
 	}
@@ -1531,9 +1493,11 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
       mempcpy (mempcpy (mempcpy (fullname, directory, dirlen),
 			"/", 1),
 	       pattern, patlen + 1);
-      if ((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
+      if (((__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
 	   ? (*pglob->gl_stat) (fullname, &ust.st)
-	   : __stat64 (fullname, &ust.st64)) == 0)
+	    : __stat64 (fullname, &ust.st64))
+	   == 0)
+	  || errno == EOVERFLOW)
 	/* We found this file to be existing.  Now tell the rest
 	   of the function to copy this name into the result.  */
 	flags |= GLOB_NOCHECK;
@@ -1555,16 +1519,10 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 	}
       else
 	{
-#ifdef _LIBC
 	  int dfd = (__builtin_expect (flags & GLOB_ALTDIRFUNC, 0)
 		     ? -1 : dirfd ((DIR *) stream));
-#endif
 	  int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
-			   | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
-#if defined _AMIGA || defined VMS
-			   | FNM_CASEFOLD
-#endif
-			   );
+			   | ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0));
 	  flags |= GLOB_MAGCHAR;
 
 	  while (1)
@@ -1584,19 +1542,24 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 	      }
 	      if (d.name == NULL)
 		break;
-	      if (d.skip_entry)
+	      if (readdir_result_skip_entry (d))
 		continue;
 
 	      /* If we shall match only directories use the information
 		 provided by the dirent call if possible.  */
-	      if ((flags & GLOB_ONLYDIR) && !readdir_result_might_be_dir (d))
-		continue;
+	      if (flags & GLOB_ONLYDIR)
+		switch (readdir_result_type (d))
+		  {
+		  case DT_DIR: case DT_LNK: case DT_UNKNOWN: break;
+		  default: continue;
+		  }
 
 	      if (fnmatch (pattern, d.name, fnm_flags) == 0)
 		{
 		  /* If the file we found is a symlink we have to
 		     make sure the target file exists.  */
-		  if (!readdir_result_might_be_symlink (d)
+		  dirent_type type = readdir_result_type (d);
+		  if (! (type == DT_LNK || type == DT_UNKNOWN)
 		      || link_exists_p (dfd, directory, dirlen, d.name,
 					pglob, flags))
 		    {
@@ -1604,10 +1567,13 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 			{
 			  struct globnames *newnames;
 			  size_t count = names->count * 2;
-			  size_t size = (sizeof (struct globnames)
-					 + ((count - INITIAL_COUNT)
-					    * sizeof (char *)));
-			  if (__libc_use_alloca (alloca_used + size))
+			  size_t nameoff = offsetof (struct globnames, name);
+			  size_t size = FLEXSIZEOF (struct globnames, name,
+						    count * sizeof (char *));
+			  if ((SIZE_MAX - nameoff) / 2 / sizeof (char *)
+			      < names->count)
+			    goto memory_error;
+			  if (glob_use_alloca (alloca_used, size))
 			    newnames = names_alloca
 			      = alloca_account (size, alloca_used);
 			  else if ((newnames = malloc (size))
@@ -1623,6 +1589,8 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 			goto memory_error;
 		      ++cur;
 		      ++nfound;
+		      if (SIZE_MAX - pglob->gl_offs <= nfound)
+			goto memory_error;
 		    }
 		}
 	    }
@@ -1633,29 +1601,27 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
     {
       size_t len = strlen (pattern);
       nfound = 1;
-      names->name[cur] = (char *) malloc (len + 1);
+      names->name[cur] = malloc (len + 1);
       if (names->name[cur] == NULL)
 	goto memory_error;
       *((char *) mempcpy (names->name[cur++], pattern, len)) = '\0';
     }
 
-  int result = GLOB_NOMATCH;
+  result = GLOB_NOMATCH;
   if (nfound != 0)
     {
+      char **new_gl_pathv;
       result = 0;
 
-      if (pglob->gl_pathc > UINTPTR_MAX - pglob->gl_offs
-	  || pglob->gl_pathc + pglob->gl_offs > UINTPTR_MAX - nfound
-	  || pglob->gl_pathc + pglob->gl_offs + nfound > UINTPTR_MAX - 1
-	  || (pglob->gl_pathc + pglob->gl_offs + nfound + 1
-	      > UINTPTR_MAX / sizeof (char *)))
+      if (SIZE_MAX / sizeof (char *) - pglob->gl_pathc
+	  < pglob->gl_offs + nfound + 1)
 	goto memory_error;
 
-      char **new_gl_pathv;
       new_gl_pathv
-	= (char **) realloc (pglob->gl_pathv,
-			     (pglob->gl_pathc + pglob->gl_offs + nfound + 1)
-			     * sizeof (char *));
+	= realloc (pglob->gl_pathv,
+		   (pglob->gl_pathc + pglob->gl_offs + nfound + 1)
+		    * sizeof (char *));
+
       if (new_gl_pathv == NULL)
 	{
 	memory_error:
@@ -1671,7 +1637,7 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 		 and this is the block assigned to OLD here.  */
 	      if (names == NULL)
 		{
-		  assert (old == &init_names);
+		  assert (old == init_names);
 		  break;
 		}
 	      cur = names->count;
@@ -1697,7 +1663,7 @@ glob_in_dir (const char *pattern, const char *directory, int flags,
 		 and this is the block assigned to OLD here.  */
 	      if (names == NULL)
 		{
-		  assert (old == &init_names);
+		  assert (old == init_names);
 		  break;
 		}
 	      cur = names->count;
diff --git a/posix/glob64.c b/posix/glob64.c
index 6cb3d65..a515a1c 100644
--- a/posix/glob64.c
+++ b/posix/glob64.c
@@ -43,10 +43,4 @@ glob64 (const char *pattern, int flags,
 }
 libc_hidden_def (glob64)
 
-void
-globfree64 (glob64_t *pglob)
-{
-}
-libc_hidden_def (globfree64)
-
 stub_warning (glob64)
diff --git a/posix/glob_internal.h b/posix/glob_internal.h
new file mode 100644
index 0000000..12c9366
--- /dev/null
+++ b/posix/glob_internal.h
@@ -0,0 +1,57 @@
+/* Shared definition for glob and glob_pattern_p.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef GLOB_INTERNAL_H
+# define GLOB_INTERNAL_H
+
+static inline int
+__glob_pattern_type (const char *pattern, int quote)
+{
+  const char *p;
+  int ret = 0;
+
+  for (p = pattern; *p != '\0'; ++p)
+    switch (*p)
+      {
+      case '?':
+      case '*':
+        return 1;
+
+      case '\\':
+        if (quote)
+          {
+            if (p[1] != '\0')
+              ++p;
+            ret |= 2;
+          }
+        break;
+
+      case '[':
+        ret |= 4;
+        break;
+
+      case ']':
+        if (ret & 4)
+          return 1;
+        break;
+      }
+
+  return ret;
+}
+
+#endif /* GLOB_INTERNAL_H  */
diff --git a/posix/glob_pattern_p.c b/posix/glob_pattern_p.c
new file mode 100644
index 0000000..a17d337
--- /dev/null
+++ b/posix/glob_pattern_p.c
@@ -0,0 +1,33 @@
+/* Return nonzero if PATTERN contains any metacharacters.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+#include <glob.h>
+#include "glob_internal.h"
+
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.  */
+int
+__glob_pattern_p (const char *pattern, int quote)
+{
+  return __glob_pattern_type (pattern, quote) == 1;
+}
+weak_alias (__glob_pattern_p, glob_pattern_p)
diff --git a/posix/globfree.c b/posix/globfree.c
new file mode 100644
index 0000000..042e29d
--- /dev/null
+++ b/posix/globfree.c
@@ -0,0 +1,41 @@
+/* Frees the dynamically allocated storage from an earlier call to glob.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+#include <glob.h>
+#include <stdlib.h>
+
+/* Free storage allocated in PGLOB by a previous `glob' call.  */
+void
+globfree (glob_t *pglob)
+{
+  if (pglob->gl_pathv != NULL)
+    {
+      size_t i;
+      for (i = 0; i < pglob->gl_pathc; ++i)
+        free (pglob->gl_pathv[pglob->gl_offs + i]);
+      free (pglob->gl_pathv);
+      pglob->gl_pathv = NULL;
+    }
+}
+#ifndef globfree
+libc_hidden_def (globfree)
+#endif
diff --git a/posix/globfree64.c b/posix/globfree64.c
new file mode 100644
index 0000000..c9f8908
--- /dev/null
+++ b/posix/globfree64.c
@@ -0,0 +1,31 @@
+/* Frees the dynamically allocated storage from an earlier call to glob.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+#include <glob.h>
+#include <stdlib.h>
+
+/* Free storage allocated in PGLOB by a previous `glob' call.  */
+void
+globfree64 (glob64_t *pglob)
+{
+}
+libc_hidden_def (globfree64)
diff --git a/sysdeps/gnu/glob64.c b/sysdeps/gnu/glob64.c
index d1e4e6f..52e97e2 100644
--- a/sysdeps/gnu/glob64.c
+++ b/sysdeps/gnu/glob64.c
@@ -15,11 +15,8 @@
 #undef __stat
 #define __stat(file, buf) __xstat64 (_STAT_VER, file, buf)
 
-#define NO_GLOB_PATTERN_P 1
-
 #define COMPILE_GLOB64	1
 
 #include <posix/glob.c>
 
 libc_hidden_def (glob64)
-libc_hidden_def (globfree64)
diff --git a/sysdeps/gnu/globfree64.c b/sysdeps/gnu/globfree64.c
new file mode 100644
index 0000000..f092d0b
--- /dev/null
+++ b/sysdeps/gnu/globfree64.c
@@ -0,0 +1,10 @@
+#include <dirent.h>
+#include <glob.h>
+#include <sys/stat.h>
+
+#define glob_t glob64_t
+#define globfree(pglob) globfree64 (pglob)
+
+#include <posix/globfree.c>
+
+libc_hidden_def (globfree64)
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index e571fe2..30bd167 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -137,7 +137,7 @@ endif
 ifeq ($(subdir),posix)
 sysdep_headers += bits/initspin.h
 
-sysdep_routines += sched_getcpu
+sysdep_routines += sched_getcpu oldglob
 
 tests += tst-affinity tst-affinity-pid
 
diff --git a/sysdeps/unix/sysv/linux/alpha/glob.c b/sysdeps/unix/sysv/linux/alpha/glob.c
index 2d7d287..1b813c1 100644
--- a/sysdeps/unix/sysv/linux/alpha/glob.c
+++ b/sysdeps/unix/sysv/linux/alpha/glob.c
@@ -42,10 +42,6 @@ extern void __new_globfree (glob_t *__pglob);
 #undef globfree64
 
 versioned_symbol (libc, __new_glob, glob, GLIBC_2_1);
-versioned_symbol (libc, __new_globfree, globfree, GLIBC_2_1);
 libc_hidden_ver (__new_glob, glob)
-libc_hidden_ver (__new_globfree, globfree)
 
 weak_alias (__new_glob, glob64)
-weak_alias (__new_globfree, globfree64)
-libc_hidden_ver (__new_globfree, globfree64)
diff --git a/sysdeps/unix/sysv/linux/alpha/glob.c b/sysdeps/unix/sysv/linux/alpha/globfree.c
similarity index 65%
copy from sysdeps/unix/sysv/linux/alpha/glob.c
copy to sysdeps/unix/sysv/linux/alpha/globfree.c
index 2d7d287..98cf1c2 100644
--- a/sysdeps/unix/sysv/linux/alpha/glob.c
+++ b/sysdeps/unix/sysv/linux/alpha/globfree.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
+/* Compat globfree.  Linux/alpha version.
+   Copyright (C) 2017 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -15,37 +16,22 @@
    License along with the GNU C Library.  If not, see
    <http://www.gnu.org/licenses/>.  */
 
-#define glob64 __no_glob64_decl
 #define globfree64 __no_globfree64_decl
-
 #include <sys/types.h>
 #include <glob.h>
 #include <shlib-compat.h>
 
-/* For Linux/Alpha we have to make the glob symbols versioned.  */
-#define glob(pattern, flags, errfunc, pglob) \
-  __new_glob (pattern, flags, errfunc, pglob)
 #define globfree(pglob) \
   __new_globfree (pglob)
 
-/* We need prototypes for these new names.  */
-extern int __new_glob (const char *__pattern, int __flags,
-		       int (*__errfunc) (const char *, int),
-		       glob_t *__pglob);
 extern void __new_globfree (glob_t *__pglob);
 
-#include <posix/glob.c>
+#include <posix/globfree.c>
 
-#undef glob
-#undef globfree
-#undef glob64
 #undef globfree64
 
-versioned_symbol (libc, __new_glob, glob, GLIBC_2_1);
 versioned_symbol (libc, __new_globfree, globfree, GLIBC_2_1);
-libc_hidden_ver (__new_glob, glob)
 libc_hidden_ver (__new_globfree, globfree)
 
-weak_alias (__new_glob, glob64)
 weak_alias (__new_globfree, globfree64)
 libc_hidden_ver (__new_globfree, globfree64)
diff --git a/sysdeps/unix/sysv/linux/i386/glob64.c b/sysdeps/unix/sysv/linux/i386/glob64.c
index 956cb04..230f9fc 100644
--- a/sysdeps/unix/sysv/linux/i386/glob64.c
+++ b/sysdeps/unix/sysv/linux/i386/glob64.c
@@ -19,6 +19,7 @@
 #include <dirent.h>
 #include <glob.h>
 #include <sys/stat.h>
+#include <shlib-compat.h>
 
 #define dirent dirent64
 #define __readdir(dirp) __readdir64 (dirp)
@@ -33,47 +34,9 @@
 #undef __stat
 #define __stat(file, buf) __xstat64 (_STAT_VER, file, buf)
 
-#define NO_GLOB_PATTERN_P 1
-
 #define COMPILE_GLOB64	1
 
 #include <posix/glob.c>
 
-#include "shlib-compat.h"
-
-libc_hidden_def (globfree64)
-
 versioned_symbol (libc, __glob64, glob64, GLIBC_2_2);
 libc_hidden_ver (__glob64, glob64)
-
-#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
-
-#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
-
-int __old_glob64 (const char *__pattern, int __flags,
-		  int (*__errfunc) (const char *, int),
-		  glob64_t *__pglob);
-libc_hidden_proto (__old_glob64);
-
-#undef dirent
-#define dirent __old_dirent64
-#undef GL_READDIR
-# define GL_READDIR(pglob, stream) \
-  ((struct __old_dirent64 *) (pglob)->gl_readdir (stream))
-#undef __readdir
-#define __readdir(dirp) __old_readdir64 (dirp)
-#undef glob
-#define glob(pattern, flags, errfunc, pglob) \
-  __old_glob64 (pattern, flags, errfunc, pglob)
-#define convert_dirent __old_convert_dirent
-#define glob_in_dir __old_glob_in_dir
-#define GLOB_ATTRIBUTE attribute_compat_text_section
-
-#define GLOB_ONLY_P 1
-
-#include <posix/glob.c>
-
-libc_hidden_def (__old_glob64);
-
-compat_symbol (libc, __old_glob64, glob64, GLIBC_2_1);
-#endif
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c b/sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c
new file mode 100644
index 0000000..abc35fd
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/globfree64.c
@@ -0,0 +1 @@
+/* glob64 is in globfree64.c */
diff --git a/sysdeps/unix/sysv/linux/oldglob.c b/sysdeps/unix/sysv/linux/oldglob.c
new file mode 100644
index 0000000..8233e57
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/oldglob.c
@@ -0,0 +1,42 @@
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
+
+#include <dirent.h>
+#include <glob.h>
+#include <sys/stat.h>
+
+#include <sysdeps/unix/sysv/linux/i386/olddirent.h>
+
+int __old_glob64 (const char *__pattern, int __flags,
+		  int (*__errfunc) (const char *, int),
+		  glob64_t *__pglob);
+libc_hidden_proto (__old_glob64);
+
+#define dirent __old_dirent64
+#define GL_READDIR(pglob, stream) \
+  ((struct __old_dirent64 *) (pglob)->gl_readdir (stream))
+#undef __readdir
+#define __readdir(dirp) __old_readdir64 (dirp)
+
+#define glob_t glob64_t
+#define glob(pattern, flags, errfunc, pglob) \
+  __old_glob64 (pattern, flags, errfunc, pglob)
+#define globfree(pglob) globfree64(pglob)
+
+#define convert_dirent __old_convert_dirent
+#define glob_in_dir __old_glob_in_dir
+
+#undef stat
+#define stat stat64
+#undef __stat
+#define __stat(file, buf) __xstat64 (_STAT_VER, file, buf)
+
+#define GLOB_ATTRIBUTE attribute_compat_text_section
+
+#include <posix/glob.c>
+
+libc_hidden_def (__old_glob64);
+
+compat_symbol (libc, __old_glob64, glob64, GLIBC_2_1);
+#endif
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/globfree64.c b/sysdeps/unix/sysv/linux/wordsize-64/globfree64.c
new file mode 100644
index 0000000..af035e1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/wordsize-64/globfree64.c
@@ -0,0 +1,2 @@
+/* This file is here so sysdeps/gnu/glob64.c doesn't take precedence.  */
+#include <sysdeps/wordsize-64/globfree64.c>
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/globfree.c b/sysdeps/unix/sysv/linux/x86_64/x32/globfree.c
new file mode 100644
index 0000000..b76a761
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/globfree.c
@@ -0,0 +1 @@
+#include <sysdeps/wordsize-64/globfree.c>
diff --git a/sysdeps/wordsize-64/glob.c b/sysdeps/wordsize-64/glob.c
index 082faf1..954e8d3 100644
--- a/sysdeps/wordsize-64/glob.c
+++ b/sysdeps/wordsize-64/glob.c
@@ -4,5 +4,3 @@
 #undef glob64
 #undef globfree64
 weak_alias (glob, glob64)
-weak_alias (globfree, globfree64)
-libc_hidden_ver (globfree, globfree64)
diff --git a/sysdeps/wordsize-64/glob.c b/sysdeps/wordsize-64/globfree.c
similarity index 57%
copy from sysdeps/wordsize-64/glob.c
copy to sysdeps/wordsize-64/globfree.c
index 082faf1..ec8c35b 100644
--- a/sysdeps/wordsize-64/glob.c
+++ b/sysdeps/wordsize-64/globfree.c
@@ -1,8 +1,5 @@
-#define glob64 __no_glob64_decl
 #define globfree64 __no_globfree64_decl
-#include <posix/glob.c>
-#undef glob64
+#include <posix/globfree.c>
 #undef globfree64
-weak_alias (glob, glob64)
 weak_alias (globfree, globfree64)
 libc_hidden_ver (globfree, globfree64)
diff --git a/sysdeps/wordsize-64/globfree64.c b/sysdeps/wordsize-64/globfree64.c
new file mode 100644
index 0000000..a0f57ff
--- /dev/null
+++ b/sysdeps/wordsize-64/globfree64.c
@@ -0,0 +1 @@
+/* globfree64 is in globfree.c */

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                          |  133 +++
 include/scratch_buffer.h                           |    3 +-
 malloc/scratch_buffer_grow.c                       |    6 +-
 malloc/scratch_buffer_grow_preserve.c              |    6 +-
 malloc/scratch_buffer_set_array_size.c             |    6 +-
 posix/Makefile                                     |    6 +-
 posix/bug-glob1.c                                  |   88 --
 posix/flexmember.h                                 |   45 +
 posix/glob.c                                       |  982 +++++++-------------
 posix/glob64.c                                     |    6 -
 posix/glob_internal.h                              |   65 ++
 posix/glob_pattern_p.c                             |   33 +
 posix/globfree.c                                   |   41 +
 posix/globfree64.c                                 |   31 +
 posix/tst-glob_symlinks.c                          |  135 +++
 sysdeps/gnu/glob64.c                               |    3 -
 sysdeps/gnu/globfree64.c                           |   10 +
 sysdeps/unix/sysv/linux/Makefile                   |    2 +-
 sysdeps/unix/sysv/linux/alpha/glob.c               |    4 -
 sysdeps/unix/sysv/linux/alpha/globfree.c           |   37 +
 sysdeps/unix/sysv/linux/arm/glob64.c               |    1 -
 sysdeps/unix/sysv/linux/glob.c                     |   28 +
 sysdeps/unix/sysv/linux/glob64.c                   |   51 +
 sysdeps/unix/sysv/linux/globfree.c                 |   30 +
 sysdeps/unix/sysv/linux/globfree64.c               |   36 +
 sysdeps/unix/sysv/linux/i386/alphasort64.c         |    2 +-
 sysdeps/unix/sysv/linux/i386/getdents64.c          |    2 +-
 sysdeps/unix/sysv/linux/i386/glob64.c              |   79 --
 sysdeps/unix/sysv/linux/i386/readdir64.c           |    2 +-
 sysdeps/unix/sysv/linux/i386/readdir64_r.c         |    2 +-
 sysdeps/unix/sysv/linux/i386/versionsort64.c       |    2 +-
 sysdeps/unix/sysv/linux/m68k/glob64.c              |    1 -
 sysdeps/unix/sysv/linux/mips/mips64/n64/glob64.c   |    1 -
 sysdeps/unix/sysv/linux/{i386 => }/olddirent.h     |    0
 sysdeps/unix/sysv/linux/oldglob.c                  |   43 +
 sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c |    1 -
 sysdeps/unix/sysv/linux/s390/s390-32/glob64.c      |    2 +
 sysdeps/unix/sysv/linux/sparc/sparc32/glob64.c     |    1 -
 sysdeps/unix/sysv/linux/wordsize-64/glob64.c       |    2 -
 sysdeps/unix/sysv/linux/x86_64/x32/glob.c          |    1 -
 sysdeps/wordsize-64/glob.c                         |    8 -
 sysdeps/wordsize-64/glob64.c                       |    1 -
 42 files changed, 1103 insertions(+), 835 deletions(-)
 delete mode 100644 posix/bug-glob1.c
 create mode 100644 posix/flexmember.h
 create mode 100644 posix/glob_internal.h
 create mode 100644 posix/glob_pattern_p.c
 create mode 100644 posix/globfree.c
 create mode 100644 posix/globfree64.c
 create mode 100644 posix/tst-glob_symlinks.c
 create mode 100644 sysdeps/gnu/globfree64.c
 create mode 100644 sysdeps/unix/sysv/linux/alpha/globfree.c
 delete mode 100644 sysdeps/unix/sysv/linux/arm/glob64.c
 create mode 100644 sysdeps/unix/sysv/linux/glob.c
 create mode 100644 sysdeps/unix/sysv/linux/glob64.c
 create mode 100644 sysdeps/unix/sysv/linux/globfree.c
 create mode 100644 sysdeps/unix/sysv/linux/globfree64.c
 delete mode 100644 sysdeps/unix/sysv/linux/i386/glob64.c
 delete mode 100644 sysdeps/unix/sysv/linux/m68k/glob64.c
 delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/glob64.c
 rename sysdeps/unix/sysv/linux/{i386 => }/olddirent.h (100%)
 create mode 100644 sysdeps/unix/sysv/linux/oldglob.c
 delete mode 100644 sysdeps/unix/sysv/linux/powerpc/powerpc32/glob64.c
 create mode 100644 sysdeps/unix/sysv/linux/s390/s390-32/glob64.c
 delete mode 100644 sysdeps/unix/sysv/linux/sparc/sparc32/glob64.c
 delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/glob64.c
 delete mode 100644 sysdeps/unix/sysv/linux/x86_64/x32/glob.c
 delete mode 100644 sysdeps/wordsize-64/glob.c
 delete mode 100644 sysdeps/wordsize-64/glob64.c


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