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GNU C Library master sources branch, master, updated. glibc-2.12-212-g69da074
- From: drepper at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 10 Nov 2010 07:38:54 -0000
- Subject: GNU C Library master sources branch, master, updated. glibc-2.12-212-g69da074
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- Log -----------------------------------------------------------------
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=69da074d7adfab7b57004a0dea9403a928e310a5
commit 69da074d7adfab7b57004a0dea9403a928e310a5
Author: Ulrich Drepper <drepper@gmail.com>
Date: Wed Nov 10 02:38:35 2010 -0500
Fix warnings in __bswap_16.
diff --git a/ChangeLog b/ChangeLog
index 005266c..d40db12 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2010-11-08 Ulrich Drepper <drepper@gmail.com>
+
+ [BZ #12194]
+ * sysdeps/i386/bits/byteswap.h: Avoid warning in __bswap_16.
+ * sysdeps/x86_64/bits/byteswap.h: Likewise.
+
2010-11-07 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/memset.S: Check USE_MULTIARCH and USE_SSE2 for
diff --git a/NEWS b/NEWS
index cbe6e51..d4d5b73 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,4 @@
-GNU C Library NEWS -- history of user-visible changes. 2010-11-5
+GNU C Library NEWS -- history of user-visible changes. 2010-11-8
Copyright (C) 1992-2009, 2010 Free Software Foundation, Inc.
See the end for copying conditions.
@@ -11,7 +11,7 @@ Version 2.13
3268, 7066, 10851, 11611, 11640, 11701, 11840, 11856, 11883, 11903, 11904,
11968, 11979, 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108,
- 12113, 12140, 12159, 12167, 12191
+ 12113, 12140, 12159, 12167, 12191, 12194
* New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
diff --git a/sysdeps/i386/bits/byteswap.h b/sysdeps/i386/bits/byteswap.h
index 1f3fc5e..c246ae8 100644
--- a/sysdeps/i386/bits/byteswap.h
+++ b/sysdeps/i386/bits/byteswap.h
@@ -1,5 +1,5 @@
/* Macros to swap the order of bytes in integer values.
- Copyright (C) 1997, 1998, 2000, 2002, 2003, 2006, 2007, 2008
+ Copyright (C) 1997, 1998, 2000, 2002, 2003, 2006, 2007, 2008, 2010
Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -27,26 +27,27 @@
/* Swap bytes in 16 bit value. */
#define __bswap_constant_16(x) \
- ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
+ ((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
#ifdef __GNUC__
# if __GNUC__ >= 2
# define __bswap_16(x) \
(__extension__ \
- ({ register unsigned short int __v, __x = (x); \
+ ({ register unsigned short int __v, __x = (unsigned short int) (x); \
if (__builtin_constant_p (__x)) \
__v = __bswap_constant_16 (__x); \
else \
__asm__ ("rorw $8, %w0" \
: "=r" (__v) \
- : "0" (__x) \
- : "cc"); \
+ : "0" (__x) \
+ : "cc"); \
__v; }))
# else
/* This is better than nothing. */
# define __bswap_16(x) \
(__extension__ \
- ({ register unsigned short int __x = (x); __bswap_constant_16 (__x); }))
+ ({ register unsigned short int __x = (unsigned short int) (x); \
+ __bswap_constant_16 (__x); }))
# endif
#else
static __inline unsigned short int
@@ -122,7 +123,7 @@ __bswap_32 (unsigned int __bsx)
(__extension__ \
({ union { __extension__ unsigned long long int __ll; \
unsigned long int __l[2]; } __w, __r; \
- if (__builtin_constant_p (x)) \
+ if (__builtin_constant_p (x)) \
__r.__ll = __bswap_constant_64 (x); \
else \
{ \
diff --git a/sysdeps/x86_64/bits/byteswap.h b/sysdeps/x86_64/bits/byteswap.h
index 08b38e8..e350fb8 100644
--- a/sysdeps/x86_64/bits/byteswap.h
+++ b/sysdeps/x86_64/bits/byteswap.h
@@ -1,5 +1,5 @@
/* Macros to swap the order of bytes in integer values.
- Copyright (C) 1997, 1998, 2000, 2002, 2003, 2007, 2008
+ Copyright (C) 1997, 1998, 2000, 2002, 2003, 2007, 2008, 2010
Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -29,12 +29,12 @@
/* Swap bytes in 16 bit value. */
#define __bswap_constant_16(x) \
- ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
+ ((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
#if defined __GNUC__ && __GNUC__ >= 2
# define __bswap_16(x) \
(__extension__ \
- ({ register unsigned short int __v, __x = (x); \
+ ({ register unsigned short int __v, __x = (unsigned short int) (x); \
if (__builtin_constant_p (__x)) \
__v = __bswap_constant_16 (__x); \
else \
@@ -47,7 +47,8 @@
/* This is better than nothing. */
# define __bswap_16(x) \
(__extension__ \
- ({ register unsigned short int __x = (x); __bswap_constant_16 (__x); }))
+ ({ register unsigned short int __x = (unsigned short int) (x); \
+ __bswap_constant_16 (__x); }))
#endif
@@ -120,16 +121,16 @@
# define __bswap_64(x) \
(__extension__ \
({ union { __extension__ unsigned long long int __ll; \
- unsigned int __l[2]; } __w, __r; \
- if (__builtin_constant_p (x)) \
- __r.__ll = __bswap_constant_64 (x); \
- else \
- { \
- __w.__ll = (x); \
- __r.__l[0] = __bswap_32 (__w.__l[1]); \
- __r.__l[1] = __bswap_32 (__w.__l[0]); \
- } \
- __r.__ll; }))
+ unsigned int __l[2]; } __w, __r; \
+ if (__builtin_constant_p (x)) \
+ __r.__ll = __bswap_constant_64 (x); \
+ else \
+ { \
+ __w.__ll = (x); \
+ __r.__l[0] = __bswap_32 (__w.__l[1]); \
+ __r.__l[1] = __bswap_32 (__w.__l[0]); \
+ } \
+ __r.__ll; }))
# endif
#endif
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
NEWS | 4 ++--
sysdeps/i386/bits/byteswap.h | 15 ++++++++-------
sysdeps/x86_64/bits/byteswap.h | 29 +++++++++++++++--------------
4 files changed, 31 insertions(+), 23 deletions(-)
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