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GNU C Library master sources branch master updated. glibc-2.28.9000-91-g6c3a8a9
- From: ppluzhnikov at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 25 Aug 2018 01:09:31 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.28.9000-91-g6c3a8a9
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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=6c3a8a9d868a8deddf0d6dcc785b6d120de90523
commit 6c3a8a9d868a8deddf0d6dcc785b6d120de90523
Author: Paul Pluzhnikov <ppluzhnikov@kazbek.mtv.corp.google.com>
Date: Fri Aug 24 18:08:51 2018 -0700
Fix BZ#23400 (creating temporary files in source tree), and undefined behavior in test.
diff --git a/ChangeLog b/ChangeLog
index 09d5e3b..4925551 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2018-08-24 Paul Pluzhnikov <ppluzhnikov@google.com>
+
+ [BZ #23400]
+ * stdlib/test-bz22786.c (do_test): Fix undefined behavior, don't
+ create temporary files in source tree.
+
2018-08-24 Joseph Myers <joseph@codesourcery.com>
* sysdeps/generic/math-tests-trap.h: New file.
diff --git a/stdlib/test-bz22786.c b/stdlib/test-bz22786.c
index e7837f9..d1aa691 100644
--- a/stdlib/test-bz22786.c
+++ b/stdlib/test-bz22786.c
@@ -26,28 +26,20 @@
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
+#include <support/check.h>
+#include <support/support.h>
+#include <support/temp_file.h>
#include <support/test-driver.h>
#include <libc-diag.h>
static int
do_test (void)
{
- const char dir[] = "bz22786";
- const char lnk[] = "bz22786/symlink";
+ const char *dir = support_create_temp_directory ("bz22786.");
+ const char *lnk = xasprintf ("%s/symlink", dir);
+ const size_t path_len = (size_t) INT_MAX + strlen (lnk) + 1;
- rmdir (dir);
- if (mkdir (dir, 0755) != 0 && errno != EEXIST)
- {
- printf ("mkdir %s: %m\n", dir);
- return EXIT_FAILURE;
- }
- if (symlink (".", lnk) != 0 && errno != EEXIST)
- {
- printf ("symlink (%s, %s): %m\n", dir, lnk);
- return EXIT_FAILURE;
- }
-
- const size_t path_len = (size_t) INT_MAX + 1;
+ TEST_VERIFY_EXIT (symlink (".", lnk) == 0);
DIAG_PUSH_NEEDS_COMMENT;
#if __GNUC_PREREQ (7, 0)
@@ -55,20 +47,14 @@ do_test (void)
allocation to succeed for the test to work. */
DIAG_IGNORE_NEEDS_COMMENT (7, "-Walloc-size-larger-than=");
#endif
- char *path = malloc (path_len);
+ char *path = xmalloc (path_len);
DIAG_POP_NEEDS_COMMENT;
- if (path == NULL)
- {
- printf ("malloc (%zu): %m\n", path_len);
- return EXIT_UNSUPPORTED;
- }
-
- /* Construct very long path = "bz22786/symlink/aaaa....." */
- char *p = mempcpy (path, lnk, sizeof (lnk) - 1);
+ /* Construct very long path = "/tmp/bz22786.XXXX/symlink/aaaa....." */
+ char *p = mempcpy (path, lnk, strlen (lnk));
*(p++) = '/';
- memset (p, 'a', path_len - (path - p) - 2);
- p[path_len - (path - p) - 1] = '\0';
+ memset (p, 'a', path_len - (p - path) - 2);
+ p[path_len - (p - path) - 1] = '\0';
/* This call crashes before the fix for bz22786 on 32-bit platforms. */
p = realpath (path, NULL);
@@ -81,7 +67,6 @@ do_test (void)
/* Cleanup. */
unlink (lnk);
- rmdir (dir);
return 0;
}
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
stdlib/test-bz22786.c | 39 ++++++++++++---------------------------
2 files changed, 18 insertions(+), 27 deletions(-)
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