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GNU C Library master sources branch master updated. glibc-2.26.9000-755-gec72135
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 14 Nov 2017 17:51:00 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.26.9000-755-gec72135
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=ec72135e5f1d061cb5cf7cd1b855fd6290be10d9
commit ec72135e5f1d061cb5cf7cd1b855fd6290be10d9
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Nov 14 17:50:36 2017 +0000
Fix string/bug-strncat1.c build with GCC 8.
GCC 8 warns about strncat calls with truncated output.
string/bug-strncat1.c tests such a call; this patch disables the
warning for it.
Tested (compilation) with GCC 8 for x86_64-linux-gnu with
build-many-glibcs.py (in conjunction with Martin's patch to allow
glibc to build).
* string/bug-strncat1.c: Include <libc-diag.h>.
(main): Disable -Wstringop-truncation for strncat call for GCC 8.
diff --git a/ChangeLog b/ChangeLog
index bc5ff14..579185d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2017-11-14 Joseph Myers <joseph@codesourcery.com>
+
+ * string/bug-strncat1.c: Include <libc-diag.h>.
+ (main): Disable -Wstringop-truncation for strncat call for GCC 8.
+
2017-11-13 Claude Paroz <claude@2xlibre.net>
[BZ #22387]
diff --git a/string/bug-strncat1.c b/string/bug-strncat1.c
index f1b5c37..b22beba 100644
--- a/string/bug-strncat1.c
+++ b/string/bug-strncat1.c
@@ -4,13 +4,21 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <libc-diag.h>
char d[3] = "\0\1\2";
int
main (void)
{
+ DIAG_PUSH_NEEDS_COMMENT;
+#if __GNUC_PREREQ (8, 0)
+ /* GCC 8 warns about strncat truncating output; this is deliberately
+ tested here. */
+ DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation");
+#endif
strncat (d, "\5\6", 1);
+ DIAG_POP_NEEDS_COMMENT;
if (d[0] != '\5')
{
puts ("d[0] != '\\5'");
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
string/bug-strncat1.c | 8 ++++++++
2 files changed, 13 insertions(+), 0 deletions(-)
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