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| author | Joseph Myers <joseph@codesourcery.com> | 2017-11-14 17:50:36 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2017-11-14 17:50:36 +0000 |
| commit | ec72135e5f1d061cb5cf7cd1b855fd6290be10d9 (patch) | |
| tree | 11ddb5b9320af6b9b3d3361449db2f0d3e776f00 | |
| parent | a259f5d388d6195da958b2d147d17c2e2d16b857 (diff) | |
| download | glibc-ec72135e5f1d061cb5cf7cd1b855fd6290be10d9.zip glibc-ec72135e5f1d061cb5cf7cd1b855fd6290be10d9.tar.gz glibc-ec72135e5f1d061cb5cf7cd1b855fd6290be10d9.tar.bz2 | |
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.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | string/bug-strncat1.c | 8 |
2 files changed, 13 insertions, 0 deletions
@@ -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'"); |