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authorH.J. Lu <hjl.tools@gmail.com>2017-10-15 08:16:26 -0700
committerH.J. Lu <hjl.tools@gmail.com>2017-10-15 08:16:37 -0700
commit8e57c9432a2b68c8a1e7f4df28f0e8c7acc04753 (patch)
tree6dd8b1f6f37eba37693ca86d946db379394619a5 /inet/getprtname.c
parenta4777c46af89649f2282c1703e8117ccd058d719 (diff)
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Silence -O3 -Wall warning in malloc/hooks.c with GCC 7 [BZ #22052]
realloc_check has unsigned char *magic_p; ... __libc_lock_lock (main_arena.mutex); const mchunkptr oldp = mem2chunk_check (oldmem, &magic_p); __libc_lock_unlock (main_arena.mutex); if (!oldp) malloc_printerr ("realloc(): invalid pointer"); ... if (newmem == NULL) *magic_p ^= 0xFF; with static void malloc_printerr(const char *str) __attribute__ ((noreturn)); GCC 7 -O3 warns hooks.c: In function ‘realloc_check’: hooks.c:352:14: error: ‘magic_p’ may be used uninitialized in this function [-Werror=maybe-uninitialized] *magic_p ^= 0xFF; due to the GCC bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82090 This patch silences GCC 7 by using DIAG_IGNORE_NEEDS_COMMENT. [BZ #22052] * malloc/hooks.c (realloc_check): Use DIAG_IGNORE_NEEDS_COMMENT to silence -O3 -Wall warning with GCC 7.
Diffstat (limited to 'inet/getprtname.c')
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