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string: Fix tester build with fortify enable with gcc < 12

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When building with fortify enabled, GCC < 12 issues a warning on the
fortify strncat wrapper might overflow the destination buffer (the
failure is tied to -Werror).

Checked on ppc64 and x86_64.
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Mahesh Bodapati 2023-08-11 10:38:25 -05:00 • committed by Rajalakshmi Srinivasaraghavan
parent f5f96b784b
commit f1c7ed0859
1 changed files with 8 additions and 3 deletions
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11
string/tester.c
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@ -34,6 +34,14 @@
DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation");
#endif
/* When building with fortify enabled, GCC < 12 issues a warning on the
fortify strncat wrapper might overflow the destination buffer (the
failure is tied to -Werror).
Triggered by strncat fortify wrapper when it is enabled. */
#if __GNUC_PREREQ (11, 0)
DIAG_IGNORE_NEEDS_COMMENT (11, "-Wstringop-overread");
#endif
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
@ -52,9 +60,6 @@ DIAG_IGNORE_NEEDS_COMMENT (5.0, "-Wmemset-transposed-args");
DIAG_IGNORE_NEEDS_COMMENT (9, "-Wrestrict");
DIAG_IGNORE_NEEDS_COMMENT (7, "-Wstringop-overflow=");
#endif
#if __GNUC_PREREQ (11, 0)
DIAG_IGNORE_NEEDS_COMMENT (11, "-Wstringop-overread");
#endif
#define STREQ(a, b) (strcmp((a), (b)) == 0)