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6ae2ca620a
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.
(cherry picked from commit ec72135e5f)
40 lines
747 B
C
40 lines
747 B
C
/* Test case by Joseph S. Myers <jsm28@cam.ac.uk>. */
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#undef __USE_STRING_INLINES
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#define __USE_STRING_INLINES
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libc-diag.h>
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char d[3] = "\0\1\2";
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int
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main (void)
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{
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DIAG_PUSH_NEEDS_COMMENT;
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#if __GNUC_PREREQ (8, 0)
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/* GCC 8 warns about strncat truncating output; this is deliberately
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tested here. */
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DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation");
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#endif
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strncat (d, "\5\6", 1);
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DIAG_POP_NEEDS_COMMENT;
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if (d[0] != '\5')
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{
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puts ("d[0] != '\\5'");
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exit (1);
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}
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if (d[1] != '\0')
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{
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puts ("d[1] != '\\0'");
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exit (1);
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}
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if (d[2] != '\2')
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{
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puts ("d[2] != '\\2'");
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exit (1);
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}
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return 0;
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}
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