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3c9378265a
This patch fixes the glibc testsuite build for GCC 7 -Wformat-truncation, newly moved out of -Wformat-length and with some further warnings that didn't previously appear. Two tests that previously disabled -Wformat-length are changed to disable -Wformat-truncation instead; two others are made to disable that option as well. Tested (compilation only) with build-many-glibcs.py for aarch64 with GCC mainline. * stdio-common/tst-printf.c [__GNUC_PREREQ (7, 0)]: Ignore -Wformat-truncation instead of -Wformat-length. * time/tst-strptime2.c (mkbuf) [__GNUC_PREREQ (7, 0)]: Likewise. * stdio-common/tstdiomisc.c (F): Ignore -Wformat-truncation for GCC 7. * wcsmbs/tst-wcstof.c: Include <libc-internal.h>. (do_test): Ignore -Wformat-truncation for GCC 7.
35 lines
794 B
C
35 lines
794 B
C
#define _GNU_SOURCE 1
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#include <wchar.h>
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#include <stdio.h>
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#include <string.h>
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#include <wctype.h>
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#include <libc-internal.h>
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static int
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do_test (void)
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{
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int result = 0;
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char buf[100];
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wchar_t tmp[3];
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tmp[0] = '8';
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tmp[1] = '1';
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tmp[2] = 0;
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/* GCC does not know the result of wcstof so cannot see that the
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snprintf output is not truncated. */
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DIAG_PUSH_NEEDS_COMMENT;
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#if __GNUC_PREREQ (7, 0)
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DIAG_IGNORE_NEEDS_COMMENT (7.0, "-Wformat-truncation");
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#endif
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snprintf (buf, 100, "%S = %f", tmp, wcstof (tmp, NULL));
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DIAG_POP_NEEDS_COMMENT;
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printf ("\"%s\" -> %s\n", buf,
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strcmp (buf, "81 = 81.000000") == 0 ? "okay" : "buggy");
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result |= strcmp (buf, "81 = 81.000000") != 0;
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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