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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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cf00e0e59d
glibc 2.28 added an avx2 optimized variant of wstrncmp which memcheck cannot proof correct. Add a simple override in vg_replace_strmem.c.
33 lines
856 B
C
33 lines
856 B
C
// Uses various wchar_t * functions that have hand written SSE and/or AVX2
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// assembly implementations in glibc.
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// wcslen, wcscpy, wcscmp, wcsncmp, wcsrchr, wcschr.
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#include <stdio.h>
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#include <stdlib.h>
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#include <wchar.h>
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int main(int argc, char **argv)
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{
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wchar_t a[] = L"The spazzy orange tiger jumped over the tawny jaguar.";
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wchar_t *b, *c;
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wchar_t *d, *e;
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size_t l = wcslen (a);
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fprintf (stderr, "wcslen: %zd\n", l); // wcslen: 53
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b = (wchar_t *) malloc((l + 1) * sizeof (wchar_t));
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c = wcscpy (b, a);
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fprintf (stderr, "wcscmp equal: %d\n", wcscmp (a, b)); // wcscmp equal: 0
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fprintf (stderr,
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"wcsncmp equal: %d\n", wcsncmp (a, b, l)); // wcsncmp equal: 0
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d = wcsrchr (a, L'd');
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e = wcschr (a, L'd');
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fprintf (stderr, "wcsrchr == wcschr: %d\n", d == e); // wcsrchr == wcschr: 1
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free (c); // b == c
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return 0;
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}
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