41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
/* PR tree-optimization/89772
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Verify that memchr calls with a pointer to a constant character
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are folded as expected.
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{ dg-do compile }
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{ dg-options "-O1 -Wall -fdump-tree-release_ssa" } */
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typedef __SIZE_TYPE__ size_t;
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typedef __WCHAR_TYPE__ wchar_t;
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extern void* memchr (const void*, int, size_t);
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extern int printf (const char*, ...);
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extern void abort (void);
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#define A(expr) \
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((expr) \
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? (void)0 \
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: (printf ("assertion failed on line %i: %s\n", \
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__LINE__, #expr), \
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abort ()))
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const char a[8] = {'a',0,'b'};
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const char b[3] = {'a','b'};
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const char c[8] = {'a','b','c'};
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void test_memchr_cst_char (void)
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{
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A (!memchr (a, 'c', 2));
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A (!memchr (a, 'c', 5));
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A (!memchr (a, 'c', sizeof a));
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A (&a[1] == memchr (a, 0, sizeof a));
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A (!memchr (b, 0, 2));
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A (&b[2] == memchr (b, 0, sizeof b));
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A (!memchr (c, 0, 2));
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A (&c[3] == memchr (c, 0, 4));
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A (&c[3] == memchr (c, 0, sizeof a));
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}
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/* { dg-final { scan-tree-dump-not "abort" "release_ssa" } } */
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