42 lines
968 B
C
42 lines
968 B
C
/* PR c/84919 - bogus -Wrestrict on sprintf %p with destination as argument
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{ dg-do compile }
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-O2 isn't strictly necessary but setting also verifies that the sprintf/
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strlen pass doesn't warn with non-constant arguments.
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{ dg-options "-O2 -Wall" } */
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extern int sprintf (char* restrict, const char* restrict, ...);
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extern int snprintf (char* restrict, __SIZE_TYPE__, const char* restrict, ...);
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char a[32];
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void test_warn (char *p)
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{
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a[0] = 0;
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sprintf (a, "a=%s", a); /* { dg-warning "-Wrestrict" } */
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p = a;
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char *q = p + 3;
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sprintf (p, "a=%s", q); /* { dg-warning "-Wrestrict" } */
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}
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void test_nowarn_front_end (char *d)
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{
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sprintf (d, "%p", d);
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snprintf (d, 32, "%p", d);
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sprintf (a, "p=%p", a);
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snprintf (a, sizeof a, "%p", a);
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}
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void test_nowarn_sprintf_pass (char *d)
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{
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char *q = d;
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sprintf (d, "p=%p", q);
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snprintf (d, 32, "p=%p", q);
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q = a;
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sprintf (a, "a=%p", q);
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snprintf (a, sizeof a, "a=%p", q);
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}
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