28 lines
779 B
C
28 lines
779 B
C
/* PR middle-end/82063 - issues with arguments enabled by -Wall
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{ dg-do compile }
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{ dg-require-effective-target alloca }
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{ dg-options "-O2 -Walloca-larger-than=0 -Wvla-larger-than=0 -ftrack-macro-expansion=0" } */
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extern void* alloca (__SIZE_TYPE__);
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void sink (void*);
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#define T(x) sink (x)
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void test_alloca (void)
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{
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/* Verify that alloca(0) is diagnosed even if the limit is zero. */
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T (alloca (0)); /* { dg-warning "argument to .alloca. is zero" } */
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T (alloca (1)); /* { dg-warning "argument to .alloca. is too large" } */
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}
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void test_vla (unsigned n)
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{
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/* VLAs smaller than 32 bytes are optimized into ordinary arrays. */
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if (n < 1 || 99 < n)
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n = 1;
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char a[n]; /* { dg-warning "argument to variable-length array " } */
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T (a);
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}
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