20 lines
359 B
C
20 lines
359 B
C
/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-tailc-details" } */
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extern void *alloca (__SIZE_TYPE__);
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int q(int a);
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int *v;
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int
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t(int a)
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{
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int r,r1;
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if (a)
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r1=r = q(a-1);
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else
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return 0;
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/* Dead alloca should not disturb us. */
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if (r!=r1)
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v=alloca(r);
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return r;
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}
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/* { dg-final { scan-tree-dump-times "Found tail call" 1 "tailc"} } */
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