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/* { dg-do compile } */
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/* { dg-options "-O2" } */
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/* { dg-final { scan-assembler "dont_delete" } } */
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typedef struct { int x; } __attribute__((may_alias)) S;
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extern void dont_delete (void);
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void f(S *s, float *f)
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{
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s->x = 1;
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*f = 0;
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if (s->x != 1)
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dont_delete ();
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}
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