48 lines
641 B
C
48 lines
641 B
C
/* { dg-do run } */
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/* { dg-options "-O2 -ftree-tail-merge" } */
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struct node
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{
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struct node *next;
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struct node *prev;
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};
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struct node node;
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struct head
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{
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struct node *first;
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};
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struct head heads[5];
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int k = 2;
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struct head *head = &heads[2];
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int
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main ()
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{
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struct node *p;
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node.next = (void*)0;
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node.prev = (void *)head;
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head->first = &node;
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struct node *n = head->first;
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struct head *h = &heads[k];
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heads[2].first = n->next;
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if ((void*)n->prev == (void *)h)
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p = h->first;
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else
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/* Dead tbaa-unsafe load from ((struct node *)&heads[2])->next. */
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p = n->prev->next;
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return !(p == (void*)0);
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}
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