51 lines
652 B
C
51 lines
652 B
C
/* { dg-do run } */
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/* { dg-options "-O2" } */
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extern void abort (void);
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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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static int __attribute__((noinline))
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foo (void)
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{
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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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struct node *next = n->next;
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if (n->prev == (void *)h)
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h->first = next;
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else
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n->prev->next = next;
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n->next = h->first;
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return n->next == &node;
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}
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int
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main (void)
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{
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if (foo ())
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abort ();
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return 0;
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}
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