1 /* Spurious uninitialized variable warnings, case 1.
2    Taken from cppfiles.c (merge_include_chains) */
3 /* { dg-do compile } */
4 /* { dg-options "-Wuninitialized" } */
5 
6 struct list
7 {
8   struct list *next;
9   int id;
10 };
11 
12 extern void free (void *);
13 
remove_dupes(struct list * el)14 void remove_dupes (struct list *el)
15 {
16   struct list *p, *q, *r;  /* { dg-bogus "r" "uninitialized variable warning" } */
17 
18   for (p = el; p; p = p->next)
19   {
20     for (q = el; q != p; q = q->next)
21       if (q->id == p->id)
22       {
23 	r->next = p->next;
24 	free (p);
25 	p = r;
26 	break;
27       }
28     r = p;
29   }
30 }
31