1 /* { dg-do compile } */
2 /* { dg-options "-O1 -fdump-tree-alias-vops" } */
3 extern void abort (void);
4 int a;
5
6 extern void __attribute__ ((malloc)) *foo ();
7
bar(void)8 void bar (void)
9 {
10 a = 1;
11 foo ();
12 if (a)
13 abort ();
14 }
15
16 /* We used to treat malloc functions like pure and const functions, but
17 malloc functions may clobber global memory. Only the function result
18 does not alias any other pointer.
19 Hence, we must have a VDEF for a before and after the call to foo().
20 And one after the call to abort(). */
21 /* { dg-final { scan-tree-dump-times "VDEF" 3 "alias"} } */
22