1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-optimized" } */
       3  
       4  void*f(){
       5      char*p=__builtin_malloc(42);
       6      __builtin_memset(p,0,42);
       7      __builtin_memset(p,0,42);
       8      return p;
       9  };
      10  
      11  /* { dg-final { scan-tree-dump-not "malloc" "optimized" } } */
      12  /* { dg-final { scan-tree-dump-times "calloc" 1 "optimized" } } */
      13  /* { dg-final { scan-tree-dump-not "memset" "optimized" } } */