gcc/testsuite/gcc.dg/pr29801.c

   1 /* We used to crash in ccp here, because the initial constant value of 2
   2    was changed to 5.  */
   3
   4 /* { dg-do compile } */
   5 /* { dg-options "-O2 -fdump-tree-optimized" } */
   6
   7 static const int a = 2;
   8
   9 int test (int param)
  10 {
  11   int *p = (int *) &a;
  12
  13   if (param)
  14     *p = 5;
  15
  16   return a;
  17 }
  18
  19 /* Check that we return the correct (unchanged) value.  */
  20
  21 /* { dg-final { scan-tree-dump-times "return 2" 1 "optimized" } } */
  22 /* { dg-final { scan-tree-dump-times "return 5" 0 "optimized" } } */
  23
  24 /* { dg-final { cleanup-tree-dump "optimized" } } */