gcc/testsuite/gcc.dg/tree-ssa/pr24689.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -fdump-tree-optimized" } */
   3
   4 extern void bar (unsigned int);
   5
   6 int
   7 foo (void)
   8 {
   9   char buf[1] = { 3 };
  10   const char *p = buf;
  11   const char **q = &p;
  12   unsigned int ch;
  13   switch (**q)
  14     {
  15     case 1:  ch = 5; break;
  16     default: ch = 0; break;
  17     }
  18
  19   bar (ch);
  20   return ch;
  21 }
  22
  23 /* { dg-final { scan-tree-dump "return 0;" "optimized" } } */