gcc/testsuite/gcc.dg/pr112509.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fno-tree-vrp -fno-tree-fre -fno-tree-forwprop" } */
   3
   4 struct S {
   5   unsigned j : 3;
   6 };
   7 int k, l, m_1 = {0};
   8 void f(int l, struct S x) {
   9   unsigned int k_1;
  10   while (m_1 % 8) switch (x.j) {
  11     case 1:
  12     case 3:
  13     case 4:
  14     case 6:
  15     case 2:
  16     case 5: l = m_1;
  17     case 7:
  18     case 0: k_1 = 0;
  19     default: break;
  20     }
  21 }
  22 void foo(struct S x) { f(l, x); }