clang/test/CodeGenCXX/switch-case-folding-1.cpp

   1 // RUN: %clang_cc1 %s -emit-llvm-only
   2 // CHECK that we don't crash.
   3
   4 int test(int val){
   5         int x = 12;
   6         // Make sure we don't crash when constant folding the case 4
   7         // statement due to the case 5 statement contained in the do loop
   8         switch (val) {
   9                 case 4: do {
  10                      switch (6)  {
  11                        case 6: {
  12                          case 5: x++;
  13                        };
  14                      };
  15                 } while (x < 100);
  16         }
  17         return x;
  18 }
  19
  20 int main(void) {
  21   return test(4);
  22 }