compiler-rt/test/ubsan/TestCases/Misc/unreachable.cpp

   1 // RUN: %clang %S/Inputs/returns-unexpectedly.c -O3 -c -o %t.ru.o
   2 // RUN: %clangxx -fsanitize=unreachable -O3 -o %t %s %t.ru.o
   3 // RUN: not %run %t builtin 2>&1 | FileCheck %s -check-prefix=BUILTIN
   4 // RUN: not %run %t noreturn-callee-marked 2>&1 | FileCheck %s -check-prefix=NORETURN1
   5 // RUN: not %run %t noreturn-caller-marked 2>&1 | FileCheck %s -check-prefix=NORETURN2
   6
   7 #include <string.h>
   8
   9 void __attribute__((noreturn)) callee_marked_noreturn() {
  10   // NORETURN1: unreachable.cpp:[[@LINE+1]]:1: runtime error: execution reached an unreachable program point
  11 }
  12
  13 extern "C" void __attribute__((noreturn)) returns_unexpectedly();
  14
  15 int main(int, char **argv) {
  16   if (strcmp(argv[1], "builtin") == 0)
  17     // BUILTIN: unreachable.cpp:[[@LINE+1]]:5: runtime error: execution reached an unreachable program point
  18     __builtin_unreachable();
  19   else if (strcmp(argv[1], "noreturn-callee-marked") == 0)
  20     callee_marked_noreturn();
  21   else if (strcmp(argv[1], "noreturn-caller-marked") == 0)
  22     // NORETURN2: unreachable.cpp:[[@LINE+1]]:5: runtime error: execution reached an unreachable program point
  23     returns_unexpectedly();
  24   return 0;
  25 }