compiler-rt/test/asan/TestCases/uar_and_exceptions.cpp

   1 // Test that use-after-return works with exceptions.
   2 // RUN: %clangxx_asan -O0 %s -o %t
   3 // RUN: %env_asan_opts=detect_stack_use_after_return=1 %run %t
   4 // RUN: %clangxx_asan -O0 %s -o %t -fsanitize-address-use-after-return=always
   5 // RUN: %run %t
   6
   7 #include <stdio.h>
   8
   9 volatile char *g;
  10
  11 #ifndef FRAME_SIZE
  12 # define FRAME_SIZE 100
  13 #endif
  14
  15 #ifndef NUM_ITER
  16 # define NUM_ITER 4000
  17 #endif
  18
  19 #ifndef DO_THROW
  20 # define DO_THROW 1
  21 #endif
  22
  23 void Func(int depth) {
  24   char frame[FRAME_SIZE];
  25   g = &frame[0];
  26   if (depth)
  27     Func(depth - 1);
  28   else if (DO_THROW)
  29     throw 1;
  30 }
  31
  32 int main(int argc, char **argv) {
  33   for (int i = 0; i < NUM_ITER; i++) {
  34     try {
  35       Func(argc * 100);
  36     } catch(...) {
  37     }
  38     if ((i % (NUM_ITER / 10)) == 0)
  39       fprintf(stderr, "done [%d]\n", i);
  40   }
  41   return 0;
  42 }