1 // Test that use-after-return works with exceptions.
2 // export ASAN_OPTIONS=detect_stack_use_after_return=1
3 // RUN: %clangxx_asan  -O0 %s -o %t && %run %t
4 
5 // Clang doesn't support exceptions on Windows yet.
6 // XFAIL: win32
7 
8 #include <stdio.h>
9 
10 volatile char *g;
11 
12 #ifndef FRAME_SIZE
13 # define FRAME_SIZE 100
14 #endif
15 
16 #ifndef NUM_ITER
17 # define NUM_ITER 4000
18 #endif
19 
20 #ifndef DO_THROW
21 # define DO_THROW 1
22 #endif
23 
Func(int depth)24 void Func(int depth) {
25   char frame[FRAME_SIZE];
26   g = &frame[0];
27   if (depth)
28     Func(depth - 1);
29   else if (DO_THROW)
30     throw 1;
31 }
32 
main(int argc,char ** argv)33 int main(int argc, char **argv) {
34   for (int i = 0; i < NUM_ITER; i++) {
35     try {
36       Func(argc * 100);
37     } catch(...) {
38     }
39     if ((i % (NUM_ITER / 10)) == 0)
40       fprintf(stderr, "done [%d]\n", i);
41   }
42   return 0;
43 }
44