test/asan/TestCases/deep_call_stack.cc

   1 // Check that UAR mode can handle very deep recusrion.
   2 // export ASAN_OPTIONS=detect_stack_use_after_return=1
   3 // RUN: %clangxx_asan -O2 %s -o %t && \
   4 // RUN:   %t 2>&1 | FileCheck %s
   5 // Also check that use_sigaltstack+verbosity doesn't crash.
   6 // RUN: ASAN_OPTIONS=verbosity=1:use_sigaltstack=1 %t  | FileCheck %s
   7 #include <stdio.h>
   8
   9 __attribute__((noinline))
  10 void RecursiveFunc(int depth, int *ptr) {
  11   if ((depth % 1000) == 0)
  12     printf("[%05d] ptr: %p\n", depth, ptr);
  13   if (depth == 0)
  14     return;
  15   int local;
  16   RecursiveFunc(depth - 1, &local);
  17 }
  18
  19 int main(int argc, char **argv) {
  20   RecursiveFunc(40000, 0);
  21   return 0;
  22 }
  23 // CHECK: [40000] ptr:
  24 // CHECK: [20000] ptr:
  25 // CHECK: [00000] ptr