src/llvm/projects/compiler-rt/lib/asan/lit_tests/deep_stack_uaf.cc

   1 // Check that we can store lots of stack frames if asked to.
   2
   3 // RUN: %clangxx_asan -m64 -O0 %s -o %t 2>&1
   4 // RUN: ASAN_OPTIONS=malloc_context_size=120:redzone=512 %t 2>&1 | \
   5 // RUN: %symbolize | FileCheck %s
   6
   7 // RUN: %clangxx_asan -m32 -O0 %s -o %t 2>&1
   8 // RUN: ASAN_OPTIONS=malloc_context_size=120:redzone=512 %t 2>&1 | \
   9 // RUN: %symbolize | FileCheck %s
  10 #include <stdlib.h>
  11 #include <stdio.h>
  12
  13 template <int depth>
  14 struct DeepFree {
  15   static void free(char *x) {
  16     DeepFree<depth - 1>::free(x);
  17   }
  18 };
  19
  20 template<>
  21 struct DeepFree<0> {
  22   static void free(char *x) {
  23     ::free(x);
  24   }
  25 };
  26
  27 int main() {
  28   char *x = new char[10];
  29   // deep_free(x);
  30   DeepFree<200>::free(x);
  31   return x[5];
  32   // CHECK: {{.*ERROR: AddressSanitizer heap-use-after-free on address}}
  33   // CHECK: DeepFree<36>
  34   // CHECK: DeepFree<98>
  35   // CHECK: DeepFree<115>
  36 }