src/libcompiler_builtins/compiler-rt/test/asan/TestCases/Windows/dll_stack_use_after_return.cc

   1 // RUN: %clang_cl_asan -O0 %p/dll_host.cc -Fe%t
   2 // RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll
   3 // RUN: %env_asan_opts=detect_stack_use_after_return=1 not %run %t %t.dll 2>&1 | FileCheck %s
   4
   5 #include <malloc.h>
   6
   7 char *x;
   8
   9 void foo() {
  10   char stack_buffer[42];
  11   x = &stack_buffer[13];
  12 }
  13
  14 extern "C" __declspec(dllexport)
  15 int test_function() {
  16   foo();
  17   *x = 42;
  18 // CHECK: AddressSanitizer: stack-use-after-return
  19 // CHECK: WRITE of size 1 at [[ADDR:.*]] thread T0
  20 // CHECK-NEXT:  test_function{{.*}}dll_stack_use_after_return.cc:[[@LINE-3]]
  21 // CHECK-NEXT:  main
  22 //
  23 // CHECK: Address [[ADDR]] is located in stack of thread T0 at offset [[OFFSET:.*]] in frame
  24 // CHECK-NEXT: #0 {{.*}} foo{{.*}}dll_stack_use_after_return.cc
  25 // CHECK: 'stack_buffer'{{.*}} <== Memory access at offset [[OFFSET]] is inside this variable
  26   return 0;
  27 }
  28