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_OPTIONS=detect_stack_use_after_return=1 not %run %t %t.dll 2>&1 | FileCheck %s
4
5#include <malloc.h>
6
7char *x;
8
9void foo() {
10  char stack_buffer[42];
11  x = &stack_buffer[13];
12}
13
14extern "C" __declspec(dllexport)
15int 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
29