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: not %run %t %t.dll 2>&1 | FileCheck %s
4
5#include <stdio.h>
6#include <string.h>
7
8extern "C" __declspec(dllexport)
9int test_function() {
10  char str[] = "Hello!";
11  if (6 != strlen(str))
12    return 1;
13  printf("Initial test OK\n");
14  fflush(0);
15// CHECK: Initial test OK
16
17  str[6] = '!';  // Removes '\0' at the end!
18  int len = strlen(str);
19// CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
20// FIXME: Should be READ of size 1, see issue 155.
21// CHECK: READ of size {{[0-9]+}} at [[ADDR]] thread T0
22// CHECK-NEXT: {{#0 .*}}strlen
23// CHECK-NEXT: {{#1 .* test_function .*}}dll_intercept_strlen.cc:[[@LINE-5]]
24//
25// CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame
26// CHECK-NEXT: test_function {{.*}}dll_intercept_strlen.cc:
27  return len > 42;
28}
29