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
5extern "C" __declspec(dllexport)
6int test_function() {
7  char *buffer = new char[42];
8  buffer[-1] = 42;
9// CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
10// CHECK: WRITE of size 1 at [[ADDR]] thread T0
11// CHECK-NEXT: test_function {{.*}}dll_operator_array_new_left_oob.cc:[[@LINE-3]]
12// CHECK-NEXT: main {{.*}}dll_host.cc
13//
14// CHECK: [[ADDR]] is located 1 bytes to the left of 42-byte region
15// CHECK-LABEL: allocated by thread T0 here:
16// FIXME: should get rid of the malloc/free frames called from the inside of
17// operator new/delete in DLLs.  Also, the operator new frame should have [].
18// CHECK-NEXT:   malloc
19// CHECK-NEXT:   operator new
20// CHECK-NEXT:   test_function {{.*}}dll_operator_array_new_left_oob.cc:[[@LINE-13]]
21// CHECK-NEXT:   main {{.*}}dll_host.cc
22// CHECK-LABEL: SUMMARY
23  delete [] buffer;
24  return 0;
25}
26