1 // RUN: %clang_cl_asan -O0 %s -Fe%t
2 // RUN: not %run %t 2>&1 | FileCheck %s
3
4 #include <windows.h>
5
main()6 int main() {
7 char *buffer = new char;
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: {{#0 .* main .*operator_new_left_oob.cc}}:[[@LINE-3]]
12 // CHECK: [[ADDR]] is located 1 bytes to the left of 1-byte region
13 // CHECK: allocated by thread T0 here:
14 // CHECK: {{#0 .* operator new }}
15 // CHECK: {{#1 .* main .*operator_new_left_oob.cc}}:[[@LINE-8]]
16 delete buffer;
17 }
18