18 lines · cpp
1// RUN: %clang_cl_asan %Od %s %Fe%t2// RUN: not %run %t 2>&1 | FileCheck %s3 4#include <malloc.h>5 6int main() {7 char *buffer = (char*)malloc(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 T011 // CHECK-NEXT: {{#0 .* main .*malloc_left_oob.cpp}}:[[@LINE-3]]12 // CHECK: [[ADDR]] is located 1 bytes before 42-byte region13 // CHECK: allocated by thread T0 here:14 // CHECK-NEXT: {{#0 .* malloc }}15 // CHECK: {{ #[1-3] .* main .*malloc_left_oob.cpp}}:[[@LINE-8]]16 free(buffer);17}18