1// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
2// RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
3// RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
4// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
5// RUN: %env_asan_opts=print_stats=1 not %run %t 2>&1 | FileCheck %s
6
7// FIXME: Fix this test under GCC.
8// REQUIRES: Clang
9
10#include <stdlib.h>
11#include <string.h>
12int main(int argc, char **argv) {
13 char *x = (char*)malloc(size: 10 * sizeof(char));
14 memset(s: x, c: 0, n: 10);
15 int res = x[argc * 10]; // BOOOM
16 // CHECK: {{READ of size 1 at 0x.* thread T0}}
17 // CHECK: {{ #0 0x.* in main .*heap-overflow.cpp:}}[[@LINE-2]]
18 // CHECK: {{0x.* is located 0 bytes after 10-byte region}}
19 // CHECK: {{allocated by thread T0 here:}}
20
21 // CHECK: {{ #0 0x.* in .*malloc}}
22 free(ptr: x);
23 return res;
24}
25

source code of compiler-rt/test/asan/TestCases/heap-overflow.cpp