| 1 | // RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t |
|---|---|
| 2 | // RUN: not %run %t 2>&1 | FileCheck %s |
| 3 | // |
| 4 | // REQUIRES: stable-runtime |
| 5 | // MSVC doesn't support VLAs |
| 6 | // UNSUPPORTED: msvc |
| 7 | |
| 8 | #include "defines.h" |
| 9 | #include <assert.h> |
| 10 | #include <stdint.h> |
| 11 | |
| 12 | ATTRIBUTE_NOINLINE void foo(int index, int len) { |
| 13 | if (index > len) { |
| 14 | char str[len]; |
| 15 | assert(!(reinterpret_cast<uintptr_t>(str) & 31L)); |
| 16 | str[index] = '1'; // BOOM |
| 17 | // CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] |
| 18 | // CHECK: WRITE of size 1 at [[ADDR]] thread T0 |
| 19 | } |
| 20 | } |
| 21 | |
| 22 | int main(int argc, char **argv) { |
| 23 | foo(index: 33, len: 10); |
| 24 | return 0; |
| 25 | } |
| 26 |