1 | // RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t |
2 | // RUN: not %run %t 2>&1 | FileCheck %s |
3 | // |
4 | |
5 | #include <assert.h> |
6 | #include <stdint.h> |
7 | |
8 | struct A { |
9 | char a[3]; |
10 | int b[3]; |
11 | }; |
12 | |
13 | __attribute__((noinline)) void foo(int index, int len) { |
14 | volatile struct A str[len] __attribute__((aligned(32))); |
15 | assert(!(reinterpret_cast<uintptr_t>(str) & 31L)); |
16 | str[index].a[0] = '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 | int main(int argc, char **argv) { |
22 | foo(index: 10, len: 10); |
23 | return 0; |
24 | } |
25 | |