1// RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t
2// RUN: %clangxx_asan -O3 -mllvm -asan-instrument-dynamic-allocas %s -o %t
3// RUN: %run %t 2>&1
4//
5
6#include "sanitizer/asan_interface.h"
7#include <assert.h>
8#include <stdint.h>
9
10__attribute__((noinline)) void foo(int index, int len) {
11 volatile char str[len] __attribute__((aligned(32)));
12 assert(!(reinterpret_cast<uintptr_t>(str) & 31L));
13 char *q = (char *)__asan_region_is_poisoned(beg: (char *)str, size: 64);
14 assert(q && ((q - str) == index));
15}
16
17int main(int argc, char **argv) {
18 for (int i = 1; i < 33; ++i)
19 foo(index: i, len: i);
20
21 for (int i = 1; i < 33; ++i)
22 foo(index: i, len: i);
23
24 return 0;
25}
26

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