1// Test strict_str`ing_checks option in strspn function
2// RUN: %clang_asan %s -o %t && %run %t 2>&1
3// RUN: %env_asan_opts=strict_string_checks=false %run %t 2>&1
4// RUN: %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
5
6#include <assert.h>
7#include <stdlib.h>
8#include <string.h>
9
10int main(int argc, char **argv) {
11 size_t size = 100;
12 char fill = 'o';
13 char *s1 = (char*)malloc(size: size);
14 char *s2 = (char*)malloc(size: 2);
15 memset(s: s1, c: fill, n: size);
16 s1[0] = s2[0] = 'z';
17 s2[1] = '\0';
18 size_t r = strspn(s: s1, accept: s2);
19 // CHECK: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
20 // CHECK: READ of size 101
21 assert(r == 1);
22 free(ptr: s1);
23 free(ptr: s2);
24 return 0;
25}
26

source code of compiler-rt/test/asan/TestCases/strspn_strict.c