forked from OSchip/llvm-project
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
|
||
|
|
// Test whether calling certain libFuzzer's interceptors inside allocators
|
||
|
|
// does not cause an assertion failure.
|
||
|
|
#include <assert.h>
|
||
|
|
#include <cstddef>
|
||
|
|
#include <cstdint>
|
||
|
|
#include <cstdlib>
|
||
|
|
#include <cstring>
|
||
|
|
#include <iostream>
|
||
|
|
#include <malloc.h>
|
||
|
|
|
||
|
|
static const char *buf1 = "aaaa";
|
||
|
|
static const char *buf2 = "bbbb";
|
||
|
|
|
||
|
|
static void callFuzzerInterceptors(const char *prefix) {
|
||
|
|
int memcmp_result = memcmp(buf1, buf2, 4);
|
||
|
|
if (memcmp_result != 0) {
|
||
|
|
fprintf(stderr, "%s-MEMCMP\n", prefix);
|
||
|
|
}
|
||
|
|
int strncmp_result = strncmp(buf1, buf2, 4);
|
||
|
|
if (strncmp_result != 0) {
|
||
|
|
fprintf(stderr, "%s-STRNCMP\n", prefix);
|
||
|
|
}
|
||
|
|
int strcmp_result = strcmp(buf1, buf2);
|
||
|
|
if (strcmp_result != 0) {
|
||
|
|
fprintf(stderr, "%s-STRCMP\n", prefix);
|
||
|
|
}
|
||
|
|
const char *strstr_result = strstr(buf1, buf2);
|
||
|
|
if (strstr_result == nullptr) {
|
||
|
|
fprintf(stderr, "%s-STRSTR\n", prefix);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
extern "C" void *__libc_calloc(size_t, size_t);
|
||
|
|
|
||
|
|
extern "C" void *calloc(size_t n, size_t elem_size) {
|
||
|
|
static bool CalledOnce = false;
|
||
|
|
if (!CalledOnce) {
|
||
|
|
callFuzzerInterceptors("CALLOC");
|
||
|
|
CalledOnce = true;
|
||
|
|
}
|
||
|
|
return __libc_calloc(n, elem_size);
|
||
|
|
}
|