mirror of
https://github.com/facebook/zstd.git
synced 2025-07-23 14:41:07 +03:00
4be08ba122
The FUZZ_malloc_rand() function was incorrectly always returning NULL for zero-size allocations. The random offset generated by FUZZ_dataProducer_int32Range() was not being added to the pointer variable, causing the function to always return (void *)0.
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/*
|
|
* Copyright (c) Meta Platforms, Inc. and affiliates.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under both the BSD-style license (found in the
|
|
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
|
|
* in the COPYING file in the root directory of this source tree).
|
|
* You may select, at your option, one of the above-listed licenses.
|
|
*/
|
|
#include "fuzz_helpers.h"
|
|
|
|
#include <stddef.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
void* FUZZ_malloc(size_t size)
|
|
{
|
|
if (size > 0) {
|
|
void* const mem = malloc(size);
|
|
FUZZ_ASSERT(mem);
|
|
return mem;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void* FUZZ_malloc_rand(size_t size, FUZZ_dataProducer_t *producer)
|
|
{
|
|
if (size > 0) {
|
|
void* const mem = malloc(size);
|
|
FUZZ_ASSERT(mem);
|
|
return mem;
|
|
} else {
|
|
uintptr_t ptr = 0;
|
|
/* Return junk pointer 50% of the time */
|
|
if (FUZZ_dataProducer_uint32Range(producer, 0, 1))
|
|
ptr += FUZZ_dataProducer_int32Range(producer, -1000000, 1000000);
|
|
return (void*)ptr;
|
|
}
|
|
}
|
|
|
|
int FUZZ_memcmp(void const* lhs, void const* rhs, size_t size)
|
|
{
|
|
if (size == 0) {
|
|
return 0;
|
|
}
|
|
return memcmp(lhs, rhs, size);
|
|
}
|