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https://github.com/yuzu-emu/mbedtls
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c6b098655e
Exercise the library functions with calloc returning NULL for a size
of 0. Make this a separate job with UBSan (and ASan) to detect
places where we try to dereference the result of calloc(0) or to do
things like
buf = calloc(size, 1);
if (buf == NULL && size != 0) return INSUFFICIENT_MEMORY;
memcpy(buf, source, size);
which has undefined behavior when buf is NULL at the memcpy call even
if size is 0.
This is needed because other test components jobs either use the system
malloc which returns non-NULL on Linux and FreeBSD, or the
memory_buffer_alloc malloc which returns NULL but does not give as
useful feedback with ASan (because the whole heap is a single C
object).
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/* config.h wrapper that forces calloc(0) to return NULL.
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* Used for testing.
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*/
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/*
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* Copyright (C) 2019, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#ifndef MBEDTLS_CONFIG_H
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/* Don't #define MBEDTLS_CONFIG_H, let config.h do it. */
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#include "mbedtls/config.h"
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#include <stdlib.h>
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static inline void *custom_calloc( size_t nmemb, size_t size )
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{
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if( nmemb == 0 || size == 0 )
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return( NULL );
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return( calloc( nmemb, size ) );
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}
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#define MBEDTLS_PLATFORM_MEMORY
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#define MBEDTLS_PLATFORM_STD_CALLOC custom_calloc
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#endif /* MBEDTLS_CONFIG_H */
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