70 lines
2.0 KiB
C++
70 lines
2.0 KiB
C++
/* SPDX-FileCopyrightText: 2002-2017 `Jason Evans <jasone@canonware.com>`. All rights reserved.
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* SPDX-FileCopyrightText: 2007-2012 Mozilla Foundation. All rights reserved.
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* SPDX-FileCopyrightText: 2009-2017 Facebook, Inc. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-2-Clause */
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#pragma once
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/** \file
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* \ingroup intern_mem
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*/
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#include <cstdlib>
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/* BEGIN copied from BLI_asan.h */
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/* Clang defines this. */
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#ifndef __has_feature
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# define __has_feature(x) 0
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#endif
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#if (defined(__SANITIZE_ADDRESS__) || __has_feature(address_sanitizer)) && \
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(!defined(_MSC_VER) || _MSC_VER > 1929) /* MSVC 2019 and below doesn't ship ASAN headers. */
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# include "sanitizer/asan_interface.h"
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# define WITH_ASAN
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#else
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/* Ensure return value is used. Just using UNUSED_VARS results in a warning. */
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# define ASAN_POISON_MEMORY_REGION(addr, size) (void)(0 && ((size) != 0 && (addr) != NULL))
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# define ASAN_UNPOISON_MEMORY_REGION(addr, size) (void)(0 && ((size) != 0 && (addr) != NULL))
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#endif
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/* END copied from BLI_asan.h */
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/**
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* Util to trigger an error for the given memory block.
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*
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* When ASAN is available, it will poison the memory block before accessing it, to trigger a
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* detailed ASAN report. Otherwise, it will abort if aborting on assert is set.
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*/
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#ifdef WITH_ASAN
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MEM_INLINE void MEM_trigger_error_on_memory_block(const void *address, const size_t size)
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{
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if (address == nullptr) {
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# ifdef WITH_ASSERT_ABORT
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abort();
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# endif
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return;
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}
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/* Trigger ASAN error by poisoning the memory and accessing it. */
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ASAN_POISON_MEMORY_REGION(address, size);
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char *buffer = const_cast<char *>(static_cast<const char *>(address));
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const char c = *buffer;
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*buffer &= 255;
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*buffer = c;
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/* In case ASAN is set to not terminate on error, but abort on assert is requested. */
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# ifdef WITH_ASSERT_ABORT
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abort();
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# endif
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ASAN_UNPOISON_MEMORY_REGION(address, size);
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}
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#else
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MEM_INLINE void MEM_trigger_error_on_memory_block(const void * /*address*/, const size_t /*size*/)
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{
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# ifdef WITH_ASSERT_ABORT
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abort();
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# endif
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}
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#endif
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