blender-archive/source/blender/blenlib/BLI_asan.h

/* SPDX-License-Identifier: GPL-2.0-or-later */

#pragma once

/* Clang defines this. */
#ifndef __has_feature
#  define __has_feature(x) 0
#endif

#if (defined(__SANITIZE_ADDRESS__) || __has_feature(address_sanitizer)) && !defined(_MSC_VER)
#  include "sanitizer/asan_interface.h"
#else
/* Ensure return value is used. Just using UNUSED_VARS results in a warning. */
#  define ASAN_POISON_MEMORY_REGION(addr, size) (void)(0 && ((size) != 0 && (addr) != NULL))
#  define ASAN_UNPOISON_MEMORY_REGION(addr, size) (void)(0 && ((size) != 0 && (addr) != NULL))
#endif

/**
 * Mark a region of memory as "freed". When using address sanitizer, accessing the given memory
 * region will cause an use-after-poison error. This can be used to find errors when dealing with
 * uninitialized memory in custom containers.
 */
#define BLI_asan_poison(addr, size) ASAN_POISON_MEMORY_REGION(addr, size)

/**
 * Mark a region of memory as usable again.
 */
#define BLI_asan_unpoison(addr, size) ASAN_UNPOISON_MEMORY_REGION(addr, size)
File headers: SPDX License migration Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069 2022-02-11 09:07:11 +11:00			`/* SPDX-License-Identifier: GPL-2.0-or-later */`
BLI: deduplicate address sanitizer code Reviewers: brecht, campbellbarton Differential Revision: https://developer.blender.org/D7731 2020-05-14 17:42:54 +02:00
			`#pragma once`

			`/* Clang defines this. */`
			`#ifndef __has_feature`
			`# define __has_feature(x) 0`
			`#endif`

MSVC: ASAN support for VS 16.9 This enables ASAN support when used with VS 16.9 enable as usual in cmake with the WITH_COMPILER_ASAN option, or when using make.bat just tag on `asan' to the invocation, ie: `make lite 2019 asan` MSVC: Asan support for 16.9 This enables ASAN support when used with VS 16.9 enable as usual in cmake with the WITH_COMPILER_ASAN option, or when using make.bat just tag on `asan' to the invocation, ie: `make lite 2019 asan` Differential Revision: https://developer.blender.org/D7794 Reviewed By: brecht, sergey 2021-03-29 19:11:17 -06:00			`#if (defined(__SANITIZE_ADDRESS__) \|\| __has_feature(address_sanitizer)) && !defined(_MSC_VER)`
BLI: deduplicate address sanitizer code Reviewers: brecht, campbellbarton Differential Revision: https://developer.blender.org/D7731 2020-05-14 17:42:54 +02:00			`# include "sanitizer/asan_interface.h"`
			`#else`
			`/* Ensure return value is used. Just using UNUSED_VARS results in a warning. */`
			`# define ASAN_POISON_MEMORY_REGION(addr, size) (void)(0 && ((size) != 0 && (addr) != NULL))`
			`# define ASAN_UNPOISON_MEMORY_REGION(addr, size) (void)(0 && ((size) != 0 && (addr) != NULL))`
			`#endif`

			`/**`
			`* Mark a region of memory as "freed". When using address sanitizer, accessing the given memory`
			`* region will cause an use-after-poison error. This can be used to find errors when dealing with`
			`* uninitialized memory in custom containers.`
			`*/`
			`#define BLI_asan_poison(addr, size) ASAN_POISON_MEMORY_REGION(addr, size)`

			`/**`
			`* Mark a region of memory as usable again.`
			`*/`
			`#define BLI_asan_unpoison(addr, size) ASAN_UNPOISON_MEMORY_REGION(addr, size)`