39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may 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,
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* WITHOUT 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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#include <folly/memory/SanitizeAddress.h>
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#include <folly/lang/Extern.h>
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// Address Sanitizer interface may be found at:
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// https://github.com/llvm-mirror/compiler-rt/blob/master/include/sanitizer/asan_interface.h
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extern "C" void* __asan_region_is_poisoned(void*, std::size_t);
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namespace folly {
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namespace detail {
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FOLLY_CREATE_EXTERN_ACCESSOR(
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asan_region_is_poisoned_access_v, __asan_region_is_poisoned);
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void* asan_region_is_poisoned_(void* const ptr, std::size_t len) {
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constexpr auto fun =
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asan_region_is_poisoned_access_v<kIsLibrarySanitizeAddress>;
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return fun ? fun(ptr, len) : nullptr;
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}
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} // namespace detail
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} // namespace folly
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