44 lines
1.2 KiB
C++
44 lines
1.2 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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#pragma once
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#include <folly/Portability.h>
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namespace folly {
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namespace detail {
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void* asan_region_is_poisoned_(void* ptr, std::size_t len);
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}
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// asan_region_is_poisoned
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//
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// mimic: __asan_region_is_poisoned, llvm compiler-rt
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//
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// Returns the address of the first byte in the region known to be poisoned,
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// or nullptr if there is no such byte. If Address Sanitizer is unavailable,
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// always returns nullptr.
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FOLLY_ALWAYS_INLINE static void* asan_region_is_poisoned(
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void* const ptr, std::size_t const len) {
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return kIsSanitizeAddress //
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? detail::asan_region_is_poisoned_(ptr, len)
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: nullptr;
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}
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} // namespace folly
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