llvm-project

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//===-- sanitizer_mac_libcdep.cpp -----------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is shared between various sanitizers' runtime libraries and
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// implements OSX-specific functions.
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//===----------------------------------------------------------------------===//
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#include "sanitizer_platform.h"
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#if SANITIZER_APPLE
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#include "sanitizer_mac.h"
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#include <sys/mman.h>
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namespace __sanitizer {
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void RestrictMemoryToMaxAddress(uptr max_address) {
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  uptr size_to_mmap = GetMaxUserVirtualAddress() + 1 - max_address;
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  void *res = MmapFixedNoAccess(max_address, size_to_mmap, "high gap");
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  CHECK(res != MAP_FAILED);
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}
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}  // namespace __sanitizer
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#endif  // SANITIZER_APPLE
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