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1//===-- sanitizer_redefine_builtins.h ---------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// Redefine builtin functions to use internal versions. This is needed where10// compiler optimizations end up producing unwanted libcalls!11//12//===----------------------------------------------------------------------===//13#ifndef SANITIZER_COMMON_NO_REDEFINE_BUILTINS14# ifndef SANITIZER_REDEFINE_BUILTINS_H15# define SANITIZER_REDEFINE_BUILTINS_H16 17// The asm hack only works with GCC and Clang.18# if !defined(_WIN32) && !defined(_AIX) && !defined(__APPLE__)19 20asm(R"(21 .set memcpy, __sanitizer_internal_memcpy22 .set memmove, __sanitizer_internal_memmove23 .set memset, __sanitizer_internal_memset24 )");25 26# if defined(__cplusplus) && \27 !defined(SANITIZER_COMMON_REDEFINE_BUILTINS_IN_STD)28 29// The builtins should not be redefined in source files that make use of C++30// standard libraries, in particular where C++STL headers with inline functions31// are used. The redefinition in such cases would lead to ODR violations.32//33// Try to break the build in common cases where builtins shouldn't be redefined.34namespace std {35class Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file {36 Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file(37 const Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file&) = delete;38 Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file& operator=(39 const Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file&) = delete;40};41using array = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;42using atomic = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;43using function = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;44using map = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;45using set = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;46using shared_ptr = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;47using string = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;48using unique_ptr = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;49using unordered_map = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;50using unordered_set = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;51using vector = Define_SANITIZER_COMMON_NO_REDEFINE_BUILTINS_in_cpp_file;52} // namespace std53 54# endif // __cpluplus55# endif // !_WIN3256 57# endif // SANITIZER_REDEFINE_BUILTINS_H58#endif // SANITIZER_COMMON_NO_REDEFINE_BUILTINS59