1c602c5fe5
The C99 restrict keyword is spelled __restrict in the libc headers so it can be parsed by C++ compilers with GNU extensions that recognize it. When GNU extensions are not available in C++
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
//===-- Common definitions for LLVM-libc public header files --------------===//
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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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#ifndef LLVM_LIBC_COMMON_H
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#define LLVM_LIBC_COMMON_H
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#ifdef __cplusplus
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#undef __BEGIN_C_DECLS
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#define __BEGIN_C_DECLS extern "C" {
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#undef __END_C_DECLS
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#define __END_C_DECLS }
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// Standard C++ doesn't have C99 restrict but GNU C++ has it with __ spelling.
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#undef __restrict
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#ifndef __GNUC__
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#define __restrict
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#endif
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#undef _Noreturn
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#define _Noreturn [[noreturn]]
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#undef _Alignas
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#define _Alignas alignas
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#undef _Static_assert
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#define _Static_assert static_assert
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#undef _Alignof
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#define _Alignof alignof
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#undef _Thread_local
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#define _Thread_local thread_local
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#undef __NOEXCEPT
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#define __NOEXCEPT noexcept
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#else // not __cplusplus
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#undef __BEGIN_C_DECLS
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#define __BEGIN_C_DECLS
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#undef __END_C_DECLS
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#define __END_C_DECLS
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#undef __restrict
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#define __restrict restrict // C99 and above support the restrict keyword.
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#undef __NOEXCEPT
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#define __NOEXCEPT
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#endif // __cplusplus
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#endif // LLVM_LIBC_COMMON_H
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