b9a2658a3e
This patch implements the forwarding to frozen C++03 headers as discussed in https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc. In the RFC, we initially proposed selecting the right headers from the Clang driver, however consensus seemed to steer towards handling this in the library itself. This patch implements that direction. At a high level, the changes basically amount to making each public header look like this: ``` // inside <vector> #ifdef _LIBCPP_CXX03_LANG # include <__cxx03/vector> #else // normal <vector> content #endif ``` In most cases, public headers are simple umbrella headers so there isn't much code in the #else branch. In other cases, the #else branch contains the actual implementation of the header.
269 lines
4.1 KiB
C++
269 lines
4.1 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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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 _LIBCPP_INTTYPES_H
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// AIX system headers need inttypes.h to be re-enterable while _STD_TYPES_T
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// is defined until an inclusion of it without _STD_TYPES_T occurs, in which
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// case the header guard macro is defined.
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#if !defined(_AIX) || !defined(_STD_TYPES_T)
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# define _LIBCPP_INTTYPES_H
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#endif // _STD_TYPES_T
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/*
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inttypes.h synopsis
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This entire header is C99 / C++0X
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#include <stdint.h> // <cinttypes> includes <cstdint>
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Macros:
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PRId8
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PRId16
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PRId32
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PRId64
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PRIdLEAST8
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PRIdLEAST16
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PRIdLEAST32
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PRIdLEAST64
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PRIdFAST8
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PRIdFAST16
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PRIdFAST32
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PRIdFAST64
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PRIdMAX
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PRIdPTR
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PRIi8
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PRIi16
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PRIi32
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PRIi64
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PRIiLEAST8
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PRIiLEAST16
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PRIiLEAST32
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PRIiLEAST64
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PRIiFAST8
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PRIiFAST16
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PRIiFAST32
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PRIiFAST64
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PRIiMAX
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PRIiPTR
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PRIo8
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PRIo16
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PRIo32
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PRIo64
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PRIoLEAST8
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PRIoLEAST16
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PRIoLEAST32
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PRIoLEAST64
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PRIoFAST8
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PRIoFAST16
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PRIoFAST32
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PRIoFAST64
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PRIoMAX
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PRIoPTR
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PRIu8
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PRIu16
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PRIu32
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PRIu64
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PRIuLEAST8
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PRIuLEAST16
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PRIuLEAST32
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PRIuLEAST64
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PRIuFAST8
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PRIuFAST16
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PRIuFAST32
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PRIuFAST64
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PRIuMAX
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PRIuPTR
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PRIx8
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PRIx16
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PRIx32
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PRIx64
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PRIxLEAST8
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PRIxLEAST16
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PRIxLEAST32
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PRIxLEAST64
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PRIxFAST8
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PRIxFAST16
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PRIxFAST32
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PRIxFAST64
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PRIxMAX
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PRIxPTR
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PRIX8
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PRIX16
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PRIX32
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PRIX64
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PRIXLEAST8
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PRIXLEAST16
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PRIXLEAST32
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PRIXLEAST64
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PRIXFAST8
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PRIXFAST16
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PRIXFAST32
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PRIXFAST64
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PRIXMAX
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PRIXPTR
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SCNd8
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SCNd16
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SCNd32
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SCNd64
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SCNdLEAST8
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SCNdLEAST16
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SCNdLEAST32
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SCNdLEAST64
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SCNdFAST8
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SCNdFAST16
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SCNdFAST32
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SCNdFAST64
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SCNdMAX
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SCNdPTR
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SCNi8
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SCNi16
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SCNi32
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SCNi64
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SCNiLEAST8
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SCNiLEAST16
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SCNiLEAST32
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SCNiLEAST64
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SCNiFAST8
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SCNiFAST16
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SCNiFAST32
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SCNiFAST64
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SCNiMAX
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SCNiPTR
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SCNo8
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SCNo16
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SCNo32
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SCNo64
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SCNoLEAST8
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SCNoLEAST16
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SCNoLEAST32
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SCNoLEAST64
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SCNoFAST8
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SCNoFAST16
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SCNoFAST32
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SCNoFAST64
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SCNoMAX
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SCNoPTR
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SCNu8
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SCNu16
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SCNu32
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SCNu64
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SCNuLEAST8
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SCNuLEAST16
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SCNuLEAST32
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SCNuLEAST64
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SCNuFAST8
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SCNuFAST16
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SCNuFAST32
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SCNuFAST64
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SCNuMAX
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SCNuPTR
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SCNx8
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SCNx16
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SCNx32
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SCNx64
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SCNxLEAST8
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SCNxLEAST16
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SCNxLEAST32
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SCNxLEAST64
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SCNxFAST8
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SCNxFAST16
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SCNxFAST32
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SCNxFAST64
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SCNxMAX
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SCNxPTR
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Types:
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imaxdiv_t
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intmax_t imaxabs(intmax_t j);
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imaxdiv_t imaxdiv(intmax_t numer, intmax_t denom);
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intmax_t strtoimax(const char* restrict nptr, char** restrict endptr, int base);
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uintmax_t strtoumax(const char* restrict nptr, char** restrict endptr, int base);
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intmax_t wcstoimax(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base);
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uintmax_t wcstoumax(const wchar_t* restrict nptr, wchar_t** restrict endptr, int base);
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*/
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#if defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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# include <__cxx03/inttypes.h>
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#else
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# include <__config>
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# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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# endif
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/* C99 stdlib (e.g. glibc < 2.18) does not provide format macros needed
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for C++11 unless __STDC_FORMAT_MACROS is defined
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*/
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# if defined(__cplusplus) && !defined(__STDC_FORMAT_MACROS)
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# define __STDC_FORMAT_MACROS
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# endif
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# if __has_include_next(<inttypes.h>)
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# include_next <inttypes.h>
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# endif
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# ifdef __cplusplus
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# include <stdint.h>
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# undef imaxabs
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# undef imaxdiv
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# endif // __cplusplus
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#endif // defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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#endif // _LIBCPP_INTTYPES_H
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