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9eddaeb534
Declare __STDC_FORMAT_MACROS, __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS before including real inttypes.h/stdint.h when the wrapper-header is included in C++11, in order to enable the necessary macros in C99-compliant libc. The C99 standard defined that the format macros in inttypes.h should be defined by the C++ implementations only when __STDC_FORMAT_MACROS is defined, and the limit and constant macros in stdint.h should be defined only when __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS are defined appropriately. Following this specification, multiple old versions of glibc up to 2.17 do not define those macros by default for C++, rendering the libc++ headers non-compliant to the C++11 standard. In order to achieve the necessary compliance, __STDC_FORMAT_MACROS is defined in wrapped inttypes.h just before including the system inttypes.h, when C++11 or newer is used. Both __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS are defined in newly-wrapped stdint.h. This fixes the C++11 compliance while preserving the current behavior for C++03. Differential Revision: https://reviews.llvm.org/D24903 llvm-svn: 282435
122 lines
2.0 KiB
C++
122 lines
2.0 KiB
C++
// -*- C++ -*-
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//===---------------------------- stdint.h --------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_STDINT_H
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#define _LIBCPP_STDINT_H
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/*
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stdint.h synopsis
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Macros:
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INT8_MIN
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INT16_MIN
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INT32_MIN
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INT64_MIN
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INT8_MAX
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INT16_MAX
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INT32_MAX
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INT64_MAX
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UINT8_MAX
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UINT16_MAX
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UINT32_MAX
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UINT64_MAX
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INT_LEAST8_MIN
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INT_LEAST16_MIN
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INT_LEAST32_MIN
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INT_LEAST64_MIN
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INT_LEAST8_MAX
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INT_LEAST16_MAX
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INT_LEAST32_MAX
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INT_LEAST64_MAX
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UINT_LEAST8_MAX
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UINT_LEAST16_MAX
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UINT_LEAST32_MAX
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UINT_LEAST64_MAX
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INT_FAST8_MIN
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INT_FAST16_MIN
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INT_FAST32_MIN
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INT_FAST64_MIN
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INT_FAST8_MAX
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INT_FAST16_MAX
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INT_FAST32_MAX
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INT_FAST64_MAX
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UINT_FAST8_MAX
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UINT_FAST16_MAX
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UINT_FAST32_MAX
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UINT_FAST64_MAX
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INTPTR_MIN
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INTPTR_MAX
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UINTPTR_MAX
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INTMAX_MIN
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INTMAX_MAX
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UINTMAX_MAX
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PTRDIFF_MIN
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PTRDIFF_MAX
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SIG_ATOMIC_MIN
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SIG_ATOMIC_MAX
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SIZE_MAX
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WCHAR_MIN
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WCHAR_MAX
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WINT_MIN
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WINT_MAX
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INT8_C(value)
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INT16_C(value)
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INT32_C(value)
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INT64_C(value)
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UINT8_C(value)
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UINT16_C(value)
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UINT32_C(value)
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UINT64_C(value)
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INTMAX_C(value)
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UINTMAX_C(value)
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*/
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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 macros needed
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for C++11 unless __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS
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are defined
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*/
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#if defined(__cplusplus) && !defined(__STDC_LIMIT_MACROS)
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# define __STDC_LIMIT_MACROS
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#endif
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#if defined(__cplusplus) && !defined(__STDC_CONSTANT_MACROS)
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# define __STDC_CONSTANT_MACROS
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#endif
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#include_next <stdint.h>
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#endif // _LIBCPP_STDINT_H
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