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Pull in r255683 from upstream libc++ trunk (by Eric Fiselier):

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[libcxx] Enable noexcept for GCC 4.6 and greater

  Summary:
  This patch allows GCC 4.6 and above to use `noexcept` as opposed to
  `throw()`.

  Is it an ABI safe change to suddenly switch on `noexcept`? I imagine
  it must be because it's disabled in w/ clang in C++03 but not C++11.

  Reviewers: danalbert, jroelofs, mclow.lists

  Subscribers: cfe-commits

  Differential Revision: http://reviews.llvm.org/D15516

This should fix errors from gcc 4.6 and higher when compiling llvm-cov
and/or other llvm tools.

Reported by:	bdrewery
This commit is contained in:
Dimitry Andric 2016-03-27 21:20:43 +00:00
parent cfe3da09e2
commit faaf0c6eaa
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=297322
1 changed files with 15 additions and 19 deletions
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34
contrib/libc++/include/__config
View File

@ -364,14 +364,8 @@ typedef __char32_t char32_t;
#endif
#endif
#if (__has_feature(cxx_noexcept))
# define _NOEXCEPT noexcept
# define _NOEXCEPT_(x) noexcept(x)
# define _NOEXCEPT_OR_FALSE(x) noexcept(x)
#else
# define _NOEXCEPT throw()
# define _NOEXCEPT_(x)
# define _NOEXCEPT_OR_FALSE(x) false
#if !(__has_feature(cxx_noexcept))
#define _LIBCPP_HAS_NO_NOEXCEPT
#endif
#if __has_feature(underlying_type)
@ -439,10 +433,6 @@ namespace std {
#define _LIBCPP_HAS_NO_VARIABLE_TEMPLATES
#endif
#define _NOEXCEPT throw()
#define _NOEXCEPT_(x)
#define _NOEXCEPT_OR_FALSE(x) false
#ifndef __GXX_EXPERIMENTAL_CXX0X__
#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
@ -456,6 +446,7 @@ namespace std {
#define _LIBCPP_HAS_NO_RVALUE_REFERENCES
#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
#define _LIBCPP_HAS_NO_STRONG_ENUMS
#define _LIBCPP_HAS_NO_NOEXCEPT
#else // __GXX_EXPERIMENTAL_CXX0X__
@ -479,6 +470,7 @@ namespace std {
#endif // _GNUC_VER < 404
#if _GNUC_VER < 406
#define _LIBCPP_HAS_NO_NOEXCEPT
#define _LIBCPP_HAS_NO_NULLPTR
#endif
@ -513,15 +505,14 @@ using namespace _LIBCPP_NAMESPACE __attribute__((__strong__));
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#define _LIBCPP_HAS_NO_DELETED_FUNCTIONS
#define _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
#define _LIBCPP_HAS_NO_NOEXCEPT
#define __alignof__ __alignof
#define _LIBCPP_NORETURN __declspec(noreturn)
#define _LIBCPP_UNUSED
#define _ALIGNAS(x) __declspec(align(x))
#define _LIBCPP_HAS_NO_VARIADICS
#define _NOEXCEPT throw ()
#define _NOEXCEPT_(x)
#define _NOEXCEPT_OR_FALSE(x) false
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {
#define _LIBCPP_END_NAMESPACE_STD }
@ -541,14 +532,11 @@ namespace std {
#define _LIBCPP_NORETURN __attribute__((noreturn))
#define _LIBCPP_UNUSED
#define _NOEXCEPT throw()
#define _NOEXCEPT_(x)
#define _NOEXCEPT_OR_FALSE(x) false
#define _LIBCPP_HAS_NO_TEMPLATE_ALIASES
#define _LIBCPP_HAS_NO_ADVANCED_SFINAE
#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
#define _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
#define _LIBCPP_HAS_NO_NOEXCEPT
#define _LIBCPP_HAS_NO_NULLPTR
#define _LIBCPP_HAS_NO_UNICODE_CHARS
#define _LIBCPP_HAS_IS_BASE_OF
@ -572,6 +560,14 @@ namespace std {
#endif // __clang__ || __GNUC__ || _MSC_VER || __IBMCPP__
#ifndef _LIBCPP_HAS_NO_NOEXCEPT
# define _NOEXCEPT noexcept
# define _NOEXCEPT_(x) noexcept(x)
#else
# define _NOEXCEPT throw()
# define _NOEXCEPT_(x)
#endif
#ifdef _LIBCPP_HAS_NO_UNICODE_CHARS
typedef unsigned short char16_t;
typedef unsigned int char32_t;