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gcc/libstdc++-v3/include
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Jonathan Wakely ff27340046 Don't unconditionally define feature test macros in <version> 
The macro definitions in <version> should depend on the same
preprocessor conditions as the original macros in other headers.
Otherwise <version> can define macros that imply the availability of
features that are not actually defined.

This fix is incomplete, as __cpp_lib_filesystem should depend on whether
libstdc++fs.a is supported, and several macros should only be defined
when _GLIBCXX_HOSTED is defined. Also, the feature test macros should
define their value as type long, but most are type int.

	* include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP)
	(_GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE): Move definitions here.
	(_GLIBCXX_HAVE_BUILTIN_LAUNDER): Likewise. Use !__is_identifier
	instead of __has_builtin.
	* include/std/type_traits (_GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP)
	(_GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE): Remove definitions from here.
	* include/std/version [!_GLIBCXX_HAS_GTHREADS]
	(__cpp_lib_shared_timed_mutex, __cpp_lib_scoped_lock)
	(__cpp_lib_shared_mutex): Don't define when Gthreads not in use.
	[!_GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP]
	(__cpp_lib_has_unique_object_representations): Don't define when
	builtin not available.
	[!_GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE] (__cpp_lib_is_aggregate):
	Likewise.
	[!_GLIBCXX_HAVE_BUILTIN_LAUNDER] (__cpp_lib_launder): Likewise.
	* libsupc++/new (_GLIBCXX_HAVE_BUILTIN_LAUNDER): Remove definition
	from here.

From-SVN: r263184
 		2018-07-31 23:31:14 +01:00
..
backward P0935R0 Eradicating unnecessarily explicit default constructors 2018-06-14 15:12:24 +01:00
bits Don't unconditionally define feature test macros in <version> 2018-07-31 23:31:14 +01:00
c Update copyright years. 2018-01-03 11:03:58 +01:00
c_compatibility Update copyright years. 2018-01-03 11:03:58 +01:00
c_global Remove <chrono> dependency on _GLIBCXX_USE_C99_STDINT_TR1 2018-07-26 15:01:55 +01:00
c_std Update copyright years. 2018-01-03 11:03:58 +01:00
debug functions.h (__gnu_debug::__check_string): Move... 2018-07-06 17:02:33 +00:00
decimal Update copyright years. 2018-01-03 11:03:58 +01:00
experimental Remove char16_t and char32_t dependency on <stdint.h> 2018-07-26 15:02:01 +01:00
ext Replace safe bool idiom with explicit operator bool 2018-07-31 15:55:36 +01:00
parallel Update copyright years. 2018-01-03 11:03:58 +01:00
precompiled Add initial version of C++17 <memory_resource> header 2018-07-24 22:09:55 +01:00
profile Update copyright years. 2018-01-03 11:03:58 +01:00
std Don't unconditionally define feature test macros in <version> 2018-07-31 23:31:14 +01:00
tr1 PR libstdc++/83140 - assoc_legendre returns negated value when m is odd 2018-05-10 13:59:52 +00:00
tr2 Update copyright years. 2018-01-03 11:03:58 +01:00
Makefile.am Move std::unique_lock definition to a separate header 2018-07-25 11:40:12 +01:00
Makefile.in Move std::unique_lock definition to a separate header 2018-07-25 11:40:12 +01:00