std::condition_variable::wait(unique_lock<mutex>&) is incorrectly marked
noexcept, which means that the __forced_unwind exception used by NPTL
cancellation will terminate the process. It should allow exceptions to
pass through, so that a thread can be cleanly cancelled when waiting on
a condition variable.

The new behaviour is exported as a new version of the symbol, to avoid
an ABI break for existing code linked to the non-throwing definition of
the function. Code linked against older releases will have a reference
to the @GLIBCXX_3.4.11 version, andcode compiled against the new
libstdc++ will get a reference to the @@GLIBCXX_3.4.30 version.

libstdc++-v3/ChangeLog:

	PR libstdc++/103382
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.11): Do not export old
	symbol if .symver renaming is supported.
	(GLIBCXX_3.4.30): Export new symbol if .symver renaming is
	supported.
	* doc/xml/manual/evolution.xml: Document change.
	* doc/html/manual/api.html: Regenerate.
	* include/bits/std_mutex.h (__condvar::wait, __condvar::wait_until):
	Remove noexcept.
	* include/std/condition_variable (condition_variable::wait):
	Likewise.
	* src/c++11/condition_variable.cc (condition_variable::wait):
	Likewise.
	* src/c++11/compatibility-condvar.cc (__nothrow_wait_cv::wait):
	Define nothrow wrapper around std::condition_variable::wait and
	export the old symbol as an alias to it.
	* testsuite/30_threads/condition_variable/members/103382.cc: New test.

This introduces a new internal utility, std::__condvar, which is a
simplified form of std::condition_variable. It has no dependency on
<chrono> or std::unique_lock, which allows it to be used in
<bits/atomic_wait.h>.

This avoids repeating the #ifdef __GTHREAD_COND_INIT preprocessor
conditions and associated logic for initializing a __gthread_cond_t
correctly. It also encapsulates most of the __gthread_cond_xxx functions
as member functions of __condvar.

libstdc++-v3/ChangeLog:

	* include/bits/atomic_timed_wait.h (__cond_wait_until_impl):
	Do not define when _GLIBCXX_HAVE_LINUX_FUTEX is defined. Use
	__condvar and mutex instead of __gthread_cond_t and
	unique_lock<mutex>.
	(__cond_wait_until): Likewise. Fix test for return value of
	__cond_wait_until_impl.
	(__timed_waiters::_M_do_wait_until): Use __condvar instead
	of __gthread_cond_t.
	* include/bits/atomic_wait.h: Remove <bits/unique_lock.h>
	include. Only include <bits/std_mutex.h> if not using futexes.
	(__platform_wait_max_value): Remove unused variable.
	(__waiters::lock_t): Use lock_guard instead of unique_lock.
	(__waiters::_M_cv): Use __condvar instead of __gthread_cond_t.
	(__waiters::_M_do_wait(__platform_wait_t)): Likewise.
	(__waiters::_M_notify()): Likewise. Use notify_one() if not
	asked to notify all.
	* include/bits/std_mutex.h (__condvar): New type.
	* include/std/condition_variable (condition_variable::_M_cond)
	(condition_variable::wait_until): Use __condvar instead of
	__gthread_cond_t.
	* src/c++11/condition_variable.cc (condition_variable): Define
	default constructor and destructor as defaulted.
	(condition_variable::wait, condition_variable::notify_one)
	(condition_variable::notify_all): Forward to corresponding
	member function of __condvar.

From-SVN: r279813

From-SVN: r267494

By adding fallback definitions of std::intmax_t and std::uintmax_t it's
possible to define <ratio> without _GLIBCXX_USE_C99_STDINT_TR1. This in
turn allows most of <chrono> to be defined, which removes the dependency
on _GLIBCXX_USE_C99_STDINT_TR1 for all of the C++11 concurrency features.

The compiler defines __INTMAX_TYPE__ and __UINTMAX_TYPE__
unconditionally so it should be safe to rely on them.

	* include/bits/atomic_futex.h [!_GLIBCXX_USE_C99_STDINT_TR1]
	(__atomic_futex_unsigned_base): Remove dependency on
	_GLIBCXX_USE_C99_STDINT_TR1 macro.
	* include/bits/unique_lock.h [!_GLIBCXX_USE_C99_STDINT_TR1]
	(unique_lock): Remove dependency on _GLIBCXX_USE_C99_STDINT_TR1.
	* include/c_global/cstdint [!_GLIBCXX_USE_C99_STDINT_TR1] (intmax_t)
	(uintmax_t): Define using predefined macros.
	* include/std/chrono [!_GLIBCXX_USE_C99_STDINT_TR1] (duration)
	(time_point, system_clock, high_resolution_clock, steady_clock): Remove
	dependency on _GLIBCXX_USE_C99_STDINT_TR1 macro.
	(nanoseconds, microseconds, milliseconds, seconds, minutes, hours):
	[!_GLIBCXX_USE_C99_STDINT_TR1]: Define using __INT64_TYPE__ or
	long long when <stdint.h> is not usable.
	* include/std/condition_variable [!_GLIBCXX_USE_C99_STDINT_TR1]
	(condition_variable, condition_variable_any): Remove dependency on
	_GLIBCXX_USE_C99_STDINT_TR1.
	* include/std/future [!_GLIBCXX_USE_C99_STDINT_TR1] (future, promise)
	(packaged_task, async): Likewise.
	* include/std/mutex [!_GLIBCXX_USE_C99_STDINT_TR1] (recursive_mutex)
	(timed_mutex, recursive_timed_mutex, try_lock, lock, scoped_lock)
	(once_flag, call_once): Likewise.
	* include/std/ratio [!_GLIBCXX_USE_C99_STDINT_TR1] (ratio): Likewise.
	* include/std/shared_mutex [!_GLIBCXX_USE_C99_STDINT_TR1]
	(shared_mutex, shared_timed_mutex, shared_lock): Likewise.
	* include/std/thread [!_GLIBCXX_USE_C99_STDINT_TR1] (thread)
	(this_thread::get_id, this_thread::yield, this_thread::sleep_for)
	(this_thread::sleep_until): Likewise.
	* src/c++11/chrono.cc: Remove dependency on
	_GLIBCXX_USE_C99_STDINT_TR1 macro.
	* src/c++11/condition_variable.cc: Likewise.
	* src/c++11/futex.cc: Likewise.
	* src/c++11/future.cc: Likewise.
	* src/c++11/mutex.cc: Likewise.
	* src/c++11/thread.cc: Likewise.
	* testsuite/20_util/duration/literals/range_neg.cc: Adjust dg-error.
	* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
	* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
	* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
	* testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Likewise.
	* testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.

From-SVN: r263001