libstdc++: N3126 draft support.

	* include/std/chrono: Extend constexpr application.
	* testsuite/util/testsuite_common_types.h
	(constexpr_default_constructible, constexpr_single_value_constructible)
	: Add comments about implied constraints.
	* testsuite/20_util/duration/cons/constexpr.cc: Activate all tests.
	* testsuite/20_util/time_point/cons/constexpr.cc: Same.
	* testsuite/20_util/time_point/requirements/constexpr_functions.cc:
	Same.
	* testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust line
	numbers.
	* testsuite/20_util/time_point_cast/constexpr.cc: New.

	* include/std/bitset: Use __SIZEOF_* macros to re-create original
	logic instead of slipshod application of
	std::numeric_limits<T>::max() macros.
	* testsuite/util/testsuite_common_types.h
	(constexpr_default_constructible): Modify.

	* include/std/chrono: Tested constexpr.
	* testsuite/20_util/duration_cast/constexpr.cc: New.
	* testsuite/20_util/time_point/cons/constexpr.cc: New.

	* testsuite/20_util/duration/cons/constexpr.cc: Add single_value tests.
	* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Adjust
	line numbers.
	* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Same.
	* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Same.
	* testsuite/20_util/time_point/cons/constexpr.cc: Add single_value
	tests.
	* testsuite/20_util/time_point/requirements/constexpr_functions.cc: Add.

	* testsuite/util/testsuite_common_types.h: Adjust init.

	* include/std/chrono (duration): Remove defaulted constructor,
	replace with mem-init list.
	* testsuite/20_util/duration/cons/constexpr.cc: Add single value.
	* testsuite/20_util/duration/requirements/constexpr_functions.cc:
	Add non-static member functions.

	* testsuite/20_util/default_delete/cons/constexpr.cc: New, xfail.
	* testsuite/20_util/enable_shared_from_this/cons/constexpr.cc: Same.
	* testsuite/20_util/shared_ptr/cons/constexpr.cc: Same.
	* testsuite/20_util/time_point/requirements/constexpr_functions.cc:
	Same.
	* testsuite/20_util/unique_ptr/cons/constexpr.cc: Same.
	* testsuite/20_util/weak_ptr/cons/constexpr.cc: Same.

	* include/std/bitset: Add constexpr as per N3126 draft.
	* testsuite/23_containers/bitset/cons/constexpr.cc: New.
	* testsuite/23_containers/bitset/requirements/constexpr_functions.cc:
	New.

	* testsuite/util/testsuite_common_types.h: Reset condition.

	* include/bits/random.h: Remove misleading comments.
	* include/bits/regex.h: Add constexpr.
	* testsuite/28_regex/05_constants/syntax_option_type.cc: Add tests.
	* testsuite/28_regex/08_basic_regex/requirements/constexpr_data.cc: New.

	PR libstdc++/46134
	* include/std/chrono: Use default constructor.
	* testsuite/util/testsuite_common_types.h
	(constexpr_default_constructible): Adjust condition.

	PR libstdc++/46133
	* include/std/complex: Adjust complex specialization default
	constructors for constexpr.
	* testsuite/26_numerics/complex/cons/constexpr.cc: Enable tests.

	* include/bits/random.h: Adjust for constexpr as per N3126 draft.
	* testsuite/26_numerics/random/discard_block_engine/requirements/
	constexpr_data.cc: New.
	* testsuite/26_numerics/random/discard_block_engine/requirements/
	constexpr_functions.cc: New.
	* testsuite/26_numerics/random/independent_bits_engine/requirements/
	constexpr_functions.cc: New.
	* testsuite/26_numerics/random/linear_congruential_engine/requirements/
	constexpr_data.cc: New.
	* testsuite/26_numerics/random/linear_congruential_engine/requirements/
	constexpr_functions.cc: New.
	* testsuite/26_numerics/random/mersenne_twister_engine/requirements/
	constexpr_data.cc: New.
	* testsuite/26_numerics/random/mersenne_twister_engine/requirements/
	constexpr_functions.cc: New.
	* testsuite/26_numerics/random/shuffle_order_engine/requirements/
	constexpr_data.cc: New.
	* testsuite/26_numerics/random/shuffle_order_engine/requirements/
	constexpr_functions.cc: New.
	* testsuite/26_numerics/random/subtract_with_carry_engine/requirements/
	constexpr_data.cc: New.
	* testsuite/26_numerics/random/subtract_with_carry_engine/requirements/
	constexpr_functions.cc: New.

	* include/bits/stream_iterator.h: Add constexpr as per N3126 draft.
	* include/bits/streambuf_iterator.h: Same.
	* include/std/complex: Same.
	* testsuite/24_iterators/istream_iterator/cons/constexpr.cc: New.
	* testsuite/24_iterators/istreambuf_iterator/cons/constexpr.cc: New.
	* testsuite/26_numerics/complex/cons/constexpr.cc: New.
	* testsuite/26_numerics/complex/requirements/constexpr_functions.cc:
	New.

	* include/bits/char_traits.h: Add constexpr as per N3126 draft.
	* testsuite/21_strings/char_traits/requirements/constexpr_functions.cc:
	New.

	* include/tr1_impl/array: Add constexpr as per N3126 draft.
	* testsuite/23_containers/array/requirements/
	constexpr_functions.cc: New.

	* include/bits/shared_ptr.h: Revert changes.
	* include/bits/unique_ptr.h: Same.

	* include/std/chrono: Adjust.
	* include/tr1_impl/type_traits: Same.

	* testsuite/util/testsuite_common_types.h: Add test functors.
	* testsuite/20_util/duration/cons/constexpr.cc: New.
	* testsuite/20_util/duration/requirements/constexpr_functions.cc: Same.
	* testsuite/20_util/pair/cons/constexpr.cc: Same.
	* testsuite/20_util/ratio/requirements/constexpr_data.cc: Same.
	* testsuite/27_io/ios_base/types/fmtflags/constexpr_operators.cc: Same.
	* testsuite/27_io/ios_base/types/iostate/constexpr_operators.cc: Same.
	* testsuite/27_io/ios_base/types/openmode/constexpr_operators.cc: Same.
	* testsuite/30_threads/call_once/constexpr.cc: Same.
	* testsuite/30_threads/mutex/cons/constexpr.cc: Same.
	* testsuite/30_threads/once_flag/cons/constexpr.cc: Same.
	* testsuite/tr1/4_metaprogramming/integral_constant/requirements/
	constexpr_data.cc: Same.

	* testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust line numbers.
	* testsuite/29_atomics/atomic/cons/copy_neg.cc: Same.
	* testsuite/29_atomics/atomic_integral/cons/assign_neg.cc: Same.
	* testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Same.
	* testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc: Same.

	* include/bits/allocator.h: Add constexpr as per N3126 draft.
	* include/bits/ios_base.h: Same.
	* include/bits/shared_ptr.h: Same.
	* include/bits/unique_ptr.h: Same.
	* include/bits/stl_iterator.h: Same.
	* include/bits/stl_pair.h: Same.
	* include/std/tuple: Same.
	* include/tr1_impl/type_traits: Same.
	* include/std/chrono: Same.
	* include/std/ratio: Same.
	* include/std/mutex: Same.
	* src/mutex.cc: Same.
	* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Adjust.
	* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Same.
	* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Same.
	* testsuite/20_util/weak_ptr/comparison/cmp_neg.cc: Same.
	* testsuite/27_io/ios_base/cons/assign_neg.cc: Same.
	* testsuite/27_io/ios_base/cons/copy_neg.cc: Same.

	* doc/doxygen/user.cfg.in: Replace _GLIBCXX_USE_CONSTEXPR,
	_GLIBCXX_CONSTEXPR for doxygen generation.

	* src/limits.cc: Undef.
	* testsuite/29_atomics/atomic/cons/constexpr.cc: Adjust.
	* testsuite/29_atomics/atomic_address/cons/constexpr.cc: Same.
	* testsuite/29_atomics/atomic_integral/cons/constexpr.cc: Same.
	* testsuite/29_atomics/atomic_integral/operators/bitwise_neg.c: Same.
	* testsuite/18_support/numeric_limits/constexpr.cc: To...
	* testsuite/18_support/numeric_limits/requirements/
	constexpr_data.cc, constexpr_functions.cc: ...this

	* testsuite/util/testsuite_common_types.h
	(constexpr_single_value_constructible): Add.
	* testsuite/29_atomics/atomic/cons/constexpr.cc: Adjust name.
	* testsuite/29_atomics/atomic_integral/cons/constexpr.cc: Same.
	* testsuite/29_atomics/atomic_address/cons/constexpr.cc: New.
	* testsuite/18_support/numeric_limits/constexpr.cc: New.

	* testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust line numbers.
	* testsuite/29_atomics/atomic/cons/constexpr.cc: Same.
	* testsuite/29_atomics/atomic/cons/copy_neg.cc: Same.
	* testsuite/29_atomics/atomic_integral/cons/assign_neg.cc: Same.
	* testsuite/29_atomics/atomic_integral/cons/constexpr.cc: Same.
	* testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Same.
	* testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc: Same.
	* testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc: Same.
	* testsuite/29_atomics/atomic_integral/operators/increment_neg.cc: Same.

	* include/bits/c++config (_GLIBCXX_CONSTEXPR): Add.
	(_GLIBCXX_USE_CONSTEXPR): Add.
	* include/std/limits: Use it.
	* src/limits.cc: Adjust.
	* testsuite/ext/profile/mutex_extensions.cc: Change line number.

	* include/bits/atomic_0.h: Rework for N3126 draft, add constexpr.
	* include/bits/atomic_2.h: Same.
	* include/bits/atomic_base.h: Same.
	* include/std/atomic: Same.
	* src/atomic.cc: Same.
	* include/bits/atomicfwd_c.h: Remove.
	* include/bits/atomicfwd_cxx.h: Remove.
	* include/c_compatibility/stdatomic.h: Remove.
	* include/Makefile.am: Remove atomicfwd_c.h, atomicfwd_cxx.h,
	stdatomic.h.
	* include/Makefile.in: Regenerate.
	* doc/xml/manual/using.xml: Update list of header files for changes.
	* testsuite/util/testsuite_common_types.h
	(constexpr_constructible): Add.
	* testsuite/29_atomics/atomic/cons/constexpr.cc: New.
	* testsuite/29_atomics/atomic_integral/cons/constexpr.cc: New.
	* testsuite/17_intro/headers/c++200x/stdc++.cc: Modify.
	* testsuite/29_atomics/atomic/cons/assign_neg.cc: Same.
	* testsuite/29_atomics/atomic_address/cons/assign_neg.cc: Same.
	* testsuite/29_atomics/atomic_flag/cons/1.cc: Same.
	* testsuite/29_atomics/atomic_integral/cons/assign_neg.cc: Same.
	* testsuite/29_atomics/headers/atomic/macros.cc: Same.
	* testsuite/29_atomics/headers/atomic/types_std_c++0x.cc: Same.
	* testsuite/29_atomics/headers/atomic/types_std_c++0x_neg.cc: Same.
	* testsuite/29_atomics/atomic_flag/test_and_set/implicit.c: Remove.
	* testsuite/29_atomics/atomic_flag/test_and_set/explicit.c: Same.
	* testsuite/29_atomics/atomic_flag/clear/1.c: Same.
	* testsuite/29_atomics/headers/stdatomic.h/debug_mode.c: Same.
	* testsuite/29_atomics/headers/stdatomic.h/functions.c: Same.
	* testsuite/29_atomics/headers/stdatomic.h/macros.c: Same.
	* testsuite/29_atomics/headers/stdatomic.h/types.c: Same.

	* testsuite/util/testsuite_abi.cc: Add GLIBCXX_3.4.16.

From-SVN: r166171

4 files changed, 68 insertions, 41 deletions

diff --git a/libstdc++-v3/src/atomic.cc b/libstdc++-v3/src/atomic.cc
index 906b0884e2c..08d4d03ac8c 100644
--- a/libstdc++-v3/src/atomic.cc
+++ b/libstdc++-v3/src/atomic.cc
@@ -72,47 +72,49 @@ namespace std
 #endif
       _M_i = false;
     }
+
+  _GLIBCXX_BEGIN_EXTERN_C
+
+  bool
+  atomic_flag_test_and_set_explicit(__atomic_flag_base* __a,
+				    memory_order __m) _GLIBCXX_NOTHROW
+  {
+    atomic_flag* d = static_cast<atomic_flag*>(__a);
+    return d->test_and_set(__m);
   }
 
-  extern "C"
+  void
+  atomic_flag_clear_explicit(__atomic_flag_base* __a,
+			     memory_order __m) _GLIBCXX_NOTHROW
   {
-    bool
-    atomic_flag_test_and_set_explicit(__atomic_flag_base* __a,
-				      memory_order __m) throw()
-    {
-      atomic_flag* d = static_cast<volatile atomic_flag*>(__a);
-      return d->test_and_set(__m);
-    }
+    atomic_flag* d = static_cast<atomic_flag*>(__a);
+    return d->clear(__m);
+  }
 
-    void
-    atomic_flag_clear_explicit(__atomic_flag_base* __a, 
-			       memory_order __m) throw()
-    {
-      atomic_flag* d = static_cast<volatile atomic_flag*>(__a);
-      return d->clear(__m);
-    }
+  void
+  __atomic_flag_wait_explicit(__atomic_flag_base* __a,
+			      memory_order __x) _GLIBCXX_NOTHROW
+  {
+    while (atomic_flag_test_and_set_explicit(__a, __x))
+      { };
+  }
 
-    void
-    __atomic_flag_wait_explicit(__atomic_flag_base* __a,
-				memory_order __x) throw()
-    {
-      while (atomic_flag_test_and_set_explicit(__a, __x))
-	{ };
-    }
+  _GLIBCXX_CONST __atomic_flag_base*
+  __atomic_flag_for_address(const volatile void* __z) _GLIBCXX_NOTHROW
+  {
+    uintptr_t __u = reinterpret_cast<uintptr_t>(__z);
+    __u += (__u >> 2) + (__u << 4);
+    __u += (__u >> 7) + (__u << 5);
+    __u += (__u >> 17) + (__u << 13);
+    if (sizeof(uintptr_t) > 4)
+      __u += (__u >> 31);
+    __u &= ~((~uintptr_t(0)) << LOGSIZE);
+    return flag_table + __u;
+  }
 
-    __atomic_flag_base*
-    __atomic_flag_for_address(const void* __z) throw()
-    {
-      uintptr_t __u = reinterpret_cast<uintptr_t>(__z);
-      __u += (__u >> 2) + (__u << 4);
-      __u += (__u >> 7) + (__u << 5);
-      __u += (__u >> 17) + (__u << 13);
-      if (sizeof(uintptr_t) > 4)
-	__u += (__u >> 31);
-      __u &= ~((~uintptr_t(0)) << LOGSIZE);
-      return flag_table + __u;
-    }
-  } // extern "C"
+  _GLIBCXX_END_EXTERN_C
+
+  } // namespace __atomic0
 } // namespace std
 
 
diff --git a/libstdc++-v3/src/future.cc b/libstdc++-v3/src/future.cc
index d9289487bab..1c9151972af 100644
--- a/libstdc++-v3/src/future.cc
+++ b/libstdc++-v3/src/future.cc
@@ -66,7 +66,8 @@ namespace
 
 namespace std
 {
-  const error_category* const future_category = &__future_category_instance();
+  const error_category& future_category()
+  { return __future_category_instance(); }
 
   future_error::~future_error() throw() { }
 
diff --git a/libstdc++-v3/src/limits.cc b/libstdc++-v3/src/limits.cc
index 9c953c96afd..ac46cf03a60 100644
--- a/libstdc++-v3/src/limits.cc
+++ b/libstdc++-v3/src/limits.cc
@@ -34,6 +34,8 @@
 
 _GLIBCXX_BEGIN_NAMESPACE(std)
 
+#define const _GLIBCXX_USE_CONSTEXPR
+
   const bool __numeric_limits_base::is_specialized;
   const int  __numeric_limits_base::digits;
   const int  __numeric_limits_base::digits10;
@@ -510,6 +512,8 @@ _GLIBCXX_BEGIN_NAMESPACE(std)
   const bool numeric_limits<char32_t>::tinyness_before;
   const float_round_style numeric_limits<char32_t>::round_style;
 
+#undef const
+
 _GLIBCXX_END_NAMESPACE
 
 // XXX GLIBCXX_ABI Deprecated
diff --git a/libstdc++-v3/src/mutex.cc b/libstdc++-v3/src/mutex.cc
index 74a82c8aa82..2e9124d3d5f 100644
--- a/libstdc++-v3/src/mutex.cc
+++ b/libstdc++-v3/src/mutex.cc
@@ -1,6 +1,6 @@
 // mutex -*- C++ -*-
 
-// Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+// Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -39,10 +39,6 @@ namespace
 
 namespace std
 {
-  const defer_lock_t defer_lock = defer_lock_t();
-  const try_to_lock_t try_to_lock = try_to_lock_t();
-  const adopt_lock_t adopt_lock = adopt_lock_t();
-
 #ifdef _GLIBCXX_HAVE_TLS
   __thread void* __once_callable;
   __thread void (*__once_call)();
@@ -94,4 +90,28 @@ namespace std
   }
 }
 
+// XXX GLIBCXX_ABI Deprecated
+// gcc-4.6.0
+// <mutex> export changes
+#if defined(_GLIBCXX_SYMVER_GNU) && defined(PIC) \
+    && defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \
+    && defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT)
+
+namespace __gnu_cxx
+{
+  std::defer_lock_t defer_lock;
+  std::try_to_lock_t try_to_lock;
+  std::adopt_lock_t adopt_lock;
+}
+
+#define _GLIBCXX_ASM_SYMVER(cur, old, version) \
+   asm (".symver " #cur "," #old "@@" #version);
+
+_GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx10adopt_lockE, _ZSt10adopt_lock, GLIBCXX_3.4.11)
+_GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx10defer_lockE, _ZSt10defer_lock, GLIBCXX_3.4.11)
+_GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx11try_to_lockE, _ZSt11try_to_lock, GLIBCXX_3.4.11)
+
+
+#endif
+
 #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1