On 05/04/23 01:09 +0200, Arsen Arsenović wrote:
Due to recent, large changes in libstdc++, the feature test macros
declared in <version> got out of sync with the other headers that
possibly declare them.
libstdc++-v3/ChangeLog:
* include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
Synchronize the definition block with...
* include/bits/ptr_traits.h (__cpp_lib_constexpr_memory):
... this one here. Also define the 202202L value, rather than
leaving it up to purely unique_ptr.h, so that the value is
synchronized across all headers.
(__gnu_debug::_Safe_iterator_base): Move into new conditional
block.
* include/std/memory (__cpp_lib_atomic_value_initialization):
Define on freestanding under the same conditions as in
atomic_base.h.
* include/std/version (__cpp_lib_robust_nonmodifying_seq_ops):
Also define on freestanding.
(__cpp_lib_to_chars): Ditto.
(__cpp_lib_gcd): Ditto.
(__cpp_lib_gcd_lcm): Ditto.
(__cpp_lib_raw_memory_algorithms): Ditto.
(__cpp_lib_array_constexpr): Ditto.
(__cpp_lib_nonmember_container_access): Ditto.
(__cpp_lib_clamp): Ditto.
(__cpp_lib_constexpr_char_traits): Ditto.
(__cpp_lib_constexpr_string): Ditto.
(__cpp_lib_sample): Ditto.
(__cpp_lib_lcm): Ditto.
(__cpp_lib_constexpr_iterator): Ditto.
(__cpp_lib_constexpr_char_traits): Ditto.
(__cpp_lib_interpolate): Ditto.
(__cpp_lib_constexpr_utility): Ditto.
(__cpp_lib_shift): Ditto.
(__cpp_lib_ranges): Ditto.
(__cpp_lib_move_iterator_concept): Ditto.
(__cpp_lib_constexpr_numeric): Ditto.
(__cpp_lib_constexpr_functional): Ditto.
(__cpp_lib_constexpr_algorithms): Ditto.
(__cpp_lib_constexpr_tuple): Ditto.
(__cpp_lib_constexpr_memory): Ditto.
---
Evening,
This patchset is a replacement to and extension of the one presented at
https://inbox.sourceware.org/libstdc++/20230309222626.4008373-1-ar...@aarsen.me/
... that has been rebased as to include newer additions, and extended to
cover some regressions that seem to have occurred recently in
freestanding mode.
Tested on x86_64-pc-linux-gnu.
OK for trunk?
Thanks in advance, have a lovely night.
libstdc++-v3/include/bits/ptr_traits.h | 13 ++--
libstdc++-v3/include/bits/unique_ptr.h | 11 ++--
libstdc++-v3/include/std/memory | 6 ++
libstdc++-v3/include/std/version | 85 ++++++++++++++------------
4 files changed, 66 insertions(+), 49 deletions(-)
diff --git a/libstdc++-v3/include/bits/ptr_traits.h
b/libstdc++-v3/include/bits/ptr_traits.h
index dc42a743c96..f6cc6b65f93 100644
--- a/libstdc++-v3/include/bits/ptr_traits.h
+++ b/libstdc++-v3/include/bits/ptr_traits.h
@@ -34,12 +34,15 @@
#include <bits/move.h>
+/* Duplicate definition with unique_ptr.h. */
+#if __cplusplus > 202002L && defined(__cpp_constexpr_dynamic_alloc)
+# define __cpp_lib_constexpr_memory 202202L
+#elif __cplusplus > 201703L
+# include <concepts>
Including <concepts> is unrelated to the FTM, and should always be
done for >= C++17, but this change means it's not included for the
first block.
Please leave the #include with the _Safe_iterator_base declaration.
+# define __cpp_lib_constexpr_memory 201811L
+#endif
+
#if __cplusplus > 201703L
-#include <concepts>
-# ifndef __cpp_lib_constexpr_memory
-// Defined to a newer value in bits/unique_ptr.h for C++23
-# define __cpp_lib_constexpr_memory 201811L
-# endif
namespace __gnu_debug { struct _Safe_iterator_base; }
#endif
diff --git a/libstdc++-v3/include/bits/unique_ptr.h
b/libstdc++-v3/include/bits/unique_ptr.h
index c8daff41865..f0c6d2383b4 100644
--- a/libstdc++-v3/include/bits/unique_ptr.h
+++ b/libstdc++-v3/include/bits/unique_ptr.h
@@ -43,12 +43,11 @@
# endif
#endif
-#if __cplusplus > 202002L && __cpp_constexpr_dynamic_alloc
-# if __cpp_lib_constexpr_memory < 202202L
-// Defined with older value in bits/ptr_traits.h for C++20
-# undef __cpp_lib_constexpr_memory
-# define __cpp_lib_constexpr_memory 202202L
-# endif
+/* Duplicate definition with ptr_traits.h. */
+#if __cplusplus > 202002L && defined(__cpp_constexpr_dynamic_alloc)
+# define __cpp_lib_constexpr_memory 202202L
+#elif __cplusplus > 201703L
+# define __cpp_lib_constexpr_memory 201811L
#endif
namespace std _GLIBCXX_VISIBILITY(default)
diff --git a/libstdc++-v3/include/std/memory b/libstdc++-v3/include/std/memory
index 341f9857730..85c36d67ee1 100644
--- a/libstdc++-v3/include/std/memory
+++ b/libstdc++-v3/include/std/memory
@@ -91,6 +91,12 @@
# include <bits/uses_allocator_args.h>
#endif
+/* As a hack, we declare __cpp_lib_atomic_value_initialization here even though
+ we don't include the bit that actually declares it, for consistency. */
+#if !defined(__cpp_lib_atomic_value_initialization) && __cplusplus >= 202002L
+# define __cpp_lib_atomic_value_initialization 201911L
+#endif
+
#if __cplusplus >= 201103L && __cplusplus <= 202002L && _GLIBCXX_HOSTED
namespace std _GLIBCXX_VISIBILITY(default)
{
diff --git a/libstdc++-v3/include/std/version b/libstdc++-v3/include/std/version
index a19c39c6cdd..0239fcea813 100644
--- a/libstdc++-v3/include/std/version
+++ b/libstdc++-v3/include/std/version
@@ -85,6 +85,12 @@
#define __cpp_lib_transparent_operators 201510L
#define __cpp_lib_tuple_element_t 201402L
#define __cpp_lib_tuples_by_type 201304L
+#define __cpp_lib_robust_nonmodifying_seq_ops 201304L
Pleae keep them in alphabetical order (within their relevant
blocks/groups).
+
+#if _GLIBCXX_FLOAT_IS_IEEE_BINARY32 && _GLIBCXX_DOUBLE_IS_IEEE_BINARY64 \
+ && __SIZE_WIDTH__ >= 32
+# define __cpp_lib_to_chars 201611L
+#endif
#if _GLIBCXX_HOSTED
# define __cpp_lib_chrono_udls 201304L
@@ -92,7 +98,6 @@
# define __cpp_lib_generic_associative_lookup 201304L
# define __cpp_lib_make_unique 201304L
# define __cpp_lib_quoted_string_io 201304L
-# define __cpp_lib_robust_nonmodifying_seq_ops 201304L
# ifdef _GLIBCXX_HAS_GTHREADS
# define __cpp_lib_shared_timed_mutex 201402L
# endif
@@ -136,13 +141,13 @@
# define __cpp_lib_variant 202102L
#endif
#define __cpp_lib_void_t 201411L
-
-#if _GLIBCXX_HOSTED
+#define __cpp_lib_gcd 201606L
+#define __cpp_lib_gcd_lcm 201606L
+#define __cpp_lib_raw_memory_algorithms 201606L
#if __cplusplus == 201703L // N.B. updated value in C++20
# define __cpp_lib_array_constexpr 201803L
#endif
-#define __cpp_lib_boyer_moore_searcher 201603L
-#define __cpp_lib_chrono 201611L
+#define __cpp_lib_nonmember_container_access 201411L
#define __cpp_lib_clamp 201603L
#if __cplusplus == 201703L // N.B. updated value in C++20
# if _GLIBCXX_HAVE_IS_CONSTANT_EVALUATED
@@ -150,13 +155,16 @@
# define __cpp_lib_constexpr_string 201611L
# endif
#endif
+#define __cpp_lib_sample 201603L
+#define __cpp_lib_lcm 201606L
+
+#if _GLIBCXX_HOSTED
+#define __cpp_lib_boyer_moore_searcher 201603L
+#define __cpp_lib_chrono 201611L
#define __cpp_lib_enable_shared_from_this 201603L
#define __cpp_lib_execution 201902L // FIXME: should be 201603L
#define __cpp_lib_filesystem 201703L
-#define __cpp_lib_gcd 201606L
-#define __cpp_lib_gcd_lcm 201606L
#define __cpp_lib_hypot 201603L
-#define __cpp_lib_lcm 201606L
#define __cpp_lib_map_try_emplace 201411L
#define __cpp_lib_math_special_functions 201603L
#ifdef _GLIBCXX_HAS_GTHREADS
@@ -165,20 +173,13 @@
# define __cpp_lib_memory_resource 1
#endif
#define __cpp_lib_node_extract 201606L
-#define __cpp_lib_nonmember_container_access 201411L
#define __cpp_lib_parallel_algorithm 201603L
-#define __cpp_lib_raw_memory_algorithms 201606L
-#define __cpp_lib_sample 201603L
#ifdef _GLIBCXX_HAS_GTHREADS
# define __cpp_lib_scoped_lock 201703L
# define __cpp_lib_shared_mutex 201505L
#endif
#define __cpp_lib_shared_ptr_weak_type 201606L
#define __cpp_lib_string_view 201803L
-#if _GLIBCXX_FLOAT_IS_IEEE_BINARY32 && _GLIBCXX_DOUBLE_IS_IEEE_BINARY64 \
- && __SIZE_WIDTH__ >= 32
-# define __cpp_lib_to_chars 201611L
-#endif
#define __cpp_lib_unordered_map_try_emplace 201411L
#endif
@@ -224,7 +225,9 @@
#if __cpp_lib_concepts
# define __cpp_lib_make_obj_using_allocator 201811L
#endif
-#define __cpp_lib_optional 202106L
+#if __cplusplus <= 202002L // N.B. updated value in C++23
+# define __cpp_lib_optional 202106L
+#endif
#define __cpp_lib_remove_cvref 201711L
#if __has_builtin(__builtin_source_location)
# define __cpp_lib_source_location 201907L
@@ -243,9 +246,27 @@
#if __cpp_concepts >= 202002L && __cpp_constexpr >= 201811L
# define __cpp_lib_variant 202106L
#endif
-
-#if _GLIBCXX_HOSTED
#define __cpp_lib_array_constexpr 201811L
+#define __cpp_lib_constexpr_iterator 201811L
+#ifdef __cpp_lib_is_constant_evaluated
+# define __cpp_lib_constexpr_char_traits 201811L
+#endif
+#define __cpp_lib_interpolate 201902L
+#define __cpp_lib_constexpr_utility 201811L
+#define __cpp_lib_shift 201806L
+#if __cpp_lib_concepts
+# define __cpp_lib_move_iterator_concept 202207L
+# define __cpp_lib_ranges 202110L
+#endif
+#define __cpp_lib_constexpr_numeric 201911L
+#define __cpp_lib_constexpr_functional 201907L
+#define __cpp_lib_constexpr_algorithms 201806L
+#define __cpp_lib_constexpr_tuple 201811L
+#if __cplusplus <= 202002L // N.B. updated value in C++23
+# define __cpp_lib_constexpr_memory 201811L
+#endif // C++20
+
+#if _GLIBCXX_HOSTED
#define __cpp_lib_atomic_shared_ptr 201711L
#if defined _GLIBCXX_HAS_GTHREADS || defined _GLIBCXX_HAVE_LINUX_FUTEX
# define __cpp_lib_atomic_wait 201907L
@@ -256,16 +277,9 @@
// #undef __cpp_lib_chrono
// #define __cpp_lib_chrono 201907L
// FIXME: #define __cpp_lib_execution 201902L
-#define __cpp_lib_constexpr_algorithms 201806L
-#ifdef __cpp_lib_is_constant_evaluated
-# define __cpp_lib_constexpr_char_traits 201811L
-#endif
#define __cpp_lib_constexpr_complex 201711L
#define __cpp_lib_constexpr_dynamic_alloc 201907L
-#define __cpp_lib_constexpr_functional 201907L
-#define __cpp_lib_constexpr_iterator 201811L
-#define __cpp_lib_constexpr_memory 201811L
-#define __cpp_lib_constexpr_numeric 201911L
+#define __cpp_lib_constexpr_tuple 201811L
#ifdef __cpp_lib_is_constant_evaluated
# if _GLIBCXX_USE_CXX11_ABI
# define __cpp_lib_constexpr_string 201907L
@@ -273,13 +287,10 @@
# define __cpp_lib_constexpr_string 201811L
# endif
#endif
-#define __cpp_lib_constexpr_tuple 201811L
-#define __cpp_lib_constexpr_utility 201811L
#define __cpp_lib_constexpr_vector 201907L
#define __cpp_lib_erase_if 202002L
#define __cpp_lib_format 202106L
#define __cpp_lib_generic_unordered_lookup 201811L
-#define __cpp_lib_interpolate 201902L
#ifdef _GLIBCXX_HAS_GTHREADS
# define __cpp_lib_jthread 201911L
#endif
@@ -288,15 +299,10 @@
#endif
#define __cpp_lib_list_remove_return_type 201806L
#define __cpp_lib_polymorphic_allocator 201902L
-#if __cpp_lib_concepts
-# define __cpp_lib_ranges 202110L
-# define __cpp_lib_move_iterator_concept 202207L
-#endif
#if __cpp_lib_atomic_wait || _GLIBCXX_HAVE_POSIX_SEMAPHORE
# define __cpp_lib_semaphore 201907L
#endif
#define __cpp_lib_shared_ptr_arrays 201707L
-#define __cpp_lib_shift 201806L
#define __cpp_lib_smart_ptr_for_overwrite 202002L
# if _GLIBCXX_USE_CXX11_ABI
// Only supported with cxx11-abi
@@ -330,14 +336,17 @@
#define __cpp_lib_ranges_stride 202207L
#define __cpp_lib_ranges_cartesian_product 202207L
#define __cpp_lib_ranges_as_rvalue 202207L
-
-#if _GLIBCXX_HOSTED
-#define __cpp_lib_adaptor_iterator_pair_constructor 202106L
#if __cpp_constexpr_dynamic_alloc
-# define __cpp_lib_constexpr_bitset 202202L
+# if _GLIBCXX_HOSTED
+# define __cpp_lib_constexpr_bitset 202202L
+# endif
# undef __cpp_lib_constexpr_memory
# define __cpp_lib_constexpr_memory 202202L
#endif
+#define __cpp_lib_stdatomic_h 202011L
+
+#if _GLIBCXX_HOSTED
+#define __cpp_lib_adaptor_iterator_pair_constructor 202106L
#define __cpp_lib_ios_noreplace 202207L
#define __cpp_lib_move_only_function 202110L
#if __cpp_lib_span
