[gcc r16-4310] Daily bump.
GCC Administrator
gccadmin@gcc.gnu.org
Thu Oct 9 00:22:24 GMT 2025
https://gcc.gnu.org/g:954b679175190d06c0ceaf3aaea648c874497d71
commit r16-4310-g954b679175190d06c0ceaf3aaea648c874497d71
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date: Thu Oct 9 00:21:21 2025 +0000
Daily bump.
Diff:
---
contrib/ChangeLog | 17 ++++++
gcc/ChangeLog | 67 +++++++++++++++++++++
gcc/DATESTAMP | 2 +-
gcc/c-family/ChangeLog | 6 ++
gcc/c/ChangeLog | 23 ++++++++
gcc/cp/ChangeLog | 7 +++
gcc/fortran/ChangeLog | 32 +++++++++++
gcc/jit/ChangeLog | 33 +++++++++++
gcc/testsuite/ChangeLog | 87 ++++++++++++++++++++++++++++
libcpp/ChangeLog | 13 +++++
libstdc++-v3/ChangeLog | 150 ++++++++++++++++++++++++++++++++++++++++++++++++
11 files changed, 436 insertions(+), 1 deletion(-)
diff --git a/contrib/ChangeLog b/contrib/ChangeLog
index 2938e98a104e..55737ced848a 100644
--- a/contrib/ChangeLog
+++ b/contrib/ChangeLog
@@ -1,3 +1,20 @@
+2025-10-08 Jakub Jelinek <jakub@redhat.com>
+
+ * unicode/README: Add HangulSyllableType.txt file to the
+ list as newest utf8_gen.py from glibc now needs it. Adjust
+ git commit hash and change unicode 16 version to 17.
+ * unicode/from_glibc/utf8_gen.py: Updated from glibc.
+ * unicode/DerivedCoreProperties.txt: Updated from Unicode 17.0.0.
+ * unicode/emoji-data.txt: Likewise.
+ * unicode/PropList.txt: Likewise.
+ * unicode/GraphemeBreakProperty.txt: Likewise.
+ * unicode/DerivedNormalizationProps.txt: Likewise.
+ * unicode/NameAliases.txt: Likewise.
+ * unicode/UnicodeData.txt: Likewise.
+ * unicode/EastAsianWidth.txt: Likewise.
+ * unicode/DerivedGeneralCategory.txt: Likewise.
+ * unicode/HangulSyllableType.txt: New file.
+
2025-10-05 Mark Wielaard <mark@klomp.org>
* gcc-changelog/git_update_version.py (ignored_commits): Add
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0dec12e27852..19a17a393597 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,70 @@
+2025-10-08 Antoni Boucher <bouanto@zoho.com>
+
+ * configure: Regenerate.
+
+2025-10-08 Trevor Gross <tmgross@umich.edu>
+
+ PR target/115054
+ * config/i386/i386.cc (function_arg_ms_64,
+ function_value_ms_64): Pass and return _Float16 in vector
+ registers on Windows.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/110223
+ PR tree-optimization/122128
+ * tree-vect-patterns.cc (vect_recog_bool_pattern): Add
+ compensation for mixed mask/data bitwise operations.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ * tree-vect-patterns.cc (integer_type_for_mask): Only
+ reject vect_external_defs.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ * doc/tm.texi.in (JIT Language and ABI): Add menu item.
+ * doc/tm.texi: Re-generate.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/110223
+ * tree-vect-patterns.cc (vect_recog_bool_pattern): Fix
+ mistakes in the store-from-mask bool pattern. Add
+ required mask conversions.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/105490
+ * tree-vect-patterns.cc (build_mask_conversion): Move earlier.
+ (vect_convert_mask_for_vectype): Likewise.
+ (vect_recog_bool_pattern): Remove redundant truth type
+ construction. Add missing possibly required mask conversion.
+
+2025-10-08 Antoni Boucher <bouanto@zoho.com>
+
+ PR jit/112466
+ * Makefile.in (tm_jit_file_list, tm_jit_include_list, TM_JIT_H,
+ JIT_TARGET_DEF, JIT_TARGET_H, JIT_TARGET_OBJS): New variables.
+ (tm_jit.h, cs-tm_jit.h, jit/jit-target-hooks-def.h,
+ s-jit-target-hooks-def-h, default-jit.o): New rules.
+ (s-tm-texi): Also check timestamp on jit-target.def.
+ (generated_files): Add TM_JIT_H and jit/jit-target-hooks-def.h.
+ (build/genhooks.o): Also depend on JIT_TARGET_DEF.
+ * config.gcc (tm_jit_file, jit_target_objs, target_has_targetjitm):
+ New variables.
+ * config/i386/t-i386 (i386-jit.o): New rule.
+ * configure: Regenerate.
+ * configure.ac (tm_jit_file_list, tm_jit_include_list,
+ jit_target_objs): Add substitutes.
+ * doc/tm.texi: Regenerate.
+ * doc/tm.texi.in (targetjitm): Document.
+ (target_has_targetjitm): Document.
+ * genhooks.cc: Include jit/jit-target.def.
+ * config/default-jit.cc: New file.
+ * config/i386/i386-jit.cc: New file.
+ * config/i386/i386-jit.h: New file.
+
2025-10-07 Alfie Richards <alfie.richards@arm.com>
* doc/tm.texi: Regenerate.
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index b95af03f6e9b..80c58c12bccf 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20251008
+20251009
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index 465ab18c7d82..1142d0640640 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,9 @@
+2025-10-08 Jakub Jelinek <jakub@redhat.com>
+
+ PR c/122188
+ * c-gimplify.cc (c_gimplify_expr): Gimplify CALL_EXPR_ARG (*expr_p, 0)
+ instead of calling save_expr on it.
+
2025-10-04 Jakub Jelinek <jakub@redhat.com>
PR c++/114457
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index 5b6a56e3c421..241e71bf25ce 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,26 @@
+2025-10-08 Joseph Myers <josmyers@redhat.com>
+
+ * c-typeck.cc (in_generic, save_maybe_used, restore_maybe_used):
+ New.
+ (mark_decl_used, record_maybe_used_decl, pop_maybe_used): Use
+ in_generic.
+ (struct maybe_used_decl): Move to c-tree.h.
+ * c-tree.h (struct maybe_used_decl): Move from c-typeck.cc.
+ (in_generic, save_maybe_used, restore_maybe_used): Declare.
+ * c-parser.cc (c_parser_generic_selection): Increment and
+ decrement in_generic. Use pop_maybe_used, save_maybe_used and
+ restore_maybe_used.
+
+2025-10-08 Martin Uecker <uecker@tugraz.at>
+
+ * c-parser.cc (c_parser_generic_selection): Change
+ error_at to pedwarn_c23.
+
+2025-10-08 Alfie Richards <alfie.richards@arm.com>
+
+ PR target/122180
+ * c-decl.cc (pushdecl): Add TARGET_HAS_FMV_TARGET_ATTRIBUTE check.
+
2025-10-07 Joseph Myers <josmyers@redhat.com>
PR c/26581
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 26434756b336..5099caab06d1 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,10 @@
+2025-10-08 Jason Merrill <jason@redhat.com>
+
+ * init.cc (build_new_1): Also clobber for non-placement new.
+ Only loop clobber in constexpr.
+ * expr.cc (wrap_with_if_consteval): New.
+ * cp-tree.h (wrap_with_if_consteval): Declare.
+
2025-10-07 Jason Merrill <jason@redhat.com>
* init.cc (build_new_1): Clobber a constant-bound array as a whole.
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index b57bfb9d513a..08bc1b3d8bf0 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,35 @@
+2025-10-08 Harald Anlauf <anlauf@gmx.de>
+
+ PR fortran/49111
+ * decl.cc (verify_bind_c_sym): Modify condition for generation of
+ accessibility warning, and adjust warning message.
+
+2025-10-08 Paul Thomas <pault@gcc.gnu.org>
+
+ PR fortran/93175
+ PR fortran/102240
+ PR fortran/102686
+ * array.cc (match_array_element_spec): For pdt templates, call
+ gfc_correct_parm_expr to elimante extraneous symbols from the
+ bound expressions.
+ * decl.cc (correct_parm_expr, gfc_correct_parm_expr): New fcns
+ that remove symbols that are not PDT parameters from the type
+ specification expressions.
+ (insert_parameter_exprs): Process function symbols as if they
+ are variables in the substitution with parameter expressions.
+ (gfc_get_pdt_instance): Make sure that the parameter list of
+ PDT components is updated as the instance is built. Move the
+ construction of pdt_strings down a bit in the function and
+ remove the tie up with pdt_arrays.
+ * gfortran.h: Add prototype for gfc_correct_parm_expr.
+ * resolve.cc (resolve_component): Skip testing for constant
+ specification expressions in pdt_template component string
+ lengths and pdt_strings.
+ * trans-array.cc (structure_alloc_comps): Remove testing for
+ deferred parameters and instead make sure that components of
+ PDT type have parameters substituted with the parameter exprs
+ of the enclosing PDT.
+
2025-10-07 Paul Thomas <pault@gcc.gnu.org>
PR fortran/102901
diff --git a/gcc/jit/ChangeLog b/gcc/jit/ChangeLog
index 7e31500bae0b..1577ea06aac5 100644
--- a/gcc/jit/ChangeLog
+++ b/gcc/jit/ChangeLog
@@ -1,3 +1,36 @@
+2025-10-08 Antoni Boucher <bouanto@zoho.com>
+
+ PR jit/112466
+ * Make-lang.in (JIT_OBJS): New variable.
+ * jit-playback.cc (replay): Include jit-target.h and initialize
+ target.
+ * jit-playback.h (class populate_target_info): New class.
+ * jit-recording.cc (recording::context::populate_target_info): New
+ method.
+ * jit-recording.h (recording::context::populate_target_info): New
+ method.
+ (recording::context::m_populated_target_info): New field.
+ * libgccjit.cc: Include jit-target.h.
+ (struct gcc_jit_target_info): New struct.
+ (gcc_jit_context_get_target_info, gcc_jit_target_info_release,
+ gcc_jit_target_info_cpu_supports, gcc_jit_target_info_arch,
+ gcc_jit_target_info_supports_target_dependent_type): New functions.
+ * libgccjit.h (gcc_jit_context_get_target_info,
+ gcc_jit_target_info_release, gcc_jit_target_info_cpu_supports,
+ gcc_jit_target_info_arch,
+ gcc_jit_target_info_supports_target_dependent_type):
+ New functions.
+ * libgccjit.map (LIBGCCJIT_ABI_35): New ABI tag.
+ * docs/topics/compilation.rst: Add documentation for the
+ functions gcc_jit_context_get_target_info, gcc_jit_target_info_release,
+ gcc_jit_target_info_cpu_supports, gcc_jit_target_info_arch,
+ gcc_jit_target_info_supports_target_dependent_type.
+ * docs/topics/compatibility.rst (LIBGCCJIT_ABI_35): New ABI tag.
+ * jit-target-def.h: New file.
+ * jit-target.cc: New file.
+ * jit-target.def: New file.
+ * jit-target.h: New file.
+
2025-10-07 Jonathan Wakely <jwakely@redhat.com>
* docs/_build/texinfo/libgccjit.texi: Fix spelling.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index ff10abf7b227..3b6a2744e0b4 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,90 @@
+2025-10-08 Joseph Myers <josmyers@redhat.com>
+
+ * gcc.dg/c11-generic-4.c, gcc.dg/c23-generic-5.c,
+ gcc.dg/c2y-generic-5.c: New tests.
+
+2025-10-08 Harald Anlauf <anlauf@gmx.de>
+
+ PR fortran/49111
+ * gfortran.dg/binding_label_tests_9.f03: Adjust test.
+ * gfortran.dg/module_private_2.f90: Likewise.
+ * gfortran.dg/public_private_module_2.f90: Likewise.
+ * gfortran.dg/binding_label_tests_35.f90: New test.
+
+2025-10-08 Martin Uecker <uecker@tugraz.at>
+
+ * gcc.dg/c11-generic-2.c: Adapt error message.
+ * gcc.dg/c2y-generic-3.c: Adapt test.
+ * gcc.dg/c2y-generic-4.c: New test.
+
+2025-10-08 Jakub Jelinek <jakub@redhat.com>
+
+ * c-c++-common/cpp/named-universal-char-escape-1.c: Add test for
+ \N{CJK UNIFIED IDEOGRAPH-3340E}.
+
+2025-10-08 Jason Merrill <jason@redhat.com>
+
+ * g++.dg/analyzer/new-2.C: Adjust diags.
+ * g++.dg/analyzer/noexcept-new.C: Adjust diags.
+ * g++.dg/warn/Warray-bounds-23.C: Add warnings.
+ * g++.dg/warn/Warray-bounds-24.C: Add warnings.
+ * g++.dg/cpp26/constexpr-new4a.C: New test.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/110223
+ PR tree-optimization/122128
+ * gcc.dg/vect/vect-bool-2.c: New testcase.
+ * gcc.dg/vect/vect-bool-cmp-3.c: Likewise.
+ * gcc.dg/vect/vect-bool-cmp-4.c: Likewise.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ PR testsuite/120100
+ * g++.dg/vect/pr64410.cc: Adjust.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ PR target/120091
+ * gcc.target/i386/pr119919.c: Only check for vectorization
+ when !ia32.
+
+2025-10-08 Alfie Richards <alfie.richards@arm.com>
+
+ PR target/122180
+ * gcc.target/i386/pr122180.c: New test.
+
+2025-10-08 Jakub Jelinek <jakub@redhat.com>
+
+ PR c/122188
+ * c-c++-common/pr122188.c: New test.
+
+2025-10-08 Jakub Jelinek <jakub@redhat.com>
+
+ PR tree-optimization/121206
+ * gcc.dg/pr121987.c (main): Use unsigned long long type for e instead
+ of unsigned long and use ULL suffix on the initializer.
+
+2025-10-08 Paul Thomas <pault@gcc.gnu.org>
+
+ PR fortran/93175
+ PR fortran/102240
+ PR fortran/102686
+ * gfortran.dg/pdt_55.f03: New test.
+
+2025-10-08 Richard Biener <rguenther@suse.de>
+
+ PR tree-optimization/105490
+ * gcc.dg/vect/vect-cond-14.c: New testcase.
+
+2025-10-08 Antoni Boucher <bouanto@zoho.com>
+
+ PR jit/112466
+ * jit.dg/all-non-failing-tests.h: Mention
+ test-target-info.c.
+ * jit.dg/test-target-info.c: New test.
+ * jit.dg/test-error-target-info.c: New test.
+
2025-10-07 Joseph Myers <josmyers@redhat.com>
PR c/26581
diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index 4a05748a368d..43d3f39dd086 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,16 @@
+2025-10-08 Jakub Jelinek <jakub@redhat.com>
+
+ * makeucnid.cc (write_copyright): Adjust copyright year.
+ * makeuname2c.cc (generated_ranges): Adjust end points for a couple
+ of ranges based on UnicodeData.txt Last changes and add a whole new
+ CJK UNIFIED IDEOGRAPH- entry. None of these changes are in the 4-8
+ table, but clearly it has just been forgotten.
+ (write_copyright): Adjust copyright year.
+ (write_dict): Fix up condition when to print semicolon.
+ * generated_cpp_wcwidth.h: Regenerate.
+ * ucnid.h: Regenerate.
+ * uname2c.h: Regenerate.
+
2025-09-23 David Malcolm <dmalcolm@redhat.com>
PR diagnostics/121986
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index e8f244b9364e..5eeb4cffdc22 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,153 @@
+2025-10-08 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/manual/status_cxx2017.xml: Replace broken link to PSTL
+ upstream.
+ * doc/xml/manual/status_cxx2020.xml: Likewise.
+ * doc/html/manual/status.html: Regenerate.
+
+2025-10-08 Jonathan Wakely <jwakely@redhat.com>
+
+ * config/cpu/i486/atomicity.h: Removed.
+
+2025-10-08 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/122172
+ * config/cpu/cris/atomicity.h: Removed.
+
+2025-10-08 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/indirect.h (indirect::operator=(indirect&&)):
+ Move assign allocator when POCMA is true.
+ (polymorphic::operator=(polymorphic&&)): Likewise.
+ * testsuite/std/memory/indirect/copy.cc: Remove constexpr from
+ functions that use tracker_allocator. Add test_constexpr().
+ * testsuite/std/memory/indirect/copy_alloc.cc: Remove constexpr
+ from all functions and remove static_assert.
+ * testsuite/std/memory/indirect/ctor.cc: Do not use
+ scoped_allocator_adaptor during constant evaluation.
+ * testsuite/std/memory/indirect/move.cc: Remove constexpr from
+ functions that use tracker_allocator. Add test_constexpr().
+ * testsuite/std/memory/indirect/move_alloc.cc: Remove constexpr
+ from all functions and remove static_assert.
+ * testsuite/std/memory/indirect/relops.cc: Invoke lambda in
+ static_assert.
+ * testsuite/std/memory/polymorphic/copy.cc: Remove constexpr
+ from functions that use tracker_allocator. Add test_constexpr().
+ * testsuite/std/memory/polymorphic/copy_alloc.cc: Remove
+ constexpr from all functions and remove static_assert.
+ * testsuite/std/memory/polymorphic/ctor.cc: Do not use
+ scoped_allocator_adaptor during constant evaluation.
+ * testsuite/std/memory/polymorphic/ctor_poly.cc: Likewise.
+ * testsuite/std/memory/polymorphic/move.cc: Remove constexpr
+ from functions that use tracker_allocator. Add test_constexpr().
+ * testsuite/std/memory/polymorphic/move_alloc.cc: Remove
+ constexpr from all functions and remove static_assert.
+ * testsuite/util/testsuite_allocator.h (tracker_allocator):
+ Remove redundant 'inline' from friend.
+ (uneq_allocator): Make all functions constexpr.
+ (uneq_allocator::base, uneq_allocator::swap_base): Remove.
+ (uneq_allocator::~uneq_allocator): Remove.
+ (uneq_allocator::allocate, uneq_allocator::deallocate): Do not
+ use map of allocations during constant evaluation.
+ (propagating_allocator): Make all functions constexpr.
+ (propagating_allocator::base): Remove.
+ (propagating_allocator::swap_base): Simplify.
+ (ExplicitConsAlloc, CustomPointerAlloc, NullablePointer): Add
+ constexpr to all functions.
+
+2025-10-08 Jakub Jelinek <jakub@redhat.com>
+
+ * include/bits/unicode-data.h: Regenerate.
+ * testsuite/ext/unicode/properties.cc: Test __is_extended_pictographic
+ on U+1F004 rather than U+1F000.
+
+2025-10-08 Tomasz Kamiński <tkaminsk@redhat.com>
+
+ * include/bits/chrono_io.h (_ChronoData::_M_fill_day): Replace
+ '%' by '/'.
+
+2025-10-08 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/std/time/format/format.cc: Include <vector>.
+
+2025-10-08 Luc Grosheintz <luc.grosheintz@gmail.com>
+
+ PR libstdc++/110352
+ * include/std/mdspan (submdspan_mapping_result): New class.
+ * src/c++23/std.cc.in (submdspan_mapping_result): Add.
+
+2025-10-08 Luc Grosheintz <luc.grosheintz@gmail.com>
+
+ PR libstdc++/110352
+ * include/std/mdspan (full_extent_t): New class.
+ * src/c++23/std.cc.in (full_extent_t): Add.
+
+2025-10-08 Luc Grosheintz <luc.grosheintz@gmail.com>
+
+ PR libstdc++/110352
+ * include/bits/version.def (submdspan): New internal macro.
+ * include/bits/version.h: Regenerate.
+ * include/std/mdspan (strided_slice): New class.
+ * src/c++23/std.cc.in (strided_slice): Add.
+ * testsuite/23_containers/mdspan/submdspan/strided_slice.cc: New test.
+ * testsuite/23_containers/mdspan/submdspan/strided_slice_neg.cc: New test.
+
+2025-10-08 Luc Grosheintz <luc.grosheintz@gmail.com>
+
+ * include/std/mdspan (__mdspan::__index_type_cast): Optimize by
+ skipping a __glibcxx_assert if it's know at compile-time.
+ (std::layout_left_padded, std::layout_righ_padded): Reorder
+ is_always_strided and is_unique member functions.
+ * testsuite/23_containers/mdspan/int_like.h: Rename _M_i to
+ value.
+
+2025-10-08 Luc Grosheintz <luc.grosheintz@gmail.com>
+
+ PR libstdc++/110352
+ * include/std/mdspan (_RightPaddedIndices): Traits for right
+ padded layouts.
+ (layout_right::mapping::mapping) New overload for right padded
+ layouts.
+ (layout_right_padded): Add implementation.
+ * src/c++23/std.cc.in (layout_right_padded): Add.
+ * testsuite/23_containers/mdspan/layouts/ctors.cc: Update
+ test for right padded layouts.
+ * testsuite/23_containers/mdspan/layouts/empty.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/mapping.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/padded.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/padded_neg.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/padded_traits.h: Ditto.
+
+2025-10-08 Luc Grosheintz <luc.grosheintz@gmail.com>
+
+ PR libstdc++/110352
+ * include/bits/version.def (padded_layouts): Add new internal
+ feature testing macro.
+ * include/bits/version.h: Regenerate.
+ * include/std/mdspan (__fwd_prod): New overload.
+ (layout_left_padded): Add declaration and implementation.
+ (layout_right_padded): Add declaration only.
+ (layout_left::mapping::mapping): New overload for left
+ padded mappings.
+ (__index_type_cast): New function that performs a checked cast
+ to index_type.
+ (__is_left_padded_mapping): New concept.
+ (__is_right_padded_mapping): Ditto.
+ (__standardized_mapping): Recognize left and right padded
+ mappings.
+ (_LeftPaddedIndices): Traits for left padded details.
+ (_PaddedStorage): New class for implementing padded layouts.
+ * src/c++23/std.cc.in (layout_left_padded): Add.
+ * testsuite/23_containers/mdspan/layouts/class_mandate_neg.cc:
+ Refactor and add tests for layout_left_padded.
+ * testsuite/23_containers/mdspan/layouts/ctors.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/empty.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/mapping.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/padded.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/padded_neg.cc: Ditto.
+ * testsuite/23_containers/mdspan/layouts/padded_traits.h: New
+ traits.
+
2025-10-07 Jonathan Wakely <jwakely@redhat.com>
* configure.host: Fix spelling in comment.
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