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from 87f354ca753 cobol: Eliminate a run-time structure type that is no longer used. new cdd015c4ddb c++: Warn on #undef/#define of remaining cpp.predefined mac [...] new 4bed19cf617 c++: Fix default argument parsing in non-comma variadic met [...] new 828c48f0680 c++: Implement C++20 P1766R1 - Mitigating minor modules mal [...] new 91b5fc4ae2e c++: Add testcases for the defarg part of P1766R1 [PR121552] new 9a8b436b005 c++: Implement __builtin_structured_binding_size trait

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Summary of changes: gcc/c-family/c-cppbuiltin.cc | 70 ++++++++++++-- gcc/c-family/c.opt | 4 + gcc/c-family/c.opt.urls | 3 + gcc/c/c-decl.cc | 5 +- gcc/cp/constraint.cc | 3 + gcc/cp/cp-trait.def | 1 + gcc/cp/cp-tree.h | 1 + gcc/cp/decl.cc | 100 +++++++++++++++++-- gcc/cp/lex.cc | 41 ++++---- gcc/cp/parser.cc | 6 +- gcc/cp/pt.cc | 7 ++ gcc/cp/semantics.cc | 59 ++++++++---- gcc/doc/extend.texi | 6 ++ gcc/doc/invoke.texi | 24 ++++- gcc/testsuite/c-c++-common/cpp/pr92296-2.c | 12 +-- gcc/testsuite/g++.dg/DRs/dr2581-1.C | 106 +++++++++++++++++++++ gcc/testsuite/g++.dg/DRs/dr2581-2.C | 106 +++++++++++++++++++++ gcc/testsuite/g++.dg/abi/anon2.C | 1 + gcc/testsuite/g++.dg/abi/anon3.C | 1 + gcc/testsuite/g++.dg/cpp26/expansion-stmt15.C | 2 +- gcc/testsuite/g++.dg/cpp2a/typedef1.C | 94 ++++++++++++++++++ gcc/testsuite/g++.dg/debug/dwarf2/typedef5.C | 2 +- gcc/testsuite/g++.dg/ext/anon-struct9.C | 2 +- .../g++.dg/ext/builtin-structured-binding-size1.C | 56 +++++++++++ .../g++.dg/ext/builtin-structured-binding-size2.C | 51 ++++++++++ .../g++.dg/ext/builtin-structured-binding-size3.C | 51 ++++++++++ .../g++.dg/ext/builtin-structured-binding-size4.C | 32 +++++++ gcc/testsuite/g++.dg/ext/visibility/anon11.C | 1 + gcc/testsuite/g++.dg/inherit/typeinfo1.C | 2 + gcc/testsuite/g++.dg/lto/pr69137_0.C | 2 +- gcc/testsuite/g++.dg/modules/default-arg-4_a.C | 19 ++++ gcc/testsuite/g++.dg/modules/default-arg-4_b.C | 36 +++++++ gcc/testsuite/g++.dg/modules/default-arg-5_a.C | 23 +++++ gcc/testsuite/g++.dg/modules/default-arg-5_b.C | 35 +++++++ gcc/testsuite/g++.dg/other/anon8.C | 1 + gcc/testsuite/g++.dg/parse/ctor2.C | 1 + gcc/testsuite/g++.dg/parse/defarg20.C | 79 +++++++++++++++ gcc/testsuite/g++.dg/parse/defarg21.C | 38 ++++++++ gcc/testsuite/g++.dg/template/defarg24.C | 37 +++++++ gcc/testsuite/g++.dg/template/pr84973-2.C | 1 + gcc/testsuite/g++.dg/template/pr84973-3.C | 1 + gcc/testsuite/g++.dg/template/pr84973.C | 1 + gcc/testsuite/g++.old-deja/g++.oliva/linkage1.C | 1 + libcpp/directives.cc | 18 +++- libcpp/include/cpplib.h | 19 ++++ libcpp/init.cc | 11 +++ libcpp/macro.cc | 16 +++- 47 files changed, 1107 insertions(+), 81 deletions(-) create mode 100644 gcc/testsuite/g++.dg/DRs/dr2581-1.C create mode 100644 gcc/testsuite/g++.dg/DRs/dr2581-2.C create mode 100644 gcc/testsuite/g++.dg/cpp2a/typedef1.C create mode 100644 gcc/testsuite/g++.dg/ext/builtin-structured-binding-size1.C create mode 100644 gcc/testsuite/g++.dg/ext/builtin-structured-binding-size2.C create mode 100644 gcc/testsuite/g++.dg/ext/builtin-structured-binding-size3.C create mode 100644 gcc/testsuite/g++.dg/ext/builtin-structured-binding-size4.C create mode 100644 gcc/testsuite/g++.dg/modules/default-arg-4_a.C create mode 100644 gcc/testsuite/g++.dg/modules/default-arg-4_b.C create mode 100644 gcc/testsuite/g++.dg/modules/default-arg-5_a.C create mode 100644 gcc/testsuite/g++.dg/modules/default-arg-5_b.C create mode 100644 gcc/testsuite/g++.dg/parse/defarg20.C create mode 100644 gcc/testsuite/g++.dg/parse/defarg21.C create mode 100644 gcc/testsuite/g++.dg/template/defarg24.C