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from 2d0ecf5 PR libstdc++/77537 Implement LWG 2729 for pair. * include/ [...] new ec51a84 Implement LWG 2729 for tuple. * include/std/tuple (_Tuple_i [...] new 4be8c60 PR libstdc++/77288 * include/std/optional (__is_optional_im [...]

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Summary of changes: libstdc++-v3/ChangeLog | 42 +++ libstdc++-v3/include/std/optional | 62 ++-- libstdc++-v3/include/std/tuple | 96 ++++- libstdc++-v3/testsuite/20_util/optional/77288.cc | 406 +++++++++++++++++++++ .../testsuite/20_util/optional/cons/value.cc | 12 +- .../20_util/tuple/element_access/get_neg.cc | 2 +- .../testsuite/20_util/tuple/tuple_traits.cc | 244 +++++++++++++ 7 files changed, 819 insertions(+), 45 deletions(-) create mode 100644 libstdc++-v3/testsuite/20_util/optional/77288.cc create mode 100644 libstdc++-v3/testsuite/20_util/tuple/tuple_traits.cc