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from 46149296b09 PR c++/90548 - ICE with generic lambda and empty pack. * [...] new f398ad4d9c7 Fix C++14-only code in testsuite utility new b4d3846629f PR libstdc++/90634 reduce allocations in filesystem::path c [...]

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Summary of changes: libstdc++-v3/ChangeLog | 21 ++++++ libstdc++-v3/include/experimental/bits/fs_path.h | 5 +- libstdc++-v3/src/filesystem/path.cc | 51 +++++++++++++- .../27_io/filesystem/path/construct/90634.cc | 78 ++++++++++++++++++++++ .../filesystem/path/construct/90634.cc | 75 +++++++++++++++++++++ libstdc++-v3/testsuite/util/testsuite_fs.h | 4 +- 6 files changed, 228 insertions(+), 6 deletions(-) create mode 100644 libstdc++-v3/testsuite/27_io/filesystem/path/construct/90634.cc create mode 100644 libstdc++-v3/testsuite/experimental/filesystem/path/construct/90634.cc