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from c4deccd4465 rs6000: Remove duplicate expression [PR106907] new f80a8b42296 libstdc++: Also use sendfile for big files new d87caacf8e2 libstdc++: Use copy_file_range for filesystem::copy_file new 07a0e108247 libstdc++: Make std::filesystem::copy_file work for procfs [...] new 7e8e071c4b6 libstdc++: Use close-on-exec for file descriptors in filesy [...]

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Summary of changes: libstdc++-v3/acinclude.m4 | 71 +++++--- libstdc++-v3/config.h.in | 6 + libstdc++-v3/configure | 189 +++++++++++++++++---- libstdc++-v3/src/filesystem/ops-common.h | 153 ++++++++++++----- .../filesystem/operations/copy_file_108178.cc | 33 ++++ 5 files changed, 359 insertions(+), 93 deletions(-) create mode 100644 libstdc++-v3/testsuite/27_io/filesystem/operations/copy_file_108178.cc