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[PATCH] PR libstdc++/88884 fix filesystem::absolute("//") for mingw


	PR libstdc++/88884
	* src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
	if the path is already absolute.
	[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
	[!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.

Tested x86_64-linux and x86_64-w64-mingw32, committed to trunk.


Attachment: patch.txt
Description: Text document


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