Jonathan Wakely 50e248f0c8 PR libstdc++/82777 fix path normalization for dot-dot
PR libstdc++/82777
	* src/filesystem/std-path.cc (path::lexically_normal): Remove dot-dot
	elements correctly.
	* testsuite/27_io/filesystem/path/generation/normal.cc: Add testcase.
	* testsuite/util/testsuite_fs.h (compare_paths): Improve exception
	text.

From-SVN: r254317
2017-11-01 17:09:14 +00:00
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