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The class API provides no way to modify the members, so we can share them between copies of the same object. Copying becomes a simple reference count update, which doesn't throw. Also adjust the what() string to allow distinguishing between an empty path passed to the constructor, and no path. PR libstdc++/83306 * include/bits/fs_path.h (filesystem_error): Move data members into pimpl class owned by shared_ptr. Remove inline definitions of member functions. * src/filesystem/std-path.cc (filesystem_error::_Impl): Define. (filesystem_error): Define member functions. * testsuite/27_io/filesystem/filesystem_error/cons.cc: New test. * testsuite/27_io/filesystem/filesystem_error/copy.cc: New test. From-SVN: r266565 |
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