https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90299
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Thu May 16 23:09:51 2019 New Revision: 271302 URL: https://gcc.gnu.org/viewcvs?rev=271302&root=gcc&view=rev Log: PR libstdc++/90299 make filesystem::absolute overloads consistent In this implementation it is an error to pass the empty path to absolute, because the empty path doesn't represent any file in the filesystem so the function cannot meet its postcondition. Currently the absolute(const path&, error_code&) overload reports an error for the empty path, but using errc::no_such_file_or_directory, and the other overload does not report an error. This patch makes them consistntly report an errc::invalid_argument error for the empty path. Backport from mainline 2019-05-04 Jonathan Wakely <jwak...@redhat.com> PR libstdc++/90299 * src/filesystem/std-ops.cc (absolute(const path&)): Report an error if the argument is an empty path. (absolute(const path&, error_code&)): Use invalid_argument as error code instead of no_such_file_or_directory. * testsuite/27_io/filesystem/operations/absolute.cc: Check handling of non-existent paths and empty paths with both overloads of absolute. Modified: branches/gcc-8-branch/libstdc++-v3/ChangeLog branches/gcc-8-branch/libstdc++-v3/src/filesystem/std-ops.cc branches/gcc-8-branch/libstdc++-v3/testsuite/27_io/filesystem/operations/absolute.cc
