[Bug libstdc++/90646] std::filesystem::absolute( "yourpathhere" ) segfaults

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90646

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It could also be Bug 90557 (which is fixed in the gcc-9-branch but present in
the gcc 9.1.0 release) but the symptoms don't look similar.