Encountered what appears to be the same problem on Fedora 28.
$ inkscape --export-area-page --export-pdf=Logo.pdf --without-gui Logo.svg /usr/include/c++/8/bits/stl_vector.h:950: std::vector<_Tp, _Alloc>::const_reference std::vector<_Tp, _Alloc>::operator[](std::vector<_Tp, _Alloc>::size_type) const [with _Tp = Inkscape::Text::Layout::Character; _Alloc = std::allocator<Inkscape::Text::Layout::Character>; std::vector<_Tp, _Alloc>::const_reference = const Inkscape::Text::Layout::Character&; std::vector<_Tp, _Alloc>::size_type = long unsigned int]: Assertion '__builtin_expect(__n < this->size(), true)' failed.
Emergency save activated! Emergency save completed. Inkscape will close now.
$ inkscape --version Inkscape 0.92.3 (2405546, 2018-03-11)
AfC
Encountered what appears to be the same problem on Fedora 28.
$ inkscape --export-area-page --export- pdf=Logo. pdf --without-gui Logo.svg c++/8/bits/ stl_vector. h:950: std::vector<_Tp, _Alloc> ::const_ reference std::vector<_Tp, _Alloc> ::operator[ ](std:: vector< _Tp, _Alloc>::size_type) const [with _Tp = Inkscape: :Text:: Layout: :Character; _Alloc = std::allocator< Inkscape: :Text:: Layout: :Character> ; std::vector<_Tp, _Alloc> ::const_ reference = const Inkscape: :Text:: Layout: :Character& ; std::vector<_Tp, _Alloc>::size_type = long unsigned int]: Assertion '__builtin_ expect( __n < this->size(), true)' failed.
/usr/include/
Emergency save activated!
Emergency save completed. Inkscape will close now.
$ inkscape --version
Inkscape 0.92.3 (2405546, 2018-03-11)
AfC