Comment 68 for bug 1768875

Same for me on fedora 29 :
/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.

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/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.
[1] 17312 abort (core dumped) inkscape