[Dev-luatex] luatex segfault with huge romannumeral overfull

Hi, I happened to find that luatex and luahbtex crash: $ luatex \\romannumeral2000000000\\end This is LuaTeX, Version 1.13.0 (TeX Live 2021/dev) restricted system commands enabled. Segmentation fault: 11 (I'm using self-build from current TL svn.) Best, Hironobu