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Manjaro Linuxにおいて4月のアップデート移行日本語文書でNumber too bigエラーが出るという症状が続いています。
公式のほうで問い合わせましたが、アップストリームに投げるようにとのことでした。

次のようなドキュメントにおいて

\documentclass[a4paper]{ltjsarticle}
\usepackage{luatexja-fontspec}

\setmainjfont[BoldFont=Migu 1C]{Migu 1C}

\begin{document}

このようなエラーになります。

This is LuaTeX, Version 1.0.4 (TeX Live 2017/Arch Linux)
restricted system commands enabled.
(./test.tex
LaTeX2e <2017-04-15>
(using write cache: /home/haruka/.texlive/texmf-var/luatex-cache/generic)(using
read cache: /var/lib/texmf/luatex-cache/generic /home/haruka/.texlive/texmf-va
r/luatex-cache/generic)
luaotfload | main : initialization completed in 0.101 seconds
Babel <3.18> and hyphenation patterns for 1 language(s) loaded.
(/usr/share/texmf-dist/tex/luatex/luatexja/ltjsarticle.cls
Document Class: ltjsarticle 2018/01/14 ltjsclasses
(/usr/share/texmf-dist/tex/luatex/luatexja/luatexja.sty
(/usr/share/texmf-dist/tex/luatex/luatexja/luatexja-core.sty
(/usr/share/texmf-dist/tex/luatex/luatexbase/luatexbase.sty
(/usr/share/texmf-dist/tex/luatex/ctablestack/ctablestack.sty))
(/usr/share/texmf-dist/tex/generic/oberdiek/ltxcmds.sty)
(/usr/share/texmf-dist/tex/generic/oberdiek/pdftexcmds.sty
(/usr/share/texmf-dist/tex/generic/oberdiek/infwarerr.sty)
(/usr/share/texmf-dist/tex/generic/oberdiek/ifluatex.sty)
(/usr/share/texmf-dist/tex/generic/oberdiek/ifpdf.sty))
(/usr/share/texmf-dist/tex/latex/xkeyval/xkeyval.sty
(/usr/share/texmf-dist/tex/generic/xkeyval/xkeyval.tex
(/usr/share/texmf-dist/tex/generic/xkeyval/xkvutils.tex
(/usr/share/texmf-dist/tex/generic/xkeyval/keyval.tex))))
(/usr/share/texmf-dist/tex/generic/oberdiek/atbegshi.sty)
(/usr/share/texmf-dist/tex/latex/etoolbox/etoolbox.sty)(load cache: /home/haruk
a/.texlive/texmf-var/luatexja/ltj-cid-auto-adobe-japan1.luc)
(/usr/share/texmf-dist/tex/luatex/luatexja/ltj-base.sty)
(/usr/share/texmf-dist/tex/luatex/luatexja/ltj-latex.sty
(/usr/share/texmf-dist/tex/luatex/luatexja/patches/lltjfont.sty
(/usr/share/texmf-dist/tex/latex/base/tuenc.def)
(/usr/share/texmf-dist/tex/latex/ms/everysel.sty)
ABD: EverySelectfont initializing macros)
(/usr/share/texmf-dist/tex/luatex/luatexja/patches/lltjdefs.sty(load luc: /home
/haruka/.texlive/texmf-var/luatex-cache/generic/fonts/otl/lmroman10-regular.luc
)(load luc: /home/haruka/.texlive/texmf-var/luatex-cache/generic/fonts/otl/ipae
xm.luc)(load cache: /home/haruka/.texlive/texmf-var/luatexja/extra_ipaexmincho.
luc)
(/usr/share/texmf-dist/tex/luatex/luatexja/jfm-ujisv.lua)
! Number too big.
ltj@@jfont ->luafunction ltj@@jfont@inner

l.53 \kanjiencoding{JY3}\selectfont
\adjustbaseline
?


また、Pandocを使用した場合、日本語フォント(-V CJKmainfont)または日本語ドキュメントクラス(-V documentclass=ltjsarticles 他)を指定すると同様にエラーになります。
$ pandoc --pdf-engine=lualatex -V documentclass="ltjsarticle" -V CJKmainfont="Migu 1C" test.md -o test.pdf
Error producing PDF.
! Number too big.
ltj@@jfont ->luafunction ltj@@jfont@inner

l.53 \kanjiencoding{JY3}\selectfont

[1] 157101 exit 43 pandoc --pdf-engine=lualatex -V documentclass="ltjsarticle" -V test.md -o