pdftex-dev crashes with character ī

[John02139]

Brief outline of the bug

The character ī hangs compilation under the current pdftex-dev. This does not occur when: that character is omitted; code is run with current released of pdftex.

Minimal example showing the bug

\RequirePackage{latexbug}       % <--should be always the first line (see CONTRIBUTING)!
\documentclass{article}
\usepackage[T1]{fontenc}
\begin{document}

abc

ī % compilation stops when this character is included under current pdftex-dev

àáâäæãåā èéęëêēė ìíïǐĩıįî ôöòóœøōõ ûüùúū çćč ł ñń ßśš ÿ žźż.

\end{document}

Log file (required) and possibly PDF file

This is pdfTeX, Version 3.141592653-2.6-1.40.26 (TeX Live 2024) (preloaded format=pdflatex-dev)
restricted \write18 enabled.
entering extended mode
(./scratch-i.tex
LaTeX2e <2025-06-01> pre-release-1 (develop 2025-1-15 branch)
L3 programming layer <2025-01-14>
(/usr/local/texlive/2024/texmf-dist/tex/latex/latexbug/latexbug.sty)
(/usr/local/texlive/2024/texmf-dist/tex/latex-dev/base/article.cls
Document Class: article 2024/06/29 v1.4n Standard LaTeX document class
(/usr/local/texlive/2024/texmf-dist/tex/latex-dev/base/size10.clo))
(/usr/local/texlive/2024/texmf-dist/tex/latex-dev/base/fontenc.sty)
(/usr/local/texlive/2024/texmf-dist/tex/latex-dev/l3backend/l3backend-pdftex.de
f) (./scratch-i.aux)
Process aborted

[u-fischer]

This is a duplicate of #1587 and it will be fixed with the next dev-release.

[John02139]

Sorry for the duplication! Closing.