#89 "Bad native font flag in `map_char_to_glyph'"

[Márton Marczell]

XeLaTeX fails with

! Internal error: bad native font flag in `map_char_to_glyph'

when compiling this MWE:

\documentclass{article}
\usepackage[no-math]{fontspec}
\usepackage{newtxmath}
\begin{document}
$\dot x$
\end{document}

[Anonymous]

Any updates?

[Jonathan Kew]

Not that I'm aware of. However, there have been various bug-fixes since this was filed, so it'd be good to confirm whether the issue still exists in the current version (e.g. TeX Live 2019 release).

[Márton Marczell]

I cannot reproduce this with latest XeTeX from MiKTeX

[Jonathan Kew]

OK, thanks. It doesn't reproduce for me either. I think we can close this.

[Anonymous]

I'm still having this issue! My Tex Live is 2025 - I'm using Charis SIL and trying to use \widehat on a Mac. This is my MWE:

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{XCharter Math}
\usepackage{fontspec}
\DeclareMathAlphabet\mathcal{OMS}{cmsy}{m}{n}
\begin{document}
$\widehat{\mathcal{C}}$
\end{document}