Using the latest version of bookmark.sty with TeX4ht causes a floating point
exception every time t4ht runs dvipng. (Fortunately, the exception occurs after
dvipng has generated each image file and the images are all correct.)
A minimal LaTeX example file, dvipng-bug.tex, that illustrates the problem is
this:
\documentclass{article}
\usepackage{bookmark}
\begin{document}
\[ \int_0^\infty e^{-\frac{x^2}2} dx \]
\end{document}
When I use the latest TeX Live (from ctan.org) and compile this file using
htlatex dvipng-bug
the run ends with
Entering dvipng-bug.lg
System call: dvipng -q -T tight -D 144 -bg Transparent -pp 2:2 dvipng-bug.idv
-o dvipng-bug0x.png >/dev/null
sh: line 1: 958 Floating point exception(core dumped) dvipng -q -T tight -D
144 -bg Transparent -pp 2:2 dvipng-bug.idv -o dvipng-bug0x.png > /dev/null
--- Warning --- System return: 34816
This run used tex4ht.sty version 2021-01-2 and bookmark.sty version 2020-11-06
v1.29. If I instead use bookmark.sty version 2019/12/03 v1.28 the exception
does not occur.
Best wishes, Francis
