test1.tex内容
\documentclass{article}
\begin{document}
$DDDDDDD$
\end{document}
test2.tex内容
\documentclass{article}
\begin{document}
$DDDDDDD2222221111$
\end{document}
问题
This is pdfTeX, Version 3.14159265-2.6-1.40.20 (MiKTeX 2.9.7250 64-bit) (preloaded format=pdflatex 2019.11.20) 21 NOV 2019 10:42
entering extended mode
*./test1-test2.tex
(test1-test2.tex
LaTeX2e <2019> patch level 3
)
! Emergency stop.
<> ./test1-test2.tex
* (job aborted, no legal \end found)
Here is how much of TeX’s memory you used:
7 strings out of 492450
167 string characters out of 3120471
58962 words of memory out of 3000000
4468 multiletter control sequences out of 15000+200000
3640 words of font info for 14 fonts, out of 3000000 for 9000
1141 hyphenation exceptions out of 8191
5i,0n,1p,1b,8s stack positions out of 5000i,500n,10000p,200000b,50000s
! ==> Fatal error occurred, no output PDF file produced!