[luatex] Crash with hyphenation patterns

[Taco Hoekwater]

Joseph Wright wrote:
> Hello all,
> 
> With the minimal format file
> 
> \catcode `\{ = 1 \relax
> \catcode `\} = 2 \relax
> \catcode 32  = 9  \relax
> \endlinechar = 32 \relax
> \input hyphen.tex
> \dump
> 
> everything works fine with either pdfTeX or XeTeX (TeX Live 2010 Pretest
> builds). However, with LuaTeX I get a crash:
> 
> This is LuaTeX, Version beta-0.60.1-2010052109 (TeX Live 2010/pretest)
> (rev 3685)  (INITEX)
>  restricted \write18 enabled.
> (./format.tex
> (/usr/local/texlive/2010/texmf/tex/generic/hyphen/hyphen.texAbort trap
> 
> Any idea why this is happening? 

It crashed because this input creates a single pattern containing the
whole file, and the code that does the processing was not guarded
against that. I have now introduced a new error message:

  ! Pattern of enormous length ignored.

and that stops the crash (with an error).

Best wishes,
Taco