[bug-recutils] [BUG] Long regular expression crashes recfix

[Titus von der Malsburg]

Hi list,

I have a simple recfile that consistently crashes with a core dump:

#+BEGIN_EXAMPLE

  %rec: Dataset
  %mandatory: Keyword
  %type: Keyword regexp /(Research data|Eye 
movements|Reading|Psychology|Parafoveal processing|Word identification|Sentence 
processing|Word frequency|Word predictability|Lexical ambiguity|Preview 
benefit|Eyetracking|Reading ability)/
  
  Keyword: Research data
  
#+END_EXAMPLE

When I remove a term from the list of keywords, it works, which perhaps
indicates that the code assumes an upper limit on the length of the
regular expression.

Tested with recutils 1.7 built from source on Xubuntu 14.04.

  Titus

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