[Octave-bug-tracker] [bug #51589] crash on regexp

[Rik]

Follow-up Comment #1, bug #51589 (project octave):

Confirmed, but I used gdb to check and the segfault is coming from libpcre,
rather than Octave.  Is there a better pattern to use to accomplish what you
want?  The pattern


'(?:[+-]?\d*\.\d*e[+-]\d*\s*)*'


creates a capture-block which may or may not match because of the ending
asterisk.  The capture buffer has to be allocated out of dynamic memory
because it doesn't know in advance what it will find in the text.  In this
case, it looks like there are over 80,000 matches and probably more than 1M of
memory required.  That is exceptionally large.

It seems like this is just a tab-separated data file with the first two lines
being a text header.  If you just want to read the data in to Octave this
would be easier.


x = dlmread ("oc.txt", "\t", 2, 0);




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