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[Octave-bug-tracker] [bug #35012] regexp hangs when spaces are at the en

From: Søren Hauberg
Subject: [Octave-bug-tracker] [bug #35012] regexp hangs when spaces are at the end of the input
Date: Thu, 08 Dec 2011 13:48:37 +0000
User-agent: Mozilla/5.0 (Ubuntu; X11; Linux i686; rv:8.0) Gecko/20100101 Firefox/8.0


                 Summary: regexp hangs when spaces are at the end of the input
                 Project: GNU Octave
            Submitted by: hauberg
            Submitted on: Thu 08 Dec 2011 02:48:35 PM CET
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Other
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.4.0
        Operating System: GNU/Linux



I've been hitting (what appears to be) an infinite loop in 'regexp'. The
following example reproduces things for me

numPat = '(-?[0-9]*\.?[0-9]*[eE]?-?[0-9]*)';
R = ' 9.962 0.000 0.000 ';
offsets = regexp(R, numPat, 'tokens')

This does not return on my machine. The problem disappears if I remove the
space at the end of 'R'.



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