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[Octave-bug-tracker] [bug #57064] regexp hangs in infinite loop

From: A.R. Burgers
Subject: [Octave-bug-tracker] [bug #57064] regexp hangs in infinite loop
Date: Wed, 16 Oct 2019 11:28:53 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/18.17763


                 Summary: regexp hangs in infinite loop
                 Project: GNU Octave
            Submitted by: arb
            Submitted on: Wed 16 Oct 2019 03:28:52 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any



octave dev (stable won't) will hang in this regexp invocation (attached as
script tst.m)

val = regexp (rawdata, '<c

the regular expression comes from the __OCT_xlsx2oct__.m function from the IO
package around line 100.

I also attach rawdata.mat. I have not been able yet to reproduce this with a
smaller example.


File Attachments:

Date: Wed 16 Oct 2019 03:28:52 PM UTC  Name: tst.m  Size: 190B   By: arb

Date: Wed 16 Oct 2019 03:28:52 PM UTC  Name: rawdata.mat  Size: 271KiB   By:



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