[Octave-bug-tracker] [bug #63706] @ftp class easily leads to segfault in interpreter

[Rik]

URL:
  <https://savannah.gnu.org/bugs/?63706>

                 Summary: @ftp class easily leads to segfault in interpreter
                 Project: GNU Octave
               Submitter: rik5
               Submitted: Wed 25 Jan 2023 11:42:31 AM PST
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Segfault, Bus Error, etc.
                  Status: Confirmed
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: stable
         Discussion Lock: Any
        Operating System: GNU/Linux
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


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Date: Wed 25 Jan 2023 11:42:31 AM PST By: Rik <rik5>
Recently found a simple way to cause a segfault in Octave:


f = ftp ('ftp.gnu.org');
cd (f, "nodir");   # directory does not exist
cd (f, "/")


After the first cd command the directory reported by the ftp object is "". 
That can't be good.

This occurs either on stable or on dev with the newly recoded url-transfer.cc
file.







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