[Octave-bug-tracker] [bug #48948] [MXE] closing multiple gnuplot plots w. close button hangs Octave

[Philip Nienhuis]

URL:
  <http://savannah.gnu.org/bugs/?48948>

                 Summary: [MXE] closing multiple gnuplot plots w. close button
hangs Octave
                 Project: GNU Octave
            Submitted by: philipnienhuis
            Submitted on: Tue 30 Aug 2016 12:12:54 PM CEST
                Category: Plotting with gnuplot
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Crash
                  Status: None
             Assigned to: None
         Originator Name: philipnienhuis
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Microsoft Windows

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Details:

Octave-4.1.0+ from Aug. 26 (I think it was 6cbbd550aa91 "allow subsasgn ...");
cross-built with --enable-windows-64

Steps to reproduce:

graphics_toolkit gnuplot
for ii=1:50
figure(); plot (1:10)
endfor
==> Task Manager ("processes tab") shows 50 gnuplot invocations
==> close all works still fine, all those gnuplot processes disappear.

But then:
---------
for ii=1:50
figure(); plot (1:10)
endfor

Now, close a few of the plot windows using their close buttons
Only then type: close all

==> Octave hangs as soon as more then 4 to 5 gnuplot windows are closed with
the close button.
The gnuplot process are still connected to Octave. Killing Octave using "End
process tree" terminates Octave and all of its gnuplot subprocesses. 
A second Octave invocation with its own gnuplot windows is left untouched.





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