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Description of problem:

gnome-shell crashes frequently when Tcl/Tk displays the saveAs dialog and the user presses Cancel

Version-Release number of selected component (if applicable):


How reproducible:

Run the following script:
#!/usr/bin/tclsh

package require Tk

wm withdraw .

proc do_save_as { } {
	set f [tk_getSaveFile]
}

toplevel .test

pack [button .test.s2 -text "SAVE" -command do_save_as] -side top

Press the save button and select an existing file. It will ask if you want to overwrite, say No, then press Cancel. You may have to do this a dozen times, eventually gnome-shell will crash.

Steps to Reproduce:
1. See above
2.
3.

Actual results:

gnome-shell crashes

Expected results:

gnome-shell continues to operate normally.

Additional info:

I was able to clearly reproduce the crash using the reproducer (thanks!) on gnome-shell-3.28.3-16.el7 and after upgrading to gnome-shell-3.28.3-21.el7, I was unable to reproduce the crash.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2020:1021