[issue33257] Race conditions in Tkinter with non-threaded Tcl

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

I reproduced the error on installed 2.7.14, running tk 8.5.18.

I ran TkinterCrash3-2-2.py 15 times on 64-bit Win10, installed x64 3.6.5, with tk 8.6.8, and experienced no crashes. I ran it another 10 times with 32-bit repository 3.8 debug and no crashes.  My conclusion: this is at least partly a tcl/tk issue fixed in current tcl/tk.

"this would affect any branch if built with nonthreaded Tcl."  If python is delivered (on Windows and Mac) with 'threaded tcl' and rebuilding with 'nonthreaded tcl' causes a problem with tkinter, then one should not do that.  In practice, essentially no one does so.

Serhiy, do you know what type of tcl/tk is distributed on Linux?

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nosy:  -__Vano, gvanrossum

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<https://bugs.python.org/issue33257>
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