[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan  added the comment:

Thanks for the release Ned. I can confirm that there is no segfault with Python 
3.7.1rc2 (v3.7.1rc2:6c06ef7dc3).

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Ned Deily]

Ned Deily  added the comment:

It appears that the segfault behavior *was* introduced by some change in the Tk 
8.6 development snapshot I chose to use for the python.org macOS installer 
builds in 3.7.1rc1 and 3.6.7rc2.  For 3.7.1rc2 and 3.6.7rc2, I reverted back to 
using the standard Tk 8.6.8 release and the segfault seems to have gone away on 
the systems where I was able to reproduce it with rc1 - whether it segfaulted 
seems to be system dependent.  We'll probably wait for the official release of 
Tk 8.6.9 before trying to upgrade Tk again.  Let us know if the problem 
reappears.

--
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Ned Deily]

Ned Deily  added the comment:


New changeset d8b6425e58a1fccdf8ddbbcde63066c13c1bcfaf by Ned Deily in branch 
'3.7':
bpo-34370: Revert to using released Tk 8.6.8 with macOS installers
https://github.com/python/cpython/commit/d8b6425e58a1fccdf8ddbbcde63066c13c1bcfaf


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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Ned Deily]

Ned Deily  added the comment:


New changeset f55c3ae657595d12ce78aca76c9c6b998d632424 by Ned Deily in branch 
'3.6':
bpo-34370: Revert to using released Tk 8.6.8 with macOS installers
https://github.com/python/cpython/commit/f55c3ae657595d12ce78aca76c9c6b998d632424


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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Ned Deily]

Ned Deily  added the comment:

> Can it be caused by 
> https://github.com/python/cpython/commit/adf493227f1efd5d6b34f46b854142bf3b5a411c
>  ?

It very likely could be.  Thanks for the report.  I'll take a look at it a bit 
later.

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assignee:  -> ned.deily

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Aivar Annamaa]

Aivar Annamaa  added the comment:

Can it be caused by 
https://github.com/python/cpython/commit/adf493227f1efd5d6b34f46b854142bf3b5a411c
 ?

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan  added the comment:

Thanks, I can confirm that this works with 3.7.0 and segfaults with 3.7.1RC1 
Mac OS installer that uses Tk 8.6 . Clicking the button and closing the file 
open dialog triggers this segfault as noted in your description. I don't know 
how I can configure my local build to use Tk 8.6 and maybe it's a problem with 
Tk 8.6. It seems from 3.7 and above the installer uses 8.6 while 3.6 
dynamically links to the apple's version 8.5 as noted in 
https://www.python.org/download/mac/tcltk/#built-in-8-6-8

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Aivar Annamaa]

Aivar Annamaa  added the comment:

I got the segfault with Tk 8.6, provided with python.org installer.

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan  added the comment:

Thanks for the report and script. I can't reproduce this with 3.7.1rc1 tag and 
also tried this on v3.7.0 which works fine on Mac OS running 10.10.4 and tcl 
version 8.5 . I checked out the 3.7.1rc1 tag and did a clean rebuild with `git 
clean -xdf && ./configure --with-pydebug && make -s -j4` and tried below

Steps I followed : 

* I executed the script.
* clicked on "click me" button.
* A file open dialog opened and I closed this with esc.
* Again clicked "click me" button and selected a file to click enter the file 
open dialog disappeared 
* Closed the main box with "click me". No segfault.

Since the report says it's a regression between 3.7.0 and 3.7.1RC1 I am adding 
Ned as a friendly ping about this issue so that this can be tracked better 
between RC releases.

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nosy: +ned.deily, xtreak

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Aivar Annamaa]

Aivar Annamaa  added the comment:

Looks like the workaround is to provide explicit `parent` named argument to the 
dialog call.

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Aivar Annamaa]

Aivar Annamaa  added the comment:

Here is a simple application that also exposes this problem. Click at the 
button and press Escape when dialog appears.

import tkinter as tk
import tkinter.filedialog as fd
 
root = tk.Tk()
 
def dostuff():
fd.askopenfile()
 
bt = tk.Button(root, text="Click me!", command=dostuff)
bt.grid()
 
root.mainloop()

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[issue34927] Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)

[Aivar Annamaa]

New submission from Aivar Annamaa :

After switching from Python 3.7.0 to 3.7.1rc1 (macOS, 64-bit only downloaded 
from python.org), my rather big Tkinter application started to segfault 
whenever I close a system dialog (eg. the one created by askopenfilename or 
showerror) by keypress (eg. Escape or Enter). The crash does not happen when I 
close the dialog with mouse click.

The code that calls the dialog runs fine, and the crash seems to happen next 
time the control goes back to Tk mainloop. It looks like the keypress performed 
in the dialog somehow remains in Tk event queue.

Here is the system log for main thread, (more detailed information can be seen 
at https://bitbucket.org/plas/thonny/issues/545/quit):

Crashed Thread:0  Dispatch queue: com.apple.main-thread

Exception Type:EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:   KERN_INVALID_ADDRESS at 0x
Exception Note:EXC_CORPSE_NOTIFY

VM Regions Near 0:
--> 
__TEXT 00010ab7e000-00010ab7f000 [4K] r-x/rwx 
SM=COW  
/Users/USER/Desktop/Thonny.app/Contents/Frameworks/Python.framework/Versions/3.7/Resources/Python.app/Contents/MacOS/Python

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib  0x7fff97e1a8ea __kill + 10
1   libsystem_platform.dylib0x7fff96dba52a _sigtramp + 26
2   ??? 00 0 + 0
3   libtk8.6.dylib  0x00010b876e84 
-[TKApplication(TKKeyEvent) tkProcessKeyEvent:] + 160
4   libtk8.6.dylib  0x00010b87d6d9 TkMacOSXEventsCheckProc 
+ 360
5   libtcl8.6.dylib 0x00010b714d06 Tcl_DoOneEvent + 316
6   _tkinter.cpython-37m-darwin.so  0x00010b64501d _tkinter_tkapp_mainloop 
+ 269
7   org.python.python   0x00010aba752e 
_PyMethodDef_RawFastCallKeywords + 430
8   org.python.python   0x00010abad192 
_PyMethodDescr_FastCallKeywords + 82
9   org.python.python   0x00010ac6640c call_function + 780
10  org.python.python   0x00010ac6339c _PyEval_EvalFrameDefault 
+ 25164
11  org.python.python   0x00010ac66f06 _PyEval_EvalCodeWithName 
+ 2422
12  org.python.python   0x00010aba6a61 
_PyFunction_FastCallKeywords + 257
13  org.python.python   0x00010ac663e2 call_function + 738
14  org.python.python   0x00010ac633b6 _PyEval_EvalFrameDefault 
+ 25190
15  org.python.python   0x00010aba6ed0 function_code_fastcall + 
128
16  org.python.python   0x00010ac663e2 call_function + 738
17  org.python.python   0x00010ac63457 _PyEval_EvalFrameDefault 
+ 25351
18  org.python.python   0x00010ac66f06 _PyEval_EvalCodeWithName 
+ 2422
19  org.python.python   0x00010ac5d074 PyEval_EvalCode + 100
20  org.python.python   0x00010ac5a65d builtin_exec + 557
21  org.python.python   0x00010aba752e 
_PyMethodDef_RawFastCallKeywords + 430
22  org.python.python   0x00010aba6a9a 
_PyCFunction_FastCallKeywords + 42
23  org.python.python   0x00010ac663d4 call_function + 724
24  org.python.python   0x00010ac63457 _PyEval_EvalFrameDefault 
+ 25351
25  org.python.python   0x00010ac66f06 _PyEval_EvalCodeWithName 
+ 2422
26  org.python.python   0x00010aba6a61 
_PyFunction_FastCallKeywords + 257
27  org.python.python   0x00010ac663e2 call_function + 738
28  org.python.python   0x00010ac63457 _PyEval_EvalFrameDefault 
+ 25351
29  org.python.python   0x00010ac66f06 _PyEval_EvalCodeWithName 
+ 2422
30  org.python.python   0x00010aba663b _PyFunction_FastCallDict 
+ 523
31  org.python.python   0x00010acb8743 pymain_run_module + 147
32  org.python.python   0x00010acb7b47 pymain_main + 5303
33  org.python.python   0x00010acb868a _Py_UnixMain + 58
34  libdyld.dylib   0x7fff921c35ad start + 1

--
components: Tkinter
messages: 327326
nosy: aivarannamaa
priority: normal
severity: normal
status: open
title: Tkinter-related segfault on macOS (regression between 3.7.0 and 3.7.1rc1)
versions: Python 3.7

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