[pywin32-bugs] [ pywin32-Bugs-2496107 ] crash on File -> Open... (build 212)

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Bugs item #2496107, was opened at 2009-01-09 17:04
Message generated for change (Comment added) made by aminusfu
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https://sourceforge.net/tracker/?func=detail&atid=551954&aid=2496107&group_id=78018

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Category: pythonwin
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Robert Brewer (aminusfu)
Assigned to: Nobody/Anonymous (nobody)
Summary: crash on File -> Open... (build 212)

Initial Comment:
I just upgraded from Python 2.5 to 2.6.1 (I had also been using 2.6b2), and installed pywin32 build 212 for py2.6. At first, I elected not to Register Extensions, but then after some errors in Pythonwin (looking for some files in my Python25 dir and some in my Python26 dir), I re-ran the installer and changed it to Register Extensions. Ditto for Python 2.6--I made it the default Python. I'm on Vista (with most of the Avalon crap disabled).

Now, when I start Pythonwin.exe, and click either the "Open" toolbar button or select "File...Open" from the menu, Pythonwin immediately crashes without even showing the file selection dialog. Debug info:

Unhandled exception at 0x1e006c6d in Pythonwin.exe: 0xC0000005: Access violation reading location 0x00000004.

VS2003 jumped to "void * __cdecl _heap_alloc_base (size_t size)" in malloc.c. Here's the call stack:

 	python26.dll!1e006c6d() 	
 	win32ui.pyd!1e2bfc70() 	
 	win32ui.pyd!030031a8() 	
 	ntdll.dll!7756878a() 	
 	ntdll.dll!7752ec7e() 	
 	ntdll.dll!77562d96() 	
 	ntdll.dll!7752ec63() 	
>	msvcr71.dll!_heap_alloc(unsigned int size=2002134087)  Line 212 + 0x5	C
 	ntdll.dll!7756240b() 	
 	ntdll.dll!77562054() 	
 	ntdll.dll!77562033() 	
 	ntdll.dll!77561843() 	
 	ntdll.dll!7756240b() 	
 	ntdll.dll!77562447() 	
 	ntdll.dll!7753c4d1() 	
 	ntdll.dll!77562054() 	
 	ntdll.dll!77562033() 	
 	ntdll.dll!7753c652() 	
 	ntdll.dll!7756214c() 	
 	ntdll.dll!7756523f() 	
 	ntdll.dll!77565244() 	
 	ntdll.dll!77562033() 	
 	ntdll.dll!77561c21() 	
 	ntdll.dll!7756526c() 	
 	advapi32.dll!76180f7a() 	
 	advapi32.dll!76180efc() 	
 	advapi32.dll!76196578() 	
 	advapi32.dll!76196578() 	
 	advapi32.dll!76196578() 	
 	mfc71.dll!7c1de203() 	
 	win32ui.pyd!03003212() 	
 	win32ui.pyd!0300349d() 	
 	win32ui.pyd!0303f31b() 	
 	python25.dll!027af402() 	
 	python25.dll!027b0989() 	
 	python25.dll!0272a83d() 	
 	python25.dll!027c3217() 	
 	python25.dll!0272c1f2() 	
 	python25.dll!02752966() 	
 	python25.dll!027aed07() 	
 	python25.dll!027544a5() 	
 	python25.dll!0276cf6a() 	
 	python25.dll!0276cfa6() 	
 	python25.dll!0276abdf() 	
 	python25.dll!0277e137() 	
 	python25.dll!0272ad92() 	
 	python25.dll!0272cdca() 	
 	python25.dll!0276090e() 	
 	python25.dll!02729b9e() 	
 	python25.dll!0272ae02() 	
 	python25.dll!0272c5c1() 	
 	python25.dll!0272cdca() 	
 	python25.dll!0276090e() 	
 	python25.dll!0272dcdd() 	
 	python25.dll!0272dd42() 	
 	python25.dll!02769b22() 	
 	python25.dll!027dc52a() 	
 	python25.dll!0277e137() 	
 	python25.dll!027166dc() 	
 	python25.dll!02716786() 	
 	python25.dll!02716928() 	
 	python25.dll!0276bcb9() 	
 	python25.dll!0276be07() 	
 	python25.dll!027512d8() 	
 	python25.dll!027cbb8d() 	
 	python25.dll!02752680() 	
 	python25.dll!027525c3() 	
 	python25.dll!02752966() 	
 	python25.dll!0276c466() 	
 	python25.dll!0276c499() 	
 	python25.dll!0276c7ee() 	
 	ntdll.dll!77561843() 	
 	ntdll.dll!775616dc() 	
 	ntdll.dll!77562033() 	
 	ntdll.dll!77561843() 	
 	kernel32.dll!771e7a7e() 	
 	msvcr71.dll!_heap_alloc(unsigned int size=45944068)  Line 212	C
 	msvcr71.dll!_heap_alloc(unsigned int size=)  Line 212 + 0x5	C

Why would pythonwin for 2.6 be calling python25.dll? Sadly, I'm not the C debugger I used to be (and don't have the patience for a debug build of Python), but I notice the "original symbol location" for the python25.dll is "c:\trentm\as\ActivePython-devel\build\py2_5_1-win32-x86-apy25-rrun\python\PCbuild\python25.pdb" and for win32ui.pyd just above that, it's "O:\src\pywin32\build\temp.win32-2.5\Release\win32ui.pdb". The calls above that seem to be OK.

----------------------------------------------------------------------

>Comment By: Robert Brewer (aminusfu)
Date: 2009-01-09 17:07

Message:
By the way, I can open a file into Pythonwin by right-click, "Edit with
Pythonwin". Choosing a recent file works too, e.g.: "File -> 1.
threading.py". But the Open button still crashes.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=551954&aid=2496107&group_id=78018