Re: [PyMOL] Windows PDB file for debugging pymol C extension?

[Christoph G. <cg...@uc...>]

Try to turn on heap verification for python.exe using the following 
registration key and then start pymol with `python.exe -m pymol`

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image 
File Execution Options\python.exe]
"GlobalFlag"="0x02000000"
"VerifierFlags"=dword:00000001
"PageHeapFlags"="0x3"


Christoph


On 5/9/2018 5:32 PM, Gary Oberbrunner wrote:
> Thanks -- unfortunately it seems to be heap corruption. I can see where 
> it's detected:
> 
>          ntdll.dll!RtlpLogHeapFailure ()Unknown
> ntdll.dll!RtlFreeHeap()Unknown
> ucrtbase.dll!_free_base()Unknown
> _cmd.cp36-win_amd64.pyd!VLAFree(void * ptr) Line 222C++
> _cmd.cp36-win_amd64.pyd!CGOFreeImpl(CGO * I, short withVBOs) Line 447C++
> _cmd.cp36-win_amd64.pyd!CGOFree(CGO * & I) Line 435C++
> _cmd.cp36-win_amd64.pyd!OrthoInvalidateDoDraw(_PyMOLGlobals * G) Line 
> 2808C++
> _cmd.cp36-win_amd64.pyd!OrthoAddOutput(_PyMOLGlobals * G, const char * 
> str) Line 1175C++
> _cmd.cp36-win_amd64.pyd!PCatchWrite(_object * self, _object * args) Line 
> 2738C++
> 
> But that doesn't really tell me anything about where the actual heap 
> corruption happened.
> 
> On Wed, May 9, 2018 at 1:54 PM, Christoph Gohlke <cg...@uc... 
> <mailto:cg...@uc...>> wrote:
> 
>     I put a VS2015 build of svn rev 4189 including debug information
>     files for the pymol source at
>     <https://www.lfd.uci.edu/~gohlke/download/pymol-svn-4189.zip
>     <https://www.lfd.uci.edu/%7Egohlke/download/pymol-svn-4189.zip>>
> 
>     Hope this helps.
> 
>     Christoph
> 
> 
>     On 5/9/2018 7:34 AM, Gary Oberbrunner wrote:
> 
>         Hi; I'm running into a crash in Windows pymol, in the C
>         extension part (_cmd.cp36-win_amd64.pyd) using pymol open source
>         2.1.0. I'd like to debug it; is there a symbol file (.pdb)
>         available anywhere? Or failing that, can I rebuild the C
>         extension from source and create a pdb?
> 
>         -- 
>         Gary Oberbrunner
> 
> 
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