[Tcl-bugs] [ tktoolkit-Bugs-469074 ] 'image create photo .' segfaults

[<no...@so...>]

Bugs item #469074, was opened at 2001-10-08 06:32
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=112997&aid=469074&group_id=12997

Category: 37. Image Basics
Group: 8.4a4
Status: Open
Resolution: None
Priority: 5
Submitted By: Vince Darley (vincentdarley)
Assigned to: Donal K. Fellows (dkf)
Summary: 'image create photo .' segfaults

Initial Comment:
I thought this bug had been fixed somewhere, but on 
Windows 2000 with the latest cvs pull, 'image create 
photo .' crashes.



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Comment By: Nobody/Anonymous (nobody)
Date: 2001-10-08 08:20

Message:
Logged In: NO 

It does still crash with your sub-interp example. Here's a 
stack trace of the original version:

Tcl_DeleteHashEntry(Tcl_HashEntry * 0x014e9f90) line 518 + 
3 bytes
DeleteImage(ImageMaster * 0x014f3e50) line 915 + 19 bytes
Tcl_Release(int * 0x014f3e50) line 241 + 7 bytes
Tk_ImageObjCmd(int * 0x0014ea80, Tcl_Interp * 0x00145c60, 
int 0, Tcl_Obj * const * 0x00155cb0) line 304 + 16 bytes
TclExecuteByteCode(Tcl_Interp * 0x00145c60, ByteCode * 
0x014398f8) line 870 + 34 bytes
Tcl_EvalObjEx(Tcl_Interp * 0x00145c60, Tcl_Obj * 
0x014e9b90, int 131072) line 2951 + 13 bytes
Tcl_RecordAndEvalObj(Tcl_Interp * 0x00145c60, Tcl_Obj * 
0x014e9b90, int 131072) line 142 + 23 bytes
Tcl_RecordAndEval(Tcl_Interp * 0x00145c60, char * 
0x014f3a50, int 131072) line 62 + 17 bytes
InterpreterCmd(int * 0x00daf4a0, Tcl_Interp * 0x00e0fe38, 
int 3, char * * 0x0012ed88) line 662 + 27 bytes
TclInvokeStringCommand(int * 0x00e276f8, Tcl_Interp * 
0x00e0fe38, int 3, Tcl_Obj * const * 0x00dc4780) line 1759 
+ 25 bytes
TclExecuteByteCode(Tcl_Interp * 0x00e0fe38, ByteCode * 
0x0140f518) line 870 + 34 bytes

(this is by typing 'image create photo .' into a console 
window in Windows Tk.

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Comment By: Donal K. Fellows (dkf)
Date: 2001-10-08 07:54

Message:
Logged In: YES 
user_id=79902

Tk *really* doesn't like you killing . under it like that,
but I at least don't see a segfault (on Solaris.)  A
backtrace would be most tremendously helpful, but this is an
area where everything is horribly asynchronous (it involves
interaction between several different Tk subsystems and it
makes a non-trivial round-trip through Tcl as well, just to
confuse things further) so I can't guarantee to be able to
help.

Does it still crash when you do this:

  set i [interp create]
  load {} Tk $i
  $i eval {image create photo .}

If not, it might even be event-loop related...  :^(

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Comment By: Vince Darley (vincentdarley)
Date: 2001-10-08 06:38

Message:
Logged In: YES 
user_id=32170

Please note this crashes in debug build only, and I'm using:

-DTCL_MEM_DEBUG -DUSE_TCLALLOC=0 -DPURIFY

that might make a difference.


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You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=112997&aid=469074&group_id=12997