[Tcl-bugs] [ tcl-Bugs-529816 ] TclInterp crashed in Tcl_DeleteInterp

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

Bugs item #529816, was opened at 2002-03-14 02:22
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=110894&aid=529816&group_id=10894

Category: 19. [interp]
Group: = 8.3.3
Status: Pending
Resolution: Fixed
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: miguel sofer (msofer)
Summary: TclInterp crashed in Tcl_DeleteInterp

Initial Comment:
Hallo all,

i have build an windows (vc6.0) application, which 
starts an internel Tcl_Interp. From the
windows application i start myApp_Init generated from 
swig. I tested only a single function wrapped by swig 
and this function works. I now close the sub window 
from tk and got the following messages in my
debugger:

abort() line 44 + 7 bytes
Tcl_PanicVA(char * 0x002de23c, char * 0x00b9ff18) line 
95
Tcl_Panic(char * 0x002de23c) line 121 + 13 bytes
Tcl_GetStringFromObj(Tcl_Obj * 0x00ba54a8, int * 
0x00b9ff18) line 741 + 19 bytes
TclReleaseLiteral(Tcl_Interp * 0x00150d78, Tcl_Obj * 
0x00ba54a8) line 683 + 13 bytes
TclDeleteLiteralTable(Tcl_Interp * 0x00150d78, 
LiteralTable * 0x00150e3c) line 123 + 16 bytes
DeleteInterpProc(Tcl_Interp * 0x00150d78) line 1075 + 
18 bytes
Tcl_EventuallyFree(int * 0x00150d78, void (char *)* 
0x002466fb DeleteInterpProc(Tcl_Interp *)) line 313 + 
7 bytes
Tcl_DeleteInterp(Tcl_Interp * 0x00150d78) line 901 + 
14 bytes
TkInterpMain(void * 0x00000000) line 445 + 13 bytes
KERNEL32! 77e837cd()
*********************************************
In the source of Tcl I found:
*********************************************
char *
Tcl_GetStringFromObj(objPtr, lengthPtr)
[SNIP]

    if (objPtr->typePtr->updateStringProc == NULL) {
	panic("UpdateStringProc should not be invoked 
for type %s",
		objPtr->typePtr->name);
    }

where the variable is:
*********************************************
objPtr->typePtr->name	0x002da04c "cmdName"
*********************************************

I use tcl/tk 8.3.3 on win2k, also compiled by vc6.0
and the version swigwin 1.3.11.

I hope this helps.

Can you send me a short message what your opinion for 
that problem is? 

Regards
  Klaus

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

Comment By: Nobody/Anonymous (nobody)
Date: 2002-03-24 14:17

Message:
Logged In: NO 

Found my problem now,

during script execution a pointer to Tcl_Obj 
was killed by my! application. By cleaning the
memmory the tcl_interp crashes. After debugging and 
correction of my bug the interpreter leaves fine.

Sorry for the bug report, and thanks for your help, it was
"only" a memory leak in my application. :-(

To find this terrible bug i moved the program to
linux and use a special malloc-lib to control the
memory usage and found that terrible crasher feature.
So lets thank also Tux for help.

Thanks
	Klaus
 
 


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

Comment By: Jeffrey Hobbs (hobbs)
Date: 2002-03-22 16:04

Message:
Logged In: YES 
user_id=72656

moving this to pending fixed, as per miguel's note.  It may 
also be that Tcl_FindExecutable needs to be called, but I 
don't see any more code sample.

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

Comment By: miguel sofer (msofer)
Date: 2002-03-14 04:00

Message:
Logged In: YES 
user_id=148712

Mhhh ... looks like bug #467523 to me. That bug has been
fixed last october, I would imagine that your problems will
disppear if you upgrade to Tcl8.3.4 (or apply the patch
enclosed in the bug report).

Please do notify us here of the result.

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

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