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Re: Gorm segfault, discovered by MrBIOS


From: Gregory John Casamento
Subject: Re: Gorm segfault, discovered by MrBIOS
Date: Fri, 5 Dec 2003 03:14:47 -0800 (PST)

Jeff/Alex,

This is related to a double release issue that was discovered a few days ago.  
This has been corrected in CVS.   I just tried to reproduce this problem
following the outlined steps and was unable to do so, so I believe that the
problem is fixed.   Please let me know if you run into it again with the latest
CVS code.

Thanks, GJC

--- Jeff Teunissen <address@hidden> wrote:
> To reproduce:
> 
> File->New Module->New Empty
> Create Panel
> Add popup button to panel
> Double-click on it, change title of first item.
> Without clicking on anything else, select the second item and delete it.
> Click on panel bg. (note popup's menu does not order out, but this is not
> the bug)
> Click the first item.
> Result: boom.
> 
> Note: do not run a backtrace for this using DDD -- it _will_ hang. gdb will
> have to be forceably killed as well, because you cannot quit the backtrace
> display.
> 
> Partial backtrace:
> #0  GSToUnicode (dst=0xbfe04df0, size=0xbfe04df4, src=0x80bab1d "NSMenu",
>     slen=6, enc=NSISOLatin1StringEncoding, zone=0x0, options=0)
>     at Unicode.m:1052
> #1  0x40346e8d in -[GSCString getCharacters:range:] (self=0x80ecd14,
>     _cmd=0x80ecd14, buffer=0x0, aRange={location = 0, length = 6})
>     at GSString.m:1131
> #2  0x4033a0a6 in GSFormat (s=0xbfe05d80, format=0x8619060,
>     ap=0xbfe05e2c
> "address@hidden@D^\x{FFFD}\x{FFFD}", locale=0x0)
> at GSFormat.m:1840
> #3  0x403f03b3 in -[NSString initWithFormat:locale:arguments:] (
>     self=0x8181a08, _cmd=0x404be8a8, format=0x80edef8, locale=0x0,
> argList=0x0)
>     at NSString.m:827
> #4  0x403f02de in -[NSString initWithFormat:arguments:] (self=0x8181a08,
>     _cmd=0x404be870, format=0x80ecd14, argList=0x80ecd14
> "address@hidden")
>     at NSString.m:804
> #5  0x403efa4b in +[NSString stringWithFormat:] (self=0x404be720,
>     _cmd=0x80eda78, format=0x80edef8) at NSZone.h:182
> #6  0x080825f3 in -[GormInspectorsManager setCurrentInspector:] (
>     self=0x84ac478, _cmd=0x80ed9a8, anObj=0x84ac478)
>     at GormInspectorsManager.m:447
> #7  0x08081f36 in -[GormInspectorsManager updateSelection] (self=0x84ac478,
>     _cmd=0x80e1b10) at GormInspectorsManager.m:360
> #8  0x0805242a in -[Gorm handleNotification:] (self=0x81fb170,
> _cmd=0x80e16e8,
>     notification=0x8618f98) at Gorm.m:1073
> #9  0x403c0803 in -[NSNotificationCenter _postAndRelease:] (self=0x8176fa8,
>     _cmd=0x404b6200, notification=0x8618f98) at NSNotificationCenter.m:1140
> #10 0x403c0f16 in -[NSNotificationCenter
> postNotificationName:object:userInfo:]
>     (self=0x8176fa8, _cmd=0x404b6208, name=0x4001c1d4, object=0x84ab0d8,
>     info=0x0) at NSNotificationCenter.m:1210
> #11 0x403c0e0e in -[NSNotificationCenter postNotificationName:object:] (
>     self=0x8176fa8, _cmd=0x80e4500, name=0x80ecd14, object=0x80ecd14)
>     at NSNotificationCenter.m:1190
> #12 0x08063117 in -[GormDocument setSelectionFromEditor:] (self=0x84c6d10,
>     _cmd=0x80e85d0, anEditor=0x84ab0d8) at GormDocument.m:2891
> #13 0x08071439 in -[GormGenericEditor selectObjects:] (self=0x84ab0d8,
>     _cmd=0x41230970, anArray=0x84c6d10) at GormGenericEditor.m:291
> #14 0x41221e98 in -[GormMenuEditor mouseDown:] (self=0x84dc048,
>     _cmd=0x41230978, theEvent=0x84b17f0) at GormMenuEditor.m:370
> #15 0x41221ecc in -[GormMenuEditor mouseDown:] (self=0x84dc048,
>     _cmd=0x41230978, theEvent=0x84b17f0) at GormMenuEditor.m:372
> #16 0x41221ecc in -[GormMenuEditor mouseDown:] (self=0x84dc048,
>     _cmd=0x41230978, theEvent=0x84b17f0) at GormMenuEditor.m:372
> :
> :
> at this point, the backtrace repeats itself endlessly.
> 
> 
> -- 
> | Jeff Teunissen  -=-  Pres., Dusk To Dawn Computing  -=-  deek @ d2dc.net
> | GPG: 1024D/9840105A   7102 808A 7733 C2F3 097B  161B 9222 DAB8 9840 105A
> | Core developer, The QuakeForge Project        http://www.quakeforge.net/
> | Specializing in Debian GNU/Linux              http://www.d2dc.net/~deek/


=====
Gregory John Casamento -- CEO/President Open Logic Corp.
-- bheron on #gnustep, #linuxstep, & #gormtalk ---------------- 
Please sign the petition against software patents at: 
http://www.petitiononline.com/pasp01/petition.html 
-- Main Developer of Gorm (featured in April Linux Journal) ---

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