[kde-solaris] Crash in kmail (kdepim-3.1.93)

[Stefan Teleman]

Should _never_ use C-style casts, but dynamic_cast<>(), and check for 
returning 0.

--Stefan

-----

On Sunday 23 November 2003 22:21, James F.Hranicky wrote:
> Platform: Solaris 8
> Compiler: gcc/g++ 3.3.2 -g (debug enabled for qt and kde)
> IMAP Server: courier 1.6.2/freebsd
>
> When running kmail, I can read some of my folders without any
> problems, but when I go to read my INBOX, and kmail is retrieving
> the header list, I get a sefgault (shortened gdb output):
>
>   Program received signal SIGSEGV, Segmentation fault.
>   0xfc9535cc in QListViewItem::listView() const (this=0x33be70)
>       at widgets/qlistview.cpp:3815
>   (gdb) where
>   #0  0xfc9535cc in QListViewItem::listView() const (this=0x33be70)
>       at widgets/qlistview.cpp:3815
>   #1  0xff065a90 in KMHeaderItem::irefresh() (this=0x33be70) at
> kmheaders.cpp:207 #2  0xfedf2dcc in
> KMHeaders::msgHeaderChanged(KMFolder*, int) (this=0x33be70,
> msgId=996088) at kmheaders.cpp:1363
>   (gdb) p this
>   $1 = (const QListViewItem * const) 0x33be70
>   (gdb) p c
>   $2 = (const QListViewItem *) 0x6c626f78
>   (gdb) p *c
>   Cannot access memory at address 0x6c626f78
>   (gdb)
>
>   ----:**-F1  *gud-kmail*      
> (Debugger:run)--L235--Bot-----------------------------------
>
>   QListView * QListViewItem::listView() const
>   {
>       const QListViewItem* c = this;
>   =>  while ( c && !c->is_root )
>           c = c->parentItem;
>       if ( !c )
>           return 0;
>       return ((QListViewPrivate::Root*)c)->theListView();
>   }
>
> Other times, c is a different invalid value:
>
>   [Switching to Thread 1 (LWP 1)]
>   0xfbc1d34c in _poll () from /usr/lib/libc.so.1
>   (gdb) c
>   Continuing.
>
>   Program received signal SIGSEGV, Segmentation fault.
>   0xfc9535cc in QListViewItem::listView() const (this=0x570da8)
>     at widgets/qlistview.cpp:3815
>   (gdb) p this
>   $1 = (const QListViewItem * const) 0x570da8
>   (gdb) p c
>   $2 = (const QListViewItem *) 0x149
>   (gdb)
>
> The cast seems to have problems, I guess due to a pointer bug
> somewhere. Anyone have any suggestions?
>
> -------------------------------------------------------------------
>---
>
> | Jim Hranicky, Senior SysAdmin                   UF/CISE
> | Department | E314D CSE Building                            Phone
> | (352) 392-1499 | jfh at cise.ufl.edu                     
> | http://www.cise.ufl.edu/~jfh |
>
> -------------------------------------------------------------------
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-- 
Stefan Teleman          'Nobody Expects the Spanish Inquisition'
steleman at nyc.rr.com                          -Monty Python