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List:       kde-devel
Subject:    Re: Help debugging SIGBUS for 3.3.2 on Solaris
From:       Albert Chin <kde-devel () mlists ! thewrittenword ! com>
Date:       2004-12-24 1:13:05
Message-ID: 20041224011305.GC87932 () mail1 ! thewrittenword ! com
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On Thu, Dec 23, 2004 at 05:53:13PM -0600, Albert Chin wrote:
> On Thu, Dec 23, 2004 at 06:40:09PM -0500, Michael Pyne wrote:
> > On Thursday 23 December 2004 06:32 pm, Albert Chin wrote:
> > > We have qt-3.3.2, kdelibs-3.3.2, and kdebase-3.3.2 built with -g on
> > > Solaris 8/SPARC with gcc-3.4.3. If we File->Open in kate and, in the
> > > Location text box, press "/", the File->Open dialog disappears.
> > >
> > > I think the error is in the code that tries to match what you type in
> > > the Location text box with filenames in the relevant directory. If I
> > > type '/' in the Location text box, I should get a list of files in the
> > > root file system.
> > >
> > > What code should I be looking at to debug this?
> > 
> > I believe that there is a thread launched to try to fill in a drop-down list 
> > box of possible completions.  Perhaps it has something to do with that 
> > background thread?
> 
> Possibly. That might explain the backtrace from gdb:
>   #0  0xff2cd464 in QString::length (this=0xfca0bc78) at qstring.h:880
>   #1  0xfdb09380 in QTextCodec::fromUnicode (this=0x732a0, uc=@0xfca0bc78)
>       at codecs/qtextcodec.cpp:996
>   #2  0xfdae129c in QString::local8Bit (this=0xfca0bc78)
>       at tools/qstring.cpp:5838
>   #3  0xfdaa8644 in locale_encoder (fileName=@0xfca0bc78) at tools/qfile.cpp:559
>   #4  0xfdaa868c in QFile::encodeName (fileName=@0xfca0bc78)
>       at tools/qfile.cpp:589
>   #5  0xfda88f14 in QDir::setCurrent (path=@0xfca0bc78)
>       at tools/qdir_unix.cpp:137
>   #6  0xfea1bacc in DirectoryListThread::run (this=0x3cb170)
>       at kurlcompletion.cpp:285
>   #7  0xfd6c11b8 in QThreadInstance::start (_arg=0x3eb604)
>       at kernel/qthread_unix.cpp:120
>   #8  0xfcffb024 in _thread_start () from /usr/lib/libthread.so.1
>   #9  0xfcffb024 in _thread_start () from /usr/lib/libthread.so.1
> 
> I'm about to test on a machine with recent recommended patches from
> Sun.

Ok, I've tracked it down to a gcc-3.4.3 bug. The patch below gets it
to work :)

-- 
albert chin (china@thewrittenword.com)

-- snip snip
--- kio/kio/kurlcompletion.cpp.orig	Thu Dec 23 17:56:26 2004
+++ kio/kio/kurlcompletion.cpp	Thu Dec 23 19:11:59 2004
@@ -225,6 +225,7 @@
 
 		// Loop through all directory entries
 
+int i;
 		struct dirent dirPosition;
 		struct dirent *dirEntry = 0;
 		while ( !terminationRequested() &&
 
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