[Kde-bindings] KFileTreeView and Korundum

Richard Dale Richard_Dale at tipitina.demon.co.uk
Thu Dec 15 20:54:23 UTC 2005

On Thursday 15 December 2005 16:21, Diego 'Flameeyes' Pettenò wrote:
> Hi,
> okay, I've tried debugging this myself but seems like I'm not good enough.
> I'm having problems with KDigest and the KFileTreeView right now.
> When I first open a file with it, the @allDirs KFileTreeView instance is
> disabled and re-enabled (after loading the data in the file); at that
> point, if I open the tree at the right, I see th animations starting but
> never stopping, and after a few click, I get the ruby instance killed by
> PAX (if I disable PAX, it seems to continue, but that might mean it calls
> unknown code); the stack trace is:
> #0  0x0000000000a962b0 in ?? ()
> #1  0x0000311ddf702389 in KFileTreeView::slotExpanded (this=0xa28d50,
>     item=0xb28540) at kfiletreeview.cpp:304
> #2  0x0000311ddf702590 in KFileTreeView::qt_invoke (this=0xa28d50, _id=112,
>     _o=0x7071b371e500) at kfiletreeview.moc:347
> #3  0x0000311ddd986f84 in x_KFileTreeView::x_3 ()
>    from /usr/kde/3.5/lib64/libsmokekde.so.1
> #4  0x0000311ddcc8bb92 in MethodCall::callMethod ()
>    from /usr/lib64/ruby/site_ruby/1.8/x86_64-linux/korundum.so
> #5  0x0000311ddcc8bc87 in MethodCall::next ()
>    from /usr/lib64/ruby/site_ruby/1.8/x86_64-linux/korundum.so
> #6  0x0000311ddcc883b6 in set_obj_info ()
>    from /usr/lib64/ruby/site_ruby/1.8/x86_64-linux/korundum.so
> #7  0x0000311ddbcbb1d1 in rb_call0 () from /usr/lib64/libruby18.so.1.8
> #8  0x0000311ddbcbbad2 in rb_call () from /usr/lib64/libruby18.so.1.8
> #9  0x0000311ddbcc336c in method_missing () from
> /usr/lib64/libruby18.so.1.8 #10 0x0000311ddbcbbc1a in rb_call () from
> /usr/lib64/libruby18.so.1.8 #11 0x0000311ddbcc3492 in rb_call_super () from
> /usr/lib64/libruby18.so.1.8 #12 0x0000311ddcc8a89b in getmetainfo ()
>    from /usr/lib64/ruby/site_ruby/1.8/x86_64-linux/korundum.so
> #13 0x0000311ddbcbb1d1 in rb_call0 () from /usr/lib64/libruby18.so.1.8
> #14 0x0000311ddbcbbad2 in rb_call () from /usr/lib64/libruby18.so.1.8
> #15 0x0000311ddcc8c3e4 in VirtualMethodCall::callMethod ()
> [I still have to rebuild smoke/qtruby/korundum with debug enabled, so the
> rest of the calls are without line numbers]
> I have no idea how to debug this further... pipacs from PAX team suggested
> that it might have been a problem with the virtual populate() call (having
> it NULL-ified for some reason), but I have no way to confirm this yet.
Can you post the ruby code so I can reproduce the problem? It's crashing in a 
C++ method, so it's possible that you code would also crash the same if it 
was all written in C++. I don't know anything about PAX I'm afraid. Looking 
at the stack trace, it starts off by overriding a virtual method, and ends up 
calling a slot via qt_invoke() which looks a bit odd. The slot is 
KFileTreeView::slotExpanded because I can see from the stack trace, but I 
don't think I can tell what the virtual method is.

-- Richard

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