[Gambas-user] Gambas3: error with ODBC

[Benoît Minisini]

> Il giorno ven, 21/05/2010 alle 13.23 +0200, Benoît Minisini ha scritto:
> > > Il giorno sab, 15/05/2010 alle 23.13 +0200, Benoît Minisini ha scritto:
> > > > > Gambas 3, 64 bit version.
> > > > > During the connection setup with an ODBC database everything goes
> > > > > right, but when I try to exec a query with Connectin.Exec, Gambas
> > > > > crashes with #11 error.
> > > > 
> > > > Can you get a backtrace with gdb? And better get an output of running
> > > > your project inside valgrind?
> > > 
> > > Program received signal SIGSEGV, Segmentation fault.
> > > 0x00007ffff722cdfd in free () from /lib/libc.so.6
> > 
> > That is not very useful!
> > 
> > Read the "Reporting a problem" page on the web site to see how to get a
> > backtrage.
> > 
> > Regards,
> 
> Sorry but I'm an intermediate.... I am not the person who has the error.
> I'm making the report so I write what I receive ;-)
> 
> Here is the complete (I hope...) report:
> GNU gdb (GDB) 7.1-ubuntu
> Copyright (C) 2010 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show
> copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /usr/local/bin/gbx3...done.
> (gdb) set args -p
> (gdb) run
> Starting program: /usr/local/bin/gbx3 -p
> [Thread debugging using libthread_db enabled]
> QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed:
> Nessun file o directory
> [New Thread 0x7fffe9c98710 (LWP 1859)]
> QFileSystemWatcher: failed to add paths: /home/paolo/.config/ibus/bus
> Bus::open: Can not get ibus-daemon's address.
> IBusInputContext::createInputContext: no connection to ibus-daemon
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00007ffff722cdfd in free () from /lib/libc.so.6
> (gdb) bt
> #0  0x00007ffff722cdfd in free () from /lib/libc.so.6
> #1  0x0000000000419187 in GB_Free (addr=0x7fffffffc4ec) at
> gbx_api.c:1444
> #2  0x00007ffff12cefba in my_free (desc=0x9a4510, db=0x9a44c8) at
> main.c:117
> #3  open_database (desc=0x9a4510, db=0x9a44c8) at main.c:532
> #4  0x00007ffff14d75bc in DB_Open (desc=0x9a4510, driver=0x9a44c0,
> db=0x9a44c8)
>     at main.c:209
> #5  0x00007ffff14d7b45 in open_connection (_object=0x9a44b0)
>     at CConnection.c:81
> #6  check_opened (_object=0x9a44b0) at CConnection.c:89
> #7  0x00007ffff14d826d in CCONNECTION_exec (_object=0x9a44b0,
> _param=0x651db0)
>     at CConnection.c:432
> #8  0x0000000000407d7d in EXEC_call_native (exec=0xa56370,
>     object=0x9a451000a08230, type=140737239627200, param=0x422f0)
>     at gbx_exec.c:979
> #9  0x00000000004089cd in EXEC_native () at gbx_exec.c:1185
> #10 0x0000000000429fc1 in EXEC_loop () at gbx_exec_loop.c:982
> #11 0x0000000000409521 in EXEC_function_loop () at gbx_exec.c:795
> #12 0x00000000004098db in EXEC_function_real () at gbx_exec.c:782
> #13 0x0000000000419839 in raise_event (observer=<value optimized out>,
>     object=<value optimized out>, func_id=<value optimized out>,
> nparam=271088)
>     at gbx_api.c:483
> #14 0x0000000000419fc2 in GB_Raise (object=0x96c9b0,
>     event_id=<value optimized out>, nparam=0) at gbx_api.c:585
> #15 0x00007ffff6d4400d in CButton::clicked (this=<value optimized out>)
>     at CButton.cpp:692
> #16 0x00007ffff6d43cf2 in CButton::qt_metacall (this=0x7ffff6fa5910,
>     _c=QMetaObject::InvokeMetaMethod, _id=0, _a=<value optimized out>)
>     at CButton_moc.cpp:173
> #17 0x00007ffff5082e3f in QMetaObject::activate(QObject*, QMetaObject
> const*, int, void**) () from /usr/lib/libQtCore.so.4
> #18 0x00007ffff5bde5f2 in QAbstractButton::clicked(bool) ()
>    from /usr/lib/libQtGui.so.4
> ---Type <return> to continue, or q <return> to quit---
> #19 0x00007ffff58f886b in ?? () from /usr/lib/libQtGui.so.4
> #20 0x00007ffff58f970b in ?? () from /usr/lib/libQtGui.so.4
> #21 0x00007ffff58f997c in
> QAbstractButton::mouseReleaseEvent(QMouseEvent*) ()
>    from /usr/lib/libQtGui.so.4
> #22 0x00007ffff5599582 in QWidget::event(QEvent*) ()
>    from /usr/lib/libQtGui.so.4
> #23 0x00007ffff554322c in QApplicationPrivate::notify_helper(QObject*,
> QEvent*)
>     () from /usr/lib/libQtGui.so.4
> #24 0x00007ffff5549ecb in QApplication::notify(QObject*, QEvent*) ()
>    from /usr/lib/libQtGui.so.4
> #25 0x00007ffff507006c in QCoreApplication::notifyInternal(QObject*,
> QEvent*)
>     () from /usr/lib/libQtCore.so.4
> #26 0x00007ffff55490ae in QApplicationPrivate::sendMouseEvent(QWidget*,
> QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool)
> ()
>    from /usr/lib/libQtGui.so.4
> #27 0x00007ffff55c8f65 in ?? () from /usr/lib/libQtGui.so.4
> #28 0x00007ffff55c78ac in QApplication::x11ProcessEvent(_XEvent*) ()
>    from /usr/lib/libQtGui.so.4
> #29 0x00007ffff55f4199 in ?? () from /usr/lib/libQtGui.so.4
> #30 0x00007ffff506e992 in
> QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
> from /usr/lib/libQtCore.so.4
> #31 0x00007ffff506ed6c in
> QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
> from /usr/lib/libQtCore.so.4
> #32 0x00007ffff5072aab in QCoreApplication::exec() ()
>    from /usr/lib/libQtCore.so.4
> #33 0x00007ffff6d3a1cc in hook_loop () at main.cpp:673
> #34 0x000000000041ee78 in main (argc=1, argv=<value optimized out>)
>     at gbx.c:356
> (gdb)

The database could not be opened, and the crash actually occurs while 
releasing an ODBC handle before returning the error.

At the moment, I don't know why releasing the handle crashes: I don't know 
ODBC and didn't write that code.

I need the full project source code: I need to know what database code is 
executed, in order, to see what has been executed because the offended Exec() 
call.

Regards,

-- 
Benoît Minisini