[Lazarus] IDE unstable - Online Package manager bug

[Martin Frb]

Laz 2.1 trunk, or 2.0.1 fixes?

Can you attach a list of all threads, and traces of other threads please?

On 24/02/2019 12:00, Michael Van Canneyt via lazarus wrote:
>
> Hello,
>
> I find that the IDE has become very unstable lately. I didn't install any
> new packages, didn't update FPC (still on FPC 3.0.4). Just updated 
> lazarus
> from SVN.
>
> 4 out of 5 attempts to close the IDE using the window manager button 
> fails:
> lazarus hangs and I must kill it using
> killall -KILL lazarus
> from a terminal.
>
> It's very reproducible.
>
> Start lazarus
> Open package
> Compile package
> Switch to form editor of start project
> Close (window manager or menu file - exit)
> -> hang
>
> I can attach to it using gdb. Here is the stack trace:
>
> 0  pthread_cond_timedwait@@GLIBC_2.3.2 () at 
> ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
> #1  0x000000000044f306 in INTRTLEVENTWAITFORTIMEOUT 
> (AEVENT=0x7f460e943040, TIMEOUT=100) at ../unix/cthreads.pp:973
> #2  0x000000000043f66f in RTLEVENTWAITFOR (STATE=0x7f460e943040, 
> TIMEOUT=100) at ../inc/thread.inc:325
> #3  0x000000000052fc3c in CHECKSYNCHRONIZE (TIMEOUT=100) at 
> ../objpas/classes/classes.inc:395
> #4  0x000000000199177a in DOONIDECLOSE (this=0x7f45fff9ba80, 
> SENDER=0x7f46057bfdb0) at opkman_intf.pas:125
> #5  0x00000000006a30c7 in CALLNOTIFYEVENTS (this=0x7f45f4c6d440, 
> SENDER=0x7f46057bfdb0) at lazmethodlist.pas:315
> #6  0x00000000009749f5 in DOCALLNOTIFYHANDLER (this=0x7f46057bfdb0, 
> HANDLERTYPE=LIHTIDECLOSE) at lazideintf.pas:659
> #7  0x00000000004ad026 in MAINIDEFORMCLOSE (this=0x7f46057bfdb0, 
> SENDER=0x7f45f73f98f0, CLOSEACTION=CAFREE) at main.pp:2058
> #8  0x0000000000487698 in DOCLOSE (this=0x7f45f73f98f0, 
> CLOSEACTION=CAFREE) at include/customform.inc:959
> #9  0x000000000048af81 in CLOSE (this=0x7f45f73f98f0) at 
> include/customform.inc:2196
> #10 0x00000000004c1afd in QUITIDE (this=0x7f46057bfdb0) at main.pp:6622
> #11 0x00000000004b50dd in MNUQUITCLICKED (this=0x7f46057bfdb0, 
> SENDER=0x7f45f7e9cfc0) at main.pp:3655
> #12 0x000000000096f40f in MENUITEMCLICK (this=0x7f45f7e9cfc0, 
> SENDER=0x7f45fff05d40) at menuintf.pas:544
> #13 0x00000000009733b1 in MENUITEMCLICK (this=0x7f45f7e9cfc0, 
> SENDER=0x7f45fff05d40) at menuintf.pas:1695
>
> Seems a bug in the online package manager. Who said once that threads 
> are evil ? :)
>
> For now I uninstalled the online package manager, but a fix would be 
> really appreciated :-)
>
> Michael.