[M3devel] assertion failure in Juno
Daniel Alejandro Benavides D.
dabenavidesd at yahoo.es
Thu Nov 5 23:41:53 CET 2009
Hi:
I think you are correct, but the problem is happening not in M3 part of trestle but on it´s dependences, that said I would test it standalone and check if nothing changes, would you mind to do the test? did you do your test distributed among different platforms?
I retested the same and it didn't terminate badly.
Thanks in advance
--- El jue, 5/11/09, Mika Nystrom <mika at async.async.caltech.edu> escribió:
> De: Mika Nystrom <mika at async.async.caltech.edu>
> Asunto: Re: [M3devel] assertion failure in Juno
> Para: "Daniel Alejandro Benavides D." <dabenavidesd at yahoo.es>
> CC: m3devel at elegosoft.com
> Fecha: jueves, 5 noviembre, 2009 1:58
> I had to fiddle with it a bit to get
> it to crash.
>
> But no I don't think it's a Juno bug. It's something
> deeper in Trestle, I would
> think.
>
> I'm running X remotely to a VNC server on a different
> machine and then viewing
> from a viewer on a third machine.
>
> Mika
>
> "Daniel Alejandro Benavides D." writes:
> >Hi:
> >thanks for the code, I drew it and making Grid On label
> show Grid Off inste=
> >ad and making a and c coincide (using both Drag
> function button and source =
> >code coordinates change as pointed on 3. and 4.
> instructions of your first =
> >email) but so far I can=B4t get to see anything wrong
> happen (i.e. it doesn=
> >`t terminate). It looks like your Xserver showed
> an error on stderr.
> >Perhaps this can be xclient crash handling Trestle
> client messages to xserv=
> >er, that would explain this is not related to Juno-2
> core functionality per=
> >se at least in LINUXLIBC6 box as I can tell, have you
> tested this standalon=
> >e (Juno and Xserver in same machine, did you do in this
> way the crash happe=
> >n) or in other platform or distributed between
> two different platform mach=
> >ines with their xclient and xserver?=20
> >
> >compiler version (cm3 -version)
> >test at fbd-desktop:~$ cm3 -version
> >Critical Mass Modula-3 version d5.8.2
> > last updated: 2009-07-15
> > compiled: 2009-07-20 04:36:35
> > configuration: /usr/local/cm3/bin/cm3.cfg
> > host: LINUXLIBC6
> > target: LINUXLIBC6 =20
> >
> >My xorg xserver is running standalone (i.e not
> distributed).
> >Thanks in advance
> >
> >--- El jue, 5/11/09, Mika Nystrom <mika at async.async.caltech.edu>
> escribi=F3=
> >:
> >
> >> De: Mika Nystrom <mika at async.async.caltech.edu>
> >> Asunto: Re: [M3devel] assertion failure in Juno
> >> Para: "Daniel Alejandro Benavides D." <dabenavidesd at yahoo.es>
> >> CC: m3devel at elegosoft.com
> >> Fecha: jueves, 5 noviembre, 2009 1:02
> >>=20
> >> Here's the Juno code. Turn on the grid and
> make a and
> >> c coincide.
> >>=20
> >> Mika
> >>=20
> >> VAR=20
> >> a ~ (-47.98, 178.3),=20
> >> b ~ (-56.62, 56.57),=20
> >> c ~ (-69.1, 179.3)=20
> >> IN=20
> >> PS.MoveTo(b); PS.CurveTo(a, c,
> b)=20
> >> END
> >>=20
> >> "Daniel Alejandro Benavides D." writes:
> >> >Hi:
> >> >I can=3DB4t get how do you get actually to
> draw it,
> >> coould you send a screen =3D
> >> >cast of it or some .juno code to run it?=3D20
> >> >
> >> >--- El mi=3DE9, 4/11/09, Mika Nystrom <mika at async.async.caltech.edu>
> >> escribi=3D
> >> >=3DF3:
> >> >
> >> >> De: Mika Nystrom <mika at async.async.caltech.edu>
> >> >> Asunto: [M3devel] assertion failure in
> Juno
> >> >> Para: m3devel at elegosoft.com
> >> >> Fecha: mi=3DE9rcoles, 4 noviembre, 2009
> 8:27
> >> >> Hello m3devel,
> >> >>=3D20
> >> >> I'm afraid the following is probably an
> orphan
> >> bug, but in
> >> >> case anyone
> >> >> has a clue what's going on, here it is:
> >> >>=3D20
> >> >> 1. Put down three points in Juno, draw a
> curve
> >> using them
> >> >> (looping from
> >> >> one point back to itself, with the other
> two as
> >> control
> >> >> points).
> >> >>=3D20
> >> >> 2. Turn on the grid.
> >> >>=3D20
> >> >> 3. Move one of the control points around,
> so it
> >> snaps to
> >> >> the grid.
> >> >>=3D20
> >> >> 4. Move the other control point to the
> same spot.
> >> >>=3D20
> >> >> What happens on my AMD64_FREEBSD is
> this:
> >> >>=3D20
> >> >> (323)ginger:~/cm3/scripts>Juno
> >> >> Xlib: extension "Generic Event
> Extension"
> >> missing on
> >> >> display "rover:1.0".
> >> >> Assertion failed:
> >> >>
> (XLIB_SEQUENCE_COMPARE(dpy->last_request_read,
> >> <=3D3D,
> >> >> dpy->request)), function
> process_responses,
> >> file
> >> >> xcb_io.c, line 242.
> >> >> Assertion failed:
> >> >>
> (XLIB_SEQUENCE_COMPARE(dpy->last_request_read,
> >> <=3D3D,
> >> >> dpy->request)), function
> process_responses,
> >> file
> >> >> xcb_io.c, line 242.
> >> >> Abort
> >> >> (324)ginger:~/cm3/scripts>
> >> >>=3D20
> >> >> now if it had crashed in Juno's M3 code I
> wouldn't
> >> be
> >> >> concerned, but it
> >> >> seems to be crashing in X code, which
> just sounds
> >> wrong...
> >> >> and it seems
> >> >> to crash in some sort of messaging queue
> code?
> >> =3D20
> >> >>=3D20
> >> >> Mika
> >> >>=3D20
> >> >> P.S. More detail:
> >> >>=3D20
> >> >> (m3gdb) run
> >> >> Starting program:
> /usr/local/cm3/bin/Juno=3D20
> >> >> Can't disable VM GC.
> >> >> Signal
> Stop=20
> >> =3D20
> >> >> Print Pass to program
> >> Description
> >> >> SIG64 =20
> >> No =3D20
> >> >> No
> =20
> >> Yes =3D20
> >> >> Real-time
> event 64
> >> >>=3D20
> >> >> Program received signal SIGUSR2, User
> defined
> >> signal 2.
> >> >> 0x0000000802eb729c in __error () from
> >> /lib/libthr.so.3
> >> >> (m3gdb) handle SIGUSR2 nostop noprint
> >> >> Signal
> Stop=20
> >> =3D20
> >> >> Print Pass to program
> >> Description
> >> >> SIGUSR2
> No=20
> >> =3D20
> >> >> No
> =20
> >> Yes =3D20
> >> >> User defined
> signal 2
> >> >> (m3gdb) cont
> >> >> Continuing.
> >> >> Xlib: extension "Generic Event
> Extension"
> >> missing on
> >> >> display "rover:1.0".
> >> >> Assertion failed:
> >> >>
> (XLIB_SEQUENCE_COMPARE(dpy->last_request_read,
> >> <=3D3D,
> >> >> dpy->request)), function
> process_responses,
> >> file
> >> >> xcb_io.c, line 242.
> >> >> Assertion failed:
> >> >>
> (XLIB_SEQUENCE_COMPARE(dpy->last_request_read,
> >> <=3D3D,
> >> >> dpy->request)), function
> process_responses,
> >> file
> >> >> xcb_io.c, line 242.
> >> >>=3D20
> >> >> Program received signal SIGABRT,
> Aborted.
> >> >> 0x000000080300ea9c in thr_kill () from
> >> /lib/libc.so.7
> >> >> (m3gdb) where
> >> >> #0 0x000000080300ea9c in thr_kill
> () from
> >> >> /lib/libc.so.7
> >> >> #1 0x000000080309df8b in abort ()
> from
> >> >> /lib/libc.so.7
> >> >> #2 0x0000000803085f55 in __assert
> () from
> >> >> /lib/libc.so.7
> >> >> #3 0x0000000802ba7451 in
> process_responses
> >> () from
> >> >> /usr/local/lib/libX11.so.6
> >> >> #4 0x0000000802ba7cc7 in
> _XEventsQueued ()
> >> from
> >> >> /usr/local/lib/libX11.so.6
> >> >> #5 0x0000000802b91b8b in
> XEventsQueued ()
> >> from
> >> >> /usr/local/lib/libX11.so.6
> >> >> #6 0x0000000801268b1b in
> AdjustCoverage
> >> (xcon=3D3DInvalid
> >> >> C/C++ type code 26 in symbol table.
> >> >> ) at ../src/xvbt/XClientF.m3:362
> >> >> #7 0x000000080124dfb5 in Messenger
> >> (self=3D3DInvalid
> >> >> C/C++ type code 26 in symbol table.
> >> >> ) at ../src/xvbt/XMessenger.m3:108
> >> >> #8 0x0000000801aeb7b3 in RunThread
> >> (me=3D3DInvalid C/C++
> >> >> type code 29 in symbol table.
> >> >> ) at
> ../src/thread/PTHREAD/ThreadPThread.m3:509
> >> >> #9 0x0000000801aeb569 in
> ThreadBase
> >> (param=3D3DInvalid
> >> >> C/C++ type code 35 in symbol table.
> >> >> ) at
> ../src/thread/PTHREAD/ThreadPThread.m3:490
> >> >> #10 0x0000000802ead4d1 in pthread_getprio
> () from
> >> >> /lib/libthr.so.3
> >> >> #11 0x0000000000000000 in ?? ()
> >> >> (m3gdb)=3D20
> >> >> (m3gdb) up 6
> >> >> #6 0x0000000801268b1b in
> AdjustCoverage
> >> >> (xcon=3D3D16_000000080377a2c0, d=3D3D1)
> at
> >> >> ../src/xvbt/XClientF.m3:362
> >> >> 362
> IF
> >> >> X.XEventsQueued(xcon.dpy,
> X.QueuedAfterReading) #
> >> 0 THEN
> >> >> Current language: auto; currently
> Modula-3
> >> >> (m3gdb) list
> >> >> 357
> RAISES
> >> >> {TrestleComm.Failure} =3D3D
> >> >> 358 BEGIN
> >> >> 359
> TRY
> >> >> 360 =3D20
> >> >> INC(xcon.coverage, d);
> >> >> 361
> IF
> >> xcon.coverage
> >> >> =3D3D 0 THEN X.XFlush(xcon.dpy) END;
> >> >> 362
> IF
> >> >> X.XEventsQueued(xcon.dpy,
> X.QueuedAfterReading) #
> >> 0 THEN
> >> >> 363 =3D20
> >> >>
> Thread.Signal(xcon.qNonEmpty)
> >> >> 364
> END;
> >> >> 365
> EXCEPT
> >> X.Error
> >> >> =3D3D> RAISE TrestleComm.Failure END;
> >> >> 366 END
> >> AdjustCoverage;
> >> >> (m3gdb) print xcon.dpy
> >> >> $1 =3D3D 16_000000080389f000
> >> >>=3D20
> >> >>=3D20
> >> >>=3D20
> >> >> =3D0A=3D0A=3D0A
> =20
> >> =0A=0A=0A
>
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