Re: [Denemo-devel] Denemo crash

[Andreas Schneider]

Am 05.02.2017 um 22:02 schrieb Andreas Schneider:
> Am 03.02.2017 um 17:47 schrieb Richard Shann:
>> On Thu, 2017-02-02 at 23:33 +0100, Andreas Schneider wrote:
>>> Am 01.02.2017 um 22:48 schrieb Richard Shann:
>>>> yes, but it could be a bug in Denemo that happens not to be
>>> triggered. 
>>>> Can you try executing
>>>> (d-IncreaseGuard) in the Scheme window or CLI and then seeing if it
>>>> crashes? d- IncreaseGaurd will turn off the undo, and this will
>>> indicate
>>>> that the problem is with the Snapshot done before adding the staff.
>>>
>>> After executing (d-IncreaseGuard), the Denemo does not crash any more
>>> when inserting a staff.
>>
>> Well, I've gone over the snapshotting code and done some cleaning and
>> re-coding, commenting and protected against a condition that shouldn't
>> arise. This is now in git.
>> If, with this new version inserting/deleting a staff from that score (I
>> guess it is any score with lyrics) is still crashing it is going to be
>> quite tricky to debug.
>> If you *do* have the current git source code crashing under gdb you
>> could create a breakpoint at line 1176 of select.c which is where the
>> snapshot code ends (you do a Ctrl-C to suspend the program, issue
>>
>> b select.c:1176
>>
>> to insert the break and then the command
>>
>> c
>>
>> to continue the program).
>>
>> Then it should stop on that line when you try to add/delete a staff.
>>
>> If it does stop then issuing 
>>
>> call call_out_to_guile ("(d-Save \"/home/aschneider/JUNKNAME.denemo\")")
>>
>> at the gdb prompt will save the score under the name JUNKNAME.denemo and
>> this may the hold a clue.
> 
> Hmm, it seems not to reach that point. I did as you recommended, yet
> after inserting a new staff Denemo crashes before it reaches the
> breakpoint. Or did you mean I should do that after executing
> (d-IncreaseGuard)?

Oops, I forgot that the package building script automatically strips
binaries, so the executable did not contain debug informations. After
building by hand executing the local denemo binary, I was able to save
the file as recommended. I send it to you in a private mail.

Andreas