Re: Core dump with combination of tie, fermata and some pitches

[Thomas Morley]

2016-09-02 20:51 GMT+02:00 Thomas Morley <address@hidden>:
> 2016-09-02 20:12 GMT+02:00 David Kastrup <address@hidden>:
>> Timothy Lanfear <address@hidden> writes:
>>
>>> On 02/09/16 17:31, David Kastrup wrote:
>>>> Timothy Lanfear <address@hidden> writes:
>>>>
>>>>> Bug appears in 2.19.46 and .47. Ubuntu 16.04, 64-bit.
>>>>>
>>>>> The first line provokes a core dump. The second line is perhaps the
>>>>> right syntax for this construction and works fine, but I'm reporting
>>>>> in case there is something here that needs investigating.
>>>>>
>>>>> \version "2.19.46"
>>>>>
>>>>> {
>>>>>    <b' gis'>2\fermata ~ b'2  % core dump
>>>>>    <b'~ gis'>2\fermata b'2   % move tie inside chord, OK
>>>>>    <b' g'>2\fermata ~ b'2    % gis => g, OK
>>>>>    <b' gis'>2 ~ b'2          % delete fermata, OK
>>>>>    <b' gis'>2\fermata b'2    % delete tie, OK
>>>>> }
>>>> Not here.  Which compilations are you using?  I suspect some compiler
>>>> bug or overoptimization.
>>>>
>>>
>>> I'm using the pre-built package.
>>>
>>> address@hidden /usr/local/lilypond-2.19.46/bin/lilypond tmp.ly
>>> GNU LilyPond 2.19.46
>>> Processing `tmp.ly'
>>> Parsing...
>>> Interpreting music...
>>> Preprocessing graphical objects...Segmentation fault (core dumped)
>>
>> Huh.  Don't remember the compiler version used currently in Gub.  I'll
>> try a native compilation with gcc 6.x 64-bit here and see where this
>> gets me.
>>
>> Man, we really have a lot of infrastructure hickups lately.
>>
>> --
>> David Kastrup
>
>
>
> I can confirm the bug with a build from
> commit d6e93146b9f25e914373caeced7314237cc53e2f
> (Don't remember which optimizing-option I used, though)
>
> gdb says
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000000004ae5ab in Grob::get_offset (a=X_AXIS, this=0x0) at
> /home/hermann/lilypond-git/lily/grob.cc:401
> 401      if (dim_cache_[a].offset_)
>
> complete output from
> (gdb) bt
> attached.
>
> Cheers,
>   Harm

Being on 64-bit Ubuntu 16.04 with

gcc --version
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.2) 5.4.0 20160609