Re: [scratch/igc] 985247b6bee crash on Linux, KDE, Wayland

[Pip Cet]

"Eval EXEC" <execvy@gmail.com> writes:

> Pip Cet <pipcet@protonmail.com> writes:
>
>> "Eval EXEC" <execvy@gmail.com> writes:
>>
>>>> Thanks, and sorry you're seeing so many crashes.  It's stable here, so
>>>> we're going to need your help debugging this :-)
>>>
>>> Thanks for the update. No problem. I'm really happy to debug with you all.
>>> 全世界 Emacs  用户联合起来， Make Emacs Great Again!
>>
>> That's great :-)
>>
>>>> Did you use any special options or patches when building mps (link time
>>>> optimization or -O3, in particular)?
>>>
>>> No special options or patches
>>
>>>> This is the cons cell itself (the IGC header is what "cons" points to).
>>>>
>>>> Please also run
>>>>
>>>> (gdb) x/64gx 0x7f08addd0600
>>> It's
>>> (gdb) x/64gx 0x7f08addd0600
>>> 0x7f08addd0600: 0x00007f08addd063b      0x00000003df45210d
>>> 0x7f08addd0610: 0x0000000000000000      0x00007f08addd0653
>>> 0x7f08addd0620: 0x00000003df45240d      0x0000000000012638
>>
>> We need to look up a few builtin symbols: 0x12638 is the first one,
>> corresponding to symbol index 1345.
>>
>>> 0x7f08addd0630: 0x00007f08addd066b      0x00000003df44f80d
>>> 0x7f08addd0640: 0x0000000000000000      0x00007f08addd0683
>>> 0x7f08addd0650: 0x00000003df45220d      0x000000000000a5d0
>>
>> 0xa5d0 is the next one, and that's index 758.
>>
>>> 0x7f08addd0660: 0x00007f08addd069b      0x00000003df45250d
>>> 0x7f08addd0670: 0x0000000000000038      0x00007f08addd06b3
>>
>> 0x38 is t.
>>
>>> 0x7f08addd0680: 0x00000003df44f90d      0x000000000000a5d0
>>> 0x7f08addd0690: 0x00007f08addd06cb      0x00000003df45230d
>>> 0x7f08addd06a0: 0x00007f08addd06e3      0x0000000000000000
>>> 0x7f08addd06b0: 0x00000003df45260d      0x00007f0889546b70
>>> 0x7f08addd06c0: 0x00007f08936d87d3      0x00000003df44fa0d
>>> 0x7f08addd06d0: 0x00007f08936ceb33      0x0000000000000000
>>> 0x7f08addd06e0: 0x00000003df44e70d      0x0000000000001538
>>
>> 0x1538 is the last one, and that's index 97.
>>
>> In gdb, can you run
>>
>> (gdb) print defsym_name[97]
>> (gdb) print defsym_name[758]
>> (gdb) print defsym_name[1345]
>>
>> to see which symbol corresponds to each index?
>>
>> Thanks!
>>
>> Pip
> It's
> (gdb) print defsym_name[97]
> $9 = <optimized out>
> (gdb) print defsym_name[758]
> $10 = <optimized out>
> (gdb) print defsym_name[1345]
> $11 = <optimized out>

Can you try what Eli suggested?

(gdb) p 0xa5d0
(gdb) xsymbol
(gdb) p 0x1538
(gdb) xsymbol
(gdb) p 0x12638
(gdb) xsymbol

If that also fails, can you find the globals.h that was generated when
Emacs was built and find out which iQ... is 97, 758, and 1345?

Thanks!

Pip