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

[Pip Cet <pipcet@protonmail.com>]

"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