GNU bug report logs - #76237
31.0.50; feature/igc: crash #1, 2025-02-12

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Message #32 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Pip Cet <pipcet <at> protonmail.com>
To: Oliver Reiter <oliver.reiter <at> snapdragon.cc>
Cc: bug-gnu-emacs <at> gnu.org, 76237 <at> debbugs.gnu.org
Subject: Re: bug#76237: 31.0.50; feature/igc: crash #1, 2025-02-12
Date: Thu, 13 Feb 2025 14:12:23 +0000

"Oliver Reiter" <oliver.reiter <at> snapdragon.cc> writes:

> Pip Cet <pipcet <at> protonmail.com> writes:
>
>> (gdb) p main_thread.s.bc
>>
>> then
>>
>> (gdb) p bc_next_frame (main_thread.s.bc.fp)
>>
>
> (gdb) p main_thread.s.bc
> $1 = {fp = 0x7fffdf3ff710, stack = 0x7fffdf3ff010 "", stack_end = 0x7fffdf7ff010 ""}
> (gdb) p bc_next_frame (main_thread.s.bc.fp)
> You can't do that without a process to debug.

(gdb) p main_thread.s.bc.fp->next_stack

might work.

>> try p *(struct Lisp_String *)0x00007fffec69dd20, maybe
>>
> (gdb) p *(struct Lisp_String *)0x00007fffec69dd20
> $2 = {gc_header = {v = 21508862745, gcaligned = 25 '\031'}, u = {s = {size = 18, size_byte = -1,
>       intervals = 0x0, data = 0x7fffec69e138 "\n\n(fn FORM FULL-P)"}, next = 0x12,
>     gcaligned = 18 '\022'}}

Okay, that's probably internal-macroexpand-for-load.

Still investigating the potential unmarked bytecode stack issue.

Thanks!

Pip

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