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bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs
From: |
Michael Welsh Duggan |
Subject: |
bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs |
Date: |
Wed, 24 Mar 2021 22:19:35 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
martin rudalics <rudalics@gmx.at> writes:
>>> The attached one should make more sense. Please use that.
>>
>> I did, and the SEGFAULT happened fairly shortly afterward. The error
>> did not trigger, so the cause is still unknown. I'll keep the gdb
>> session around, but that backtrace is pretty much the same.
>
> I'm not surprised. The check for `replace-buffer-in-windows' does
> pretty much the same as Eli's approach. You just don't have to run
> Emacs in the debugger in order to use it.
>
> Maybe try now:
>
> diff --git a/src/buffer.c b/src/buffer.c
> index 8e33162989..9ca5731bcf 100644
> --- a/src/buffer.c
> +++ b/src/buffer.c
> @@ -2151,6 +2151,9 @@ set_buffer_internal_1 (register struct buffer *b)
>
> BUFFER_CHECK_INDIRECTION (b);
>
> + if (!BUFFER_LIVE_P (b))
> + error ("Selecting deleted buffer");
> +
> old_buf = current_buffer;
> current_buffer = b;
> last_known_column_point = -1; /* Invalidate indentation cache. */
Okay. Building now and will run until...something happens? Should I be
expecting an Emacs error from this? Should I breakpoint the error()
clause?
--
Michael Welsh Duggan
(md5i@md5i.com)
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, (continued)
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/03/23
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/03/23
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Eli Zaretskii, 2021/03/23
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/03/24
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/03/24
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/03/24
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs,
Michael Welsh Duggan <=
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Eli Zaretskii, 2021/03/25
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/03/29
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Eli Zaretskii, 2021/03/29
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/03/29
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Eli Zaretskii, 2021/03/29
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Eli Zaretskii, 2021/03/29
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Eli Zaretskii, 2021/03/29
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/03/29
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, Michael Welsh Duggan, 2021/03/29
- bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs, martin rudalics, 2021/03/29