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bug#40225: 27.0.90; abort with apparent stack explosion in lsp-mode


From: Eli Zaretskii
Subject: bug#40225: 27.0.90; abort with apparent stack explosion in lsp-mode
Date: Wed, 25 Mar 2020 18:20:39 +0200

> From: Valtteri Vuorikoski <address@hidden>
> Date: Wed, 25 Mar 2020 16:03:35 +0200
> 
> Emacs crashes 1-3 times a day with SIGABRT, usually when editing a
> buffer in lsp-mode. There is no sure way to reproduce the crash, but it
> usually appears after a few hours of using lsp-mode and usually when
> scrolling the buffer.
> 
> I haven't been able to reproduce this from emacs -Q because it requires
> several hours of heavy use to appear, and I can't get much done
> with -Q.
> 
> This crash never happened with Emacs 26.1.
> 
> Possible related: gc-cons-threshold is set to 16MB (ddskk is very slow
> with the default value).
> 
> gdb stack trace looks like stack was exhausted (sorry, no bt
> full/xbacktrace, I'll try to get those on next crash):

SIGABRT is unlikely to be caused by stack overflow.  Stack overflow
usually causes SIGSEGV.

Can you please show the full crash message, including the "program
received signal SIGABRT" part?

Also, this is an optimized build, so the backtrace is not really
reliable.  Can you build Emacs without optimizations and show a
backtrace from there (assuming it still crashes in the same manner
when built that way)?

Thanks.





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