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bug#33018: 26.1.50; thread starvation with async processes and accept-pr

From: Basil L. Contovounesios
Subject: bug#33018: 26.1.50; thread starvation with async processes and accept-process-output
Date: Wed, 17 Oct 2018 18:37:00 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Attachment: gdb.txt
Description: Text document

Eli Zaretskii <address@hidden> writes:

> Can you attach a debugger to the wget process that's stuck, and see
> where it is stuck?  You will probably need to rebuild wget with debug
> info, or install one from your package repository (if they offer
> such).  This could give us hints for where to look further.

I did the following:

0. Build wget 1.19.5 from Debian's repositories:
   apt-get build-dep wget
   apt-get source wget
   configure CC='ccache gcc' CFLAGS='-O0 -g3 -ggdb -gdwarf-4 -pipe'
             --config-cache --enable-assert --with-gnu-ld
1. Substitute resulting wget file name in original test.el program
2. emacs26 -Q -l test.el -f test-threads
3. gdb -p <pid of stuck wget>
4. set logging on
5. bt

I attach the resulting gdb.txt log file.



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