[ruby-core:123268] [Ruby Bug#21607] require 'concurrent-ruby' causes segfault with Ruby 3.4.6 on linux/i686

["satadru (Satadru Pramanik) via ruby-core" <ruby-core@ml.ruby-lang.org>]

Issue #21607 has been updated by satadru (Satadru Pramanik).


Hello all, a build from earlier this summer's 3.4 branch using the current bundled gems also gave the same error when I built that two days ago. 

The only other difference might be that we are using GCC 15 now.

But I'd also note that this builds fine and appears to work without issue on 32-bit armv7l as well as on x86_64, and those builds use GCC 15 too. 

----------------------------------------
Bug #21607: require 'concurrent-ruby' causes segfault with Ruby 3.4.6 on linux/i686
https://bugs.ruby-lang.org/issues/21607#change-114633

* Author: satadru (Satadru Pramanik)
* Status: Open
* Assignee: ractor
* ruby -v: ruby 3.4.6 (2025-09-16 revision dbd83256b1) +PRISM [i686-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: REQUIRED
----------------------------------------
As mentioned at https://github.com/ruby/ruby/pull/14532#issuecomment-3288983469

chronos@buppie-i686:2.23 M58 /usr/local/lib/crew/packages (master >|SPARSE)$ ruby -e "require 'concurrent-ruby' ; puts 'success'"
Segmentation fault 

This causes a segfault on i686 only on our Chromebrew/i686 systems. armv7l and x86_64 do not have this issue.

This may be linked to the update to prism 1.5.x?


Docker reproducer on our i686 ChromeOS Milestone 58 based container image:

docker run --init --platform linux/386 --rm --net=host -v $(pwd):/output -h $(hostname)-i686 --tmpfs /tmp  --ulimit "nofile=$(ulimit -Sn):$(ulimit -Hn)" -it satmandu/crewbuild:alex-i686.m58

# Note the lack of an issue with 3.4.5 with this command:
ruby -e "require 'concurrent-ruby' ; puts 'success'"

# In that container, upgrade ruby to 3.4.6:
CREW_REPO=https://github.com/chromebrew/chromebrew.git CREW_BRANCH=updater-ruby_3.4.6 crew update \
&& yes | crew upgrade

# Then run the breaking command:
ruby -e "require 'concurrent-ruby' ; puts 'success'"

# Note the segfault.


---Files--------------------------------
i686-ruby-github-action-build-job-log.txt (298 KB)


-- 
https://bugs.ruby-lang.org/
______________________________________________
 ruby-core mailing list -- ruby-core@ml.ruby-lang.org
 To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org
 ruby-core info -- https://ml.ruby-lang.org/mailman3/lists/ruby-core.ml.ruby-lang.org/