[#123172] [Ruby Bug#21560] RUBY_MN_THREADS=1 causes large performance regression in Puma 7 — "schneems (Richard Schneeman) via ruby-core" <ruby-core@...>

Issue #21560 has been reported by schneems (Richard Schneeman).

13 messages 2025/09/03

[#123197] [Ruby Misc#21566] Transfer Shopify/yjit-bench and speed.yjit.org to ruby/ruby-bench and *.ruby-lang.org — "k0kubun (Takashi Kokubun) via ruby-core" <ruby-core@...>

Issue #21566 has been reported by k0kubun (Takashi Kokubun).

7 messages 2025/09/08

[#123207] [Ruby Bug#21568] Requiring core libraries when already requiring mutliple user defined libraries with the same name can error — "alexalexgriffith (Alex Griffith) via ruby-core" <ruby-core@...>

Issue #21568 has been reported by alexalexgriffith (Alex Griffith).

9 messages 2025/09/10

[#123209] [Ruby Bug#21569] [armv7, musl] SIGBUS in ibf_load_object_float due to unaligned VFP double load when reading IBF — "amacxz (Aleksey Maximov) via ruby-core" <ruby-core@...>

SXNzdWUgIzIxNTY5IGhhcyBiZWVuIHJlcG9ydGVkIGJ5IGFtYWN4eiAoQWxla3NleSBNYXhpbW92

8 messages 2025/09/10

[#123257] [Ruby Misc#21606] DevMeeting-2025-10-23 — "mame (Yusuke Endoh) via ruby-core" <ruby-core@...>

Issue #21606 has been reported by mame (Yusuke Endoh).

9 messages 2025/09/16

[#123261] [Ruby Bug#21607] require 'concurrent-ruby' causes segfault with Ruby 3.4.6 on linux/i686 — "satadru (Satadru Pramanik) via ruby-core" <ruby-core@...>

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

17 messages 2025/09/16

[#123279] [Ruby Misc#21609] Propose Stan Lo (@st0012) as a core committer — "tekknolagi (Maxwell Bernstein) via ruby-core" <ruby-core@...>

SXNzdWUgIzIxNjA5IGhhcyBiZWVuIHJlcG9ydGVkIGJ5IHRla2tub2xhZ2kgKE1heHdlbGwgQmVy

12 messages 2025/09/17

[#123288] [Ruby Bug#21610] Use ec->interrupt_mask to prevent interrupts. — "ioquatix (Samuel Williams) via ruby-core" <ruby-core@...>

SXNzdWUgIzIxNjEwIGhhcyBiZWVuIHJlcG9ydGVkIGJ5IGlvcXVhdGl4IChTYW11ZWwgV2lsbGlh

7 messages 2025/09/18

[#123319] [Ruby Feature#21615] Introduce `Array#values` — "matheusrich (Matheus Richard) via ruby-core" <ruby-core@...>

Issue #21615 has been reported by matheusrich (Matheus Richard).

9 messages 2025/09/23

[#123350] [Ruby Bug#21618] Allow to use the build-in prism version to parse code — "Earlopain (Earlopain _) via ruby-core" <ruby-core@...>

Issue #21618 has been reported by Earlopain (Earlopain _).

15 messages 2025/09/30

[ruby-core:123261] [Ruby Bug#21607] require 'concurrent-ruby' causes segfault with Ruby 3.4.6 on linux/i686

From: "satadru (Satadru Pramanik) via ruby-core" <ruby-core@...>
Date: 2025-09-16 16:21:18 UTC
List: ruby-core #123261
Issue #21607 has been reported by satadru (Satadru Pramanik).

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

* Author: satadru (Satadru Pramanik)
* Status: Open
* ruby -v: ruby 3.4.6 (2025-09-16 revision dbd83256b1) +PRISM [i686-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
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.




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