Ruby Issue Tracking System

05/15/2026

05:26 PM Ruby Feature #22068: Adding post-quantum cryptography (PQC) support across Ruby standard libraries

hsbt (Hiroshi SHIBATA) wrote in #note-4:
> Thanks for your detailed summary. I will handle rubygems and bundler.
Thanks! jaruga (Jun Aruga)

05:26 PM Ruby Feature #22068: Adding post-quantum cryptography (PQC) support across Ruby standard libraries

> As I heard from my colleagues working for OpenSSL, that SLH-DSA is not ready to be used, we can ignore SLH-DSA for now.
Sorry, the above was wrong or outdated information.
SLH-DSA is ready to use for signature use case (but not for... jaruga (Jun Aruga)

05/13/2026

02:43 PM Ruby Feature #22068 (Open): Adding post-quantum cryptography (PQC) support across Ruby standard libraries

## Summary and motivation
Post-quantum cryptography (PQC) means cryptography algorithm which people can safely use after (post) quantum computing is practically used in the future. By using the quantum computing which is much more pow... jaruga (Jun Aruga)

09/04/2025

03:14 PM Ruby Bug #21534 (Closed): ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

This issue was fixed by the above PR.
jaruga (Jun Aruga)

01:55 PM Ruby Bug #21534 (Assigned): ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

jaruga (Jun Aruga)

09/03/2025

05:11 PM Ruby Bug #21534: ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

All right! I am working on the following PR to fix this issue.
https://github.com/ruby/ruby/pull/14435
jaruga (Jun Aruga)

10:08 AM Ruby Bug #21534: ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

> vm_core.h:2017: Assertion Failed: rb_current_execution_context:ec == rb_current_ec_noinline()
I checked the above assertion failure at the ruby/ruby commit <f3206cc79bec2fd852e81ec56de59f0a67ab32b7>. Perhaps, should I apply a ppc64l... jaruga (Jun Aruga)

09/01/2025

12:34 PM Ruby Bug #21534: ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

I want to lower my priority for this task, because the issue only can happen on the configuring with cppflags=-DRUBY_DEBUG and -O3. The case is not a typical workflow.
And if I find the root cause of this issue, I need to prepare a mi... jaruga (Jun Aruga)

08/20/2025

10:28 AM Ruby Bug #21534: ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

I found the following text in my assumption. we should use `RUBY_DEBUG` macro without optimization?
https://github.com/ruby/ruby/blob/683dd92de82bd8c93eee6860ebcd3f6336ad0c04/doc/contributing/building_ruby.md?plain=1#L275
> You sho... jaruga (Jun Aruga)

08/18/2025

03:30 PM Ruby Bug #21534: ppc64le bootstraptest/test_ractor.rb aborted (core dumped) on configure cppflags=-DRUBY_DEBUG and -O3

I tested at the latest master branch commit <7ddc53bc0c57b1c079e40a74d233f537111b3e92> below.
Interestingly, the above error only happens in the case of the `./configure cppflags=-DRUBY_DEBUG optflags=-O3`.
```
$ uname -m
ppc64le... jaruga (Jun Aruga)