Ruby Issue Tracking System

01/15/2026

12:16 PM Ruby Bug #21820: "vm_call_cfunc: cfp consistency error" occurs during rdoc generation when installing Ruby 4.0.0 via rbenv on Ubuntu 24.04

mame (Yusuke Endoh) wrote in #note-4:
> Could you please try to build ruby 4.0.1 without rbenv?
SEGV in `make install`
<details>
<summary>log</summary>
```
[sue445@sue445-win] [01-15 20:44:10] $ make install
file2lastrev... sue445 (Go Sueyoshi)

01/13/2026

04:45 PM Ruby Bug #21820: "vm_call_cfunc: cfp consistency error" occurs during rdoc generation when installing Ruby 4.0.0 via rbenv on Ubuntu 24.04

> I gave it a try but could not reproduce the issue on Ubuntu 24.04 running in Docker.
Umm...
I forgot to mention this earlier, but to be precise, the environment where I encountered the error is Ubuntu 24.04 on WSL (Windows 11).
... sue445 (Go Sueyoshi)

01/03/2026

03:20 AM Ruby Bug #21820 (Open): "vm_call_cfunc: cfp consistency error" occurs during rdoc generation when installing Ruby 4.0.0 via rbenv on Ubuntu 24.04

This is transferred from https://github.com/rbenv/ruby-build/discussions/2594#discussioncomment-15394211
# My environment
``` shell
[sue445@sue445-win] [12-31 23:34:49] $ lsb_release -a
No LSB modules are available.
Distributor ID... sue445 (Go Sueyoshi)

11/21/2025

03:13 AM Ruby Revision a26f8235 (git): [ruby/rubygems] Add go_gem/rake_task for Go native extention gem skeleton

https://github.com/ruby/rubygems/commit/64f92d2da0 sue445 (Go Sueyoshi)

03:13 AM Ruby Revision 9aa09b46 (git): [ruby/rubygems] Fixed RuboCop offense in Rakefile generated by `bundle gem`

```
Offenses:
Rakefile:18:1: C: [Correctable] Layout/EmptyLines: Extra blank line detected.
Diff:
@@ -11,4 +11,5 @@
ext.lib_dir = "lib/test_gem"
end
+
task default: :compile
https://github.com/ruby/rubygems/commit/8c414729df sue445 (Go Sueyoshi)

01/22/2021

05:41 AM Ruby Bug #17494: ruby is hanged when using activesupport + rspec + rspec-parameterized

# Workaround
`require` only minimal files.
In this case, stop to require "active_support/all"
e.g.
``` ruby
# require "active_support/all"
require "active_support/core_ext/time/zones"
require "active_support/core_ext/array... sue445 (Go Sueyoshi)

12/31/2020

11:47 AM Ruby Bug #17494 (Closed): ruby is hanged when using activesupport + rspec + rspec-parameterized

# Example code
## Gemfile
```ruby
# frozen_string_literal: true
source "https://rubygems.org"
git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
gem "activesupport", "6.1.0"
gem "rspec", "3.10.0"
gem "rspe... sue445 (Go Sueyoshi)

01/01/2020

12:08 PM Ruby Bug #16469 (Closed): Wrong warning message at `URI.encode` and `URI.decode`

# Sample code
``` ruby
enc_uri = URI.encode("http://example.com/?a=\11\15")
URI.decode(enc_uri)
```
# Actual
```ruby
irb(main):005:0> enc_uri = URI.encode("http://example.com/?a=\11\15")
(irb):3: warning: URI.escape is obsolete... sue445 (Go Sueyoshi)

01/10/2019

06:57 AM Ruby Bug #15521: encoding is missed when using `CSV.generate`

Thank you.
I used `ruby/csv@master`, I confirmed this is fixed sue445 (Go Sueyoshi)

06:20 AM Ruby Bug #15521 (Closed): encoding is missed when using `CSV.generate`

# Sample code
~~~ ruby
require "csv"
rows = [
["a", "b", "c", "d", "e"],
["あ", "い", "う", "え", "お"],
]
str = CSV.generate do |csv|
rows.each do |row|
csv << row
end
end
p str
p str.encoding
~~~
# Expec... sue445 (Go Sueyoshi)