[ruby-dev:50997] [Ruby master Bug#17494] ruby is hanged when using activesupport + rspec + rspec-parameterized

[nobu@ruby-lang.org]

Issue #17494 has been updated by nobu (Nobuyoshi Nakada).


This patch seems to avoid the loop for the time being.

```diff
diff --git i/class.c w/class.c
index a62ae669f84..61f3ece40f4 100644
--- i/class.c
+++ w/class.c
@@ -1369,7 +1369,7 @@ method_entry_i(ID key, VALUE value, void *data)
 
     if (me->def->type == VM_METHOD_TYPE_REFINED) {
 	VALUE owner = me->owner;
-	me = rb_resolve_refined_method(Qnil, me);
+	me = rb_method_entry_with_refinements(owner, me->called_id, NULL);
 	if (!me) return ID_TABLE_CONTINUE;
 	if (!arg->recur && me->owner != owner) return ID_TABLE_CONTINUE;
     }
```


----------------------------------------
Bug #17494: ruby is hanged when using activesupport + rspec + rspec-parameterized
https://bugs.ruby-lang.org/issues/17494#change-90081

* Author: sue445 (Go Sueyoshi)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.0.0p0
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
----------------------------------------
# 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 "rspec-parameterized", "0.4.2"
```

## spec file
``` ruby
require "active_support/all"
require "rspec-parameterized"

describe "CLI" do
  subject do
    # Expected error, but actual hunged here
    cli.foo # <- hunged here
  end

  it { expect { subject }.to raise_error }
end

xdescribe "GitlabMrRelease::Project" do
  describe "#api_version" do
    using RSpec::Parameterized::TableSyntax

    where(:api_endpoint, :expected) do
      "http://example.com/api/v4/" | 4
    end

    with_them do
      # it { should eq expected }
    end
  end
end
```

all codes are here.

https://github.com/sue445/ruby_3_0_0_bug_report_20201231

# Expected
spec is successful (This is the behavior up to ruby 2.7.2)

# Actual
hunged at line 7





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