From fa452a48d65f0128af0ffc2ea7a7c392b9f2cbc7 Mon Sep 17 00:00:00 2001
From: Benoit Daloze <eregontp@gmail.com>
Date: Fri, 24 Feb 2023 18:42:23 +0100
Subject: [PATCH] Run isolated specs on the oldest CRuby too

---
 .github/workflows/ci.yml                        | 6 +++++-
 lib/concurrent-ruby/concurrent/atomic/locals.rb | 3 +--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0efb752a4..01be2df2b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,13 +33,17 @@ jobs:
   isolated:
     name: "Test isolated"
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: [ 2.3, 3.2 ] # oldest and latest CRuby
     env:
       RUBYOPT: '-w'
     steps:
       - uses: actions/checkout@v3
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2
+          ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
       - run: bundle exec rake compile
       - run: bundle exec rake spec:isolated
diff --git a/lib/concurrent-ruby/concurrent/atomic/locals.rb b/lib/concurrent-ruby/concurrent/atomic/locals.rb
index 86186dcbf..0a276aedd 100644
--- a/lib/concurrent-ruby/concurrent/atomic/locals.rb
+++ b/lib/concurrent-ruby/concurrent/atomic/locals.rb
@@ -1,8 +1,7 @@
+require 'fiber'
 require 'concurrent/utility/engine'
 require 'concurrent/constants'
 
-require 'fiber'
-
 module Concurrent
   # @!visibility private
   # @!macro internal_implementation_note