Fix spec:valgrind task by adopting ruby_memcheck

.github/workflows/valgrind.yaml

@@ -0,0 +1,42 @@
+name: Memcheck
+
+on: [push, pull_request]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: ${{matrix.ruby}} on ${{matrix.os}}
+    runs-on: ${{matrix.os}}-latest
+    continue-on-error: ${{matrix.experimental}}
+
+    strategy:
+      matrix:
+        os:
+          - ubuntu
+
+        ruby:
+          - "3.2"
+          - "3.3"
+          - "3.4"
+          - "4.0"
+
+        experimental: [false]
+
+        include:
+          - os: ubuntu
+            ruby: head
+            experimental: true
+
+    steps:
+    - uses: actions/checkout@v6
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{matrix.ruby}}
+        bundler-cache: true
+    - name: Install Valgrind
+      run: sudo apt-get install -y valgrind
+    - name: Run tests
+      timeout-minutes: 10
+      run: bundle exec rake spec:valgrind

Rakefile

@@ -48,24 +48,11 @@ namespace :build do
   end
 end
 
-# adapted from http://flavoriffic.blogspot.com/2009/06/easily-valgrind-gdb-your-ruby-c.html
-def specs_command
-  require "find"
-  files = []
-  Find.find("spec") do |f|
-    files << f if File.basename(f) =~ /.*spec.*\.rb$/
-  end
-  cmdline = "#{RUBY} -I.:lib:ext:spec \
-               -e '%w[#{files.join(' ')}].each { |f| require f }'"
-end
-
-namespace :spec do
-  desc "run specs with valgrind"
-  task :valgrind => :compile do
-    system "valgrind --num-callers=15 \
-      --partial-loads-ok=yes --undef-value-errors=no \
-      --tool=memcheck --leak-check=yes --track-fds=yes \
-      --show-reachable=yes #{specs_command}"
+if RUBY_PLATFORM.include?('linux')
+  require 'ruby_memcheck'
+  require 'ruby_memcheck/rspec/rake_task'
+  namespace :spec do
+    RubyMemcheck::RSpec::RakeTask.new(valgrind: :compile)
   end
 end
 

gems.rb

@@ -7,3 +7,7 @@
   gem "bake-gem"
   gem "bake-modernize"
 end
+
+group :development, :test do
+  gem 'ruby_memcheck', '~> 3.0' if RUBY_PLATFORM.include?('linux')
+end