4 files changed, 46 insertions, 5 deletions
diff --git a/spec/ruby/core/proc/fixtures/common.rb b/spec/ruby/core/proc/fixtures/common.rb
index 6e27a2dee7..dfe67d7ba8 100644
--- a/spec/ruby/core/proc/fixtures/common.rb
+++ b/spec/ruby/core/proc/fixtures/common.rb
@@ -32,7 +32,28 @@ module ProcSpecs
       @second = b
     end
 
-    attr_reader :first, :second
+    attr_reader :first, :second, :initializer
+
+    def initialize_copy(other)
+      super
+      @initializer = :copy
+      @first = other.first
+      @second = other.second
+    end
+
+    def initialize_dup(other)
+      super
+      @initializer = :dup
+      @first = other.first
+      @second = other.second
+    end
+
+    def initialize_clone(other, **options)
+      super
+      @initializer = :clone
+      @first = other.first
+      @second = other.second
+    end
   end
 
   class Arity
diff --git a/spec/ruby/core/proc/fixtures/proc_aref.rb b/spec/ruby/core/proc/fixtures/proc_aref.rb
new file mode 100644
index 0000000000..8ee355b14c
--- /dev/null
+++ b/spec/ruby/core/proc/fixtures/proc_aref.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: false
+module ProcArefSpecs
+  def self.aref
+    proc {|a| a }["sometext"]
+  end
+
+  def self.aref_freeze
+    proc {|a| a }["sometext".freeze]
+  end
+end
diff --git a/spec/ruby/core/proc/fixtures/proc_aref_frozen.rb b/spec/ruby/core/proc/fixtures/proc_aref_frozen.rb
new file mode 100644
index 0000000000..50a330ba4f
--- /dev/null
+++ b/spec/ruby/core/proc/fixtures/proc_aref_frozen.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+module ProcArefFrozenSpecs
+  def self.aref
+    proc {|a| a }["sometext"]
+  end
+
+  def self.aref_freeze
+    proc {|a| a }["sometext".freeze]
+  end
+end
diff --git a/spec/ruby/core/proc/fixtures/source_location.rb b/spec/ruby/core/proc/fixtures/source_location.rb
index 468262e02a..5572094630 100644
--- a/spec/ruby/core/proc/fixtures/source_location.rb
+++ b/spec/ruby/core/proc/fixtures/source_location.rb
@@ -5,7 +5,7 @@ module ProcSpecs
     end
 
     def self.my_lambda
-      lambda { true }
+      -> { true }
     end
 
     def self.my_proc_new
@@ -24,7 +24,7 @@ module ProcSpecs
     end
 
     def self.my_multiline_lambda
-      lambda do
+      -> do
         'a'.upcase
         1 + 22
       end
@@ -43,8 +43,8 @@ module ProcSpecs
     end
 
     def self.my_detached_lambda
-      body = lambda { true }
-      lambda(&body)
+      body = -> { true }
+      suppress_warning {lambda(&body)}
     end
 
     def self.my_detached_proc_new