9 files changed, 9 insertions, 0 deletions
diff --git a/ext/fiddle/lib/fiddle.rb b/ext/fiddle/lib/fiddle.rb
index ae6e299637..5208eb9328 100644
--- a/ext/fiddle/lib/fiddle.rb
+++ b/ext/fiddle/lib/fiddle.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'fiddle.so'
 require 'fiddle/function'
 require 'fiddle/closure'
diff --git a/ext/fiddle/lib/fiddle/closure.rb b/ext/fiddle/lib/fiddle/closure.rb
index beb90ecbe5..0b9adbb60a 100644
--- a/ext/fiddle/lib/fiddle/closure.rb
+++ b/ext/fiddle/lib/fiddle/closure.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module Fiddle
   class Closure
 
diff --git a/ext/fiddle/lib/fiddle/cparser.rb b/ext/fiddle/lib/fiddle/cparser.rb
index 4be82a6ed4..6b9da9fa7c 100644
--- a/ext/fiddle/lib/fiddle/cparser.rb
+++ b/ext/fiddle/lib/fiddle/cparser.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module Fiddle
   # A mixin that provides methods for parsing C struct and prototype signatures.
   #
diff --git a/ext/fiddle/lib/fiddle/function.rb b/ext/fiddle/lib/fiddle/function.rb
index ab7496e944..fcd90dfd26 100644
--- a/ext/fiddle/lib/fiddle/function.rb
+++ b/ext/fiddle/lib/fiddle/function.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module Fiddle
   class Function
     # The ABI of the Function.
diff --git a/ext/fiddle/lib/fiddle/import.rb b/ext/fiddle/lib/fiddle/import.rb
index 34f5d7f81c..7f959ed20b 100644
--- a/ext/fiddle/lib/fiddle/import.rb
+++ b/ext/fiddle/lib/fiddle/import.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'fiddle'
 require 'fiddle/struct'
 require 'fiddle/cparser'
diff --git a/ext/fiddle/lib/fiddle/pack.rb b/ext/fiddle/lib/fiddle/pack.rb
index e4e9542cc0..6301068450 100644
--- a/ext/fiddle/lib/fiddle/pack.rb
+++ b/ext/fiddle/lib/fiddle/pack.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'fiddle'
 
 module Fiddle
diff --git a/ext/fiddle/lib/fiddle/struct.rb b/ext/fiddle/lib/fiddle/struct.rb
index 695a4d2247..233a987269 100644
--- a/ext/fiddle/lib/fiddle/struct.rb
+++ b/ext/fiddle/lib/fiddle/struct.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'fiddle'
 require 'fiddle/value'
 require 'fiddle/pack'
diff --git a/ext/fiddle/lib/fiddle/types.rb b/ext/fiddle/lib/fiddle/types.rb
index 02c1d25a37..8a72635a69 100644
--- a/ext/fiddle/lib/fiddle/types.rb
+++ b/ext/fiddle/lib/fiddle/types.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module Fiddle
   # Adds Windows type aliases to the including class for use with
   # Fiddle::Importer.
diff --git a/ext/fiddle/lib/fiddle/value.rb b/ext/fiddle/lib/fiddle/value.rb
index 8d71e47ce6..ac318cf2c4 100644
--- a/ext/fiddle/lib/fiddle/value.rb
+++ b/ext/fiddle/lib/fiddle/value.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'fiddle'
 
 module Fiddle