From bc48722cee0d5dc9982aed633981b8a8b4885880 Mon Sep 17 00:00:00 2001
From: Lars Kanis <lars@greiz-reinsdorf.de>
Date: Tue, 18 Apr 2023 16:23:32 +0200
Subject: Freeze constant in StructLayoutBuilder

since there's no need to modify it later on
---
 lib/ffi/struct_layout_builder.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/ffi/struct_layout_builder.rb b/lib/ffi/struct_layout_builder.rb
index 4d6a464..5488033 100644
--- a/lib/ffi/struct_layout_builder.rb
+++ b/lib/ffi/struct_layout_builder.rb
@@ -97,7 +97,7 @@ module FFI
 
 
     # List of number types
-    NUMBER_TYPES = [
+    NUMBER_TYPES = FFI.make_shareable([
       Type::INT8,
       Type::UINT8,
       Type::INT16,
@@ -112,7 +112,7 @@ module FFI
       Type::FLOAT64,
       Type::LONGDOUBLE,
       Type::BOOL,
-    ]
+    ])
 
     # @param [String, Symbol] name name of the field
     # @param [Array, DataConverter, Struct, StructLayout::Field, Symbol, Type] type type of the field
-- 
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