From cdc0a02a458497fd16156f21e34613ae4504fe3e Mon Sep 17 00:00:00 2001
From: Alex Kotov <kotovalexarian@gmail.com>
Date: Thu, 3 Feb 2022 14:44:51 +0500
Subject: [PATCH] mruby: freeze ntoa results

---
 pkgs/mruby/src/ntoa.c   | 12 ++++++------
 pkgs/mruby/test/ntoa.rb |  4 ++--
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/pkgs/mruby/src/ntoa.c b/pkgs/mruby/src/ntoa.c
index 999bec0..a0fce65 100644
--- a/pkgs/mruby/src/ntoa.c
+++ b/pkgs/mruby/src/ntoa.c
@@ -59,7 +59,7 @@ mrb_value rb_KernAux_utoa(mrb_state *mrb, mrb_value self)
 
     mrb_value result = mrb_str_new_lit(mrb, "");
     result = mrb_str_cat_cstr(mrb, result, buffer);
-    return result;
+    return mrb_obj_freeze(mrb, result);
 }
 
 mrb_value rb_KernAux_itoa(mrb_state *mrb, mrb_value self)
@@ -75,7 +75,7 @@ mrb_value rb_KernAux_itoa(mrb_state *mrb, mrb_value self)
 
     mrb_value result = mrb_str_new_lit(mrb, "");
     result = mrb_str_cat_cstr(mrb, result, buffer);
-    return result;
+    return mrb_obj_freeze(mrb, result);
 }
 
 mrb_value rb_KernAux_utoa10(mrb_state *mrb, mrb_value self)
@@ -95,7 +95,7 @@ mrb_value rb_KernAux_utoa10(mrb_state *mrb, mrb_value self)
 
     mrb_value result = mrb_str_new_lit(mrb, "");
     result = mrb_str_cat_cstr(mrb, result, buffer);
-    return result;
+    return mrb_obj_freeze(mrb, result);
 }
 
 mrb_value rb_KernAux_itoa10(mrb_state *mrb, mrb_value self)
@@ -110,7 +110,7 @@ mrb_value rb_KernAux_itoa10(mrb_state *mrb, mrb_value self)
 
     mrb_value result = mrb_str_new_lit(mrb, "");
     result = mrb_str_cat_cstr(mrb, result, buffer);
-    return result;
+    return mrb_obj_freeze(mrb, result);
 }
 
 mrb_value rb_KernAux_utoa16(mrb_state *mrb, mrb_value self)
@@ -130,7 +130,7 @@ mrb_value rb_KernAux_utoa16(mrb_state *mrb, mrb_value self)
 
     mrb_value result = mrb_str_new_lit(mrb, "");
     result = mrb_str_cat_cstr(mrb, result, buffer);
-    return result;
+    return mrb_obj_freeze(mrb, result);
 }
 
 mrb_value rb_KernAux_itoa16(mrb_state *mrb, mrb_value self)
@@ -145,7 +145,7 @@ mrb_value rb_KernAux_itoa16(mrb_state *mrb, mrb_value self)
 
     mrb_value result = mrb_str_new_lit(mrb, "");
     result = mrb_str_cat_cstr(mrb, result, buffer);
-    return result;
+    return mrb_obj_freeze(mrb, result);
 }
 
 int convert_base(mrb_state *mrb, mrb_value base_rb)
diff --git a/pkgs/mruby/test/ntoa.rb b/pkgs/mruby/test/ntoa.rb
index 140c174..3209ef7 100644
--- a/pkgs/mruby/test/ntoa.rb
+++ b/pkgs/mruby/test/ntoa.rb
@@ -2,7 +2,7 @@ def test_utoa(number, base, expected)
   result = KernAux.utoa(number, base)
 
   assert_true result.instance_of? String
-  #assert_true result.frozen?
+  assert_true result.frozen?
   assert_equal expected, result
 end
 
@@ -10,7 +10,7 @@ def test_itoa(number, base, expected)
   result = KernAux.itoa(number, base)
 
   assert_true result.instance_of? String
-  #assert_true result.frozen?
+  assert_true result.frozen?
   assert_equal expected, result
 end