From 458d6fb15eedaa142c71f120e3a71b84d0938454 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Sat, 5 Nov 2022 00:41:52 -0700
Subject: [PATCH] [ruby/erb] Optimize away the rb_convert_type call using
 RB_TYPE_P

https://github.com/ruby/erb/commit/12058c3784
---
 ext/erb/erb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ext/erb/erb.c b/ext/erb/erb.c
index 1c3371d24e..a103fb30e4 100644
--- a/ext/erb/erb.c
+++ b/ext/erb/erb.c
@@ -76,7 +76,9 @@ optimized_escape_html(VALUE str)
 static VALUE
 erb_escape_html(VALUE self, VALUE str)
 {
-    str = rb_convert_type(str, T_STRING, "String", "to_s");
+    if (!RB_TYPE_P(str, T_STRING)) {
+        str = rb_convert_type(str, T_STRING, "String", "to_s");
+    }
 
     if (rb_enc_str_asciicompat_p(str)) {
         return optimized_escape_html(str);