https://git.ruby-lang.org/ruby.git/commit/?id=7e97ebb6eb

From 7e97ebb6eb392d90fc6e49a16620e71d398f4bdf Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Wed, 13 Apr 2022 09:02:32 +0900
Subject: Enforce literals on the second arguments

---
 string.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/string.c b/string.c
index a31d53c4c3..938edd9cdf 100644
--- a/string.c
+++ b/string.c
@@ -3094,7 +3094,7 @@ str_buf_cat(VALUE str, const char *ptr, long len) https://github.com/ruby/ruby/blob/trunk/string.c#L3094
     return str;
 }
 
-#define str_buf_cat2(str, ptr) str_buf_cat((str), (ptr), strlen(ptr))
+#define str_buf_cat2(str, ptr) str_buf_cat((str), (ptr), rb_strlen_lit(ptr))
 
 VALUE
 rb_str_cat(VALUE str, const char *ptr, long len)
-- 
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