From 37d65069729432698ee60fd9d80be3830b4ad7fa Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Mon, 14 Mar 2022 07:22:01 +0900
Subject: [PATCH] string.c: remove unused API `mrb_str_strlen()`.

Compatibility macro is provided for safety.
---
 include/mruby/string.h |  3 ++-
 src/string.c           | 11 -----------
 2 files changed, 2 insertions(+), 12 deletions(-)

diff --git a/include/mruby/string.h b/include/mruby/string.h
index 3a8d73a70..b172a3263 100644
--- a/include/mruby/string.h
+++ b/include/mruby/string.h
@@ -102,7 +102,6 @@ struct RStringEmbed {
 #define RSTRING_LEN(s)       RSTR_LEN(RSTRING(s))
 #define RSTRING_CAPA(s)      RSTR_CAPA(RSTRING(s))
 #define RSTRING_END(s)       (RSTRING_PTR(s) + RSTRING_LEN(s))
-MRB_API mrb_int mrb_str_strlen(mrb_state*, struct RString*);
 #define RSTRING_CSTR(mrb,s)  mrb_string_cstr(mrb, s)
 
 #define MRB_STR_SHARED    1
@@ -335,6 +334,8 @@ MRB_API const char *mrb_string_value_cstr(mrb_state *mrb, mrb_value *str);
 MRB_API const char *mrb_string_value_ptr(mrb_state *mrb, mrb_value str);
 /* obsolete: use RSTRING_LEN() */
 MRB_API mrb_int mrb_string_value_len(mrb_state *mrb, mrb_value str);
+/* obsolete: substituted by a macro; shall be removed */
+#define mrb_str_strlen(mrb, s) strlen(RSTR_PTR(s))
 
 /**
  * Duplicates a string object.
diff --git a/src/string.c b/src/string.c
index b1dc1e1e5..41d14bd32 100644
--- a/src/string.c
+++ b/src/string.c
@@ -696,17 +696,6 @@ str_rindex(mrb_state *mrb, mrb_value str, mrb_value sub, mrb_int pos)
   }
 }
 
-MRB_API mrb_int
-mrb_str_strlen(mrb_state *mrb, struct RString *s)
-{
-  mrb_int max = RSTR_LEN(s);
-  char *p = RSTR_PTR(s);
-
-  if (!p) return 0;
-  check_null_byte(mrb, s);
-  return max;
-}
-
 #ifdef _WIN32
 #include <windows.h>