change mrb_int to size_t that would take strlen()

include/mruby.h

@@ -244,12 +244,12 @@ mrb_value mrb_funcall(mrb_state*, mrb_value, const char*, int,...);
 mrb_value mrb_funcall_argv(mrb_state*, mrb_value, mrb_sym, int, mrb_value*);
 mrb_value mrb_funcall_with_block(mrb_state*, mrb_value, mrb_sym, int, mrb_value*, mrb_value);
 mrb_sym mrb_intern_cstr(mrb_state*,const char*);
-mrb_sym mrb_intern(mrb_state*,const char*,mrb_int);
-mrb_sym mrb_intern_static(mrb_state*,const char*,mrb_int);
-#define mrb_intern_lit(mrb, lit) mrb_intern_static(mrb, lit, (mrb_int)mrb_strlen_lit(lit))
+mrb_sym mrb_intern(mrb_state*,const char*,size_t);
+mrb_sym mrb_intern_static(mrb_state*,const char*,size_t);
+#define mrb_intern_lit(mrb, lit) mrb_intern_static(mrb, lit, mrb_strlen_lit(lit))
 mrb_sym mrb_intern_str(mrb_state*,mrb_value);
 mrb_value mrb_check_intern_cstr(mrb_state*,const char*);
-mrb_value mrb_check_intern(mrb_state*,const char*,mrb_int);
+mrb_value mrb_check_intern(mrb_state*,const char*,size_t);
 mrb_value mrb_check_intern_str(mrb_state*,mrb_value);
 const char *mrb_sym2name(mrb_state*,mrb_sym);
 const char *mrb_sym2name_len(mrb_state*,mrb_sym,mrb_int*);

src/symbol.c

@@ -35,7 +35,7 @@ KHASH_DECLARE(n2s, symbol_name, mrb_sym, 1)
 KHASH_DEFINE (n2s, symbol_name, mrb_sym, 1, sym_hash_func, sym_hash_equal)
 /* ------------------------------------------------------ */
 static mrb_sym
-sym_intern(mrb_state *mrb, const char *name, mrb_int len, mrb_bool lit)
+sym_intern(mrb_state *mrb, const char *name, size_t len, mrb_bool lit)
 {
   khash_t(n2s) *h = mrb->name2sym;
   symbol_name sname;
@@ -70,13 +70,13 @@ sym_intern(mrb_state *mrb, const char *name, mrb_int len, mrb_bool lit)
 }
 
 mrb_sym
-mrb_intern(mrb_state *mrb, const char *name, mrb_int len)
+mrb_intern(mrb_state *mrb, const char *name, size_t len)
 {
   return sym_intern(mrb, name, len, FALSE);
 }
 
 mrb_sym
-mrb_intern_static(mrb_state *mrb, const char *name, mrb_int len)
+mrb_intern_static(mrb_state *mrb, const char *name, size_t len)
 {
   return sym_intern(mrb, name, len, TRUE);
 }
@@ -84,7 +84,7 @@ mrb_intern_static(mrb_state *mrb, const char *name, mrb_int len)
 mrb_sym
 mrb_intern_cstr(mrb_state *mrb, const char *name)
 {
-  return mrb_intern(mrb, name, (mrb_int)strlen(name));
+  return mrb_intern(mrb, name, strlen(name));
 }
 
 mrb_sym
@@ -94,7 +94,7 @@ mrb_intern_str(mrb_state *mrb, mrb_value str)
 }
 
 mrb_value
-mrb_check_intern(mrb_state *mrb, const char *name, mrb_int len)
+mrb_check_intern(mrb_state *mrb, const char *name, size_t len)
 {
   khash_t(n2s) *h = mrb->name2sym;
   symbol_name sname = { 0 };