intern.h: deprecate rb_clear_cache

* include/ruby/intern.h (rb_clear_cache): mark as deprecated, not
  only warnings at runtime.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48281 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Nov  5 16:26:58 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* include/ruby/intern.h (rb_clear_cache): mark as deprecated, not
+	  only warnings at runtime.
+
 Wed Nov  5 15:05:12 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* string.c (rb_str_{,l,r}strip_bang): rb_str_subseq() will not

include/ruby/intern.h

@@ -378,7 +378,7 @@ typedef VALUE (*rb_alloc_func_t)(VALUE);
 void rb_define_alloc_func(VALUE, rb_alloc_func_t);
 void rb_undef_alloc_func(VALUE);
 rb_alloc_func_t rb_get_alloc_func(VALUE);
-void rb_clear_cache(void);
+DEPRECATED(void rb_clear_cache(void));
 void rb_clear_constant_cache(void);
 void rb_clear_method_cache_by_class(VALUE);
 void rb_alias(VALUE, ID, ID);