ngoto	2016-05-20 22:33:10 +0900 (Fri, 20 May 2016)

  New Revision: 55084

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=55084

  Log:
    Use HAVE_BUILTIN___BUILTIN_CONSTANT_P
    
    * symbol.h (rb_id2sym): Use HAVE_BUILTIN___BUILTIN_CONSTANT_P

  Modified files:
    trunk/ChangeLog
    trunk/symbol.h
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 55083)
+++ ChangeLog	(revision 55084)
@@ -1,3 +1,7 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Fri May 20 22:30:09 2016  Naohisa Goto  <ngotogenome@g...>
+
+	* symbol.h (rb_id2sym): Use HAVE_BUILTIN___BUILTIN_CONSTANT_P
+
 Fri May 20 22:19:00 2016  Kazuhiro NISHIYAMA  <zn@m...>
 
 	* ext/date/date_core.c: [DOC] fix typos.
Index: symbol.h
===================================================================
--- symbol.h	(revision 55083)
+++ symbol.h	(revision 55084)
@@ -17,10 +17,10 @@ https://github.com/ruby/ruby/blob/trunk/symbol.h#L17
 #define DYNAMIC_ID_P(id) (!(id&ID_STATIC_SYM)&&id>tLAST_OP_ID)
 #define STATIC_ID2SYM(id)  (((VALUE)(id)<<RUBY_SPECIAL_SHIFT)|SYMBOL_FLAG)
 
-#ifdef __GNUC__
+#ifdef HAVE_BUILTIN___BUILTIN_CONSTANT_P
 #define rb_id2sym(id) \
-    __extension__(__builtin_constant_p(id) && !DYNAMIC_ID_P(id) ? \
-		  STATIC_ID2SYM(id) : rb_id2sym(id))
+    RB_GNUC_EXTENSION_BLOCK(__builtin_constant_p(id) && !DYNAMIC_ID_P(id) ? \
+			    STATIC_ID2SYM(id) : rb_id2sym(id))
 #endif
 
 struct RSymbol {

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