* compile.c, insns.def: change return value of "defined?"

  for $&, $1, ... .  If such variables are defined,
  return "global-variable".
* test/ruby/test_defined.rb: add tests.
* bootstraptest/test_syntax.rb: fix a test.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14031 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 8 deletions

diff --git a/insns.def b/insns.def
index 4e7ba8b352..489a90da09 100644
--- a/insns.def
+++ b/insns.def
@@ -795,8 +795,6 @@ defined
 {
     VALUE klass;
     char *expr_type = 0;
-    char buf[0x10];
-    
     val = Qnil;
 
     switch (type) {
@@ -868,12 +866,9 @@ defined
 	  break;
       }
       case DEFINED_REF:{
-	  int nth = FIX2INT(obj);
-	  VALUE backref = lfp_svar_get(th, GET_LFP(), 1);
-	  
-	  if (rb_reg_nth_match(nth, backref) != Qnil) {
-	      snprintf(buf, 0x10, "$%d", nth);
-	      expr_type = buf;
+	  val = vm_getspecial(th, GET_LFP(), Qfalse, FIX2INT(obj));
+	  if (val != Qnil) {
+	      expr_type = "global-variable";
 	  }
 	  break;
       }