diff --git a/ChangeLog b/ChangeLog
index 6564e15b25..7e5f150eec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Aug 15 02:08:53 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* gc.c (id2ref): recycle check should be done by klass == 0.
+	  [ruby-core:01408]
+
 Fri Aug 15 00:38:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
 
 	* ext/bigdecimal/bigdecimal.c: Bug in div method fixed.
@@ -6,6 +11,10 @@ Fri Aug 15 00:38:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
 
 	* ext/bigdecimal/sample/pi.rb: Changed so as to use math.rb.
 
+Thu Aug 14 21:19:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* eval.c (Init_Thread): Continuation#[] added.  [ruby-talk:79028]
+
 Thu Aug 14 20:03:34 2003  Masaki Suketa  <masaki.suketa@nifty.ne.jp>
 
 	* ext/win32ole/win32ole.c (OLE_FREE): should not call 
@@ -21,6 +30,18 @@ Thu Aug 14 11:27:37 2003  NAKAMURA Usaku <usa@ruby-lang.org>
 	* gc.c (rb_data_object_alloc): check type of 1st argument.
 	  [ruby-dev:21192]
 
+Thu Aug 14 00:21:14 2003  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* parse.y (mlhs_node): should allow "::Foo" (colon3) as lhs. 
+
+	* parse.y (lhs): ditto.
+
+	* parse.y (yylex): should return tCOLON3 right after kCLASS.
+	  [ruby-talk:78918]
+
+	* error.c (exc_initialize): was converting argument to string too
+	  eagerly.  Only check was needed. [ruby-talk:78958]
+
 Wed Aug 13 23:31:00 2003  Shigeo Kobayashi  <shigek@ruby-lang.org>
 
 	* ext/bigdecimal/bigdecimal.c .h .html: Ambiguity of 
diff --git a/error.c b/error.c
index f8fbdf7ade..674c87d122 100644
--- a/error.c
+++ b/error.c
@@ -318,12 +318,13 @@ exc_initialize(argc, argv, exc)
     VALUE *argv;
     VALUE exc;
 {
-    VALUE mesg;
+    VALUE arg;
 
-    if (rb_scan_args(argc, argv, "01", &mesg) == 1) {
+    if (rb_scan_args(argc, argv, "01", &arg) == 1) {
+	VALUE mesg = arg;
 	StringValue(mesg);	/* ensure mesg can be converted to String */
     }
-    rb_iv_set(exc, "mesg", mesg);
+    rb_iv_set(exc, "mesg", arg);
     rb_iv_set(exc, "bt", Qnil);
 
     return exc;
diff --git a/eval.c b/eval.c
index a03c676068..986eb197ac 100644
--- a/eval.c
+++ b/eval.c
@@ -10114,6 +10114,7 @@ Init_Thread()
     rb_undef_alloc_func(rb_cCont);
     rb_undef_method(CLASS_OF(rb_cCont), "new");
     rb_define_method(rb_cCont, "call", rb_cont_call, -1);
+    rb_define_method(rb_cCont, "[]", rb_cont_call, -1);
     rb_define_global_function("callcc", rb_callcc, 0);
 
     cThGroup = rb_define_class("ThreadGroup", rb_cObject);
diff --git a/gc.c b/gc.c
index a76d5c81bc..1024c1a50e 100644
--- a/gc.c
+++ b/gc.c
@@ -1639,7 +1639,7 @@ id2ref(obj, id)
     if (!is_pointer_to_heap((void *)ptr)) {
 	rb_raise(rb_eRangeError, "0x%lx is not id value", p0);
     }
-    if (BUILTIN_TYPE(ptr) == 0) {
+    if (RBASIC(ptr)->klass == 0) {
 	rb_raise(rb_eRangeError, "0x%lx is recycled object", p0);
     }
     return (VALUE)ptr;
diff --git a/lib/xmlrpc/utils.rb b/lib/xmlrpc/utils.rb
index 675f23275b..14dd08b21d 100644
--- a/lib/xmlrpc/utils.rb
+++ b/lib/xmlrpc/utils.rb
@@ -113,7 +113,7 @@ module XMLRPC
     def initialize(prefix, &p)
       raise "No interface specified" if p.nil?
       super(prefix)
-      instance_eval &p
+      instance_eval(&p)
     end
 
     def get_methods(obj, delim=".") 
diff --git a/parse.y b/parse.y
index c037fcb772..32f843cee9 100644
--- a/parse.y
+++ b/parse.y
@@ -809,6 +809,12 @@ mlhs_node	: variable
 			    yyerror("dynamic constant assignment");
 			$$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
 		    }
+		| tCOLON3 tCONSTANT
+		    {
+			if (in_def || in_single)
+			    yyerror("dynamic constant assignment");
+			$$ = NEW_CDECL(0, 0, NEW_COLON3($2));
+		    }
 		| backref
 		    {
 		        rb_backref_error($1);
@@ -842,6 +848,12 @@ lhs		: variable
 			    yyerror("dynamic constant assignment");
 			$$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
 		    }
+		| tCOLON3 tCONSTANT
+		    {
+			if (in_def || in_single)
+			    yyerror("dynamic constant assignment");
+			$$ = NEW_CDECL(0, 0, NEW_COLON3($2));
+		    }
 		| backref
 		    {
 		        rb_backref_error($1);
@@ -1026,6 +1038,10 @@ arg		: lhs '=' arg
 		    {
 			yyerror("constant re-assignment");
 		    }
+		| tCOLON3 tCONSTANT tOP_ASGN arg
+		    {
+			yyerror("constant re-assignment");
+		    }
 		| backref tOP_ASGN arg
 		    {
 		        rb_backref_error($1);
@@ -1431,7 +1447,7 @@ primary		: literal
 		    {
 			$$ = NEW_COLON2($1, $3);
 		    }
-		| tCOLON3 cname
+		| tCOLON3 tCONSTANT
 		    {
 			$$ = NEW_COLON3($2);
 		    }
@@ -3928,7 +3944,7 @@ yylex()
 	c = nextc();
 	if (c == ':') {
 	    if (lex_state == EXPR_BEG ||  lex_state == EXPR_MID ||
-		(IS_ARG() && space_seen)) {
+		lex_state == EXPR_CLASS || (IS_ARG() && space_seen)) {
 		lex_state = EXPR_BEG;
 		return tCOLON3;
 	    }