diff --git a/ChangeLog b/ChangeLog
index 92b11a5d2a..15d69df12a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Nov 19 02:44:07 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* compile.c (iseq_compile_each): alias and undef accept dsyms as well
+	  as literals.  [ruby-dev:32308]
+
 Mon Nov 19 02:31:36 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* eval_method.ci (rb_add_method): no redefinition warning for undef.
diff --git a/compile.c b/compile.c
index 141e55e156..91c94276c7 100644
--- a/compile.c
+++ b/compile.c
@@ -4067,10 +4067,11 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
       }
       case NODE_ALIAS:{
 	VALUE s1, s2;
+	enum node_type t;
 
-	if (nd_type(node->u1.node) != NODE_LIT ||
-	    nd_type(node->u2.node) != NODE_LIT) {
-	    rb_bug("alias args must be NODE_LIT");
+	if (((t = nd_type(node->u1.node)) != NODE_LIT && t != NODE_DSYM) ||
+	    ((t = nd_type(node->u2.node)) != NODE_LIT && t != NODE_DSYM)) {
+	    rb_compile_bug(ERROR_ARGS "alias args must be NODE_LIT or NODE_DSYM");
 	}
 	s1 = node->u1.node->nd_lit;
 	s2 = node->u2.node->nd_lit;
@@ -4091,8 +4092,9 @@ iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *ret, NODE * node, int poped)
 	break;
       }
       case NODE_UNDEF:{
-	if (nd_type(node->u2.node) != NODE_LIT) {
-	    rb_bug("undef args must be NODE_LIT");
+	enum node_type t = nd_type(node->u2.node);
+	if (t != NODE_LIT && t != NODE_DSYM) {
+	    rb_compile_bug(ERROR_ARGS "undef args must be NODE_LIT");
 	}
 	ADD_INSN1(ret, nd_line(node), undef,
 		  ID2SYM(rb_to_id(node->u2.node->nd_lit)));