2 files changed, 6 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 3733c10b7..5f9a5e1d4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Oct  1 15:57:49 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* gc.c (id2ref): skip ICLASS.
+
 Mon Oct  1 15:29:35 2007  Tanaka Akira  <akr@fsij.org>
 
 	* bootstraptest/runner.rb (assert_normal_exit): use `` instead of
diff --git a/gc.c b/gc.c
index 4b239b634..9bbca2258 100644
--- a/gc.c
+++ b/gc.c
@@ -2069,7 +2069,8 @@ id2ref(VALUE obj, VALUE objid)
 	return ID2SYM(symid);
     }
 
-    if (!is_pointer_to_heap((void *)ptr) || BUILTIN_TYPE(ptr) >= T_VALUES) {
+    if (!is_pointer_to_heap((void *)ptr) ||
+	BUILTIN_TYPE(ptr) >= T_VALUES || BUILTIN_TYPE(ptr) == T_ICLASS) {
 	rb_raise(rb_eRangeError, "%p is not id value", p0);
     }
     if (BUILTIN_TYPE(ptr) == 0 || RBASIC(ptr)->klass == 0) {