* variable.c (rb_obj_classname): new function.

* string.c (rb_str_dup): should preserve original's class (but not
  hidden singleton class).

* string.c (rb_str_substr): ditto.

* parse.y: backout EXPR_CMDARG removal.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3427 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/bignum.c b/bignum.c
index 2312474c3e..577f072ee3 100644
--- a/bignum.c
+++ b/bignum.c
@@ -1704,7 +1704,7 @@ rb_big_coerce(x, y)
     }
     else {
 	rb_raise(rb_eTypeError, "Can't coerce %s to Bignum",
-		 rb_class2name(CLASS_OF(y)));
+		 rb_obj_classname(y));
     }
     /* not reached */
     return Qnil;