* eval.c (cvar_cbase): class variables cause SEGV in

  instance_eval() for fixnums and symbols. [ruby-dev:24213]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@6855 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/eval.c b/eval.c
index 46c687dc4..ac3ff420b 100644
--- a/eval.c
+++ b/eval.c
@@ -1779,6 +1779,9 @@ cvar_cbase()
 	    rb_warn("class variable access from toplevel singleton method");
 	}
     }
+    if (NIL_P(cref->nd_clss)) {
+	rb_raise(rb_eTypeError, "no class variables available");
+    }
     return cref->nd_clss;
 }