diff options
Diffstat (limited to 'vm_method.c')
| -rw-r--r-- | vm_method.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/vm_method.c b/vm_method.c index d1c68b58f3..215db50080 100644 --- a/vm_method.c +++ b/vm_method.c @@ -574,6 +574,9 @@ rb_undef(VALUE klass, ID id) { rb_method_entry_t *me; + if (NIL_P(klass)) { + rb_raise(rb_eTypeError, "no class to undef method"); + } if (rb_vm_cbase() == rb_cObject && klass == rb_cObject) { rb_secure(4); } |