diff options
Diffstat (limited to 'vm_insnhelper.c')
| -rw-r--r-- | vm_insnhelper.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/vm_insnhelper.c b/vm_insnhelper.c index 0fe9902418..a5967f736c 100644 --- a/vm_insnhelper.c +++ b/vm_insnhelper.c @@ -221,7 +221,7 @@ caller_setup_args(const rb_thread_t *th, rb_control_frame_t *cfp, VALUE flag, if (proc != Qnil) { if (!rb_obj_is_proc(proc)) { VALUE b = rb_check_convert_type(proc, T_DATA, "Proc", "to_proc"); - if (NIL_P(b)) { + if (NIL_P(b) || !rb_obj_is_proc(b)) { rb_raise(rb_eTypeError, "wrong argument type %s (expected Proc)", rb_obj_classname(proc)); |