1 files changed, 2 insertions, 0 deletions
diff --git a/rational.c b/rational.c
index 3af98c76c5..8d0e8306f5 100644
--- a/rational.c
+++ b/rational.c
@@ -1606,6 +1606,8 @@ nurat_marshal_load(VALUE self, VALUE a)
 {
     get_dat1(self);
     Check_Type(a, T_ARRAY);
+    if (RARRAY_LEN(a) != 2)
+	rb_raise(rb_eArgError, "marshaled rational must have an array whose length is 2 but %ld", RARRAY_LEN(a));
     dat->num = RARRAY_PTR(a)[0];
     dat->den = RARRAY_PTR(a)[1];
     rb_copy_generic_ivar(self, a);