1 files changed, 4 insertions, 0 deletions
diff --git a/rational.c b/rational.c
index 13c44f7925..e779505fd0 100644
--- a/rational.c
+++ b/rational.c
@@ -1042,6 +1042,10 @@ nurat_expt(VALUE self, VALUE other)
 		num = ONE;
 		den = ONE;
 	    }
+	    if (RB_FLOAT_TYPE_P(num)) { /* infinity due to overflow */
+		if (RB_FLOAT_TYPE_P(den)) return DBL2NUM(NAN);
+		return num;
+	    }
 	    return f_rational_new2(CLASS_OF(self), num, den);
 	}
     }