1 files changed, 4 insertions, 2 deletions
diff --git a/bignum.c b/bignum.c
index e090f9b0dc..133227390d 100644
--- a/bignum.c
+++ b/bignum.c
@@ -290,7 +290,8 @@ rb_quad_pack(buf, val)
     if (!RBIGNUM(val)->sign) {
 	len = QUAD_SIZE;
 	while (len--) {
-	    *buf = ~*buf++;
+	    *buf = ‾*buf;
+	    buf++;
 	}
     }
 }
@@ -311,7 +312,8 @@ rb_quad_unpack(buf, sign)
 
 	RBIGNUM(big)->sign = 0;
 	while (len--) {
-	    *tmp = ~*tmp++;
+	    *tmp = ~*tmp;
+	    tmp++;
 	}
     }