From c714b2748be2f07ff37bb11b7421a7806af8f9d2 Mon Sep 17 00:00:00 2001
From: Nico Schottelius <nico@nico-notebook.schottelius.org>
Date: Wed, 10 Jul 2019 08:48:06 +0200
Subject: [PATCH] Try replacing += syntax with explicit

---
 p4src/checksum_diff.p4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/p4src/checksum_diff.p4 b/p4src/checksum_diff.p4
index beb96da..b5f7def 100644
--- a/p4src/checksum_diff.p4
+++ b/p4src/checksum_diff.p4
@@ -623,7 +623,7 @@ Echo or Echo Reply Message
     action v4sum() {
         bit<16> localsum = 0;
 
-        localsum += hdr.ipv4.src[15:0];              // 16 bit
+        localsum = localsum + hdr.ipv4.src[15:0];              // 16 bit
         localsum += hdr.ipv4.src[31:16];             // 16 bit
         localsum += hdr.ipv4.dst[15:0];              // 16 bit
         localsum += hdr.ipv4.dst[31:16];             // 16 bit