From d770eb672fcaf303d391d4fb22e57b13dd130ca5 Mon Sep 17 00:00:00 2001
From: David Shah <davey1576@gmail.com>
Date: Mon, 1 Oct 2018 15:23:12 +0100
Subject: ecp5: Helper functions for distributed RAM support

Signed-off-by: David Shah <davey1576@gmail.com>
---
 common/design_utils.cc | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'common')

diff --git a/common/design_utils.cc b/common/design_utils.cc
index 7ad7f749..e3051d20 100644
--- a/common/design_utils.cc
+++ b/common/design_utils.cc
@@ -76,6 +76,8 @@ void print_utilisation(const Context *ctx)
 // Connect a net to a port
 void connect_port(const Context *ctx, NetInfo *net, CellInfo *cell, IdString port_name)
 {
+    if (net == nullptr)
+        return;
     PortInfo &port = cell->ports.at(port_name);
     NPNR_ASSERT(port.net == nullptr);
     port.net = net;
-- 
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