From c00a29296c8d3446c7cfe253080c7e33358219b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcelina=20Ko=C5=9Bcielnicka?= <mwk@0x04.net>
Date: Mon, 1 Mar 2021 20:01:39 +0100
Subject: sim: Avoid a crash on empty cell connection.
Fixes #2513.
---
passes/sat/sim.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/passes/sat/sim.cc b/passes/sat/sim.cc
index 3ba66bd33..922be886c 100644
--- a/passes/sat/sim.cc
+++ b/passes/sat/sim.cc
@@ -271,7 +271,7 @@ struct SimInstance
{
auto child = children.at(cell);
for (auto &conn: cell->connections())
- if (cell->input(conn.first)) {
+ if (cell->input(conn.first) && GetSize(conn.second)) {
Const value = get_state(conn.second);
child->set_state(child->module->wire(conn.first), value);
}
--
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