From: Marcelina Kościelnicka <mwk@0x04.net>
Date: Mon, 14 Dec 2020 17:14:42 +0000 (+0100)
Subject: timinginfo: Error instead of segfault on const signals.
X-Git-Tag: working-ls180~165
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=de991977385330dfd628f15440e90a607842fbc4;p=yosys.git

timinginfo: Error instead of segfault on const signals.

Reported by @Ravenslofty
---

diff --git a/kernel/timinginfo.h b/kernel/timinginfo.h
index d818e580b..eba3386d6 100644
--- a/kernel/timinginfo.h
+++ b/kernel/timinginfo.h
@@ -88,10 +88,10 @@ struct TimingInfo
 				auto src = cell->getPort(ID::SRC);
 				auto dst = cell->getPort(ID::DST);
 				for (const auto &c : src.chunks())
-					if (!c.wire->port_input)
+					if (!c.wire || !c.wire->port_input)
 						log_error("Module '%s' contains specify cell '%s' where SRC '%s' is not a module input.\n", log_id(module), log_id(cell), log_signal(src));
 				for (const auto &c : dst.chunks())
-					if (!c.wire->port_output)
+					if (!c.wire || !c.wire->port_output)
 						log_error("Module '%s' contains specify cell '%s' where DST '%s' is not a module output.\n", log_id(module), log_id(cell), log_signal(dst));
 				int rise_max = cell->getParam(ID::T_RISE_MAX).as_int();
 				int fall_max = cell->getParam(ID::T_FALL_MAX).as_int();