From: Soeren Apel <redacted>
Date: Sun, 15 Nov 2020 19:58:40 +0000 (+0100)
Subject: Fix #1637 by auto-assigning only to unused signals
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=8ff61402dc4ac33630deeb077e8a744a7daba6a4;p=pulseview.git

Fix #1637 by auto-assigning only to unused signals
---

diff --git a/pv/data/decodesignal.cpp b/pv/data/decodesignal.cpp
index ed29cafe..bda8d51e 100644
--- a/pv/data/decodesignal.cpp
+++ b/pv/data/decodesignal.cpp
@@ -308,7 +308,13 @@ void DecodeSignal::auto_assign_signals(const shared_ptr<Decoder> dec)
 			}
 		}
 
-		if (match) {
+		// Prevent using a signal more than once as D1 would match e.g. D1 and D10
+		bool signal_not_already_used = true;
+		for (decode::DecodeChannel& ch : channels_)
+			if (ch.assigned_signal && (ch.assigned_signal == match))
+				signal_not_already_used = false;
+
+		if (match && signal_not_already_used) {
 			ch.assigned_signal = match;
 			new_assignment = true;
 		}