From: Daniel Trnka <redacted>
Date: Tue, 2 Jan 2024 21:13:54 +0000 (+0100)
Subject: trace: fix crash on empty channel name in popup form
X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=commitdiff_plain;h=67784be7a0b4ab46ed566119d182d92695a40ae3

trace: fix crash on empty channel name in popup form

sr_dev_channel_name_set returns SR_ERR_ARG when a channel name is
empty and pulseview crashes once user deletes all characters from
a channel name in trace popup form.

This patch forbids to set empty channel name and keeps last non-empty
name provided by user.
---

diff --git a/pv/views/trace/trace.cpp b/pv/views/trace/trace.cpp
index 1f77598d..ce935280 100644
--- a/pv/views/trace/trace.cpp
+++ b/pv/views/trace/trace.cpp
@@ -442,7 +442,8 @@ void Trace::on_popup_closed()
 void Trace::on_nameedit_changed(const QString &name)
 {
 	/* This event handler notifies SignalBase that the name changed */
-	base_->set_name(name);
+	if(!name.isEmpty())
+		base_->set_name(name);
 }
 
 void Trace::on_coloredit_changed(const QColor &color)