From 4bdd979df6af790b1b1a3f2bfdfb1b266efbe8ac Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 18 Mar 2025 19:55:30 +0100
Subject: [PATCH] Fix index out of bounds when creating group (peek color)

---
 gtk2_ardour/utils.cc | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/gtk2_ardour/utils.cc b/gtk2_ardour/utils.cc
index 747c9f134b..6bc56f0887 100644
--- a/gtk2_ardour/utils.cc
+++ b/gtk2_ardour/utils.cc
@@ -719,14 +719,16 @@ ARDOUR_UI_UTILS::round_robin_palette_color (bool just_peek)
 	std::vector<Gdk::Color>                   c (gc);
 	static std::vector<Gdk::Color>::size_type index = 0;
 
-	if(just_peek) {
-		return c[index];
-	}
+	assert (c.size() > 0);
 
 	if (index >= c.size ()) {
 		index = 0;
 	}
 
+	if(just_peek) {
+		return c[index];
+	}
+
 	return c[index++];
 }