From 9d91c7a69c740023fb96358f7aee56be9806e23f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ioan=20Biz=C4=83u?= <i@ibz.me>
Date: Fri, 11 Apr 2025 09:41:17 +0200
Subject: [PATCH] chore(eckhart): check button subtitle overflow

[no changelog]
---
 core/embed/rust/src/ui/layout_eckhart/component/button.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/embed/rust/src/ui/layout_eckhart/component/button.rs b/core/embed/rust/src/ui/layout_eckhart/component/button.rs
index 051e7d9b7b..18232edf30 100644
--- a/core/embed/rust/src/ui/layout_eckhart/component/button.rs
+++ b/core/embed/rust/src/ui/layout_eckhart/component/button.rs
@@ -463,6 +463,10 @@ impl Button {
                 });
 
                 subtext.map(|subtext| {
+                    #[cfg(feature = "ui_debug")]
+                    if subtext_style.text_font.text_width(subtext) > self.area.width() {
+                        fatal_error!(&uformat!(len: 128, "Subtext too long: '{}'", subtext));
+                    }
                     shape::Text::new(
                         render_origin(if single_line_text {
                             text_baseline_height / 2