From 581806d28e4da91e84f73e73af44d7bd708552a1 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Mon, 11 May 2026 12:08:05 +1000
Subject: [PATCH] tools: verify the libxkbcommon utf8 symbols

This is mostly to shut up analyzers that aren't happy with the strcat
usage here.

Assisted-by: Claude:claude-opus-4-6
Part-of: <https://gitlab.freedesktop.org/libinput/libei/-/merge_requests/388>
---
 tools/ei-demo-client.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/ei-demo-client.c b/tools/ei-demo-client.c
index 16ce9a0..415ecc4 100644
--- a/tools/ei-demo-client.c
+++ b/tools/ei-demo-client.c
@@ -131,7 +131,8 @@ setup_xkb_keymap(struct ei_keymap *keymap)
 	for (unsigned int evcode = KEY_Q; evcode <= KEY_Y; evcode++) {
 		char utf8[7];
 		xkb_keysym_t keysym = xkb_state_key_get_one_sym(xkbstate, evcode + 8);
-		xkb_keysym_to_utf8(keysym, utf8, sizeof(utf8));
+		int len = xkb_keysym_to_utf8(keysym, utf8, sizeof(utf8));
+		assert(len > 0 && (size_t)len <= sizeof(utf8));
 		strcat(layout, utf8);
 	}