From 4615ce9099b10a4325936cd57f1ca253fc5fcc2d Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Thu, 11 Jun 2020 15:27:04 +0200
Subject: [PATCH] examples/screencopy-dmabuf: call strncpy with maxlen - 1

The original code wasn't wrong since we were manually writing a null
byte anyway, but this makes GCC happy.

Closes: https://github.com/swaywm/wlroots/issues/2273
---
 examples/screencopy-dmabuf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/screencopy-dmabuf.c b/examples/screencopy-dmabuf.c
index ea6b9f50a..ebc6ea759 100644
--- a/examples/screencopy-dmabuf.c
+++ b/examples/screencopy-dmabuf.c
@@ -87,7 +87,7 @@ static bool find_render_node(char *node, size_t maxlen) {
 			continue;
 		}
 
-		strncpy(node, dev->nodes[DRM_NODE_RENDER], maxlen);
+		strncpy(node, dev->nodes[DRM_NODE_RENDER], maxlen - 1);
 		node[maxlen - 1] = '\0';
 		r = true;
 		break;