From ce0ac4f29e720688ea94fbe412a0b332304d8ee6 Mon Sep 17 00:00:00 2001
From: Tobias Stoeckmann <tobias@stoeckmann.org>
Date: Thu, 12 Sep 2024 20:52:15 +0200
Subject: [PATCH] cursor: Gracefully handle out of memory condition

If the full path could not be constructed, avoid calling opendir(NULL)
which, depending on library, might trigger undefined behavior.

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
---
 cursor/xcursor.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cursor/xcursor.c b/cursor/xcursor.c
index b852a1f9..f7156cdb 100644
--- a/cursor/xcursor.c
+++ b/cursor/xcursor.c
@@ -686,11 +686,15 @@ load_all_cursors_from_dir(const char *path, int size,
 			  void *user_data)
 {
 	FILE *f;
-	DIR *dir = opendir(path);
+	DIR *dir;
 	struct dirent *ent;
 	char *full;
 	struct xcursor_images *images;
 
+	if (!path)
+		return;
+
+	dir = opendir(path);
 	if (!dir)
 		return;