From 0f85eefb8b3601d2b5d23b36c09a0184f6b18d94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Wed, 16 Feb 2022 18:50:17 +0400
Subject: [PATCH] gio: fix OOB string access if filename is empty
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 gio/gcontenttype.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gio/gcontenttype.c b/gio/gcontenttype.c
index 3e5b841ab..3c9522bc6 100644
--- a/gio/gcontenttype.c
+++ b/gio/gcontenttype.c
@@ -780,7 +780,7 @@ g_content_type_guess (const gchar  *filename,
   if (filename)
     {
       i = strlen (filename);
-      if (filename[i - 1] == '/')
+      if (i > 0 && filename[i - 1] == '/')
         {
           name_mimetypes[0] = "inode/directory";
           name_mimetypes[1] = NULL;