From f1bf2fb68416b9da50eedd1e6fe97627c21f704f Mon Sep 17 00:00:00 2001
From: Xavier Del Campo Romero <xavi.dcr@tutanota.com>
Date: Sun, 28 May 2023 12:57:21 +0200
Subject: [PATCH] auth.c: Fix wrong size check

Otherwise, sb.st_size + 1 would exceed SIZE_MAX.
---
 auth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/auth.c b/auth.c
index e6f86fe..09a5faa 100644
--- a/auth.c
+++ b/auth.c
@@ -34,7 +34,7 @@ static char *dump_db(const char *const path)
         fprintf(stderr, "%s: stat(2): %s\n", __func__, strerror(errno));
         goto end;
     }
-    else if (sb.st_size > SIZE_MAX)
+    else if (sb.st_size > SIZE_MAX - 1)
     {
         fprintf(stderr, "%s: %s too big (%llu bytes, %zu max)\n",
             __func__, path, (unsigned long long)sb.st_size, (size_t)SIZE_MAX);