From 527b05b6b8c5fdb57c92d6a0099ccfccbaaceabf Mon Sep 17 00:00:00 2001
From: Philippe Antoine <pantoine@oisf.net>
Date: Thu, 27 Mar 2025 14:55:32 +0100
Subject: [PATCH] datasets: fix new -Wshorten-64-to-32 warning

Ticket: #6186
---
 src/datasets.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/datasets.c b/src/datasets.c
index c0c8a9b3d7..8a734d41fb 100644
--- a/src/datasets.c
+++ b/src/datasets.c
@@ -1370,7 +1370,11 @@ static int DatasetOpSerialized(Dataset *set, const char *string, DatasetOpFunc D
 
     switch (set->type) {
         case DATASET_TYPE_STRING: {
-            uint32_t decoded_size = SCBase64DecodeBufferSize(strlen(string));
+            if (strlen(string) > UINT16_MAX) {
+                // size check before cast and stack allocation
+                return -1;
+            }
+            uint32_t decoded_size = SCBase64DecodeBufferSize((uint32_t)strlen(string));
             uint8_t decoded[decoded_size];
             uint32_t num_decoded = SCBase64Decode(
                     (const uint8_t *)string, strlen(string), SCBase64ModeStrict, decoded);
-- 
2.47.2