From 1c9cdbba19d0f7197a7bd555b9580e8efd12aed3 Mon Sep 17 00:00:00 2001
From: "andrey.bychkov" <andrey@signalmodelling.ru>
Date: Mon, 10 Aug 2026 15:48:12 +0300
Subject: [PATCH] fix(picloudserver): use piMin<ssize_t> to avoid
 signed/unsigned UB in Client::readDevice

piMini(max_size, buff.size()) implicitly narrows size_t to int,
which is UB for large buffers. Replace with explicit piMin<ssize_t>
matching the correct pattern used in picloudclient.cpp.
---
 libs/cloud/picloudserver.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/cloud/picloudserver.cpp b/libs/cloud/picloudserver.cpp
index 709f94ef..a6b3c94d 100644
--- a/libs/cloud/picloudserver.cpp
+++ b/libs/cloud/picloudserver.cpp
@@ -201,7 +201,7 @@ ssize_t PICloudServer::Client::readDevice(void * read_to, ssize_t max_size) {
 		if (buff.isEmpty()) {
 			sz = 0;
 		} else {
-			sz = piMini(max_size, buff.size());
+			sz = piMin<ssize_t>(max_size, buff.size_s());
 			memcpy(read_to, buff.data(), sz);
 			buff.remove(0, sz);
 		}