From 52822473466cfa5cdd2146d02dae5f924b8552e4 Mon Sep 17 00:00:00 2001
From: jasonpcarroll <23126711+jasonpcarroll@users.noreply.github.com>
Date: Tue, 13 Jan 2026 13:35:01 -0800
Subject: [PATCH] Add assert to check for overflow in xStreamBufferSendFromISR.
 (#1357)

Co-authored-by: czjaso <czjaso@amazon.com>
---
 stream_buffer.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/stream_buffer.c b/stream_buffer.c
index 4f13c679b..287bd0736 100644
--- a/stream_buffer.c
+++ b/stream_buffer.c
@@ -961,6 +961,9 @@ size_t xStreamBufferSendFromISR( StreamBufferHandle_t xStreamBuffer,
     if( ( pxStreamBuffer->ucFlags & sbFLAGS_IS_MESSAGE_BUFFER ) != ( uint8_t ) 0 )
     {
         xRequiredSpace += sbBYTES_TO_STORE_MESSAGE_LENGTH;
+
+        /* Overflow? */
+        configASSERT( xRequiredSpace > xDataLengthBytes );
     }
     else
     {