From 95591a5269b822f25907616393a435901194b75e Mon Sep 17 00:00:00 2001
From: czjaso <czjaso@amazon.com>
Date: Mon, 12 Jan 2026 14:08:57 -0800
Subject: [PATCH] Add assert to check for overflow in xStreamBufferSendFromISR.

---
 stream_buffer.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/stream_buffer.c b/stream_buffer.c
index 4f13c679b90..287bd073699 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
     {