Add assert to check for overflow in xStreamBufferSendFromISR. (#1357)

jasonpcarroll · czjaso · web-flow · commit 52822473466c · 2026-01-13T13:35:01.000-08:00
Co-authored-by: czjaso &lt;czjaso@amazon.com&gt;
diff --git 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
     {

Original file line number	Diff line number	Diff line change
`@@ -961,6 +961,9 @@ size_t xStreamBufferSendFromISR( StreamBufferHandle_t xStreamBuffer,`
`961`	`961`	`if( ( pxStreamBuffer->ucFlags & sbFLAGS_IS_MESSAGE_BUFFER ) != ( uint8_t ) 0 )`
`962`	`962`	`{`
`963`	`963`	`xRequiredSpace += sbBYTES_TO_STORE_MESSAGE_LENGTH;`
	`964`	`+`
	`965`	`+ /* Overflow? */`
	`966`	`+ configASSERT( xRequiredSpace > xDataLengthBytes );`
`964`	`967`	`}`
`965`	`968`	`else`
`966`	`969`	`{`