From dd72141b786573eb6b59a9d42c86888730dc8eb1 Mon Sep 17 00:00:00 2001
From: Song Ruo Jing <songruojing@espressif.com>
Date: Thu, 3 Apr 2025 22:23:18 +0800
Subject: [PATCH] fix(uart): add check for malloc in uart examples

Closes https://github.com/espressif/esp-idf/issues/13405
---
 examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c   | 1 +
 .../peripherals/uart/uart_events/main/uart_events_example_main.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c b/examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c
index bc7f138477..b8b57ec021 100644
--- a/examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c
+++ b/examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c
@@ -94,6 +94,7 @@ static void echo_task(void *arg)
 
     // Allocate buffers for UART
     uint8_t* data = (uint8_t*) malloc(BUF_SIZE);
+    assert(data);
 
     ESP_LOGI(TAG, "UART start receive loop.\r");
     echo_send(uart_num, "Start RS485 UART test.\r\n", 24);
diff --git a/examples/peripherals/uart/uart_events/main/uart_events_example_main.c b/examples/peripherals/uart/uart_events/main/uart_events_example_main.c
index 19f8726a03..eefa9c7021 100644
--- a/examples/peripherals/uart/uart_events/main/uart_events_example_main.c
+++ b/examples/peripherals/uart/uart_events/main/uart_events_example_main.c
@@ -41,6 +41,7 @@ static void uart_event_task(void *pvParameters)
     uart_event_t event;
     size_t buffered_size;
     uint8_t* dtmp = (uint8_t*) malloc(RD_BUF_SIZE);
+    assert(dtmp);
     for (;;) {
         //Waiting for UART event.
         if (xQueueReceive(uart0_queue, (void *)&event, (TickType_t)portMAX_DELAY)) {