From 8120fa5e31a6d3e488a640f0704b795b557008f7 Mon Sep 17 00:00:00 2001
From: LiuLingze <luiyanbing@foxmail.com>
Date: Tue, 19 Mar 2024 07:40:11 +0000
Subject: [PATCH] [bsp][cv1800b] fix a implicit-function-declaration warning

Signed-off-by: LiuLingze <luiyanbing@foxmail.com>
---
 libcpu/risc-v/t-head/c906/trap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libcpu/risc-v/t-head/c906/trap.c b/libcpu/risc-v/t-head/c906/trap.c
index ac04fdbfa4..025b2d3092 100644
--- a/libcpu/risc-v/t-head/c906/trap.c
+++ b/libcpu/risc-v/t-head/c906/trap.c
@@ -28,6 +28,7 @@
 
 #ifdef RT_USING_SMART
 #include <lwp_arch.h>
+void rt_hw_backtrace(rt_uint32_t *ffp, rt_ubase_t sepc);
 #else
 #define rt_hw_backtrace(...) (0)
 #endif