From fece67ee4bcf9536ca88d4d7071ad17490fcc78b Mon Sep 17 00:00:00 2001
From: renzhiyuan1 <renzhiyuan1@xiaomi.com>
Date: Wed, 30 Aug 2023 12:19:50 +0800
Subject: [PATCH] Fix wrong parameter size

Type int expects 4 bytes for function write(). Type char expects 1 byte which matches the real usage of function write().

Signed-off-by: renzhiyuan1 <renzhiyuan1@xiaomi.com>
---
 system/cu/cu_main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/system/cu/cu_main.c b/system/cu/cu_main.c
index bb6b6d7a1..6252667ca 100644
--- a/system/cu/cu_main.c
+++ b/system/cu/cu_main.c
@@ -446,13 +446,16 @@ int main(int argc, FAR char *argv[])
 
   while (!cu->force_exit)
     {
-      int ch = getc(stdin);
+      char ch;
+      int c = getc(stdin);
 
-      if (ch < 0)
+      if (c < 0)
         {
           continue;
         }
 
+      ch = c;
+
       if (nobreak == 1)
         {
           write(cu->outfd, &ch, 1);