[libc] Fix the fputc issue when use microlib.
@@ -313,17 +313,18 @@ int system(const char *string)
int fputc(int c, FILE *f)
{
- char ch = c;
+ char ch[2] = {0};
- rt_kprintf(&ch);
+ ch[1] = c;
+ rt_kprintf(&ch[0]);
return 1;
}
int fgetc(FILE *f)
{
+#ifdef RT_USING_POSIX
char ch;
-#ifdef RT_USING_POSIX
if (libc_stdio_read(&ch, 1) == 1)
return ch;
#endif
