[libc] Fix the fputc issue when use microlib.

2018-09-23 14:43:21 +08:00 · 2018-09-23 14:43:21 +08:00 · b49859582a
parent 4ffc675fcb
commit b49859582a
1 changed files with 4 additions and 3 deletions
--- a/components/libc/compilers/armlibc/stubs.c
+++ b/components/libc/compilers/armlibc/stubs.c
@ -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