From e1e1596cbdc44e8c2a41908117185b306df9f4a5 Mon Sep 17 00:00:00 2001
From: "Man, Jianting (Meco)" <920369182@qq.com>
Date: Thu, 30 Jun 2022 21:15:29 -0400
Subject: [PATCH] =?UTF-8?q?[iar]=20=E4=BF=AE=E5=A4=8D=E7=BC=96=E8=AF=91?=
 =?UTF-8?q?=E9=94=99=E8=AF=AF=20(#6126)?=
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---
 components/libc/compilers/common/cctype.c              | 2 ++
 components/libc/compilers/common/cstdio.c              | 2 ++
 components/libc/compilers/common/include/posix/ctype.h | 3 +++
 components/libc/compilers/common/include/posix/stdio.h | 2 ++
 4 files changed, 9 insertions(+)

diff --git a/components/libc/compilers/common/cctype.c b/components/libc/compilers/common/cctype.c
index ddcff1b39d..3bfb9fe843 100644
--- a/components/libc/compilers/common/cctype.c
+++ b/components/libc/compilers/common/cctype.c
@@ -10,12 +10,14 @@
 
 #include "posix/ctype.h"
 
+#if !(defined(__ICCARM__) && (__VER__ > 9000000)) /* IAR9.0 has defined */
 #ifndef isascii /* some toolchain use macro to define it */
 int isascii(int c)
 {
     return c >= 0x00 && c <= 0x7f;
 }
 #endif
+#endif /* !(defined(__ICCARM__) && (__VER__ > 9000000)) */
 
 #ifndef toascii
 int toascii(int c)
diff --git a/components/libc/compilers/common/cstdio.c b/components/libc/compilers/common/cstdio.c
index 3dffe55aa7..fc14c0b9c3 100644
--- a/components/libc/compilers/common/cstdio.c
+++ b/components/libc/compilers/common/cstdio.c
@@ -13,6 +13,7 @@
 #include <limits.h>
 #include <sys/errno.h>
 
+#ifdef DFS_USING_POSIX
 ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream)
 {
     char *cur_pos, *new_lineptr;
@@ -83,3 +84,4 @@ ssize_t getline(char **lineptr, size_t *n, FILE *stream)
 {
     return getdelim(lineptr, n, '\n', stream);
 }
+#endif /* DFS_USING_POSIX */
diff --git a/components/libc/compilers/common/include/posix/ctype.h b/components/libc/compilers/common/include/posix/ctype.h
index 0ac42e3faf..da805af249 100644
--- a/components/libc/compilers/common/include/posix/ctype.h
+++ b/components/libc/compilers/common/include/posix/ctype.h
@@ -17,9 +17,12 @@ extern "C" {
 
 #include <ctype.h>
 
+#if !(defined(__ICCARM__) && (__VER__ > 9000000)) /* IAR9.0 has defined */
 #ifndef isascii /* some toolchain use macro to define it */
 int isascii(int c);
 #endif
+#endif /* !(defined(__ICCARM__) && (__VER__ > 9000000)) */
+
 #ifndef toascii
 int toascii(int c);
 #endif
diff --git a/components/libc/compilers/common/include/posix/stdio.h b/components/libc/compilers/common/include/posix/stdio.h
index 7dea03bb0d..a2cf01f6b6 100644
--- a/components/libc/compilers/common/include/posix/stdio.h
+++ b/components/libc/compilers/common/include/posix/stdio.h
@@ -18,8 +18,10 @@ extern "C" {
 #include <stdio.h>
 #include <sys/types.h>
 
+#ifdef DFS_USING_POSIX
 ssize_t getdelim(char **lineptr, size_t *n, int delim, FILE *stream);
 ssize_t getline(char **lineptr, size_t *n, FILE *stream);
+#endif /* DFS_USING_POSIX */
 
 #ifdef __cplusplus
 }
-- 
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