diff --git a/components/libc/compilers/newlib/minilib.c b/components/libc/compilers/newlib/minilib.c
index 612554ca66..7aed3aa36e 100644
--- a/components/libc/compilers/newlib/minilib.c
+++ b/components/libc/compilers/newlib/minilib.c
@@ -64,3 +64,9 @@ void * _sbrk_r(struct _reent *ptr, ptrdiff_t incr)
     return RT_NULL;
 }
 #endif /*RT_USING_HEAP*/
+
+void __libc_init_array(void)
+{
+    /* we not use __libc init_aray to initialize C++ objects */
+    /* __libc_init_array is ARM code, not Thumb; it will cause hardfault. */
+}
diff --git a/components/libc/compilers/newlib/syscalls.c b/components/libc/compilers/newlib/syscalls.c
index aeb4d123e7..b2258c3345 100644
--- a/components/libc/compilers/newlib/syscalls.c
+++ b/components/libc/compilers/newlib/syscalls.c
@@ -303,6 +303,7 @@ void _system(const char *s)
 void __libc_init_array(void)
 {
     /* we not use __libc init_aray to initialize C++ objects */
+    /* __libc_init_array is ARM code, not Thumb; it will cause hardfault. */
 }
 
 mode_t umask(mode_t mask)