diff --git a/_demo/empty/C/c.go b/_demo/empty/C/c.go
new file mode 100644
index 00000000..a138cfc2
--- /dev/null
+++ b/_demo/empty/C/c.go
@@ -0,0 +1,9 @@
+package C
+
+func XhandleHardFault() {
+
+}
+
+func Reset_Handler() {
+
+}
diff --git a/_demo/empty/empty.go b/_demo/empty/empty.go
index da29a2ca..b2e977f5 100644
--- a/_demo/empty/empty.go
+++ b/_demo/empty/empty.go
@@ -1,4 +1,6 @@
 package main
 
+import _ "github.com/goplus/llgo/_demo/empty/C"
+
 func main() {
 }