Segment Error occured as call a function in go from C++

[quotes (Z)]

with g++ 9.3.0 & go 1.10.4

I want to call a go function to let it print an integer input by C++.

Here is the setup:

In go:

//export OnLogin_1
func OnLogin_1(status C.int) {
	fmt.Println("target1 ok:", status)
}

In the header file:

typedef void (*nfun)(int LoginStatus);
extern nfun OnLogin_1;

This tells that the there is a function called OnLogin_1 and it has one argument as integer

Then in cpp file:

std::cout << "=====Login Succeeded @" << this->target << std::endl;
if(this->target==1)          OnLogin_1(1);

I saw the print out =====Login Succeeded @1
And the next line: Segment Error

What is wrong with my code? Thanks in advance.

[skillian (Sean Killian)]

What’s the command you’re using to build your Go code?

[quotes (Z)]

just simply go build in the code directory, to compile all the scripts inside it rather than a single file.