Invalid assignment Error For string_conversion.st

[PBaswat]

Hi,
i am trying perform some bit shift operations using SHL, while compiling i encountered following errors,

Here is my code,

program myprogram
   var
		num1 : dint ;
   end_var   
   
   var_temp
		result : dword;
   end_var
   
   result := SHL(16#2345, 16);
   result := SHL(4, 16);
   
end_program

#include <iostream>

using namespace std;

extern "C" {
	// Declare a struct for the function block
	typedef struct {
		bool ci;
		int printer;
		char in[50];
	} print_string;
	// Declare a struct for the program
	typedef struct {
		print_string printstr;
	} myprogram_struct; 

	// Declare the instance of the program as external
	extern myprogram_struct myprogram_instance;

	// Declare the external "public" method by using the program call signature
	void myprogram(myprogram_struct*);

}


int main(int argc, char * argv[]){
	myprogram(&myprogram_instance);
	return 0;
}

Below is command used to build program,

plc -c myprogram.st ../../libs/stdlib/iec61131-st/*.st -o st.o --pic
clang++ -c main.cpp -o main.o
clang++ main.o st.o -o Test -liec61131std

How to get rid of this internal error?????

[mhasel]

Hi! These are some false-positive validation errors that we haven't gotten around to fixing yet. They should not stop the compilation, however. For now, you can just ignore them.