Call C function - Access violation

[TheDGuy via Digitalmars-d-learn]

I get an access violation with this code:

extern(C) char* write(char* text);

void main(string[] args){
	char[] text = "Hello World".dup; //.dup converts string to char[]
	text ~= '\0'; //append

	char* result = write(text.ptr); //you need .ptr
	const(char)[] s = cstr2dstr(result);
	writeln(s);
	readln(); //keep the window open
}

auto cstr2dstr(inout(char)* cstr)
{
	return cstr ? cstr[0 .. strlen(cstr)] : "";
}

--

#include std.stdio;

char* write(char* text){
	return text;
}