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;
}