[Issue 814] lazy argument + variadic arguments = segfault

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=814





--- Comment #3 from Don <clugdbug at yahoo.com.au>  2009-07-02 08:11:13 PDT ---
In fact, by replacing the T arg line below with the commented out-line, it gets
the correct arguments. So in fact, it's just getting the size of the lazy
parameter wrong when it's calculating _argptr.
-------------
alias void* va_list;

template va_arg(T)
{
    T va_arg(inout va_list _argptr)
    {
    T arg = *cast(T*)_argptr; // original from Phobos
//    T arg = *(cast(T*)(cast(int *)_argptr+1));
    _argptr = _argptr + ((T.sizeof + int.sizeof - 1) & ~(int.sizeof - 1));
    return arg;
    }
}


void foo(lazy int expr, ...){
    char[] tmp_msg = va_arg!(char[])(_argptr);
    if (cast(int)(tmp_msg.ptr)=="food_for_thought".length)
         assert(0, "length is in the pointer!");
    assert(tmp_msg=="food_for_thought");

}

int bar() { return 3; }
void main(){
  foo(bar(),"food_for_thought");
}

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------