1950 – CTFE doesn't work correctly for structs passed by ref

struct S
{
 int x;
}
int foo()
{
 S s;
 bar(s);
 return s.x;
}
void bar(ref S s)
{
 s.x = 10;
}
enum x = foo();
static assert(x == 10); // Fails, x is 0

This bug also applies to D1.0, replacing the 'enum' with 
const int x = foo();

I have fixed this in my copy of interpret.c, but it's rather more general. It allows arbitrary expressions as reference parameters. (Passing an array member by reference will result in wrong-code in DMD1.046).

I have sent Walter my patch for this, it will be in the next release.

Fixed dmd 1.047 and 2.032