[Issue 1273] New: final-const-invariant.html html errors

[Extrawurst]

http://d.puremagic.com/issues/show_bug.cgi?id=1273

the doc quotes following code to be valid:

int foo(int f) { return f * 3; }
invariant int z = foo(2) + 1;

<- Error: cannot evaluate foo(2) at compile time
but the compiler does not