Floating Point Literals: float (f) and real (L) suffix issue

[kdevel via Digitalmars-d-learn]

suffix.d
```
void main ()
{
   real r = 1.L;
   float f = 1.f;
}
```
$ dmd suffix.d
suffix.d(3): Error: no property 'L' for type 'int'
suffix.d(4): Error: no property 'f' for type 'int'

According to the grammar in dmd2/html/d/spec/lex.html both are 
valid FloatLiterals. Any comments?