Real implicitly converts to float?

[Jonathan M Davis via Digitalmars-d-learn]

On Wednesday, June 22, 2016 05:04:42 Tofu Ninja via Digitalmars-d-learn wrote:
> Is this intended behavior? I can't seem to find it documented
> anywhere, I would think the loss in precision would atleast be a
> warning.
>
> real x = 10;
> float y = x; // No error or warning
>
> real to double and double to float also work.

Well, that particular value should probably work thanks to VRP (value range
propagation), since 10 can fit into float with no loss of precision.
However, what's far more disconcerting is that

real x = real.max;
float y = x;

compiles. real to float is a narrowing conversion, which should be an error
barring the compiler detecting that the value will fit in the target type
even if it's a narrowing conversion (which only happens with VRP). That's
not the sort of thing that I would have expected to be broken such that it
begs the question as to whether it's intentional, but given that narrowing
conversions without a cast are illegal everywhere else, this definitely
seems broken.

- Jonathan M Davis