Types soup with enum and bool

[Maxim Fomin]

On Tuesday, 29 October 2013 at 12:43:17 UTC, bearophile wrote:
> This code is accepted by the D compiler:
>
>
> enum Foo { A, B, C }
> void main() {
>     bool[5] bools;
>     auto b = bools[2] != Foo.C;
>     bools[2] = Foo.A;
> }
>
>
> Who is that likes such kind of code? What are the advantages of 
> accepting such kind of code? I can see the disadvantages and 
> risks.
>
> Bye,
> bearophile

Probably may be related to even worse issue:

import std.stdio;

void foo(bool b) { writeln("bool"); }
void foo(long l) { writeln("long"); }

void main()
{
	foo(0); // bool
	foo(1); // bool
	foo(2); // long
	int i = true;
	foo(i); // long
}

If reasons for accepting yours and this example are the same, 
then this is by design (to be more precise, the part which is 
related to bool types being essentially kind of integer types + 
VRP + overloading rules).