Re: FunctionTypeOf behaves unexpectedly for function pointers?

[Basile B. via Digitalmars-d-learn]

On Friday, 29 July 2016 at 13:54:13 UTC, pineapple wrote:
This failure seems curious and I haven't been able to 
understand why it occurs, or whether it might be intentional. 
For all other callable types, including functions and delegates 
and types implementing opCall, the assertion passes.

    import std.traits : FunctionTypeOf;
    void function() func;
    // Error: static assert  (is(void() == void function())) is 
false
    static assert(is(FunctionTypeOf!func == typeof(func)));

func is a pointer to a function but FunctionTypeOf extracts the 
target type.
So the correct assertion is

    static assert(is(FunctionTypeOf!func* == typeof(func)));

I can't believe that it worked for delegates because the same 
happens. It extracts the target type, i.e it discards the 
information saying that it's a member function:

    import std.traits;
    void function() fun;
    void delegate() dlg;
    static assert(is(FunctionTypeOf!fun* == typeof(fun)));
    static assert(is(FunctionTypeOf!dlg* == typeof(fun)));