[Issue 19270] New: is expression fails with function types

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19270

          Issue ID: 19270
           Summary: is expression fails with function types
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: atila.neves at gmail.com

The second static assert below fails and shouldn't since it's basically the
same thing as the first one:

-------
int foo(short, double) { return 42; }
static assert(is(typeof(foo) == typeof(*(int function(short, double)).init)));
static assert(is(typeof(foo) == typeof(*(int function(A0,   double)).init)),
A0);
-------

Note that this works as expected:

-------
static assert(is(typeof(&foo) == int function(A0, double), A0));
-------

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