https://issues.dlang.org/show_bug.cgi?id=20499

          Issue ID: 20499
           Summary: bad error message caused by UFCS attempt on the
                    identifier matching to an import
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: diagnostic
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: b2.temp@gmx.com

a.d
---
module a;

class Foo
{
    private int x;
}
---

---
module b;

import a;

void test(Foo foo)
{
    foo.a++;
}
---

then in the same directory as the two files

$ dmd b.d

output:

> Error: function expected before `()`, not `module a` of type `void`

The real problem here is that `Foo` does not contain any member named a.
The bad message leads to think that the compiler tries a function `foo` on the
import `a`, i.e by UFCS but the only existing `foo` is a class.


Also if you look at the command line you can note that "a.d" is not specified. I don't know why dmd automatically detects the file. If this is part of this strange issue then what is expected is

> module `a` is in file 'a.d' which cannot be read

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