[Issue 1723] New: __traits(getVirtualFunctions) on a non-function fails badly

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1723

           Summary: __traits(getVirtualFunctions) on a non-function fails
                    badly
           Product: D
           Version: 2.008
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Keywords: diagnostic, rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: dhasenan at gmail.com


---
class Foo {
    int i;
    void f() {}
}

void main () {
    // Succeeds:
    foreach (m; __traits(getVirtualFunctions, Foo, "f")) {}
    // Fails:
    foreach (m; __traits(getVirtualFunctions, Foo, "i")) {}
}
---

The error message is:
virtualfunctions_notfunction.d(9): Error: 'this' is only allowed in non-static
member functions, not main
virtualfunctions_notfunction.d(9): Error: this for i needs to be type Foo not
type int

I also get this when trying to access the .length property of the resulting
tuple.

If there are no virtual methods with the given name, an empty tuple should be
returned. At the very least, it should have a decent error message.


--