https://issues.dlang.org/show_bug.cgi?id=20696

          Issue ID: 20696
           Summary: Should error when retrieving mangling while the type
                    is not yet final
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: bugzilla@digitalmars.com

Consider:

-----
struct S() {
  int test() {
    pragma(msg, test.mangleof);
    return 3;
  }
}

S!() s;
-----

This should give an error, because attributes that affect mangling are not known until the semantic analysis is complete.

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