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digitalmars.D.bugs - [Issue 17972] New: __traits(getLinkage) doesn't work for classes


          Issue ID: 17972
           Summary: __traits(getLinkage) doesn't work for classes
           Product: D
           Version: D2
          Hardware: x86
                OS: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody puremagic.com
          Reporter: doob me.com

I'm not sure if this should be considered a bug or an enhancement request. I
think that __traits(getLinkage) should work for classes, structs and
interfaces. This is useful to identify a C++ class/struct or an Objective-C
interface. Technically the class might not have a linkage but since one usually
put the linkage on a class I think it make sense to be able to get the linkage
from a class.

From an implementation point of view, it looks like the original implementation
[1] assumed that all declarations inherit from the Declaration class, but this is not the case for structs, classes and interfaces. [1] https://github.com/dlang/dmd/pull/6822 --
Nov 07 2017