Bug 12712 – __traits(parent, X.Y) recurs X for template struct X with repeated applications of __traits(parent, ...)

This issue is really similar to issue 12496 (https://issues.dlang.org/show_bug.cgi?id=12496). There's a reference to another bug, but as I could not find that issue going off of just the name 'Vladimir', and as I have a slightly different form (templates vs. mixins) and don't know the specifics of the compiler's inner workings, I'm filing this as a new bug. -- BEGIN CODE -- module something; struct A(T) { static struct B {} } pragma(msg,__traits(parent,__traits(parent,__traits(parent,A!int.B)))); -- END CODE -- The resulting output is `A!int` as opposed to `something` on the second application of parent, and again `A!int` as opposed to an error (or whatever the compiler should be responding with to a request for a parent from a top-level module) on the following application. Thanks for your time~!

*** This issue has been marked as a duplicate of issue 12287 ***