On 04/04/2018 01:58 PM, Jason Merrill wrote:
On Wed, Apr 4, 2018 at 3:52 PM, Martin Sebor <mse...@gmail.com> wrote:
On 04/04/2018 01:04 PM, Jason Merrill wrote:

For bugs 54372 and 60063, we changed attributes used and unused to be
applied immediately in a template even if what they apply to is
dependent, to avoid bogus warnings from
maybe_warn_unused_local_typedefs.  But that's only an issue for
TYPE_DECL, so we can use the normal logic for other things.

In our discussion of attributes I thought we decided that explicit
specializations would not inherit attributes from the primary.
IIUC, this change does the opposite for class templates declared
unused so we end up with an inconsistency with function templates:

I thought about that as well, tested with the explicit specialization
removed, and found that still failed.  So that's the bug I fixed.

We do still warn on the testcase from the PR; I should add that to the
testcase I checked in.

Ah, good!  Thanks for clarifying!  Let me update the bug then
to reflect that.


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