OK.

On Mon, Feb 26, 2018 at 11:56 AM, Paolo Carlini
<paolo.carl...@oracle.com> wrote:
> Hi,
>
> this regression is an ICE on valid, and seems rather easy to analyze: both
> apply_late_template_attributes and tsubst_attributes don't appear to cope
> correctly with tsubst_attribute returning NULL_TREE. That, in turn, seems
> normal for an empty pack - as in the testcases - given the structure of the
> last part of the latter, handling PACK_EXPANSION_P (val). I'm finishing
> testing on x86_64-linux (in libstdc++-v3, so far so good).
>
> Thanks, Paolo.
>
> ///////////////////
>

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