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From: "ville.voutilainen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67844] [6 Regression] Cannot make tuple of class with template constructor
Date: Mon, 05 Oct 2015 01:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67844

Ville Voutilainen <ville.voutilainen at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |ville.voutilainen at gmail dot com
           Assignee|unassigned at gcc dot gnu.org      |ville.voutilainen at gmail dot com

--- Comment #2 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
To the extent anything in this area is obvious, yes. :) The check for
non-nested tuple ends up in infinite meta-recursion because A is constructible
from the tuple itself. I think that can be tackled by adding an is_same
check to _TNTC so that the converting templates that take a tuple 
outright reject tuples that are the same as the tuple itself. Fixing...