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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/55722] failed static_assert won't trigger a second time
Date: Tue, 31 Aug 2021 18:44:01 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D55722

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jason at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
The static_assert only fires once because we only instantiate a particular
class or function once.  When we instantiate
__assert_callable<std::false_type>, we trip the static_assert, but later us=
es
get the result of the earlier instantiation.  I don't think factoring out
static_assert into a separate template is going to do what you want.=