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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/104319] better error message for parsing error when >= or
 >> ends a template variable.
Date: Wed, 02 Feb 2022 21:36:57 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104319

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|better error message for    |better error message for
                   |parsing error when >=3D ends  |parsing error when >=3D =
or >>
                   |a template variable.        |ends a template variable.

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to qingzhe huang from comment #2)
> A slightly different case with operator ">=3D" after template-id causing
> identical error message is: https://www.godbolt.org/z/7ajvfM4rb
>=20
> #include <utility>
>=20
> template<typename T>
> constexpr std::size_t zero=3D0;
>=20
> template<typename T>
> constexpr bool Bool=3Dzero<T>>=3D0;

Right in this case >> is the token. these cases just need to be special cas=
ed
really in the parser itself which is what clang does.=