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From: "jlame646 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/108234] New: GCC accepts invalid program involving nontype
 template parameter of auto with non constexpr variable
Date: Tue, 27 Dec 2022 13:54:36 +0000
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X-Bugzilla-Component: c++
X-Bugzilla-Version: 13.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108234

            Bug ID: 108234
           Summary: GCC accepts invalid program involving nontype template
                    parameter of auto with non constexpr variable
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jlame646 at gmail dot com
  Target Milestone: ---

GCC trunk accepts the following invalid program:
https://godbolt.org/z/h5q7589Tr

```
template <int&> struct X{};

template <auto V> int func(X<V>) { return 1; }

int i;
int main() { return func(X<i>{}); }

```

Clang rejects the above program while gcc and msvc accepts it.=