[llvm-bugs] [Bug 42555] New: Template static constexpr bool class variable inside static_assert always pass

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42555

            Bug ID: 42555
           Summary: Template static constexpr bool class variable inside
                    static_assert always pass
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: brickmen75 at gmail.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
                    neeilans at live.com, richard-llvm at metafoo.co.uk

There is a minimal example of code, that compiles on clang, but should not:
--------------------
template <class...>
struct foo {
    template <class...>
    static constexpr bool boo = false;

    void goo() {
        static_assert(boo<>, "");
    }
};
int main() {
    foo<> f;
    f.goo();
}
----------
Msvc and gcc deny to compile such a code with 'static assertion failed' error,
as it should be.
Also godbolt example: https://godbolt.org/z/IaYnX5

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