clang-cl.exe: False positive C++17 warning in C++14: out-of-line definition of constexpr static data member

[dmitrykobets-msft]

When compiling with C++14, I'm getting a warning that pertains only to C++17.
I tried this out with LLVM 17.0.0-rc4.

Repro

class A
{
    static constexpr const int i{0};
};
constexpr const int A::i;

int main()
{
}

clang-cl.exe <thefile.cpp> /std:c++14 -Weverything

Output
warning: out-of-line definition of constexpr static data member is redundant in C++17 and is deprecated [-Wdeprecated-redundant-constexpr-static-def]

[llvmbot]

@llvm/issue-subscribers-c-14