MSVC gives warning C26478 "using std::move on constant variables"

Question

I have the following code that returns a warning C26478 with MSVC 1937 (with /W4). However both clang and gcc (with -Wpedantic -Wextra -Wall) are fine with this code.

std::tuple<int, int> i_make_tuples(){
    return std::make_tuple(42,23);
}

int main() {
    auto const [x,y] = i_make_tuples(); // C26478 (Don't use std::move on constant variables) reported here
}

Am I wrong or is this warning unjustified in this case?

Answer 1

This is indeed a false positive, which has been acknowledged as a bug by the MSVC developers.