Lambda does not see const integer initialized by constexpr from the enclosed scope

[Fedr]

This program

int main() {
    const int i = 0;
    []{
        (void)i;
    }();
}

is accepted by GCC and MSVC, but Clang rejects it with the error:

error: variable 'i' cannot be implicitly captured in a lambda with no capture-default specified

Online demo: https://gcc.godbolt.org/z/jdPjn4Y1d

[llvmbot]

@llvm/issue-subscribers-clang-frontend

[shafik]

Duplicate: #34603