clang: misleading error message when redefining the body of a constructor ctor() = default;

[AbdullahAmrSobh]

Attempting to redefine the CTOR of a class-type which was declared = default, produces the misleading error message error: 'Foo' is missing exception specification 'noexcept'

https://godbolt.org/z/7Tf85cYKG

#include <memory>
struct Foo
{
    Foo() = default;
    float pi;
};
Foo::Foo()
    : pi(3.14)
{
}