[llvm] r322487 - Allow function_ref(nullptr) like std::function, since it's nullable already

[David Blaikie via llvm-commits]

Worth a unit test?

On Mon, Jan 15, 2018 at 6:44 AM Sam McCall via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

> Author: sammccall
> Date: Mon Jan 15 06:43:04 2018
> New Revision: 322487
>
> URL: http://llvm.org/viewvc/llvm-project?rev=322487&view=rev
> Log:
> Allow function_ref(nullptr) like std::function, since it's nullable already
>
> Modified:
>     llvm/trunk/include/llvm/ADT/STLExtras.h
>
> Modified: llvm/trunk/include/llvm/ADT/STLExtras.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/STLExtras.h?rev=322487&r1=322486&r2=322487&view=diff
>
> ==============================================================================
> --- llvm/trunk/include/llvm/ADT/STLExtras.h (original)
> +++ llvm/trunk/include/llvm/ADT/STLExtras.h Mon Jan 15 06:43:04 2018
> @@ -101,6 +101,7 @@ class function_ref<Ret(Params...)> {
>
>  public:
>    function_ref() = default;
> +  function_ref(std::nullptr_t) {}
>
>    template <typename Callable>
>    function_ref(Callable &&callable,
>
>
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