EnumMembers with deprecated members

[dlangBugzillaToGithub]

d.bugs reported this on 2019-05-11T21:00:29Z

Transfered from https://issues.dlang.org/show_bug.cgi?id=19864

Description

import std.traits;

enum Foo
{
	a,
	deprecated b
}

alias Bar = EnumMembers!Foo;


This code will output 6 deprecation notices:

.../std/traits.d(4120): Deprecation: enum member `a.Foo.b` is deprecated
.../std/traits.d-mixin-4108(4108): Deprecation: enum member `a.Foo.b` is deprecated
.../std/traits.d(4119): Deprecation: enum member `a.Foo.b` is deprecated
.../std/traits.d(4120): Deprecation: enum member `a.Foo.b` is deprecated
.../std/traits.d-mixin-4108(4108): Deprecation: enum member `a.Foo.b` is deprecated
.../std/traits.d(4119): Deprecation: enum member `a.Foo.b` is deprecated

There should be no deprecations for simply listing the members into a tuple as EnumMembers is heavily used in phobos and libraries.

See also: issue 19547 describing how @disable members break writeln