raw_pointer_deriving lint name should be raw_pointer_derive

[huonw]

Due to the #[deriving] -> #[derive] switch.

Relevant bits of code:

• rust/src/librustc/lint/builtin.rs

  Lines 552 to 620 in 496dc4e

  	declare_lint! {
  	RAW_POINTER_DERIVING,
  	Warn,
  	"uses of #[derive] with raw pointers are rarely correct"
  	}
  	struct RawPtrDerivingVisitor<'a, 'tcx: 'a> {
  	cx: &'a Context<'a, 'tcx>
  	}
  	impl<'a, 'tcx, 'v> Visitor<'v> for RawPtrDerivingVisitor<'a, 'tcx> {
  	fn visit_ty(&mut self, ty: &ast::Ty) {
  	static MSG: &'static str = "use of `#[derive]` with a raw pointer";
  	if let ast::TyPtr(..) = ty.node {
  	self.cx.span_lint(RAW_POINTER_DERIVING, ty.span, MSG);
  	}
  	visit::walk_ty(self, ty);
  	}
  	// explicit override to a no-op to reduce code bloat
  	fn visit_expr(&mut self, _: &ast::Expr) {}
  	fn visit_block(&mut self, _: &ast::Block) {}
  	}
  	pub struct RawPointerDeriving {
  	checked_raw_pointers: NodeSet,
  	}
  	impl RawPointerDeriving {
  	pub fn new() -> RawPointerDeriving {
  	RawPointerDeriving {
  	checked_raw_pointers: NodeSet::new(),
  	}
  	}
  	}
  	impl LintPass for RawPointerDeriving {
  	fn get_lints(&self) -> LintArray {
  	lint_array!(RAW_POINTER_DERIVING)
  	}
  	fn check_item(&mut self, cx: &Context, item: &ast::Item) {
  	if !attr::contains_name(item.attrs[], "automatically_derived") {
  	return
  	}
  	let did = match item.node {
  	ast::ItemImpl(..) => {
  	match ty::node_id_to_type(cx.tcx, item.id).sty {
  	ty::ty_enum(did, _) => did,
  	ty::ty_struct(did, _) => did,
  	_ => return,
  	}
  	}
  	_ => return,
  	};
  	if !ast_util::is_local(did) { return }
  	let item = match cx.tcx.map.find(did.node) {
  	Some(ast_map::NodeItem(item)) => item,
  	_ => return,
  	};
  	if !self.checked_raw_pointers.insert(item.id) { return }
  	match item.node {
  	ast::ItemStruct(..) | ast::ItemEnum(..) => {
  	let mut visitor = RawPtrDerivingVisitor { cx: cx };
  	visit::walk_item(&mut visitor, &*item);
  	}
  	_ => {}
  	}
  	}
  	}

  for the actual code

• rust/src/librustc/lint/context.rs

  Line 226 in 496dc4e

  // Insert temporary renamings for a one-time deprecation (#16545)

  should have this renaming added

[csouth3]

Looks easy enough. I could take care of this if you would like/are not doing it already.

Edit: I've prepared a patch, make checking now