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Do not warn when deriving Copy for raw pointers

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Fixes #21272 and #21296
This commit is contained in:
Adolfo Ochagavía 2015-01-18 15:44:41 +01:00
parent ca4b9674c2
commit b9a67e3236
1 changed files with 9 additions and 1 deletions
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10
src/librustc/lint/builtin.rs
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@ -592,7 +592,15 @@ impl LintPass for RawPointerDerive {
return
}
let did = match item.node {
ast::ItemImpl(..) => {
ast::ItemImpl(_, _, _, ref t_ref_opt, _, _) => {
// Deriving the Copy trait does not cause a warning
if let &Some(ref trait_ref) = t_ref_opt {
let def_id = ty::trait_ref_to_def_id(cx.tcx, trait_ref);
if Some(def_id) == cx.tcx.lang_items.copy_trait() {
return
}
}
match ty::node_id_to_type(cx.tcx, item.id).sty {
ty::ty_enum(did, _) => did,
ty::ty_struct(did, _) => did,