Auto merge of #4886 - rust-lang:must-use-pub-only, r=phansch

Lint only exported must_use_candidates

As promised on #4779, here's the check for publicly visible items for `must_use_candidate`

changelog: none
This commit is contained in:
bors 2019-12-11 12:01:10 +00:00
commit 221bf650f6

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@ -449,6 +449,7 @@ fn check_must_use_candidate<'a, 'tcx>(
|| mutates_static(cx, body)
|| in_external_macro(cx.sess(), item_span)
|| returns_unit(decl)
|| !cx.access_levels.is_exported(item_id)
|| is_must_use_ty(cx, return_ty(cx, item_id))
{
return;