bjoernager/rust
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Auto merge of #91555 - matthiaskrgr:rollup-pq0iaq7, r=matthiaskrgr

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Rollup of 4 pull requests

Successful merges:

 - #90529 (Skip reborrows in AbstractConstBuilder)
 - #91437 (Pretty print empty blocks as {})
 - #91450 (Don't suggest types whose inner type is erroneous)
 - #91535 (Stabilize `-Z emit-future-incompat` as `--json future-incompat`)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
This commit is contained in:
bors 2021-12-05 15:33:44 +00:00
commit 772d51f887
76 changed files with 270 additions and 179 deletions
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4
compiler/rustc_typeck/src/collect.rs
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@ -41,7 +41,7 @@ use rustc_middle::ty::subst::InternalSubsts;
use rustc_middle::ty::util::Discr;
use rustc_middle::ty::util::IntTypeExt;
use rustc_middle::ty::{self, AdtKind, Const, DefIdTree, Ty, TyCtxt};
use rustc_middle::ty::{ReprOptions, ToPredicate, WithConstness};
use rustc_middle::ty::{ReprOptions, ToPredicate, TypeFoldable, WithConstness};
use rustc_session::lint;
use rustc_session::parse::feature_err;
use rustc_span::symbol::{kw, sym, Ident, Symbol};
@ -1777,7 +1777,7 @@ fn fn_sig(tcx: TyCtxt<'_>, def_id: DefId) -> ty::PolyFnSig<'_> {
visitor.visit_ty(ty);
let mut diag = bad_placeholder_type(tcx, visitor.0, "return type");
let ret_ty = fn_sig.skip_binder().output();
if ret_ty != tcx.ty_error() {
if !ret_ty.references_error() {
if !ret_ty.is_closure() {
let ret_ty_str = match ret_ty.kind() {
// Suggest a function pointer return type instead of a unique function definition