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Rollup merge of #71938 - mark-i-m:de-abuse-err-4, r=eddyb

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Use trait_object_dummy_self instead of err

r? @eddyb

cc #70866.
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Dylan DPC 2020-05-07 17:58:52 +02:00 • committed by GitHub
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src/librustc_typeck/check/closure.rs
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@ -178,7 +178,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
match expected_ty.kind {
ty::Dynamic(ref object_type, ..) => {
let sig = object_type.projection_bounds().find_map(|pb| {
let pb = pb.with_self_ty(self.tcx, self.tcx.types.err);
let pb = pb.with_self_ty(self.tcx, self.tcx.types.trait_object_dummy_self);
self.deduce_sig_from_projection(None, &pb)
});
let kind = object_type