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| author | Tyler Mandry <tmandry@gmail.com> | 2019-10-10 16:38:53 -0700 |
|---|---|---|
| committer | Tyler Mandry <tmandry@gmail.com> | 2019-10-14 15:48:36 -0700 |
| commit | 802554f4274f6514cd2f8f618cae567adf18128f (patch) | |
| tree | a9718275803cb2c7049ca7732260231431ad679b | |
| parent | fe09bb518d9dfb270a6f3562b50b96272524b42c (diff) | |
| download | rust-802554f4274f6514cd2f8f618cae567adf18128f.tar.gz rust-802554f4274f6514cd2f8f618cae567adf18128f.zip | |
Only expand types that contain projections
| -rw-r--r-- | src/librustc/ty/util.rs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/librustc/ty/util.rs b/src/librustc/ty/util.rs index 35bd42fd744..6a94ca6b8c7 100644 --- a/src/librustc/ty/util.rs +++ b/src/librustc/ty/util.rs @@ -745,8 +745,10 @@ impl<'tcx> TyCtxt<'tcx> { fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { if let ty::Opaque(def_id, substs) = t.kind { self.expand_opaque_ty(def_id, substs).unwrap_or(t) - } else { + } else if t.has_projections() { t.super_fold_with(self) + } else { + t } } } |