From 63ed62531324cd4660deb7faff58e6c17b93b487 Mon Sep 17 00:00:00 2001
From: Charles Lew <crlf0710@gmail.com>
Date: Sat, 31 Jul 2021 22:46:23 +0800
Subject: Implement pointer casting.

---
 compiler/rustc_query_impl/src/keys.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'compiler/rustc_query_impl')

diff --git a/compiler/rustc_query_impl/src/keys.rs b/compiler/rustc_query_impl/src/keys.rs
index 0ad360c7d89..ace7cffd16d 100644
--- a/compiler/rustc_query_impl/src/keys.rs
+++ b/compiler/rustc_query_impl/src/keys.rs
@@ -282,6 +282,16 @@ impl<'tcx> Key for ty::PolyTraitRef<'tcx> {
     }
 }
 
+impl<'tcx> Key for (ty::PolyTraitRef<'tcx>, ty::PolyTraitRef<'tcx>) {
+    #[inline(always)]
+    fn query_crate_is_local(&self) -> bool {
+        self.0.def_id().krate == LOCAL_CRATE
+    }
+    fn default_span(&self, tcx: TyCtxt<'_>) -> Span {
+        tcx.def_span(self.0.def_id())
+    }
+}
+
 impl<'tcx> Key for GenericArg<'tcx> {
     #[inline(always)]
     fn query_crate_is_local(&self) -> bool {
-- 
cgit 1.4.1-3-g733a5