Revert "rustc_middle: parallel: TyCtxt: remove "unsafe impl DynSend/DynSync""

lqd · lqd · commit ca64815c7021 · 2025-03-06T09:16:24.000Z
This reverts commit 8eba29a.
diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs
@@ -1327,6 +1327,9 @@ pub struct TyCtxt<'tcx> {
     gcx: &'tcx GlobalCtxt<'tcx>,
 }
 
+// Explicitly implement `DynSync` and `DynSend` for `TyCtxt` to short circuit trait resolution.
+unsafe impl DynSend for TyCtxt<'_> {}
+unsafe impl DynSync for TyCtxt<'_> {}
 fn _assert_tcx_fields() {
     sync::assert_dyn_sync::<&'_ GlobalCtxt<'_>>();
     sync::assert_dyn_send::<&'_ GlobalCtxt<'_>>();

Original file line number	Diff line number	Diff line change
`@@ -1327,6 +1327,9 @@ pub struct TyCtxt<'tcx> {`
`1327`	`1327`	`gcx: &'tcx GlobalCtxt<'tcx>,`
`1328`	`1328`	`}`
`1329`	`1329`
	`1330`	+// Explicitly implement `DynSync` and `DynSend` for `TyCtxt` to short circuit trait resolution.
	`1331`	`+unsafe impl DynSend for TyCtxt<'_> {}`
	`1332`	`+unsafe impl DynSync for TyCtxt<'_> {}`
`1330`	`1333`	`fn _assert_tcx_fields() {`
`1331`	`1334`	`sync::assert_dyn_sync::<&'_ GlobalCtxt<'_>>();`
`1332`	`1335`	`sync::assert_dyn_send::<&'_ GlobalCtxt<'_>>();`