From 2f60cef412ab56b17c62f2ea44ce72094be8d947 Mon Sep 17 00:00:00 2001
From: Lukas Wirth <me@lukaswirth.dev>
Date: Sat, 2 Aug 2025 08:46:15 +0200
Subject: [PATCH] `Interner` arg to `EarlyBinder` does not affect auto traits

Conceptually `EarlyBinder` does not contain an `Interner` so it shouldn't tell Rust it does via `PhantomData`.
This is necessary for rust-analyzer as it stores `EarlyBinder`s in query results which require `Sync`, placing restrictions on our interner setup.
---
 compiler/rustc_type_ir/src/binder.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/rustc_type_ir/src/binder.rs b/compiler/rustc_type_ir/src/binder.rs
index a7b915c48455b..202d81df5aec3 100644
--- a/compiler/rustc_type_ir/src/binder.rs
+++ b/compiler/rustc_type_ir/src/binder.rs
@@ -357,7 +357,7 @@ impl<I: Interner> TypeVisitor<I> for ValidateBoundVars<I> {
 pub struct EarlyBinder<I: Interner, T> {
     value: T,
     #[derive_where(skip(Debug))]
-    _tcx: PhantomData<I>,
+    _tcx: PhantomData<fn() -> I>,
 }
 
 /// For early binders, you should first call `instantiate` before using any visitors.