2 files changed, 8 insertions, 5 deletions
diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs
index d4dfb9f2973..5cf231d5668 100644
--- a/compiler/rustc_hir/src/hir.rs
+++ b/compiler/rustc_hir/src/hir.rs
@@ -3373,13 +3373,16 @@ pub struct OpaqueTy<'hir> {
     pub span: Span,
 }
 
-#[derive(Debug, Clone, Copy, HashStable_Generic)]
-pub enum PreciseCapturingArg<'hir> {
-    Lifetime(&'hir Lifetime),
+#[derive(Debug, Clone, Copy, HashStable_Generic, Encodable, Decodable)]
+pub enum PreciseCapturingArgKind<T, U> {
+    Lifetime(T),
     /// Non-lifetime argument (type or const)
-    Param(PreciseCapturingNonLifetimeArg),
+    Param(U),
 }
 
+pub type PreciseCapturingArg<'hir> =
+    PreciseCapturingArgKind<&'hir Lifetime, PreciseCapturingNonLifetimeArg>;
+
 impl PreciseCapturingArg<'_> {
     pub fn hir_id(self) -> HirId {
         match self {
diff --git a/compiler/rustc_hir/src/lib.rs b/compiler/rustc_hir/src/lib.rs
index 270d4fbec30..4a839d40571 100644
--- a/compiler/rustc_hir/src/lib.rs
+++ b/compiler/rustc_hir/src/lib.rs
@@ -4,6 +4,7 @@
 
 // tidy-alphabetical-start
 #![allow(internal_features)]
+#![cfg_attr(doc, recursion_limit = "256")] // FIXME(nnethercote): will be removed by #124141
 #![feature(associated_type_defaults)]
 #![feature(box_patterns)]
 #![feature(closure_track_caller)]
@@ -13,7 +14,6 @@
 #![feature(never_type)]
 #![feature(rustc_attrs)]
 #![feature(variant_count)]
-#![warn(unreachable_pub)]
 // tidy-alphabetical-end
 
 extern crate self as rustc_hir;