From 449581d89bd8361d6eaa2d0e91c2197831658b1a Mon Sep 17 00:00:00 2001
From: bjorn3 <17426603+bjorn3@users.noreply.github.com>
Date: Sun, 30 Jun 2024 15:10:34 +0000
Subject: [PATCH] Remove usage of specialization from rustc_borrowck

---
 compiler/rustc_borrowck/src/facts.rs | 28 ++++++++++++++++++++++++++--
 compiler/rustc_borrowck/src/lib.rs   |  1 -
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/compiler/rustc_borrowck/src/facts.rs b/compiler/rustc_borrowck/src/facts.rs
index 51ea59e2092a5..af96f11538503 100644
--- a/compiler/rustc_borrowck/src/facts.rs
+++ b/compiler/rustc_borrowck/src/facts.rs
@@ -213,8 +213,32 @@ trait FactCell {
     fn to_string(&self, location_table: &LocationTable) -> String;
 }
 
-impl<A: Debug> FactCell for A {
-    default fn to_string(&self, _location_table: &LocationTable) -> String {
+impl FactCell for BorrowIndex {
+    fn to_string(&self, _location_table: &LocationTable) -> String {
+        format!("{self:?}")
+    }
+}
+
+impl FactCell for Local {
+    fn to_string(&self, _location_table: &LocationTable) -> String {
+        format!("{self:?}")
+    }
+}
+
+impl FactCell for MovePathIndex {
+    fn to_string(&self, _location_table: &LocationTable) -> String {
+        format!("{self:?}")
+    }
+}
+
+impl FactCell for PoloniusRegionVid {
+    fn to_string(&self, _location_table: &LocationTable) -> String {
+        format!("{self:?}")
+    }
+}
+
+impl FactCell for RegionVid {
+    fn to_string(&self, _location_table: &LocationTable) -> String {
         format!("{self:?}")
     }
 }
diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs
index 69efee2fbdc14..91c0a39073863 100644
--- a/compiler/rustc_borrowck/src/lib.rs
+++ b/compiler/rustc_borrowck/src/lib.rs
@@ -7,7 +7,6 @@
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
 #![feature(let_chains)]
-#![feature(min_specialization)]
 #![feature(never_type)]
 #![feature(rustc_attrs)]
 #![feature(rustdoc_internals)]