From 2434d8cecfb228093277c1b4506ae47db1972de9 Mon Sep 17 00:00:00 2001
From: Nicholas Nethercote <n.nethercote@gmail.com>
Date: Fri, 1 Aug 2025 19:01:32 +1000
Subject: [PATCH] Remove unused arg from `path_append_impl`.

None of the impls use it.
---
 compiler/rustc_const_eval/src/util/type_name.rs           | 1 -
 compiler/rustc_lint/src/context.rs                        | 1 -
 compiler/rustc_middle/src/ty/print/mod.rs                 | 8 +-------
 compiler/rustc_middle/src/ty/print/pretty.rs              | 1 -
 compiler/rustc_symbol_mangling/src/legacy.rs              | 1 -
 compiler/rustc_symbol_mangling/src/v0.rs                  | 1 -
 .../src/error_reporting/infer/mod.rs                      | 1 -
 7 files changed, 1 insertion(+), 13 deletions(-)

diff --git a/compiler/rustc_const_eval/src/util/type_name.rs b/compiler/rustc_const_eval/src/util/type_name.rs
index 400ba23ae5f9..e6b9759819f1 100644
--- a/compiler/rustc_const_eval/src/util/type_name.rs
+++ b/compiler/rustc_const_eval/src/util/type_name.rs
@@ -89,7 +89,6 @@ impl<'tcx> Printer<'tcx> for AbsolutePathPrinter<'tcx> {
     fn path_append_impl(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
-        _disambiguated_data: &DisambiguatedDefPathData,
         self_ty: Ty<'tcx>,
         trait_ref: Option<ty::TraitRef<'tcx>>,
     ) -> Result<(), PrintError> {
diff --git a/compiler/rustc_lint/src/context.rs b/compiler/rustc_lint/src/context.rs
index 7e35d4d142bd..11181d10af5e 100644
--- a/compiler/rustc_lint/src/context.rs
+++ b/compiler/rustc_lint/src/context.rs
@@ -803,7 +803,6 @@ impl<'tcx> LateContext<'tcx> {
             fn path_append_impl(
                 &mut self,
                 print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
-                _disambiguated_data: &DisambiguatedDefPathData,
                 self_ty: Ty<'tcx>,
                 trait_ref: Option<ty::TraitRef<'tcx>>,
             ) -> Result<(), PrintError> {
diff --git a/compiler/rustc_middle/src/ty/print/mod.rs b/compiler/rustc_middle/src/ty/print/mod.rs
index 1fee9d945f65..8a125c7fe284 100644
--- a/compiler/rustc_middle/src/ty/print/mod.rs
+++ b/compiler/rustc_middle/src/ty/print/mod.rs
@@ -88,7 +88,6 @@ pub trait Printer<'tcx>: Sized {
     fn path_append_impl(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
-        disambiguated_data: &DisambiguatedDefPathData,
         self_ty: Ty<'tcx>,
         trait_ref: Option<ty::TraitRef<'tcx>>,
     ) -> Result<(), PrintError>;
@@ -236,12 +235,7 @@ pub trait Printer<'tcx>: Sized {
             // If the impl is not co-located with either self-type or
             // trait-type, then fallback to a format that identifies
             // the module more clearly.
-            self.path_append_impl(
-                |p| p.print_def_path(parent_def_id, &[]),
-                &key.disambiguated_data,
-                self_ty,
-                impl_trait_ref,
-            )
+            self.path_append_impl(|p| p.print_def_path(parent_def_id, &[]), self_ty, impl_trait_ref)
         } else {
             // Otherwise, try to give a good form that would be valid language
             // syntax. Preferably using associated item notation.
diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs
index 538179245c42..033f1e6cd064 100644
--- a/compiler/rustc_middle/src/ty/print/pretty.rs
+++ b/compiler/rustc_middle/src/ty/print/pretty.rs
@@ -2340,7 +2340,6 @@ impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx> {
     fn path_append_impl(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
-        _disambiguated_data: &DisambiguatedDefPathData,
         self_ty: Ty<'tcx>,
         trait_ref: Option<ty::TraitRef<'tcx>>,
     ) -> Result<(), PrintError> {
diff --git a/compiler/rustc_symbol_mangling/src/legacy.rs b/compiler/rustc_symbol_mangling/src/legacy.rs
index d1834abb32b0..aa8292c05044 100644
--- a/compiler/rustc_symbol_mangling/src/legacy.rs
+++ b/compiler/rustc_symbol_mangling/src/legacy.rs
@@ -332,7 +332,6 @@ impl<'tcx> Printer<'tcx> for SymbolPrinter<'tcx> {
     fn path_append_impl(
         &mut self,
         print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
-        _disambiguated_data: &DisambiguatedDefPathData,
         self_ty: Ty<'tcx>,
         trait_ref: Option<ty::TraitRef<'tcx>>,
     ) -> Result<(), PrintError> {
diff --git a/compiler/rustc_symbol_mangling/src/v0.rs b/compiler/rustc_symbol_mangling/src/v0.rs
index a34d8b4436ed..c2458ae814b7 100644
--- a/compiler/rustc_symbol_mangling/src/v0.rs
+++ b/compiler/rustc_symbol_mangling/src/v0.rs
@@ -846,7 +846,6 @@ impl<'tcx> Printer<'tcx> for SymbolMangler<'tcx> {
     fn path_append_impl(
         &mut self,
         _: impl FnOnce(&mut Self) -> Result<(), PrintError>,
-        _: &DisambiguatedDefPathData,
         _: Ty<'tcx>,
         _: Option<ty::TraitRef<'tcx>>,
     ) -> Result<(), PrintError> {
diff --git a/compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs b/compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs
index 8daa5d5347a0..ed8229154a9b 100644
--- a/compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs
+++ b/compiler/rustc_trait_selection/src/error_reporting/infer/mod.rs
@@ -269,7 +269,6 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> {
             fn path_append_impl(
                 &mut self,
                 _print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>,
-                _disambiguated_data: &DisambiguatedDefPathData,
                 _self_ty: Ty<'tcx>,
                 _trait_ref: Option<ty::TraitRef<'tcx>>,
             ) -> Result<(), PrintError> {