Auto merge of #119251 - Enselic:rustc_lint-query-stability, r=cjgillot

rustc_lint: Enforce `rustc::potential_query_instability` lint

Stop allowing `rustc::potential_query_instability` on all of `rustc_lint` and instead allow it on a case-by-case basis if it is safe to do so. In this particular crate, all lints were safe to allow.

Part of https://github.com/rust-lang/rust/issues/84447 which is E-help-wanted.

2 files changed, 4 insertions, 4 deletions

diff --git a/compiler/rustc_errors/src/diagnostic.rs b/compiler/rustc_errors/src/diagnostic.rs
index c226b2d41bd..49431fb7b3f 100644
--- a/compiler/rustc_errors/src/diagnostic.rs
+++ b/compiler/rustc_errors/src/diagnostic.rs
@@ -3,7 +3,7 @@ use crate::{
     CodeSuggestion, DiagnosticBuilder, DiagnosticMessage, EmissionGuarantee, Level, MultiSpan,
     SubdiagnosticMessage, Substitution, SubstitutionPart, SuggestionStyle,
 };
-use rustc_data_structures::fx::FxHashMap;
+use rustc_data_structures::fx::{FxHashMap, FxIndexMap};
 use rustc_error_messages::fluent_value_from_str_list_sep_by_and;
 use rustc_error_messages::FluentValue;
 use rustc_lint_defs::{Applicability, LintExpectationId};
@@ -259,7 +259,7 @@ impl Diagnostic {
 
     pub(crate) fn update_unstable_expectation_id(
         &mut self,
-        unstable_to_stable: &FxHashMap<LintExpectationId, LintExpectationId>,
+        unstable_to_stable: &FxIndexMap<LintExpectationId, LintExpectationId>,
     ) {
         if let Level::Expect(expectation_id) | Level::Warning(Some(expectation_id)) =
             &mut self.level
diff --git a/compiler/rustc_errors/src/lib.rs b/compiler/rustc_errors/src/lib.rs
index e436591fdd9..e9507dcfed7 100644
--- a/compiler/rustc_errors/src/lib.rs
+++ b/compiler/rustc_errors/src/lib.rs
@@ -55,7 +55,7 @@ pub use termcolor::{Color, ColorSpec, WriteColor};
 use crate::diagnostic_impls::{DelayedAtWithNewline, DelayedAtWithoutNewline};
 use emitter::{is_case_difference, DynEmitter, Emitter, EmitterWriter};
 use registry::Registry;
-use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap, FxIndexSet};
+use rustc_data_structures::fx::{FxHashSet, FxIndexMap, FxIndexSet};
 use rustc_data_structures::stable_hasher::{Hash128, StableHasher};
 use rustc_data_structures::sync::{Lock, Lrc};
 use rustc_data_structures::AtomicRef;
@@ -1318,7 +1318,7 @@ impl DiagCtxt {
 
     pub fn update_unstable_expectation_id(
         &self,
-        unstable_to_stable: &FxHashMap<LintExpectationId, LintExpectationId>,
+        unstable_to_stable: &FxIndexMap<LintExpectationId, LintExpectationId>,
     ) {
         let mut inner = self.inner.borrow_mut();
         let diags = std::mem::take(&mut inner.unstable_expect_diagnostics);