Change or_patterns_back_compat lint to rust_2021_incompatible_or_patterns

compiler/rustc_expand/src/mbe/macro_rules.rs

@@ -18,7 +18,9 @@
 use rustc_data_structures::sync::Lrc;
 use rustc_errors::{Applicability, DiagnosticBuilder};
 use rustc_feature::Features;
-use rustc_lint_defs::builtin::{OR_PATTERNS_BACK_COMPAT, SEMICOLON_IN_EXPRESSIONS_FROM_MACROS};
+use rustc_lint_defs::builtin::{
+    RUST_2021_INCOMPATIBLE_OR_PATTERNS, SEMICOLON_IN_EXPRESSIONS_FROM_MACROS,
+};
 use rustc_lint_defs::BuiltinLintDiagnostics;
 use rustc_parse::parser::Parser;
 use rustc_session::parse::ParseSess;
@@ -975,7 +977,7 @@ fn check_matcher_core(
                             Some(NonterminalKind::PatParam { inferred: false }),
                         ));
                         sess.buffer_lint_with_diagnostic(
-                            &OR_PATTERNS_BACK_COMPAT,
+                            &RUST_2021_INCOMPATIBLE_OR_PATTERNS,
                             span,
                             ast::CRATE_NODE_ID,
                             "the meaning of the `pat` fragment specifier is changing in Rust 2021, which may affect this macro",

compiler/rustc_lint/src/lib.rs

@@ -326,6 +326,7 @@ fn register_builtins(store: &mut LintStore, no_interleave_lints: bool) {
     store.register_renamed("overlapping_patterns", "overlapping_range_endpoints");
     store.register_renamed("safe_packed_borrows", "unaligned_references");
     store.register_renamed("disjoint_capture_migration", "rust_2021_incompatible_closure_captures");
+    store.register_renamed("or_patterns_back_compat", "rust_2021_incompatible_or_patterns");
 
     // These were moved to tool lints, but rustc still sees them when compiling normally, before
     // tool lints are registered, so `check_tool_name_for_backwards_compat` doesn't work. Use

compiler/rustc_lint_defs/src/builtin.rs

@@ -2970,7 +2970,7 @@
         RUST_2021_INCOMPATIBLE_CLOSURE_CAPTURES,
         LEGACY_DERIVE_HELPERS,
         PROC_MACRO_BACK_COMPAT,
-        OR_PATTERNS_BACK_COMPAT,
+        RUST_2021_INCOMPATIBLE_OR_PATTERNS,
         LARGE_ASSIGNMENTS,
         FUTURE_PRELUDE_COLLISION,
         RESERVED_PREFIX,
@@ -3183,12 +3183,12 @@
 }
 
 declare_lint! {
-    /// The `or_patterns_back_compat` lint detects usage of old versions of or-patterns.
+    /// The `rust_2021_incompatible_or_patterns` lint detects usage of old versions of or-patterns.
     ///
     /// ### Example
     ///
     /// ```rust,compile_fail
-    /// #![deny(or_patterns_back_compat)]
+    /// #![deny(rust_2021_incompatible_or_patterns)]
     /// macro_rules! match_any {
     ///     ( $expr:expr , $( $( $pat:pat )|+ => $expr_arm:expr ),+ ) => {
     ///         match $expr {
@@ -3211,7 +3211,7 @@
     /// ### Explanation
     ///
     /// In Rust 2021, the pat matcher will match new patterns, which include the | character.
-    pub OR_PATTERNS_BACK_COMPAT,
+    pub RUST_2021_INCOMPATIBLE_OR_PATTERNS,
     Allow,
     "detects usage of old versions of or-patterns",
     @future_incompatible = FutureIncompatibleInfo {

library/core/src/lib.rs

@@ -164,6 +164,7 @@
 #![feature(no_niche)] // rust-lang/rust#68303
 #![feature(no_coverage)] // rust-lang/rust#84605
 #![deny(unsafe_op_in_unsafe_fn)]
+#![allow(renamed_and_removed_lints)]
 #![deny(or_patterns_back_compat)]
 
 // allow using `core::` in intra-doc links

src/test/ui/macros/macro-or-patterns-back-compat.fixed

 // run-rustfix
 // aux-build:or-pattern.rs
 
-#![deny(or_patterns_back_compat)]
+#![deny(rust_2021_incompatible_or_patterns)]
 #![allow(unused_macros)]
 
 #[macro_use]

src/test/ui/macros/macro-or-patterns-back-compat.rs

 // run-rustfix
 // aux-build:or-pattern.rs
 
-#![deny(or_patterns_back_compat)]
+#![deny(rust_2021_incompatible_or_patterns)]
 #![allow(unused_macros)]
 
 #[macro_use]

src/test/ui/macros/macro-or-patterns-back-compat.stderr

@@ -7,8 +7,8 @@ LL | macro_rules! foo { ($x:pat | $y:pat) => {} }
 note: the lint level is defined here
   --> $DIR/macro-or-patterns-back-compat.rs:4:9
    |
-LL | #![deny(or_patterns_back_compat)]
-   |         ^^^^^^^^^^^^^^^^^^^^^^^
+LL | #![deny(rust_2021_incompatible_or_patterns)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
    = note: for more information, see issue #84869 <https://github.com/rust-lang/rust/issues/84869>