1 files changed, 39 insertions, 0 deletions
diff --git a/src/tools/clippy/clippy_utils/src/msrvs.rs b/src/tools/clippy/clippy_utils/src/msrvs.rs
new file mode 100644
index 000000000..9e238c6f1
--- /dev/null
+++ b/src/tools/clippy/clippy_utils/src/msrvs.rs
@@ -0,0 +1,39 @@
+use rustc_semver::RustcVersion;
+
+macro_rules! msrv_aliases {
+    ($($major:literal,$minor:literal,$patch:literal {
+        $($name:ident),* $(,)?
+    })*) => {
+        $($(
+        pub const $name: RustcVersion = RustcVersion::new($major, $minor, $patch);
+        )*)*
+    };
+}
+
+// names may refer to stabilized feature flags or library items
+msrv_aliases! {
+    1,62,0 { BOOL_THEN_SOME }
+    1,53,0 { OR_PATTERNS, MANUAL_BITS, BTREE_MAP_RETAIN, BTREE_SET_RETAIN }
+    1,52,0 { STR_SPLIT_ONCE, REM_EUCLID_CONST }
+    1,51,0 { BORROW_AS_PTR, UNSIGNED_ABS }
+    1,50,0 { BOOL_THEN }
+    1,47,0 { TAU }
+    1,46,0 { CONST_IF_MATCH }
+    1,45,0 { STR_STRIP_PREFIX }
+    1,43,0 { LOG2_10, LOG10_2 }
+    1,42,0 { MATCHES_MACRO, SLICE_PATTERNS, PTR_SLICE_RAW_PARTS }
+    1,41,0 { RE_REBALANCING_COHERENCE, RESULT_MAP_OR_ELSE }
+    1,40,0 { MEM_TAKE, NON_EXHAUSTIVE, OPTION_AS_DEREF }
+    1,38,0 { POINTER_CAST, REM_EUCLID }
+    1,37,0 { TYPE_ALIAS_ENUM_VARIANTS }
+    1,36,0 { ITERATOR_COPIED }
+    1,35,0 { OPTION_COPIED, RANGE_CONTAINS }
+    1,34,0 { TRY_FROM }
+    1,30,0 { ITERATOR_FIND_MAP, TOOL_ATTRIBUTES }
+    1,28,0 { FROM_BOOL }
+    1,26,0 { RANGE_INCLUSIVE, STRING_RETAIN }
+    1,18,0 { HASH_MAP_RETAIN, HASH_SET_RETAIN }
+    1,17,0 { FIELD_INIT_SHORTHAND, STATIC_IN_CONST, EXPECT_ERR }
+    1,16,0 { STR_REPEAT }
+    1,24,0 { IS_ASCII_DIGIT }
+}