Adjust some pubs.

compiler/rustc_builtin_macros/src/alloc_error_handler.rs

@@ -9,7 +9,7 @@ use rustc_span::symbol::{kw, sym, Ident};
 use rustc_span::Span;
 use thin_vec::{thin_vec, ThinVec};
 
-pub fn expand(
+pub(crate) fn expand(
     ecx: &mut ExtCtxt<'_>,
     _span: Span,
     meta_item: &ast::MetaItem,

compiler/rustc_builtin_macros/src/assert.rs

@@ -15,7 +15,7 @@ use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::{Span, DUMMY_SP};
 use thin_vec::thin_vec;
 
-pub fn expand_assert<'cx>(
+pub(crate) fn expand_assert<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     span: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/cfg.rs

@@ -11,7 +11,7 @@ use rustc_errors::PResult;
 use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacEager, MacroExpanderResult};
 use rustc_span::Span;
 
-pub fn expand_cfg(
+pub(crate) fn expand_cfg(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/compile_error.rs

@@ -5,7 +5,7 @@ use rustc_ast::tokenstream::TokenStream;
 use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacroExpanderResult};
 use rustc_span::Span;
 
-pub fn expand_compile_error<'cx>(
+pub(crate) fn expand_compile_error<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/concat.rs

@@ -6,7 +6,7 @@ use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacEager, MacroExpa
 use rustc_session::errors::report_lit_error;
 use rustc_span::symbol::Symbol;
 
-pub fn expand_concat(
+pub(crate) fn expand_concat(
     cx: &mut ExtCtxt<'_>,
     sp: rustc_span::Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/concat_bytes.rs

@@ -107,7 +107,7 @@ fn handle_array_element(
     None
 }
 
-pub fn expand_concat_bytes(
+pub(crate) fn expand_concat_bytes(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/concat_idents.rs

@@ -8,7 +8,7 @@ use rustc_span::Span;
 
 use crate::errors;
 
-pub fn expand_concat_idents<'cx>(
+pub(crate) fn expand_concat_idents<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/deriving/bounds.rs

@@ -5,7 +5,7 @@ use rustc_ast::MetaItem;
 use rustc_expand::base::{Annotatable, ExtCtxt};
 use rustc_span::Span;
 
-pub fn expand_deriving_copy(
+pub(crate) fn expand_deriving_copy(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,
@@ -28,7 +28,7 @@ pub fn expand_deriving_copy(
     trait_def.expand(cx, mitem, item, push);
 }
 
-pub fn expand_deriving_const_param_ty(
+pub(crate) fn expand_deriving_const_param_ty(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/clone.rs

@@ -8,7 +8,7 @@ use rustc_span::symbol::{kw, sym, Ident};
 use rustc_span::Span;
 use thin_vec::{thin_vec, ThinVec};
 
-pub fn expand_deriving_clone(
+pub(crate) fn expand_deriving_clone(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/cmp/eq.rs

@@ -9,7 +9,7 @@ use rustc_span::symbol::sym;
 use rustc_span::Span;
 use thin_vec::{thin_vec, ThinVec};
 
-pub fn expand_deriving_eq(
+pub(crate) fn expand_deriving_eq(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/cmp/ord.rs

@@ -7,7 +7,7 @@ use rustc_span::symbol::{sym, Ident};
 use rustc_span::Span;
 use thin_vec::thin_vec;
 
-pub fn expand_deriving_ord(
+pub(crate) fn expand_deriving_ord(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,
@@ -39,7 +39,7 @@ pub fn expand_deriving_ord(
     trait_def.expand(cx, mitem, item, push)
 }
 
-pub fn cs_cmp(cx: &ExtCtxt<'_>, span: Span, substr: &Substructure<'_>) -> BlockOrExpr {
+pub(crate) fn cs_cmp(cx: &ExtCtxt<'_>, span: Span, substr: &Substructure<'_>) -> BlockOrExpr {
     let test_id = Ident::new(sym::cmp, span);
     let equal_path = cx.path_global(span, cx.std_path(&[sym::cmp, sym::Ordering, sym::Equal]));
     let cmp_path = cx.std_path(&[sym::cmp, sym::Ord, sym::cmp]);

compiler/rustc_builtin_macros/src/deriving/cmp/partial_eq.rs

@@ -8,7 +8,7 @@ use rustc_span::symbol::sym;
 use rustc_span::Span;
 use thin_vec::thin_vec;
 
-pub fn expand_deriving_partial_eq(
+pub(crate) fn expand_deriving_partial_eq(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/cmp/partial_ord.rs

@@ -7,7 +7,7 @@ use rustc_span::symbol::{sym, Ident};
 use rustc_span::Span;
 use thin_vec::thin_vec;
 
-pub fn expand_deriving_partial_ord(
+pub(crate) fn expand_deriving_partial_ord(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/debug.rs

@@ -8,7 +8,7 @@ use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::Span;
 use thin_vec::{thin_vec, ThinVec};
 
-pub fn expand_deriving_debug(
+pub(crate) fn expand_deriving_debug(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/decodable.rs

@@ -10,7 +10,7 @@ use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::Span;
 use thin_vec::{thin_vec, ThinVec};
 
-pub fn expand_deriving_rustc_decodable(
+pub(crate) fn expand_deriving_rustc_decodable(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/default.rs

@@ -12,7 +12,7 @@ use rustc_span::{ErrorGuaranteed, Span};
 use smallvec::SmallVec;
 use thin_vec::{thin_vec, ThinVec};
 
-pub fn expand_deriving_default(
+pub(crate) fn expand_deriving_default(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &ast::MetaItem,

compiler/rustc_builtin_macros/src/deriving/encodable.rs

@@ -94,7 +94,7 @@ use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::Span;
 use thin_vec::{thin_vec, ThinVec};
 
-pub fn expand_deriving_rustc_encodable(
+pub(crate) fn expand_deriving_rustc_encodable(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/generic/mod.rs

@@ -174,8 +174,8 @@
 //! )
 //! ```
 
-pub use StaticFields::*;
-pub use SubstructureFields::*;
+pub(crate) use StaticFields::*;
+pub(crate) use SubstructureFields::*;
 
 use crate::{deriving, errors};
 use rustc_ast::ptr::P;
@@ -195,9 +195,9 @@ use std::vec;
 use thin_vec::{thin_vec, ThinVec};
 use ty::{Bounds, Path, Ref, Self_, Ty};
 
-pub mod ty;
+pub(crate) mod ty;
 
-pub struct TraitDef<'a> {
+pub(crate) struct TraitDef<'a> {
     /// The span for the current #[derive(Foo)] header.
     pub span: Span,
 
@@ -224,7 +224,7 @@ pub struct TraitDef<'a> {
     pub is_const: bool,
 }
 
-pub struct MethodDef<'a> {
+pub(crate) struct MethodDef<'a> {
     /// name of the method
     pub name: Symbol,
     /// List of generics, e.g., `R: rand::Rng`
@@ -248,7 +248,7 @@ pub struct MethodDef<'a> {
 
 /// How to handle fieldless enum variants.
 #[derive(PartialEq)]
-pub enum FieldlessVariantsStrategy {
+pub(crate) enum FieldlessVariantsStrategy {
     /// Combine fieldless variants into a single match arm.
     /// This assumes that relevant information has been handled
     /// by looking at the enum's discriminant.
@@ -263,7 +263,7 @@ pub enum FieldlessVariantsStrategy {
 }
 
 /// All the data about the data structure/method being derived upon.
-pub struct Substructure<'a> {
+pub(crate) struct Substructure<'a> {
     /// ident of self
     pub type_ident: Ident,
     /// Verbatim access to any non-selflike arguments, i.e. arguments that
@@ -273,7 +273,7 @@ pub struct Substructure<'a> {
 }
 
 /// Summary of the relevant parts of a struct/enum field.
-pub struct FieldInfo {
+pub(crate) struct FieldInfo {
     pub span: Span,
     /// None for tuple structs/normal enum variants, Some for normal
     /// structs/struct enum variants.
@@ -287,13 +287,13 @@ pub struct FieldInfo {
 }
 
 #[derive(Copy, Clone)]
-pub enum IsTuple {
+pub(crate) enum IsTuple {
     No,
     Yes,
 }
 
 /// Fields for a static method
-pub enum StaticFields {
+pub(crate) enum StaticFields {
     /// Tuple and unit structs/enum variants like this.
     Unnamed(Vec<Span>, IsTuple),
     /// Normal structs/struct variants.
@@ -301,7 +301,7 @@ pub enum StaticFields {
 }
 
 /// A summary of the possible sets of fields.
-pub enum SubstructureFields<'a> {
+pub(crate) enum SubstructureFields<'a> {
     /// A non-static method where `Self` is a struct.
     Struct(&'a ast::VariantData, Vec<FieldInfo>),
 
@@ -329,10 +329,10 @@ pub enum SubstructureFields<'a> {
 
 /// Combine the values of all the fields together. The last argument is
 /// all the fields of all the structures.
-pub type CombineSubstructureFunc<'a> =
+pub(crate) type CombineSubstructureFunc<'a> =
     Box<dyn FnMut(&ExtCtxt<'_>, Span, &Substructure<'_>) -> BlockOrExpr + 'a>;
 
-pub fn combine_substructure(
+pub(crate) fn combine_substructure(
     f: CombineSubstructureFunc<'_>,
 ) -> RefCell<CombineSubstructureFunc<'_>> {
     RefCell::new(f)
@@ -349,7 +349,7 @@ struct TypeParameter {
 /// avoiding the insertion of any unnecessary blocks.
 ///
 /// The statements come before the expression.
-pub struct BlockOrExpr(ThinVec<ast::Stmt>, Option<P<Expr>>);
+pub(crate) struct BlockOrExpr(ThinVec<ast::Stmt>, Option<P<Expr>>);
 
 impl BlockOrExpr {
     pub fn new_stmts(stmts: ThinVec<ast::Stmt>) -> BlockOrExpr {
@@ -1647,7 +1647,7 @@ impl<'a> TraitDef<'a> {
 /// The function passed to `cs_fold` is called repeatedly with a value of this
 /// type. It describes one part of the code generation. The result is always an
 /// expression.
-pub enum CsFold<'a> {
+pub(crate) enum CsFold<'a> {
     /// The basic case: a field expression for one or more selflike args. E.g.
     /// for `PartialEq::eq` this is something like `self.x == other.x`.
     Single(&'a FieldInfo),
@@ -1662,7 +1662,7 @@ pub enum CsFold<'a> {
 
 /// Folds over fields, combining the expressions for each field in a sequence.
 /// Statics may not be folded over.
-pub fn cs_fold<F>(
+pub(crate) fn cs_fold<F>(
     use_foldl: bool,
     cx: &ExtCtxt<'_>,
     trait_span: Span,

compiler/rustc_builtin_macros/src/deriving/generic/ty.rs

@@ -1,7 +1,7 @@
 //! A mini version of ast::Ty, which is easier to use, and features an explicit `Self` type to use
 //! when specifying impls to be derived.
 
-pub use Ty::*;
+pub(crate) use Ty::*;
 
 use rustc_ast::ptr::P;
 use rustc_ast::{self as ast, Expr, GenericArg, GenericParamKind, Generics, SelfKind};
@@ -14,14 +14,14 @@ use thin_vec::ThinVec;
 /// A path, e.g., `::std::option::Option::<i32>` (global). Has support
 /// for type parameters.
 #[derive(Clone)]
-pub struct Path {
+pub(crate) struct Path {
     path: Vec<Symbol>,
     params: Vec<Box<Ty>>,
     kind: PathKind,
 }
 
 #[derive(Clone)]
-pub enum PathKind {
+pub(crate) enum PathKind {
     Local,
     Global,
     Std,
@@ -72,7 +72,7 @@ impl Path {
 
 /// A type. Supports pointers, Self, and literals.
 #[derive(Clone)]
-pub enum Ty {
+pub(crate) enum Ty {
     Self_,
     /// A reference.
     Ref(Box<Ty>, ast::Mutability),
@@ -83,7 +83,7 @@ pub enum Ty {
     Unit,
 }
 
-pub fn self_ref() -> Ty {
+pub(crate) fn self_ref() -> Ty {
     Ref(Box::new(Self_), ast::Mutability::Not)
 }
 
@@ -163,7 +163,7 @@ fn mk_ty_param(
 
 /// Bounds on type parameters.
 #[derive(Clone)]
-pub struct Bounds {
+pub(crate) struct Bounds {
     pub bounds: Vec<(Symbol, Vec<Path>)>,
 }
 
@@ -196,7 +196,7 @@ impl Bounds {
     }
 }
 
-pub fn get_explicit_self(cx: &ExtCtxt<'_>, span: Span) -> (P<Expr>, ast::ExplicitSelf) {
+pub(crate) fn get_explicit_self(cx: &ExtCtxt<'_>, span: Span) -> (P<Expr>, ast::ExplicitSelf) {
     // This constructs a fresh `self` path.
     let self_path = cx.expr_self(span);
     let self_ty = respan(span, SelfKind::Region(None, ast::Mutability::Not));

compiler/rustc_builtin_macros/src/deriving/hash.rs

@@ -7,7 +7,7 @@ use rustc_span::symbol::sym;
 use rustc_span::Span;
 use thin_vec::thin_vec;
 
-pub fn expand_deriving_hash(
+pub(crate) fn expand_deriving_hash(
     cx: &ExtCtxt<'_>,
     span: Span,
     mitem: &MetaItem,

compiler/rustc_builtin_macros/src/deriving/mod.rs

@@ -20,24 +20,24 @@ macro path_std($($x:tt)*) {
     generic::ty::Path::new( pathvec_std!( $($x)* ) )
 }
 
-pub mod bounds;
-pub mod clone;
-pub mod debug;
-pub mod decodable;
-pub mod default;
-pub mod encodable;
-pub mod hash;
+pub(crate) mod bounds;
+pub(crate) mod clone;
+pub(crate) mod debug;
+pub(crate) mod decodable;
+pub(crate) mod default;
+pub(crate) mod encodable;
+pub(crate) mod hash;
 
 #[path = "cmp/eq.rs"]
-pub mod eq;
+pub(crate) mod eq;
 #[path = "cmp/ord.rs"]
-pub mod ord;
+pub(crate) mod ord;
 #[path = "cmp/partial_eq.rs"]
-pub mod partial_eq;
+pub(crate) mod partial_eq;
 #[path = "cmp/partial_ord.rs"]
-pub mod partial_ord;
+pub(crate) mod partial_ord;
 
-pub mod generic;
+pub(crate) mod generic;
 
 pub(crate) type BuiltinDeriveFn =
     fn(&ExtCtxt<'_>, Span, &MetaItem, &Annotatable, &mut dyn FnMut(Annotatable), bool);

compiler/rustc_builtin_macros/src/edition_panic.rs

@@ -16,7 +16,7 @@ use rustc_span::Span;
 ///
 /// `$crate` will refer to either the `std` or `core` crate depending on which
 /// one we're expanding from.
-pub fn expand_panic<'cx>(
+pub(crate) fn expand_panic<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -29,7 +29,7 @@ pub fn expand_panic<'cx>(
 /// - `$crate::panic::unreachable_2015!(...)` or
 /// - `$crate::panic::unreachable_2021!(...)`
 /// depending on the edition.
-pub fn expand_unreachable<'cx>(
+pub(crate) fn expand_unreachable<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -69,7 +69,7 @@ fn expand<'cx>(
     ))
 }
 
-pub fn use_panic_2021(mut span: Span) -> bool {
+pub(crate) fn use_panic_2021(mut span: Span) -> bool {
     // To determine the edition, we check the first span up the expansion
     // stack that does not have #[allow_internal_unstable(edition_panic)].
     // (To avoid using the edition of e.g. the assert!() or debug_assert!() definition.)

compiler/rustc_builtin_macros/src/env.rs

@@ -25,7 +25,7 @@ fn lookup_env<'cx>(cx: &'cx ExtCtxt<'_>, var: Symbol) -> Result<Symbol, VarError
     Ok(Symbol::intern(&env::var(var)?))
 }
 
-pub fn expand_option_env<'cx>(
+pub(crate) fn expand_option_env<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -65,7 +65,7 @@ pub fn expand_option_env<'cx>(
     ExpandResult::Ready(MacEager::expr(e))
 }
 
-pub fn expand_env<'cx>(
+pub(crate) fn expand_env<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/errors.rs

@@ -579,7 +579,7 @@ pub(crate) struct FormatUnknownTrait<'a> {
     style = "tool-only",
     applicability = "maybe-incorrect"
 )]
-pub struct FormatUnknownTraitSugg {
+pub(crate) struct FormatUnknownTraitSugg {
     #[primary_span]
     pub span: Span,
     pub fmt: &'static str,

compiler/rustc_builtin_macros/src/format.rs

@@ -1000,7 +1000,7 @@ fn expand_format_args_impl<'cx>(
     })
 }
 
-pub fn expand_format_args<'cx>(
+pub(crate) fn expand_format_args<'cx>(
     ecx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -1008,7 +1008,7 @@ pub fn expand_format_args<'cx>(
     expand_format_args_impl(ecx, sp, tts, false)
 }
 
-pub fn expand_format_args_nl<'cx>(
+pub(crate) fn expand_format_args_nl<'cx>(
     ecx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/global_allocator.rs

@@ -12,7 +12,7 @@ use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::Span;
 use thin_vec::{thin_vec, ThinVec};
 
-pub fn expand(
+pub(crate) fn expand(
     ecx: &mut ExtCtxt<'_>,
     _span: Span,
     meta_item: &ast::MetaItem,

compiler/rustc_builtin_macros/src/log_syntax.rs

@@ -2,7 +2,7 @@ use rustc_ast::tokenstream::TokenStream;
 use rustc_ast_pretty::pprust;
 use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacroExpanderResult};
 
-pub fn expand_log_syntax<'cx>(
+pub(crate) fn expand_log_syntax<'cx>(
     _cx: &'cx mut ExtCtxt<'_>,
     sp: rustc_span::Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/pattern_type.rs

@@ -3,7 +3,7 @@ use rustc_errors::PResult;
 use rustc_expand::base::{self, DummyResult, ExpandResult, ExtCtxt, MacroExpanderResult};
 use rustc_span::{sym, Span};
 
-pub fn expand<'cx>(
+pub(crate) fn expand<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/source_util.rs

@@ -26,7 +26,7 @@ use std::rc::Rc;
 // a given file into the current one.
 
 /// line!(): expands to the current line number
-pub fn expand_line(
+pub(crate) fn expand_line(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -41,7 +41,7 @@ pub fn expand_line(
 }
 
 /* column!(): expands to the current column number */
-pub fn expand_column(
+pub(crate) fn expand_column(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -58,7 +58,7 @@ pub fn expand_column(
 /// file!(): expands to the current filename */
 /// The source_file (`loc.file`) contains a bunch more information we could spit
 /// out if we wanted.
-pub fn expand_file(
+pub(crate) fn expand_file(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -78,7 +78,7 @@ pub fn expand_file(
     )))
 }
 
-pub fn expand_stringify(
+pub(crate) fn expand_stringify(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -88,7 +88,7 @@ pub fn expand_stringify(
     ExpandResult::Ready(MacEager::expr(cx.expr_str(sp, Symbol::intern(&s))))
 }
 
-pub fn expand_mod(
+pub(crate) fn expand_mod(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -104,7 +104,7 @@ pub fn expand_mod(
 /// include! : parse the given file as an expr
 /// This is generally a bad idea because it's going to behave
 /// unhygienically.
-pub fn expand_include<'cx>(
+pub(crate) fn expand_include<'cx>(
     cx: &'cx mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -181,7 +181,7 @@ pub fn expand_include<'cx>(
 }
 
 /// `include_str!`: read the given file, insert it as a literal string expr
-pub fn expand_include_str(
+pub(crate) fn expand_include_str(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,
@@ -210,7 +210,7 @@ pub fn expand_include_str(
     })
 }
 
-pub fn expand_include_bytes(
+pub(crate) fn expand_include_bytes(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tts: TokenStream,

compiler/rustc_builtin_macros/src/test.rs

@@ -20,7 +20,7 @@ use thin_vec::{thin_vec, ThinVec};
 ///
 /// We mark item with an inert attribute "rustc_test_marker" which the test generation
 /// logic will pick up on.
-pub fn expand_test_case(
+pub(crate) fn expand_test_case(
     ecx: &mut ExtCtxt<'_>,
     attr_sp: Span,
     meta_item: &ast::MetaItem,
@@ -73,7 +73,7 @@ pub fn expand_test_case(
     vec![ret]
 }
 
-pub fn expand_test(
+pub(crate) fn expand_test(
     cx: &mut ExtCtxt<'_>,
     attr_sp: Span,
     meta_item: &ast::MetaItem,
@@ -84,7 +84,7 @@ pub fn expand_test(
     expand_test_or_bench(cx, attr_sp, item, false)
 }
 
-pub fn expand_bench(
+pub(crate) fn expand_bench(
     cx: &mut ExtCtxt<'_>,
     attr_sp: Span,
     meta_item: &ast::MetaItem,
@@ -95,7 +95,7 @@ pub fn expand_bench(
     expand_test_or_bench(cx, attr_sp, item, true)
 }
 
-pub fn expand_test_or_bench(
+pub(crate) fn expand_test_or_bench(
     cx: &ExtCtxt<'_>,
     attr_sp: Span,
     item: Annotatable,

compiler/rustc_builtin_macros/src/trace_macros.rs

@@ -4,7 +4,7 @@ use rustc_expand::base::{DummyResult, ExpandResult, ExtCtxt, MacroExpanderResult
 use rustc_span::symbol::kw;
 use rustc_span::Span;
 
-pub fn expand_trace_macros(
+pub(crate) fn expand_trace_macros(
     cx: &mut ExtCtxt<'_>,
     sp: Span,
     tt: TokenStream,

compiler/rustc_builtin_macros/src/util.rs

@@ -10,7 +10,7 @@ use rustc_parse::{parser, validate_attr};
 use rustc_session::errors::report_lit_error;
 use rustc_span::{BytePos, Span, Symbol};
 
-pub fn check_builtin_macro_attribute(ecx: &ExtCtxt<'_>, meta_item: &MetaItem, name: Symbol) {
+pub(crate) fn check_builtin_macro_attribute(ecx: &ExtCtxt<'_>, meta_item: &MetaItem, name: Symbol) {
     // All the built-in macro attributes are "words" at the moment.
     let template = AttributeTemplate { word: true, ..Default::default() };
     validate_attr::check_builtin_meta_item(
@@ -24,7 +24,7 @@ pub fn check_builtin_macro_attribute(ecx: &ExtCtxt<'_>, meta_item: &MetaItem, na
 
 /// Emit a warning if the item is annotated with the given attribute. This is used to diagnose when
 /// an attribute may have been mistakenly duplicated.
-pub fn warn_on_duplicate_attribute(ecx: &ExtCtxt<'_>, item: &Annotatable, name: Symbol) {
+pub(crate) fn warn_on_duplicate_attribute(ecx: &ExtCtxt<'_>, item: &Annotatable, name: Symbol) {
     let attrs: Option<&[Attribute]> = match item {
         Annotatable::Item(item) => Some(&item.attrs),
         Annotatable::TraitItem(item) => Some(&item.attrs),