Auto merge of #62086 - petrochenkov:builtout, r=eddyb

Define built-in macros through libcore

This PR defines built-in macros through libcore using a scheme similar to lang items (attribute `#[rustc_builtin_macro]`).
All the macro properties (stability, visibility, etc.) are taken from the source code in libcore, with exception of the expander function transforming input tokens/AST into output tokens/AST, which is still provided by the compiler.

The macros are made available to user code through the standard library prelude (`{core,std}::prelude::v1`), so they are still always in scope.
As a result **built-in macros now have stable absolute addresses in the library**, like `core::prelude::v1::line!()`, this is an insta-stable change.

Right now `prelude::v1` is the only publicly available absolute address for these macros, but eventually they can be moved into more appropriate locations with library team approval (e.g. `Clone` derive -> `core::clone::Clone`).

Now when built-in macros have canonical definitions they can be imported or reexported without issues (https://github.com/rust-lang/rust/issues/61687).

Other changes:
- You can now define a derive macro with a name matching one of the built-in derives (https://github.com/rust-lang/rust/issues/52269). This was an artificial restriction that could be worked around with import renaming anyway.

Known regressions:
- Empty library crate with a crate-level `#![test]` attribute no longer compiles without `--test`. Previously it didn't compile *with* `--test` or with the bin crate type.

Fixes https://github.com/rust-lang/rust/issues/61687
Fixes https://github.com/rust-lang/rust/issues/61804
r? @eddyb

4 files changed, 105 insertions, 539 deletions

diff --git a/src/libstd/error.rs b/src/libstd/error.rs
index 5b1e78a1139..117a430eec6 100644
--- a/src/libstd/error.rs
+++ b/src/libstd/error.rs
@@ -254,8 +254,8 @@ impl<'a, E: Error + 'a> From<E> for Box<dyn Error + 'a> {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<'a, E: Error + Send + Sync + 'a> From<E> for Box<dyn Error + Send + Sync + 'a> {
-    /// Converts a type of [`Error`] + [`Send`] + [`Sync`] into a box of dyn [`Error`] +
-    /// [`Send`] + [`Sync`].
+    /// Converts a type of [`Error`] + [`trait@Send`] + [`trait@Sync`] into a box of
+    /// dyn [`Error`] + [`trait@Send`] + [`trait@Sync`].
     ///
     /// [`Error`]: ../error/trait.Error.html
     ///
@@ -298,7 +298,7 @@ impl<'a, E: Error + Send + Sync + 'a> From<E> for Box<dyn Error + Send + Sync +
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl From<String> for Box<dyn Error + Send + Sync> {
-    /// Converts a [`String`] into a box of dyn [`Error`] + [`Send`] + [`Sync`].
+    /// Converts a [`String`] into a box of dyn [`Error`] + [`trait@Send`] + [`trait@Sync`].
     ///
     /// [`Error`]: ../error/trait.Error.html
     ///
@@ -362,7 +362,7 @@ impl From<String> for Box<dyn Error> {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<'a> From<&str> for Box<dyn Error + Send + Sync + 'a> {
-    /// Converts a [`str`] into a box of dyn [`Error`] + [`Send`] + [`Sync`].
+    /// Converts a [`str`] into a box of dyn [`Error`] + [`trait@Send`] + [`trait@Sync`].
     ///
     /// [`Error`]: ../error/trait.Error.html
     ///
@@ -405,7 +405,7 @@ impl From<&str> for Box<dyn Error> {
 
 #[stable(feature = "cow_box_error", since = "1.22.0")]
 impl<'a, 'b> From<Cow<'b, str>> for Box<dyn Error + Send + Sync + 'a> {
-    /// Converts a [`Cow`] into a box of dyn [`Error`] + [`Send`] + [`Sync`].
+    /// Converts a [`Cow`] into a box of dyn [`Error`] + [`trait@Send`] + [`trait@Sync`].
     ///
     /// [`Cow`]: ../borrow/enum.Cow.html
     /// [`Error`]: ../error/trait.Error.html
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index fbc68c610ee..722c08a22a6 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -221,14 +221,15 @@
 
 #![cfg_attr(test, feature(print_internals, set_stdio, test, update_panic_count))]
 #![cfg_attr(all(target_vendor = "fortanix", target_env = "sgx"),
-            feature(global_asm, slice_index_methods,
-                    decl_macro, coerce_unsized, sgx_platform, ptr_wrapping_offset_from))]
+            feature(slice_index_methods, decl_macro, coerce_unsized,
+                    sgx_platform, ptr_wrapping_offset_from))]
 #![cfg_attr(all(test, target_vendor = "fortanix", target_env = "sgx"),
             feature(fixed_size_array, maybe_uninit_extra))]
 
 // std is implemented with unstable features, many of which are internal
 // compiler details that will never be stable
 // NB: the following list is sorted to minimize merge conflicts.
+#![cfg_attr(not(bootstrap), feature(__rust_unstable_column))]
 #![feature(alloc_error_handler)]
 #![feature(alloc_layout_extra)]
 #![feature(allocator_api)]
@@ -251,6 +252,7 @@
 #![feature(const_cstr_unchecked)]
 #![feature(const_raw_ptr_deref)]
 #![feature(core_intrinsics)]
+#![feature(custom_test_frameworks)]
 #![feature(doc_alias)]
 #![feature(doc_cfg)]
 #![feature(doc_keyword)]
@@ -262,7 +264,9 @@
 #![feature(exhaustive_patterns)]
 #![feature(external_doc)]
 #![feature(fn_traits)]
+#![feature(format_args_nl)]
 #![feature(generator_trait)]
+#![feature(global_asm)]
 #![feature(hash_raw_entry)]
 #![feature(hashmap_internals)]
 #![feature(int_error_internals)]
@@ -272,6 +276,7 @@
 #![feature(libc)]
 #![feature(link_args)]
 #![feature(linkage)]
+#![feature(log_syntax)]
 #![feature(maybe_uninit_ref)]
 #![feature(maybe_uninit_slice)]
 #![feature(mem_take)]
@@ -303,6 +308,7 @@
 #![feature(thread_local)]
 #![feature(todo_macro)]
 #![feature(toowned_clone_into)]
+#![feature(trace_macros)]
 #![feature(try_reserve)]
 #![feature(unboxed_closures)]
 #![feature(untagged_unions)]
@@ -510,6 +516,36 @@ mod std_detect;
 #[cfg(not(test))]
 pub use std_detect::detect;
 
+// Document built-in macros in the crate root for consistency with libcore and existing tradition.
+// FIXME: Attribute and derive macros are not reexported because rustdoc renders them
+// as reexports rather than as macros, and that's not what we want.
+#[cfg(rustdoc)]
+#[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
+pub use crate::prelude::v1::{
+    __rust_unstable_column,
+    asm,
+    assert,
+    cfg,
+    column,
+    compile_error,
+    concat,
+    concat_idents,
+    env,
+    file,
+    format_args,
+    format_args_nl,
+    global_asm,
+    include,
+    include_bytes,
+    include_str,
+    line,
+    log_syntax,
+    module_path,
+    option_env,
+    stringify,
+    trace_macros,
+};
+
 // Include a number of private modules that exist solely to provide
 // the rustdoc documentation for primitive types. Using `include!`
 // because rustdoc only looks for these modules at the crate level.
diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
index b3e09d69742..839b4c5656a 100644
--- a/src/libstd/macros.rs
+++ b/src/libstd/macros.rs
@@ -365,534 +365,3 @@ macro_rules! assert_approx_eq {
                 "{} is not approximately equal to {}", *a, *b);
     })
 }
-
-/// Built-in macros to the compiler itself.
-///
-/// These macros do not have any corresponding definition with a `macro_rules!`
-/// macro, but are documented here. Their implementations can be found hardcoded
-/// into libsyntax itself.
-#[cfg(rustdoc)]
-mod builtin {
-
-    /// Causes compilation to fail with the given error message when encountered.
-    ///
-    /// This macro should be used when a crate uses a conditional compilation strategy to provide
-    /// better error messages for erroneous conditions. It's the compiler-level form of [`panic!`],
-    /// which emits an error at *runtime*, rather than during compilation.
-    ///
-    /// # Examples
-    ///
-    /// Two such examples are macros and `#[cfg]` environments.
-    ///
-    /// Emit better compiler error if a macro is passed invalid values. Without the final branch,
-    /// the compiler would still emit an error, but the error's message would not mention the two
-    /// valid values.
-    ///
-    /// ```compile_fail
-    /// macro_rules! give_me_foo_or_bar {
-    ///     (foo) => {};
-    ///     (bar) => {};
-    ///     ($x:ident) => {
-    ///         compile_error!("This macro only accepts `foo` or `bar`");
-    ///     }
-    /// }
-    ///
-    /// give_me_foo_or_bar!(neither);
-    /// // ^ will fail at compile time with message "This macro only accepts `foo` or `bar`"
-    /// ```
-    ///
-    /// Emit compiler error if one of a number of features isn't available.
-    ///
-    /// ```compile_fail
-    /// #[cfg(not(any(feature = "foo", feature = "bar")))]
-    /// compile_error!("Either feature \"foo\" or \"bar\" must be enabled for this crate.");
-    /// ```
-    ///
-    /// [`panic!`]: ../std/macro.panic.html
-    #[stable(feature = "compile_error_macro", since = "1.20.0")]
-    #[rustc_builtin_macro]
-    macro_rules! compile_error {
-        ($msg:expr) => ({ /* compiler built-in */ });
-        ($msg:expr,) => ({ /* compiler built-in */ });
-    }
-
-    /// Constructs parameters for the other string-formatting macros.
-    ///
-    /// This macro functions by taking a formatting string literal containing
-    /// `{}` for each additional argument passed. `format_args!` prepares the
-    /// additional parameters to ensure the output can be interpreted as a string
-    /// and canonicalizes the arguments into a single type. Any value that implements
-    /// the [`Display`] trait can be passed to `format_args!`, as can any
-    /// [`Debug`] implementation be passed to a `{:?}` within the formatting string.
-    ///
-    /// This macro produces a value of type [`fmt::Arguments`]. This value can be
-    /// passed to the macros within [`std::fmt`] for performing useful redirection.
-    /// All other formatting macros ([`format!`], [`write!`], [`println!`], etc) are
-    /// proxied through this one. `format_args!`, unlike its derived macros, avoids
-    /// heap allocations.
-    ///
-    /// You can use the [`fmt::Arguments`] value that `format_args!` returns
-    /// in `Debug` and `Display` contexts as seen below. The example also shows
-    /// that `Debug` and `Display` format to the same thing: the interpolated
-    /// format string in `format_args!`.
-    ///
-    /// ```rust
-    /// let debug = format!("{:?}", format_args!("{} foo {:?}", 1, 2));
-    /// let display = format!("{}", format_args!("{} foo {:?}", 1, 2));
-    /// assert_eq!("1 foo 2", display);
-    /// assert_eq!(display, debug);
-    /// ```
-    ///
-    /// For more information, see the documentation in [`std::fmt`].
-    ///
-    /// [`Display`]: ../std/fmt/trait.Display.html
-    /// [`Debug`]: ../std/fmt/trait.Debug.html
-    /// [`fmt::Arguments`]: ../std/fmt/struct.Arguments.html
-    /// [`std::fmt`]: ../std/fmt/index.html
-    /// [`format!`]: ../std/macro.format.html
-    /// [`write!`]: ../std/macro.write.html
-    /// [`println!`]: ../std/macro.println.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use std::fmt;
-    ///
-    /// let s = fmt::format(format_args!("hello {}", "world"));
-    /// assert_eq!(s, format!("hello {}", "world"));
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! format_args {
-        ($fmt:expr) => ({ /* compiler built-in */ });
-        ($fmt:expr, $($args:tt)*) => ({ /* compiler built-in */ });
-    }
-
-    /// Inspects an environment variable at compile time.
-    ///
-    /// This macro will expand to the value of the named environment variable at
-    /// compile time, yielding an expression of type `&'static str`.
-    ///
-    /// If the environment variable is not defined, then a compilation error
-    /// will be emitted. To not emit a compile error, use the [`option_env!`]
-    /// macro instead.
-    ///
-    /// [`option_env!`]: ../std/macro.option_env.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// let path: &'static str = env!("PATH");
-    /// println!("the $PATH variable at the time of compiling was: {}", path);
-    /// ```
-    ///
-    /// You can customize the error message by passing a string as the second
-    /// parameter:
-    ///
-    /// ```compile_fail
-    /// let doc: &'static str = env!("documentation", "what's that?!");
-    /// ```
-    ///
-    /// If the `documentation` environment variable is not defined, you'll get
-    /// the following error:
-    ///
-    /// ```text
-    /// error: what's that?!
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! env {
-        ($name:expr) => ({ /* compiler built-in */ });
-        ($name:expr,) => ({ /* compiler built-in */ });
-    }
-
-    /// Optionally inspects an environment variable at compile time.
-    ///
-    /// If the named environment variable is present at compile time, this will
-    /// expand into an expression of type `Option<&'static str>` whose value is
-    /// `Some` of the value of the environment variable. If the environment
-    /// variable is not present, then this will expand to `None`. See
-    /// [`Option<T>`][option] for more information on this type.
-    ///
-    /// A compile time error is never emitted when using this macro regardless
-    /// of whether the environment variable is present or not.
-    ///
-    /// [option]: ../std/option/enum.Option.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// let key: Option<&'static str> = option_env!("SECRET_KEY");
-    /// println!("the secret key might be: {:?}", key);
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! option_env {
-        ($name:expr) => ({ /* compiler built-in */ });
-        ($name:expr,) => ({ /* compiler built-in */ });
-    }
-
-    /// Concatenates identifiers into one identifier.
-    ///
-    /// This macro takes any number of comma-separated identifiers, and
-    /// concatenates them all into one, yielding an expression which is a new
-    /// identifier. Note that hygiene makes it such that this macro cannot
-    /// capture local variables. Also, as a general rule, macros are only
-    /// allowed in item, statement or expression position. That means while
-    /// you may use this macro for referring to existing variables, functions or
-    /// modules etc, you cannot define a new one with it.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// #![feature(concat_idents)]
-    ///
-    /// # fn main() {
-    /// fn foobar() -> u32 { 23 }
-    ///
-    /// let f = concat_idents!(foo, bar);
-    /// println!("{}", f());
-    ///
-    /// // fn concat_idents!(new, fun, name) { } // not usable in this way!
-    /// # }
-    /// ```
-    #[unstable(feature = "concat_idents_macro", issue = "29599")]
-    #[rustc_builtin_macro]
-    macro_rules! concat_idents {
-        ($($e:ident),+) => ({ /* compiler built-in */ });
-        ($($e:ident,)+) => ({ /* compiler built-in */ });
-    }
-
-    /// Concatenates literals into a static string slice.
-    ///
-    /// This macro takes any number of comma-separated literals, yielding an
-    /// expression of type `&'static str` which represents all of the literals
-    /// concatenated left-to-right.
-    ///
-    /// Integer and floating point literals are stringified in order to be
-    /// concatenated.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// let s = concat!("test", 10, 'b', true);
-    /// assert_eq!(s, "test10btrue");
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! concat {
-        ($($e:expr),*) => ({ /* compiler built-in */ });
-        ($($e:expr,)*) => ({ /* compiler built-in */ });
-    }
-
-    /// Expands to the line number on which it was invoked.
-    ///
-    /// With [`column!`] and [`file!`], these macros provide debugging information for
-    /// developers about the location within the source.
-    ///
-    /// The expanded expression has type `u32` and is 1-based, so the first line
-    /// in each file evaluates to 1, the second to 2, etc. This is consistent
-    /// with error messages by common compilers or popular editors.
-    /// The returned line is *not necessarily* the line of the `line!` invocation itself,
-    /// but rather the first macro invocation leading up to the invocation
-    /// of the `line!` macro.
-    ///
-    /// [`column!`]: macro.column.html
-    /// [`file!`]: macro.file.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// let current_line = line!();
-    /// println!("defined on line: {}", current_line);
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! line { () => ({ /* compiler built-in */ }) }
-
-    /// Expands to the column number at which it was invoked.
-    ///
-    /// With [`line!`] and [`file!`], these macros provide debugging information for
-    /// developers about the location within the source.
-    ///
-    /// The expanded expression has type `u32` and is 1-based, so the first column
-    /// in each line evaluates to 1, the second to 2, etc. This is consistent
-    /// with error messages by common compilers or popular editors.
-    /// The returned column is *not necessarily* the line of the `column!` invocation itself,
-    /// but rather the first macro invocation leading up to the invocation
-    /// of the `column!` macro.
-    ///
-    /// [`line!`]: macro.line.html
-    /// [`file!`]: macro.file.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// let current_col = column!();
-    /// println!("defined on column: {}", current_col);
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! column { () => ({ /* compiler built-in */ }) }
-
-    /// Expands to the file name in which it was invoked.
-    ///
-    /// With [`line!`] and [`column!`], these macros provide debugging information for
-    /// developers about the location within the source.
-    ///
-    ///
-    /// The expanded expression has type `&'static str`, and the returned file
-    /// is not the invocation of the `file!` macro itself, but rather the
-    /// first macro invocation leading up to the invocation of the `file!`
-    /// macro.
-    ///
-    /// [`line!`]: macro.line.html
-    /// [`column!`]: macro.column.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// let this_file = file!();
-    /// println!("defined in file: {}", this_file);
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! file { () => ({ /* compiler built-in */ }) }
-
-    /// Stringifies its arguments.
-    ///
-    /// This macro will yield an expression of type `&'static str` which is the
-    /// stringification of all the tokens passed to the macro. No restrictions
-    /// are placed on the syntax of the macro invocation itself.
-    ///
-    /// Note that the expanded results of the input tokens may change in the
-    /// future. You should be careful if you rely on the output.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// let one_plus_one = stringify!(1 + 1);
-    /// assert_eq!(one_plus_one, "1 + 1");
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! stringify { ($($t:tt)*) => ({ /* compiler built-in */ }) }
-
-    /// Includes a utf8-encoded file as a string.
-    ///
-    /// The file is located relative to the current file. (similarly to how
-    /// modules are found)
-    ///
-    /// This macro will yield an expression of type `&'static str` which is the
-    /// contents of the file.
-    ///
-    /// # Examples
-    ///
-    /// Assume there are two files in the same directory with the following
-    /// contents:
-    ///
-    /// File 'spanish.in':
-    ///
-    /// ```text
-    /// adiós
-    /// ```
-    ///
-    /// File 'main.rs':
-    ///
-    /// ```ignore (cannot-doctest-external-file-dependency)
-    /// fn main() {
-    ///     let my_str = include_str!("spanish.in");
-    ///     assert_eq!(my_str, "adiós\n");
-    ///     print!("{}", my_str);
-    /// }
-    /// ```
-    ///
-    /// Compiling 'main.rs' and running the resulting binary will print "adiós".
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! include_str {
-        ($file:expr) => ({ /* compiler built-in */ });
-        ($file:expr,) => ({ /* compiler built-in */ });
-    }
-
-    /// Includes a file as a reference to a byte array.
-    ///
-    /// The file is located relative to the current file. (similarly to how
-    /// modules are found)
-    ///
-    /// This macro will yield an expression of type `&'static [u8; N]` which is
-    /// the contents of the file.
-    ///
-    /// # Examples
-    ///
-    /// Assume there are two files in the same directory with the following
-    /// contents:
-    ///
-    /// File 'spanish.in':
-    ///
-    /// ```text
-    /// adiós
-    /// ```
-    ///
-    /// File 'main.rs':
-    ///
-    /// ```ignore (cannot-doctest-external-file-dependency)
-    /// fn main() {
-    ///     let bytes = include_bytes!("spanish.in");
-    ///     assert_eq!(bytes, b"adi\xc3\xb3s\n");
-    ///     print!("{}", String::from_utf8_lossy(bytes));
-    /// }
-    /// ```
-    ///
-    /// Compiling 'main.rs' and running the resulting binary will print "adiós".
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! include_bytes {
-        ($file:expr) => ({ /* compiler built-in */ });
-        ($file:expr,) => ({ /* compiler built-in */ });
-    }
-
-    /// Expands to a string that represents the current module path.
-    ///
-    /// The current module path can be thought of as the hierarchy of modules
-    /// leading back up to the crate root. The first component of the path
-    /// returned is the name of the crate currently being compiled.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// mod test {
-    ///     pub fn foo() {
-    ///         assert!(module_path!().ends_with("test"));
-    ///     }
-    /// }
-    ///
-    /// test::foo();
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! module_path { () => ({ /* compiler built-in */ }) }
-
-    /// Evaluates boolean combinations of configuration flags at compile-time.
-    ///
-    /// In addition to the `#[cfg]` attribute, this macro is provided to allow
-    /// boolean expression evaluation of configuration flags. This frequently
-    /// leads to less duplicated code.
-    ///
-    /// The syntax given to this macro is the same syntax as the [`cfg`]
-    /// attribute.
-    ///
-    /// [`cfg`]: ../reference/conditional-compilation.html#the-cfg-attribute
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// let my_directory = if cfg!(windows) {
-    ///     "windows-specific-directory"
-    /// } else {
-    ///     "unix-directory"
-    /// };
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! cfg { ($($cfg:tt)*) => ({ /* compiler built-in */ }) }
-
-    /// Parses a file as an expression or an item according to the context.
-    ///
-    /// The file is located relative to the current file (similarly to how
-    /// modules are found).
-    ///
-    /// Using this macro is often a bad idea, because if the file is
-    /// parsed as an expression, it is going to be placed in the
-    /// surrounding code unhygienically. This could result in variables
-    /// or functions being different from what the file expected if
-    /// there are variables or functions that have the same name in
-    /// the current file.
-    ///
-    /// # Examples
-    ///
-    /// Assume there are two files in the same directory with the following
-    /// contents:
-    ///
-    /// File 'monkeys.in':
-    ///
-    /// ```ignore (only-for-syntax-highlight)
-    /// ['🙈', '🙊', '🙉']
-    ///     .iter()
-    ///     .cycle()
-    ///     .take(6)
-    ///     .collect::<String>()
-    /// ```
-    ///
-    /// File 'main.rs':
-    ///
-    /// ```ignore (cannot-doctest-external-file-dependency)
-    /// fn main() {
-    ///     let my_string = include!("monkeys.in");
-    ///     assert_eq!("🙈🙊🙉🙈🙊🙉", my_string);
-    ///     println!("{}", my_string);
-    /// }
-    /// ```
-    ///
-    /// Compiling 'main.rs' and running the resulting binary will print
-    /// "🙈🙊🙉🙈🙊🙉".
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! include {
-        ($file:expr) => ({ /* compiler built-in */ });
-        ($file:expr,) => ({ /* compiler built-in */ });
-    }
-
-    /// Asserts that a boolean expression is `true` at runtime.
-    ///
-    /// This will invoke the [`panic!`] macro if the provided expression cannot be
-    /// evaluated to `true` at runtime.
-    ///
-    /// # Uses
-    ///
-    /// Assertions are always checked in both debug and release builds, and cannot
-    /// be disabled. See [`debug_assert!`] for assertions that are not enabled in
-    /// release builds by default.
-    ///
-    /// Unsafe code relies on `assert!` to enforce run-time invariants that, if
-    /// violated could lead to unsafety.
-    ///
-    /// Other use-cases of `assert!` include testing and enforcing run-time
-    /// invariants in safe code (whose violation cannot result in unsafety).
-    ///
-    /// # Custom Messages
-    ///
-    /// This macro has a second form, where a custom panic message can
-    /// be provided with or without arguments for formatting. See [`std::fmt`]
-    /// for syntax for this form.
-    ///
-    /// [`panic!`]: macro.panic.html
-    /// [`debug_assert!`]: macro.debug_assert.html
-    /// [`std::fmt`]: ../std/fmt/index.html
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// // the panic message for these assertions is the stringified value of the
-    /// // expression given.
-    /// assert!(true);
-    ///
-    /// fn some_computation() -> bool { true } // a very simple function
-    ///
-    /// assert!(some_computation());
-    ///
-    /// // assert with a custom message
-    /// let x = true;
-    /// assert!(x, "x wasn't true!");
-    ///
-    /// let a = 3; let b = 27;
-    /// assert!(a + b == 30, "a = {}, b = {}", a, b);
-    /// ```
-    #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_builtin_macro]
-    macro_rules! assert {
-        ($cond:expr) => ({ /* compiler built-in */ });
-        ($cond:expr,) => ({ /* compiler built-in */ });
-        ($cond:expr, $($arg:tt)+) => ({ /* compiler built-in */ });
-    }
-}
diff --git a/src/libstd/prelude/v1.rs b/src/libstd/prelude/v1.rs
index a863bebf4a2..7b12d2ee6f0 100644
--- a/src/libstd/prelude/v1.rs
+++ b/src/libstd/prelude/v1.rs
@@ -7,9 +7,13 @@
 #![stable(feature = "rust1", since = "1.0.0")]
 
 // Re-exported core operators
+#[cfg(bootstrap)]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[doc(no_inline)]
-pub use crate::marker::{Copy, Send, Sized, Sync, Unpin};
+pub use crate::marker::Copy;
+#[stable(feature = "rust1", since = "1.0.0")]
+#[doc(no_inline)]
+pub use crate::marker::{Send, Sized, Sync, Unpin};
 #[stable(feature = "rust1", since = "1.0.0")]
 #[doc(no_inline)]
 pub use crate::ops::{Drop, Fn, FnMut, FnOnce};
@@ -20,15 +24,18 @@ pub use crate::ops::{Drop, Fn, FnMut, FnOnce};
 pub use crate::mem::drop;
 
 // Re-exported types and traits
+#[cfg(bootstrap)]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[doc(no_inline)]
 pub use crate::clone::Clone;
+#[cfg(bootstrap)]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[doc(no_inline)]
 pub use crate::cmp::{PartialEq, PartialOrd, Eq, Ord};
 #[stable(feature = "rust1", since = "1.0.0")]
 #[doc(no_inline)]
 pub use crate::convert::{AsRef, AsMut, Into, From};
+#[cfg(bootstrap)]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[doc(no_inline)]
 pub use crate::default::Default;
@@ -45,6 +52,60 @@ pub use crate::option::Option::{self, Some, None};
 #[doc(no_inline)]
 pub use crate::result::Result::{self, Ok, Err};
 
+// Re-exported built-in macros
+#[cfg(not(bootstrap))]
+#[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
+#[doc(no_inline)]
+pub use core::prelude::v1::{
+    __rust_unstable_column,
+    asm,
+    assert,
+    cfg,
+    column,
+    compile_error,
+    concat,
+    concat_idents,
+    env,
+    file,
+    format_args,
+    format_args_nl,
+    global_asm,
+    include,
+    include_bytes,
+    include_str,
+    line,
+    log_syntax,
+    module_path,
+    option_env,
+    stringify,
+    trace_macros,
+};
+
+// FIXME: Attribute and derive macros are not documented because for them rustdoc generates
+// dead links which fail link checker testing.
+#[cfg(not(bootstrap))]
+#[stable(feature = "builtin_macro_prelude", since = "1.38.0")]
+#[allow(deprecated)]
+#[doc(hidden)]
+pub use core::prelude::v1::{
+    Clone,
+    Copy,
+    Debug,
+    Decodable,
+    Default,
+    Encodable,
+    Eq,
+    Hash,
+    Ord,
+    PartialEq,
+    PartialOrd,
+    RustcDecodable,
+    RustcEncodable,
+    bench,
+    global_allocator,
+    test,
+    test_case,
+};
 
 // The file so far is equivalent to src/libcore/prelude/v1.rs,
 // and below to src/liballoc/prelude.rs.