Auto merge of #74395 - Mark-Simulacrum:stage0-next, r=pietroalbini

Bump version to 1.47

This also bumps to a more recent rustfmt version, just to keep us relatively up to date (though almost nothing has changed in rustfmt we use beyond bumps to the parser infra). No formatting changes as a result of this.

r? @pietroalbini

src/bootstrap/channel.rs

@@ -13,7 +13,7 @@ use build_helper::output;
 use crate::Build;
 
 // The version number
-pub const CFG_RELEASE_NUM: &str = "1.46.0";
+pub const CFG_RELEASE_NUM: &str = "1.47.0";
 
 pub struct GitInfo {
     inner: Option<Info>,

src/bootstrap/compile.rs

@@ -159,13 +159,7 @@ fn copy_self_contained_objects(
     compiler: &Compiler,
     target: Interned<String>,
 ) -> Vec<(PathBuf, DependencyType)> {
-    // cfg(bootstrap)
-    // Remove when upgrading bootstrap compiler.
-    let libdir_self_contained = if compiler.stage == 0 {
-        builder.sysroot_libdir(*compiler, target).to_path_buf()
-    } else {
-        builder.sysroot_libdir(*compiler, target).join("self-contained")
-    };
+    let libdir_self_contained = builder.sysroot_libdir(*compiler, target).join("self-contained");
     t!(fs::create_dir_all(&libdir_self_contained));
     let mut target_deps = vec![];
 

src/ci/docker/host-x86_64/i686-gnu-nopt/Dockerfile

@@ -11,6 +11,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   cmake \
   sudo \
   gdb \
+  zlib1g-dev \
+  lib32z1-dev \
   xz-utils
 
 

src/ci/docker/host-x86_64/i686-gnu/Dockerfile

@@ -11,6 +11,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   cmake \
   sudo \
   gdb \
+  zlib1g-dev \
+  lib32z1-dev \
   xz-utils
 
 

src/liballoc/lib.rs

@@ -87,7 +87,6 @@
 #![feature(const_generic_impls_guard)]
 #![feature(const_generics)]
 #![feature(const_in_array_repeat_expressions)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(cow_is_borrowed)]
 #![feature(deque_range)]
 #![feature(dispatch_from_dyn)]

src/libcore/intrinsics.rs

@@ -1927,7 +1927,6 @@ extern "rust-intrinsic" {
     /// The to-be-stabilized version of this intrinsic is
     /// [`std::mem::variant_count`](../../std/mem/fn.variant_count.html)
     #[rustc_const_unstable(feature = "variant_count", issue = "73662")]
-    #[cfg(not(bootstrap))]
     pub fn variant_count<T>() -> usize;
 
     /// Rust's "try catch" construct which invokes the function pointer `try_fn`
@@ -1958,7 +1957,6 @@ extern "rust-intrinsic" {
     /// Internal placeholder for injecting code coverage counters when the "instrument-coverage"
     /// option is enabled. The placeholder is replaced with `llvm.instrprof.increment` during code
     /// generation.
-    #[cfg(not(bootstrap))]
     #[lang = "count_code_region"]
     pub fn count_code_region(index: u32, start_byte_pos: u32, end_byte_pos: u32);
 
@@ -1968,7 +1966,6 @@ extern "rust-intrinsic" {
     /// "coverage map", which is injected into the generated code, as additional data.
     /// This marker identifies a code region and two other counters or counter expressions
     /// whose sum is the number of times the code region was executed.
-    #[cfg(not(bootstrap))]
     pub fn coverage_counter_add(
         index: u32,
         left_index: u32,
@@ -1980,7 +1977,6 @@ extern "rust-intrinsic" {
     /// This marker identifies a code region and two other counters or counter expressions
     /// whose difference is the number of times the code region was executed.
     /// (See `coverage_counter_add` for more information.)
-    #[cfg(not(bootstrap))]
     pub fn coverage_counter_subtract(
         index: u32,
         left_index: u32,
@@ -1992,17 +1988,14 @@ extern "rust-intrinsic" {
     /// This marker identifies a code region to be added to the "coverage map" to indicate source
     /// code that can never be reached.
     /// (See `coverage_counter_add` for more information.)
-    #[cfg(not(bootstrap))]
     pub fn coverage_unreachable(start_byte_pos: u32, end_byte_pos: u32);
 
     /// See documentation of `<*const T>::guaranteed_eq` for details.
     #[rustc_const_unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
-    #[cfg(not(bootstrap))]
     pub fn ptr_guaranteed_eq<T>(ptr: *const T, other: *const T) -> bool;
 
     /// See documentation of `<*const T>::guaranteed_ne` for details.
     #[rustc_const_unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
-    #[cfg(not(bootstrap))]
     pub fn ptr_guaranteed_ne<T>(ptr: *const T, other: *const T) -> bool;
 }
 

src/libcore/lib.rs

@@ -73,8 +73,6 @@
 #![feature(const_ascii_ctype_on_intrinsics)]
 #![feature(const_alloc_layout)]
 #![feature(const_discriminant)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
-#![cfg_attr(bootstrap, feature(const_loop))]
 #![feature(const_checked_int_methods)]
 #![feature(const_euclidean_int_methods)]
 #![feature(const_overflowing_int_methods)]
@@ -87,7 +85,7 @@
 #![feature(const_generics)]
 #![feature(const_ptr_offset)]
 #![feature(const_ptr_offset_from)]
-#![cfg_attr(not(bootstrap), feature(const_raw_ptr_comparison))]
+#![feature(const_raw_ptr_comparison)]
 #![feature(const_result)]
 #![feature(const_slice_from_raw_parts)]
 #![feature(const_slice_ptr_len)]
@@ -121,13 +119,12 @@
 #![feature(staged_api)]
 #![feature(std_internals)]
 #![feature(stmt_expr_attributes)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 #![feature(transparent_unions)]
 #![feature(unboxed_closures)]
 #![feature(unsized_locals)]
 #![feature(untagged_unions)]
 #![feature(unwind_attributes)]
-#![cfg_attr(not(bootstrap), feature(variant_count))]
+#![feature(variant_count)]
 #![feature(doc_alias)]
 #![feature(mmx_target_feature)]
 #![feature(tbm_target_feature)]
@@ -142,7 +139,7 @@
 #![feature(rtm_target_feature)]
 #![feature(f16c_target_feature)]
 #![feature(hexagon_target_feature)]
-#![cfg_attr(not(bootstrap), feature(const_fn_transmute))]
+#![feature(const_fn_transmute)]
 #![feature(abi_unadjusted)]
 #![feature(adx_target_feature)]
 #![feature(maybe_uninit_slice)]
@@ -293,7 +290,7 @@ pub mod primitive;
 )]
 // FIXME: This annotation should be moved into rust-lang/stdarch after clashing_extern_declarations is
 // merged. It currently cannot because bootstrap fails as the lint hasn't been defined yet.
-#[cfg_attr(not(bootstrap), allow(clashing_extern_declarations))]
+#[allow(clashing_extern_declarations)]
 #[unstable(feature = "stdsimd", issue = "48556")]
 mod core_arch;
 

src/libcore/mem/mod.rs

@@ -1037,7 +1037,6 @@ pub const fn discriminant<T>(v: &T) -> Discriminant<T> {
 /// assert_eq!(mem::variant_count::<Result<!, !>>(), 2);
 /// ```
 #[inline(always)]
-#[cfg(not(bootstrap))]
 #[unstable(feature = "variant_count", issue = "73662")]
 #[rustc_const_unstable(feature = "variant_count", issue = "73662")]
 pub const fn variant_count<T>() -> usize {

src/libcore/num/mod.rs

@@ -21,14 +21,6 @@ macro_rules! try_opt {
     };
 }
 
-#[cfg(bootstrap)]
-macro_rules! unlikely {
-    ($e: expr) => {
-        $e
-    };
-}
-
-#[cfg(not(bootstrap))]
 #[allow_internal_unstable(const_likely)]
 macro_rules! unlikely {
     ($e: expr) => {
@@ -1600,7 +1592,6 @@ $EndFeature, "
             #[stable(feature = "no_panic_abs", since = "1.13.0")]
             #[rustc_const_stable(feature = "const_int_methods", since = "1.32.0")]
             #[allow(unused_attributes)]
-            #[cfg_attr(bootstrap, allow_internal_unstable(const_if_match))]
             #[inline]
             pub const fn wrapping_abs(self) -> Self {
                  if self.is_negative() {
@@ -1889,7 +1880,6 @@ assert_eq!(", stringify!($SelfT), "::MIN.overflowing_neg(), (", stringify!($Self
             #[stable(feature = "wrapping", since = "1.7.0")]
             #[rustc_const_stable(feature = "const_int_methods", since = "1.32.0")]
             #[allow(unused_attributes)]
-            #[cfg_attr(bootstrap, allow_internal_unstable(const_if_match))]
             pub const fn overflowing_neg(self) -> (Self, bool) {
                 if unlikely!(self == Self::MIN) {
                     (Self::MIN, true)
@@ -2182,7 +2172,6 @@ $EndFeature, "
             #[stable(feature = "rust1", since = "1.0.0")]
             #[rustc_const_stable(feature = "const_int_methods", since = "1.32.0")]
             #[allow(unused_attributes)]
-            #[cfg_attr(bootstrap, allow_internal_unstable(const_if_match))]
             #[inline]
             #[rustc_inherit_overflow_checks]
             pub const fn abs(self) -> Self {

src/libcore/ops/function.rs

@@ -224,7 +224,7 @@ pub trait FnMut<Args>: FnOnce<Args> {
 #[must_use = "closures are lazy and do nothing unless called"]
 pub trait FnOnce<Args> {
     /// The returned type after the call operator is used.
-    #[cfg_attr(not(bootstrap), lang = "fn_once_output")]
+    #[lang = "fn_once_output"]
     #[stable(feature = "fn_once_output", since = "1.12.0")]
     type Output;
 

src/libcore/ptr/const_ptr.rs

@@ -324,7 +324,6 @@ impl<T: ?Sized> *const T {
     #[unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
     #[rustc_const_unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
     #[inline]
-    #[cfg(not(bootstrap))]
     pub const fn guaranteed_eq(self, other: *const T) -> bool
     where
         T: Sized,
@@ -356,7 +355,6 @@ impl<T: ?Sized> *const T {
     #[unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
     #[rustc_const_unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
     #[inline]
-    #[cfg(not(bootstrap))]
     pub const fn guaranteed_ne(self, other: *const T) -> bool
     where
         T: Sized,

src/libcore/ptr/mut_ptr.rs

@@ -305,7 +305,6 @@ impl<T: ?Sized> *mut T {
     #[unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
     #[rustc_const_unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
     #[inline]
-    #[cfg(not(bootstrap))]
     pub const fn guaranteed_eq(self, other: *mut T) -> bool
     where
         T: Sized,
@@ -337,7 +336,6 @@ impl<T: ?Sized> *mut T {
     #[unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
     #[rustc_const_unstable(feature = "const_raw_ptr_comparison", issue = "53020")]
     #[inline]
-    #[cfg(not(bootstrap))]
     pub const unsafe fn guaranteed_ne(self, other: *mut T) -> bool
     where
         T: Sized,

src/libcore/slice/mod.rs

@@ -6233,14 +6233,8 @@ where
             return false;
         }
 
-        #[cfg(bootstrap)]
-        if self.as_ptr() == other.as_ptr() {
-            return true;
-        }
-
         // While performance would suffer if `guaranteed_eq` just returned `false`
         // for all arguments, correctness and return value of this function are not affected.
-        #[cfg(not(bootstrap))]
         if self.as_ptr().guaranteed_eq(other.as_ptr()) {
             return true;
         }
@@ -6259,14 +6253,8 @@ where
             return false;
         }
 
-        #[cfg(bootstrap)]
-        if self.as_ptr() == other.as_ptr() {
-            return true;
-        }
-
         // While performance would suffer if `guaranteed_eq` just returned `false`
         // for all arguments, correctness and return value of this function are not affected.
-        #[cfg(not(bootstrap))]
         if self.as_ptr().guaranteed_eq(other.as_ptr()) {
             return true;
         }

src/libpanic_abort/lib.rs

@@ -21,7 +21,7 @@
 use core::any::Any;
 
 #[rustc_std_internal_symbol]
-#[cfg_attr(not(bootstrap), allow(improper_ctypes_definitions))]
+#[allow(improper_ctypes_definitions)]
 pub unsafe extern "C" fn __rust_panic_cleanup(_: *mut u8) -> *mut (dyn Any + Send + 'static) {
     unreachable!()
 }

src/libpanic_unwind/lib.rs

@@ -93,7 +93,7 @@ extern "C" {
 mod dwarf;
 
 #[rustc_std_internal_symbol]
-#[cfg_attr(not(bootstrap), allow(improper_ctypes_definitions))]
+#[allow(improper_ctypes_definitions)]
 pub unsafe extern "C" fn __rust_panic_cleanup(payload: *mut u8) -> *mut (dyn Any + Send + 'static) {
     Box::into_raw(imp::cleanup(payload))
 }

src/librustc_ast/lib.rs

@@ -7,10 +7,9 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/", test(attr(deny(warnings))))]
 #![feature(bool_to_option)]
 #![feature(box_syntax)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)] // For the `transmute` in `P::new`
 #![feature(const_panic)]
-#![cfg_attr(not(bootstrap), feature(const_fn_transmute))]
+#![feature(const_fn_transmute)]
 #![feature(crate_visibility_modifier)]
 #![feature(label_break_value)]
 #![feature(nll)]

src/librustc_driver/lib.rs

@@ -6,7 +6,6 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![feature(nll)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 #![recursion_limit = "256"]
 
 #[macro_use]

src/librustc_errors/lib.rs

@@ -5,7 +5,6 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![feature(crate_visibility_modifier)]
 #![feature(nll)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 
 pub use emitter::ColorConfig;
 

src/librustc_hir/lib.rs

@@ -3,7 +3,6 @@
 //! [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/hir.html
 
 #![feature(crate_visibility_modifier)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)] // For the unsizing cast on `&[]`
 #![feature(const_panic)]
 #![feature(in_band_lifetimes)]

src/librustc_index/lib.rs

@@ -1,5 +1,4 @@
 #![feature(allow_internal_unstable)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)]
 #![feature(const_panic)]
 #![feature(extend_one)]

src/librustc_infer/lib.rs

@@ -17,7 +17,6 @@
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 #![feature(const_fn)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_panic)]
 #![feature(extend_one)]
 #![feature(never_type)]

src/librustc_lint/lib.rs

@@ -34,7 +34,6 @@
 #![feature(never_type)]
 #![feature(nll)]
 #![feature(or_patterns)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 #![recursion_limit = "256"]
 
 #[macro_use]

src/librustc_llvm/lib.rs

@@ -15,7 +15,7 @@ pub struct RustString {
 
 /// Appending to a Rust string -- used by RawRustStringOstream.
 #[no_mangle]
-#[cfg_attr(not(bootstrap), allow(improper_ctypes_definitions))]
+#[allow(improper_ctypes_definitions)]
 pub unsafe extern "C" fn LLVMRustStringWriteImpl(
     sr: &RustString,
     ptr: *const c_char,

src/librustc_middle/lib.rs

@@ -27,10 +27,9 @@
 #![feature(bool_to_option)]
 #![feature(box_patterns)]
 #![feature(box_syntax)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)]
 #![feature(const_panic)]
-#![cfg_attr(not(bootstrap), feature(const_fn_transmute))]
+#![feature(const_fn_transmute)]
 #![feature(core_intrinsics)]
 #![feature(discriminant_kind)]
 #![feature(drain_filter)]
@@ -42,7 +41,6 @@
 #![feature(or_patterns)]
 #![feature(range_is_empty)]
 #![feature(min_specialization)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 #![feature(trusted_len)]
 #![feature(stmt_expr_attributes)]
 #![feature(test)]

src/librustc_mir/lib.rs

@@ -10,8 +10,6 @@ Rust MIR: a lowered representation of Rust.
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 #![feature(const_fn)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
-#![cfg_attr(bootstrap, feature(const_loop))]
 #![feature(const_panic)]
 #![feature(crate_visibility_modifier)]
 #![feature(decl_macro)]

src/librustc_mir_build/lib.rs

@@ -4,7 +4,6 @@
 
 #![feature(box_patterns)]
 #![feature(box_syntax)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)]
 #![feature(const_panic)]
 #![feature(crate_visibility_modifier)]

src/librustc_passes/lib.rs

@@ -8,7 +8,6 @@
 #![feature(in_band_lifetimes)]
 #![feature(nll)]
 #![feature(or_patterns)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 #![recursion_limit = "256"]
 
 #[macro_use]

src/librustc_privacy/lib.rs

@@ -2,7 +2,6 @@
 #![feature(in_band_lifetimes)]
 #![feature(nll)]
 #![feature(or_patterns)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 #![recursion_limit = "256"]
 
 use rustc_attr as attr;

src/librustc_query_system/lib.rs

@@ -1,6 +1,5 @@
 #![feature(bool_to_option)]
 #![feature(const_fn)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_panic)]
 #![feature(core_intrinsics)]
 #![feature(hash_raw_entry)]

src/librustc_save_analysis/lib.rs

@@ -1,7 +1,6 @@
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![feature(nll)]
 #![feature(or_patterns)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 #![recursion_limit = "256"]
 
 mod dump_visitor;

src/librustc_span/lib.rs

@@ -6,7 +6,6 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![feature(crate_visibility_modifier)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)]
 #![feature(const_panic)]
 #![feature(negative_impls)]

src/librustc_target/lib.rs

@@ -9,7 +9,6 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![feature(bool_to_option)]
-#![cfg_attr(bootstrap, feature(const_if_match))]
 #![feature(const_fn)]
 #![feature(const_panic)]
 #![feature(nll)]

src/libstd/lib.rs

@@ -320,7 +320,6 @@
 #![feature(toowned_clone_into)]
 #![feature(total_cmp)]
 #![feature(trace_macros)]
-#![cfg_attr(bootstrap, feature(track_caller))]
 #![feature(try_reserve)]
 #![feature(unboxed_closures)]
 #![feature(unsafe_block_in_unsafe_fn)]

src/libstd/sys/unix/args.rs

@@ -208,7 +208,7 @@ mod imp {
         #[cfg(target_arch = "aarch64")]
         extern "C" {
             fn objc_msgSend(obj: NsId, sel: Sel) -> NsId;
-            #[cfg_attr(not(bootstrap), allow(clashing_extern_declarations))]
+            #[allow(clashing_extern_declarations)]
             #[link_name = "objc_msgSend"]
             fn objc_msgSend_ul(obj: NsId, sel: Sel, i: libc::c_ulong) -> NsId;
         }
@@ -216,7 +216,7 @@ mod imp {
         #[cfg(not(target_arch = "aarch64"))]
         extern "C" {
             fn objc_msgSend(obj: NsId, sel: Sel, ...) -> NsId;
-            #[cfg_attr(not(bootstrap), allow(clashing_extern_declarations))]
+            #[allow(clashing_extern_declarations)]
             #[link_name = "objc_msgSend"]
             fn objc_msgSend_ul(obj: NsId, sel: Sel, ...) -> NsId;
         }

src/stage0.txt

@@ -12,7 +12,7 @@
 # source tarball for a stable release you'll likely see `1.x.0` for rustc and
 # `0.(x+1).0` for Cargo where they were released on `date`.
 
-date: 2020-06-16
+date: 2020-07-16
 rustc: beta
 cargo: beta
 
@@ -20,7 +20,7 @@ cargo: beta
 # bootstrapping issues with use of new syntax in this repo. If you're looking at
 # the beta/stable branch, this key should be omitted, as we don't want to depend
 # on rustfmt from nightly there.
-rustfmt: nightly-2020-04-22
+rustfmt: nightly-2020-07-12
 
 # When making a stable release the process currently looks like:
 #