rust-lang · Centril · Apr 1, 2019 · Apr 4, 2019 · Apr 5, 2019 · Apr 6, 2019
diff --git a/Cargo.lock b/Cargo.lock
@@ -1894,7 +1894,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "polonius-engine"
-version = "0.6.2"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "datafrog 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2328,7 +2328,7 @@ dependencies = [
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "polonius-engine 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polonius-engine 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-rayon 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-rayon-core 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_apfloat 0.0.0",
@@ -2828,7 +2828,7 @@ dependencies = [
  "graphviz 0.0.0",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log_settings 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "polonius-engine 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "polonius-engine 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_apfloat 0.0.0",
  "rustc_data_structures 0.0.0",
@@ -3374,6 +3374,7 @@ dependencies = [
  "arena 0.0.0",
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_data_structures 0.0.0",
+ "rustc_macros 0.1.0",
  "scoped-tls 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialize 0.0.0",
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4150,7 +4151,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum phf_generator 0.7.22 (registry+https://github.com/rust-lang/crates.io-index)" = "05a079dd052e7b674d21cb31cbb6c05efd56a2cd2827db7692e2f1a507ebd998"
 "checksum phf_shared 0.7.22 (registry+https://github.com/rust-lang/crates.io-index)" = "c2261d544c2bb6aa3b10022b0be371b9c7c64f762ef28c6f5d4f1ef6d97b5930"
 "checksum pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
-"checksum polonius-engine 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2490c396085801abf88df91758bad806b0890354f0875d624e62ecf0579a8145"
+"checksum polonius-engine 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8b24942fee141ea45628484a453762bb7e515099c3ec05fbeb76b7bf57b1aeed"
 "checksum precomputed-hash 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 "checksum pretty_assertions 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3a029430f0d744bc3d15dd474d591bed2402b645d024583082b9f63bb936dac6"
 "checksum pretty_env_logger 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "df8b3f4e0475def7d9c2e5de8e5a1306949849761e107b360d03e98eafaffd61"

diff --git a/src/bootstrap/bin/rustc.rs b/src/bootstrap/bin/rustc.rs
@@ -187,33 +187,6 @@ fn main() {
             cmd.arg("-C").arg(format!("debug-assertions={}", debug_assertions));
         }
 
-        // Build all crates in the `std` facade with `-Z emit-stack-sizes` to add stack usage
-        // information.
-        //
-        // When you use this `-Z` flag with Cargo you get stack usage information on all crates
-        // compiled from source, and when you are using LTO you also get information on pre-compiled
-        // crates like `core` and `std`, even if they were not compiled with `-Z emit-stack-sizes`.
-        // However, there's an exception: `compiler_builtins`. This crate is special and doesn't
-        // participate in LTO because it's always linked as a separate object file. For this reason
-        // it's impossible to get stack usage information about `compiler-builtins` using
-        // `RUSTFLAGS` + Cargo, or `cargo rustc`.
-        //
-        // To make the stack usage information of all crates under the `std` facade available to
-        // Cargo based stack usage analysis tools, in both LTO and non-LTO mode, we compile them
-        // with the `-Z emit-stack-sizes` flag. The `RUSTC_EMIT_STACK_SIZES` var helps us apply this
-        // flag only to the crates in the `std` facade. The `-Z` flag is known to currently work
-        // with targets that produce ELF files so we limit its use flag to those targets.
-        //
-        // NOTE(japaric) if this ever causes problem with an LLVM upgrade or any PR feel free to
-        // remove it or comment it out
-        if env::var_os("RUSTC_EMIT_STACK_SIZES").is_some()
-            && (target.contains("-linux-")
-                || target.contains("-none-eabi")
-                || target.ends_with("-none-elf"))
-        {
-            cmd.arg("-Zemit-stack-sizes");
-        }
-
         if let Ok(s) = env::var("RUSTC_CODEGEN_UNITS") {
             cmd.arg("-C").arg(format!("codegen-units={}", s));
         }

diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
@@ -97,8 +97,6 @@ impl Step for Std {
         let _folder = builder.fold_output(|| format!("stage{}-std", compiler.stage));
         builder.info(&format!("Building stage{} std artifacts ({} -> {})", compiler.stage,
                 &compiler.host, target));
-        // compile with `-Z emit-stack-sizes`; see bootstrap/src/rustc.rs for more details
-        cargo.env("RUSTC_EMIT_STACK_SIZES", "1");
         run_cargo(builder,
                   &mut cargo,
                   &libstd_stamp(builder, compiler, target),
@@ -397,8 +395,6 @@ impl Step for Test {
         let _folder = builder.fold_output(|| format!("stage{}-test", compiler.stage));
         builder.info(&format!("Building stage{} test artifacts ({} -> {})", compiler.stage,
                 &compiler.host, target));
-        // compile with `-Z emit-stack-sizes`; see bootstrap/src/rustc.rs for more details
-        cargo.env("RUSTC_EMIT_STACK_SIZES", "1");
         run_cargo(builder,
                   &mut cargo,
                   &libtest_stamp(builder, compiler, target),

diff --git a/src/doc/robots.txt b/src/doc/robots.txt
@@ -17,3 +17,11 @@ Disallow: /1.0.0-beta.2/
 Disallow: /1.0.0-beta.3/
 Disallow: /1.0.0-beta.4/
 Disallow: /1.0.0-beta.5/
+Disallow: /book/first-edition/
+Disallow: /book/second-edition/
+Disallow: /stable/book/first-edition/
+Disallow: /stable/book/second-edition/
+Disallow: /beta/book/first-edition/
+Disallow: /beta/book/second-edition/
+Disallow: /nightly/book/first-edition/
+Disallow: /nightly/book/second-edition/
diff --git a/src/doc/unstable-book/book.toml b/src/doc/unstable-book/book.toml
@@ -1,2 +1,3 @@
 [book]
 title = "The Rust Unstable Book"
+author = "The Rust Community"
diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
@@ -51,10 +51,7 @@
 //! default global allocator. It is not compatible with the libc allocator API.
 
 #![allow(unused_attributes)]
-#![unstable(feature = "alloc",
-            reason = "this library is unlikely to be stabilized in its current \
-                      form or name",
-            issue = "27783")]
+#![stable(feature = "alloc", since = "1.36.0")]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/",
        issue_tracker_base_url = "https://github.com/rust-lang/rust/issues/",
        test(no_crate_inject, attr(allow(unused_variables), deny(warnings))))]

diff --git a/src/liballoc/prelude/mod.rs b/src/liballoc/prelude/mod.rs
@@ -5,7 +5,6 @@
 //!
 //! ```
 //! # #![allow(unused_imports)]
-//! # #![feature(alloc)]
 //! #![feature(alloc_prelude)]
 //! extern crate alloc;
 //! use alloc::prelude::v1::*;

diff --git a/src/liballoc/raw_vec.rs b/src/liballoc/raw_vec.rs
@@ -256,7 +256,7 @@ impl<T, A: Alloc> RawVec<T, A> {
     /// # Examples
     ///
     /// ```
-    /// # #![feature(alloc, raw_vec_internals)]
+    /// # #![feature(raw_vec_internals)]
     /// # extern crate alloc;
     /// # use std::ptr;
     /// # use alloc::raw_vec::RawVec;
@@ -460,7 +460,7 @@ impl<T, A: Alloc> RawVec<T, A> {
     /// # Examples
     ///
     /// ```
-    /// # #![feature(alloc, raw_vec_internals)]
+    /// # #![feature(raw_vec_internals)]
     /// # extern crate alloc;
     /// # use std::ptr;
     /// # use alloc::raw_vec::RawVec;

diff --git a/src/libarena/lib.rs b/src/libarena/lib.rs
@@ -14,7 +14,6 @@
 #![deny(rust_2018_idioms)]
 #![cfg_attr(not(stage0), deny(internal))]
 
-#![feature(alloc)]
 #![feature(core_intrinsics)]
 #![feature(dropck_eyepatch)]
 #![feature(raw_vec_internals)]

diff --git a/src/libcore/mem.rs b/src/libcore/mem.rs
@@ -1152,15 +1152,6 @@ impl<T> MaybeUninit<T> {
         MaybeUninit { uninit: () }
     }
 
-    /// Deprecated before stabilization.
-    #[unstable(feature = "maybe_uninit", issue = "53491")]
-    #[inline(always)]
-    // FIXME: still used by stdsimd
-    // #[rustc_deprecated(since = "1.35.0", reason = "use `uninit` instead")]
-    pub const fn uninitialized() -> MaybeUninit<T> {
-        Self::uninit()
-    }
-
     /// Creates a new `MaybeUninit<T>` in an uninitialized state, with the memory being
     /// filled with `0` bytes. It depends on `T` whether that already makes for
     /// proper initialization. For example, `MaybeUninit<usize>::zeroed()` is initialized,
@@ -1221,14 +1212,6 @@ impl<T> MaybeUninit<T> {
         }
     }
 
-    /// Deprecated before stabilization.
-    #[unstable(feature = "maybe_uninit", issue = "53491")]
-    #[inline(always)]
-    #[rustc_deprecated(since = "1.35.0", reason = "use `write` instead")]
-    pub fn set(&mut self, val: T) -> &mut T {
-        self.write(val)
-    }
-
     /// Gets a pointer to the contained value. Reading from this pointer or turning it
     /// into a reference is undefined behavior unless the `MaybeUninit<T>` is initialized.
     ///
@@ -1346,15 +1329,6 @@ impl<T> MaybeUninit<T> {
         ManuallyDrop::into_inner(self.value)
     }
 
-    /// Deprecated before stabilization.
-    #[unstable(feature = "maybe_uninit", issue = "53491")]
-    #[inline(always)]
-    // FIXME: still used by stdsimd
-    // #[rustc_deprecated(since = "1.35.0", reason = "use `assume_init` instead")]
-    pub unsafe fn into_initialized(self) -> T {
-        self.assume_init()
-    }
-
     /// Reads the value from the `MaybeUninit<T>` container. The resulting `T` is subject
     /// to the usual drop handling.
     ///
@@ -1417,14 +1391,6 @@ impl<T> MaybeUninit<T> {
         self.as_ptr().read()
     }
 
-    /// Deprecated before stabilization.
-    #[unstable(feature = "maybe_uninit", issue = "53491")]
-    #[inline(always)]
-    #[rustc_deprecated(since = "1.35.0", reason = "use `read` instead")]
-    pub unsafe fn read_initialized(&self) -> T {
-        self.read()
-    }
-
     /// Gets a reference to the contained value.
     ///
     /// # Safety

diff --git a/src/libcore/str/mod.rs b/src/libcore/str/mod.rs
@@ -2712,7 +2712,7 @@ impl str {
     /// All kinds of ASCII whitespace are considered:
     ///
     /// ```
-    /// let mut iter = " Mary   had\ta little  \n\t lamb".split_whitespace();
+    /// let mut iter = " Mary   had\ta little  \n\t lamb".split_ascii_whitespace();
     /// assert_eq!(Some("Mary"), iter.next());
     /// assert_eq!(Some("had"), iter.next());
     /// assert_eq!(Some("a"), iter.next());

diff --git a/src/libpanic_unwind/lib.rs b/src/libpanic_unwind/lib.rs
@@ -19,8 +19,6 @@
 
 #![deny(rust_2018_idioms)]
 
-#![feature(allocator_api)]
-#![feature(alloc)]
 #![feature(core_intrinsics)]
 #![feature(lang_items)]
 #![feature(libc)]

diff --git a/src/librustc/Cargo.toml b/src/librustc/Cargo.toml
@@ -19,7 +19,7 @@ lazy_static = "1.0.0"
 num_cpus = "1.0"
 scoped-tls = "1.0"
 log = { version = "0.4", features = ["release_max_level_info", "std"] }
-polonius-engine = "0.6.2"
+polonius-engine = "0.7.0"
 rustc-rayon = "0.1.2"
 rustc-rayon-core = "0.1.2"
 rustc_apfloat = { path = "../librustc_apfloat" }

diff --git a/src/librustc/infer/error_reporting/mod.rs b/src/librustc/infer/error_reporting/mod.rs
@@ -278,7 +278,7 @@ impl<'a, 'gcx, 'tcx> TyCtxt<'a, 'gcx, 'tcx> {
     }
 
     fn explain_span(self, heading: &str, span: Span) -> (String, Option<Span>) {
-        let lo = self.sess.source_map().lookup_char_pos_adj(span.lo());
+        let lo = self.sess.source_map().lookup_char_pos(span.lo());
         (
             format!("the {} at {}:{}", heading, lo.line, lo.col.to_usize() + 1),
             Some(span),

diff --git a/src/librustc/lint/builtin.rs b/src/librustc/lint/builtin.rs
@@ -352,12 +352,6 @@ declare_lint! {
     "outlives requirements can be inferred"
 }
 
-declare_lint! {
-    pub DUPLICATE_MATCHER_BINDING_NAME,
-    Deny,
-    "duplicate macro matcher binding name"
-}
-
 /// Some lints that are buffered from `libsyntax`. See `syntax::early_buffered_lints`.
 pub mod parser {
     declare_lint! {
@@ -462,7 +456,6 @@ declare_lint_pass! {
         DEPRECATED_IN_FUTURE,
         AMBIGUOUS_ASSOCIATED_ITEMS,
         NESTED_IMPL_TRAIT,
-        DUPLICATE_MATCHER_BINDING_NAME,
         MUTABLE_BORROW_RESERVATION_CONFLICT,
     ]
 }

diff --git a/src/librustc/lint/mod.rs b/src/librustc/lint/mod.rs
@@ -26,7 +26,7 @@ use rustc_data_structures::sync::{self, Lrc};
 use crate::hir::def_id::{CrateNum, LOCAL_CRATE};
 use crate::hir::intravisit;
 use crate::hir;
-use crate::lint::builtin::{BuiltinLintDiagnostics, DUPLICATE_MATCHER_BINDING_NAME};
+use crate::lint::builtin::BuiltinLintDiagnostics;
 use crate::lint::builtin::parser::{QUESTION_MARK_MACRO_SEP, ILL_FORMED_ATTRIBUTE_INPUT};
 use crate::session::{Session, DiagnosticMessageId};
 use crate::ty::TyCtxt;
@@ -82,7 +82,6 @@ impl Lint {
         match lint_id {
             BufferedEarlyLintId::QuestionMarkMacroSep => QUESTION_MARK_MACRO_SEP,
             BufferedEarlyLintId::IllFormedAttributeInput => ILL_FORMED_ATTRIBUTE_INPUT,
-            BufferedEarlyLintId::DuplicateMacroMatcherBindingName => DUPLICATE_MATCHER_BINDING_NAME,
         }
     }
 

diff --git a/src/librustc/middle/lib_features.rs b/src/librustc/middle/lib_features.rs
@@ -8,7 +8,7 @@ use crate::ty::TyCtxt;
 use crate::hir::intravisit::{self, NestedVisitorMap, Visitor};
 use syntax::symbol::Symbol;
 use syntax::ast::{Attribute, MetaItem, MetaItemKind};
-use syntax_pos::Span;
+use syntax_pos::{Span, symbols};
 use rustc_data_structures::fx::{FxHashSet, FxHashMap};
 use rustc_macros::HashStable;
 use errors::DiagnosticId;
@@ -51,12 +51,12 @@ impl<'a, 'tcx> LibFeatureCollector<'a, 'tcx> {
     }
 
     fn extract(&self, attr: &Attribute) -> Option<(Symbol, Option<Symbol>, Span)> {
-        let stab_attrs = vec!["stable", "unstable", "rustc_const_unstable"];
+        let stab_attrs = [symbols::stable, symbols::unstable, symbols::rustc_const_unstable];
 
         // Find a stability attribute (i.e., `#[stable (..)]`, `#[unstable (..)]`,
         // `#[rustc_const_unstable (..)]`).
         if let Some(stab_attr) = stab_attrs.iter().find(|stab_attr| {
-            attr.check_name(stab_attr)
+            attr.check_name(**stab_attr)
         }) {
             let meta_item = attr.meta();
             if let Some(MetaItem { node: MetaItemKind::List(ref metas), .. }) = meta_item {

diff --git a/src/librustc/mir/interpret/error.rs b/src/librustc/mir/interpret/error.rs
@@ -65,8 +65,8 @@ impl<'tcx> fmt::Display for FrameInfo<'tcx> {
                 write!(f, "inside call to `{}`", self.instance)?;
             }
             if !self.call_site.is_dummy() {
-                let lo = tcx.sess.source_map().lookup_char_pos_adj(self.call_site.lo());
-                write!(f, " at {}:{}:{}", lo.filename, lo.line, lo.col.to_usize() + 1)?;
+                let lo = tcx.sess.source_map().lookup_char_pos(self.call_site.lo());
+                write!(f, " at {}:{}:{}", lo.file.name, lo.line, lo.col.to_usize() + 1)?;
             }
             Ok(())
         })

diff --git a/src/librustc/session/code_stats.rs b/src/librustc/session/code_stats.rs
@@ -57,7 +57,13 @@ impl CodeStats {
                                          overall_size: Size,
                                          packed: bool,
                                          opt_discr_size: Option<Size>,
-                                         variants: Vec<VariantInfo>) {
+                                         mut variants: Vec<VariantInfo>) {
+        // Sort variants so the largest ones are shown first. A stable sort is
+        // used here so that source code order is preserved for all variants
+        // that have the same size.
+        variants.sort_by(|info1, info2| {
+            info2.size.cmp(&info1.size)
+        });
         let info = TypeSizeInfo {
             kind,
             type_description: type_desc.to_string(),