---

yaml
---
r: 273487
b: refs/heads/beta
c: 7f2612e
h: refs/heads/master
i:
  273485: 8c9a652
  273483: 574ba2d
  273479: 657cd3b
  273471: 9f6f705

Author: eddyb

[refs]

@@ -23,7 +23,7 @@ refs/tags/0.9: 36870b185fc5f5486636d4515f0e22677493f225
 refs/tags/0.10: ac33f2b15782272ae348dbd7b14b8257b2148b5a
 refs/tags/0.11.0: e1247cb1d0d681be034adb4b558b5a0c0d5720f9
 refs/tags/0.12.0: f0c419429ef30723ceaf6b42f9b5a2aeb5d2e2d1
-refs/heads/beta: 7d626e9f55f0503a5e0324a4172f80d3281d6ae0
+refs/heads/beta: 7f2612e66ce8dd77329fa0983a3a01bcac129368
 refs/tags/1.0.0-alpha: e42bd6d93a1d3433c486200587f8f9e12590a4d7
 refs/heads/tmp: e06d2ad9fcd5027bcaac5b08fc9aa39a49d0ecd3
 refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f

branches/beta/README.md

@@ -77,7 +77,7 @@ build.
 
 Download [MinGW from
 here](http://mingw-w64.org/doku.php/download/mingw-builds), and choose the
-`threads=win32,exceptions=dwarf/seh` flavor when installing. Also, make sure to install to a path without spaces in it. After installing,
+`version=4.9.x,threads=win32,exceptions=dwarf/seh` flavor when installing. Also, make sure to install to a path without spaces in it. After installing,
 add its `bin` directory to your `PATH`. This is due to [#28260](https://github.com/rust-lang/rust/issues/28260), in the future,
 installing from pacman should be just fine.
 

branches/beta/RELEASES.md

@@ -116,8 +116,8 @@ Compatibility Notes
   that were not intended. In this release, [defaulted type parameters
   appearing outside of type definitions will generate a
   warning][1.7d], which will become an error in future releases.
-* [Parsing "." as a float results in an error instead of
-  0][1.7p]. That is, `".".parse::<f32>()` returns `Err`, not `Ok(0)`.
+* [Parsing "." as a float results in an error instead of 0][1.7p].
+  That is, `".".parse::<f32>()` returns `Err`, not `Ok(0.0)`.
 * [Borrows of closure parameters may not outlive the closure][1.7bc].
 
 [1.7a]: https://github.com/rust-lang/rust/pull/30928

branches/beta/configure

@@ -1034,7 +1034,7 @@ then
         if [ -n "$CFG_OSX_CLANG_VERSION" ]
         then
             case $CFG_OSX_CLANG_VERSION in
-                (7.0* | 7.1* | 7.2*)
+                (7.0* | 7.1* | 7.2* | 7.3*)
                 step_msg "found ok version of APPLE CLANG: $CFG_OSX_CLANG_VERSION"
                 ;;
                 (*)

branches/beta/mk/cfg/i586-unknown-linux-gnu.mk

@@ -7,9 +7,9 @@ CFG_LIB_NAME_i586-unknown-linux-gnu=lib$(1).so
 CFG_STATIC_LIB_NAME_i586-unknown-linux-gnu=lib$(1).a
 CFG_LIB_GLOB_i586-unknown-linux-gnu=lib$(1)-*.so
 CFG_LIB_DSYM_GLOB_i586-unknown-linux-gnu=lib$(1)-*.dylib.dSYM
-CFG_JEMALLOC_CFLAGS_i586-unknown-linux-gnu := -m32 $(CFLAGS)
-CFG_GCCISH_CFLAGS_i586-unknown-linux-gnu := -Wall -Werror -g -fPIC -m32 $(CFLAGS)
-CFG_GCCISH_CXXFLAGS_i586-unknown-linux-gnu := -fno-rtti $(CXXFLAGS)
+CFG_JEMALLOC_CFLAGS_i586-unknown-linux-gnu := -m32 $(CFLAGS) -march=pentium
+CFG_GCCISH_CFLAGS_i586-unknown-linux-gnu := -Wall -Werror -g -fPIC -m32 $(CFLAGS) -march=pentium
+CFG_GCCISH_CXXFLAGS_i586-unknown-linux-gnu := -fno-rtti $(CXXFLAGS) -march=pentium
 CFG_GCCISH_LINK_FLAGS_i586-unknown-linux-gnu := -shared -fPIC -ldl -pthread  -lrt -g -m32
 CFG_GCCISH_DEF_FLAG_i586-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
 CFG_LLC_FLAGS_i586-unknown-linux-gnu :=

branches/beta/mk/crates.mk

@@ -97,7 +97,7 @@ DEPS_rustc := syntax fmt_macros flate arena serialize getopts rbml rustc_front\
               log graphviz rustc_llvm rustc_back rustc_data_structures\
 		  	  rustc_const_eval
 DEPS_rustc_back := std syntax rustc_llvm rustc_front flate log libc
-DEPS_rustc_borrowck := rustc rustc_front log graphviz syntax
+DEPS_rustc_borrowck := rustc rustc_front rustc_mir log graphviz syntax
 DEPS_rustc_data_structures := std log serialize
 DEPS_rustc_driver := arena flate getopts graphviz libc rustc rustc_back rustc_borrowck \
                      rustc_typeck rustc_mir rustc_resolve log syntax serialize rustc_llvm \

branches/beta/src/bootstrap/build/check.rs

@@ -16,3 +16,11 @@ pub fn linkcheck(build: &Build, stage: u32, host: &str) {
     build.run(build.tool_cmd(&compiler, "linkchecker")
                    .arg(build.out.join(host).join("doc")));
 }
+
+pub fn cargotest(build: &Build, stage: u32, host: &str) {
+    let ref compiler = Compiler::new(stage, host);
+    build.run(build.tool_cmd(compiler, "cargotest")
+              .env("RUSTC", build.compiler_path(compiler))
+              .env("RUSTDOC", build.rustdoc(compiler))
+              .arg(&build.cargo));
+}

branches/beta/src/bootstrap/build/mod.rs

@@ -183,6 +183,9 @@ impl Build {
                     compile::tool(self, stage, target.target,
                                   "error_index_generator");
                 }
+                ToolCargoTest { stage } => {
+                    compile::tool(self, stage, target.target, "cargotest");
+                }
                 DocBook { stage } => {
                     doc::rustbook(self, stage, target.target, "book", &doc_out);
                 }
@@ -210,6 +213,9 @@ impl Build {
                 CheckLinkcheck { stage } => {
                     check::linkcheck(self, stage, target.target);
                 }
+                CheckCargoTest { stage } => {
+                    check::cargotest(self, stage, target.target);
+                }
 
                 DistDocs { stage } => dist::docs(self, stage, target.target),
                 DistMingw { _dummy } => dist::mingw(self, target.target),

branches/beta/src/bootstrap/build/native.rs

@@ -39,7 +39,12 @@ pub fn llvm(build: &Build, target: &str) {
 
     let _ = fs::remove_dir_all(&dst.join("build"));
     t!(fs::create_dir_all(&dst.join("build")));
-    let assertions = if build.config.llvm_assertions {"ON"} else {"OFF"};
+    let mut assertions = if build.config.llvm_assertions {"ON"} else {"OFF"};
+
+    // Disable LLVM assertions on ARM compilers until #32360 is fixed
+    if target.contains("arm") && target.contains("gnu") {
+        assertions = "OFF";
+    }
 
     // http://llvm.org/docs/CMake.html
     let mut cfg = cmake::Config::new(build.src.join("src/llvm"));
@@ -114,7 +119,8 @@ pub fn compiler_rt(build: &Build, target: &str) {
     let arch = target.split('-').next().unwrap();
     let mode = if build.config.rust_optimize {"Release"} else {"Debug"};
     let (dir, build_target, libname) = if target.contains("linux") ||
-                                          target.contains("freebsd") {
+                                          target.contains("freebsd") ||
+                                          target.contains("netbsd") {
         let os = if target.contains("android") {"-android"} else {""};
         let arch = if arch.starts_with("arm") && target.contains("eabihf") {
             "armhf"

branches/beta/src/bootstrap/build/step.rs

@@ -47,6 +47,7 @@ macro_rules! targets {
             (tool_linkchecker, ToolLinkchecker { stage: u32 }),
             (tool_rustbook, ToolRustbook { stage: u32 }),
             (tool_error_index, ToolErrorIndex { stage: u32 }),
+            (tool_cargotest, ToolCargoTest { stage: u32 }),
 
             // Steps for long-running native builds. Ideally these wouldn't
             // actually exist and would be part of build scripts, but for now
@@ -73,6 +74,7 @@ macro_rules! targets {
             // target to depend on a bunch of others.
             (check, Check { stage: u32, compiler: Compiler<'a> }),
             (check_linkcheck, CheckLinkcheck { stage: u32 }),
+            (check_cargotest, CheckCargoTest { stage: u32 }),
 
             // Distribution targets, creating tarballs
             (dist, Dist { stage: u32 }),
@@ -292,6 +294,9 @@ impl<'a> Step<'a> {
             Source::CheckLinkcheck { stage } => {
                 vec![self.tool_linkchecker(stage), self.doc(stage)]
             }
+            Source::CheckCargoTest { stage } => {
+                vec![self.tool_cargotest(stage)]
+            }
 
             Source::ToolLinkchecker { stage } => {
                 vec![self.libstd(self.compiler(stage))]
@@ -300,6 +305,9 @@ impl<'a> Step<'a> {
             Source::ToolRustbook { stage } => {
                 vec![self.librustc(self.compiler(stage))]
             }
+            Source::ToolCargoTest { stage } => {
+                vec![self.libstd(self.compiler(stage))]
+            }
 
             Source::DistDocs { stage } => vec![self.doc(stage)],
             Source::DistMingw { _dummy: _ } => Vec::new(),

branches/beta/src/bootstrap/mk/Makefile.in

@@ -38,6 +38,8 @@ standalone-docs:
 	$(Q)$(BOOTSTRAP) --step doc-standalone
 check:
 	$(Q)$(BOOTSTRAP) --step check
+cargotest:
+	$(Q)$(BOOTSTRAP) --step cargotest
 dist:
 	$(Q)$(BOOTSTRAP) --step dist
 

branches/beta/src/compiletest/errors.rs

@@ -9,14 +9,54 @@
 // except according to those terms.
 use self::WhichLine::*;
 
+use std::fmt;
 use std::fs::File;
 use std::io::BufReader;
 use std::io::prelude::*;
 use std::path::Path;
+use std::str::FromStr;
+
+#[derive(Clone, Debug, PartialEq)]
+pub enum ErrorKind {
+    Help,
+    Error,
+    Note,
+    Suggestion,
+    Warning,
+}
+
+impl FromStr for ErrorKind {
+    type Err = ();
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match &s.trim_right_matches(':') as &str {
+            "HELP" => Ok(ErrorKind::Help),
+            "ERROR" => Ok(ErrorKind::Error),
+            "NOTE" => Ok(ErrorKind::Note),
+            "SUGGESTION" => Ok(ErrorKind::Suggestion),
+            "WARN" => Ok(ErrorKind::Warning),
+            "WARNING" => Ok(ErrorKind::Warning),
+            _ => Err(()),
+        }
+    }
+}
+
+impl fmt::Display for ErrorKind {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            ErrorKind::Help => write!(f, "help"),
+            ErrorKind::Error => write!(f, "error"),
+            ErrorKind::Note => write!(f, "note"),
+            ErrorKind::Suggestion => write!(f, "suggestion"),
+            ErrorKind::Warning => write!(f, "warning"),
+        }
+    }
+}
 
 pub struct ExpectedError {
     pub line_num: usize,
-    pub kind: String,
+    /// What kind of message we expect (e.g. warning, error, suggestion).
+    /// `None` if not specified or unknown message kind.
+    pub kind: Option<ErrorKind>,
     pub msg: String,
 }
 
@@ -81,11 +121,11 @@ fn parse_expected(last_nonfollow_error: Option<usize>,
         (false, line[start + tag.len()..].chars().take_while(|c| *c == '^').count())
     };
     let kind_start = start + tag.len() + adjusts + (follow as usize);
-    let letters = line[kind_start..].chars();
-    let kind = letters.skip_while(|c| c.is_whitespace())
-                      .take_while(|c| !c.is_whitespace())
-                      .flat_map(|c| c.to_lowercase())
-                      .collect::<String>();
+    let kind = line[kind_start..].split_whitespace()
+                                 .next()
+                                 .expect("Encountered unexpected empty comment")
+                                 .parse::<ErrorKind>()
+                                 .ok();
     let letters = line[kind_start..].chars();
     let msg = letters.skip_while(|c| c.is_whitespace())
                      .skip_while(|c| !c.is_whitespace())

branches/beta/src/compiletest/runtest.rs

@@ -11,7 +11,7 @@
 use common::Config;
 use common::{CompileFail, ParseFail, Pretty, RunFail, RunPass, RunPassValgrind};
 use common::{Codegen, DebugInfoLldb, DebugInfoGdb, Rustdoc, CodegenUnits};
-use errors;
+use errors::{self, ErrorKind};
 use header::TestProps;
 use header;
 use procsrv;
@@ -1025,12 +1025,16 @@ fn check_expected_errors(revision: Option<&str>,
         expected.replace(r"\", "/")
     }).collect::<Vec<String>>();
 
+    // If the testcase being checked contains at least one expected "help"
+    // message, then we'll ensure that all "help" messages are expected.
+    // Otherwise, all "help" messages reported by the compiler will be ignored.
+    // This logic also applies to "note" messages.
     let (expect_help, expect_note) =
         expected_errors.iter()
                         .fold((false, false),
                               |(acc_help, acc_note), ee|
-                                  (acc_help || ee.kind == "help:" || ee.kind == "help",
-                                   acc_note || ee.kind == "note:" || ee.kind == "note"));
+                                  (acc_help || ee.kind == Some(ErrorKind::Help),
+                                   acc_note || ee.kind == Some(ErrorKind::Note)));
 
     // Scan and extract our error/warning messages,
     // which look like:
@@ -1048,15 +1052,15 @@ fn check_expected_errors(revision: Option<&str>,
         let mut prev = 0;
         for (i, ee) in expected_errors.iter().enumerate() {
             if !found_flags[i] {
-                debug!("prefix={} ee.kind={} ee.msg={} line={}",
+                debug!("prefix={} ee.kind={:?} ee.msg={} line={}",
                        prefixes[i],
                        ee.kind,
                        ee.msg,
                        line);
                 // Suggestions have no line number in their output, so take on the line number of
                 // the previous expected error
-                if ee.kind == "suggestion" {
-                    assert!(expected_errors[prev].kind == "help",
+                if ee.kind == Some(ErrorKind::Suggestion) {
+                    assert!(expected_errors[prev].kind == Some(ErrorKind::Help),
                             "SUGGESTIONs must be preceded by a HELP");
                     if line.contains(&ee.msg) {
                         found_flags[i] = true;
@@ -1066,7 +1070,7 @@ fn check_expected_errors(revision: Option<&str>,
                 }
                 if
                     (prefix_matches(line, &prefixes[i]) || continuation(line)) &&
-                    line.contains(&ee.kind) &&
+                    (ee.kind.is_none() || line.contains(&ee.kind.as_ref().unwrap().to_string())) &&
                     line.contains(&ee.msg)
                 {
                     found_flags[i] = true;
@@ -1092,7 +1096,10 @@ fn check_expected_errors(revision: Option<&str>,
         if !flag {
             let ee = &expected_errors[i];
             error(revision, &format!("expected {} on line {} not found: {}",
-                                     ee.kind, ee.line_num, ee.msg));
+                                     ee.kind.as_ref()
+                                            .map_or("message".into(),
+                                                    |k| k.to_string()),
+                                     ee.line_num, ee.msg));
             not_found += 1;
         }
     }

branches/beta/src/doc/book/error-handling.md

@@ -2019,6 +2019,16 @@ impl Error for CliError {
             CliError::NotFound => "not found",
         }
     }
+
+    fn cause(&self) -> Option<&error::Error> {
+        match *self {            
+            CliError::Io(ref err) => Some(err),
+            CliError::Parse(ref err) => Some(err),
+            // Our custom error doesn't have an underlying cause, but we could
+            // modify it so that it does.
+            CliError::NotFound() => None,
+        }
+    }
 }
 ```
 

branches/beta/src/doc/book/getting-started.md

@@ -93,8 +93,8 @@ unofficial locations.
 | `armv7-apple-ios`             |  ✓  |     |     | ARM iOS                    |
 | `armv7s-apple-ios`            |  ✓  |     |     | ARM iOS                    |
 | `aarch64-apple-ios`           |  ✓  |     |     | ARM64 iOS                  |
-| `i686-unknown-freebsd`        |  ✓  |  ✓  |     | 32-bit FreeBSD             |
-| `x86_64-unknown-freebsd`      |  ✓  |  ✓  |     | 64-bit FreeBSD             |
+| `i686-unknown-freebsd`        |  ✓  |  ✓  |  ✓  | 32-bit FreeBSD             |
+| `x86_64-unknown-freebsd`      |  ✓  |  ✓  |  ✓  | 64-bit FreeBSD             |
 | `x86_64-unknown-openbsd`      |  ✓  |  ✓  |     | 64-bit OpenBSD             |
 | `x86_64-unknown-netbsd`       |  ✓  |  ✓  |     | 64-bit NetBSD              |
 | `x86_64-unknown-bitrig`       |  ✓  |  ✓  |     | 64-bit Bitrig              |

branches/beta/src/doc/book/guessing-game.md

@@ -912,7 +912,7 @@ returned by `parse()`, this is an `enum`  like `Ordering`, but in this case,
 each variant has some data associated with it: `Ok` is a success, and `Err` is a
 failure. Each contains more information: the successfully parsed integer, or an
 error type. In this case, we `match` on `Ok(num)`, which sets the name `num` to
-the unwrapped `Ok` value (ythe integer), and then we  return it on the
+the unwrapped `Ok` value (the integer), and then we  return it on the
 right-hand side. In the `Err` case, we don’t care what kind of error it is, so
 we just use the catch all `_` instead of a name. This catches everything that
 isn't `Ok`, and `continue` lets us move to the next iteration of the loop; in

branches/beta/src/doc/book/lifetimes.md

@@ -282,14 +282,12 @@ to it.
 
 ## Lifetime Elision
 
-Rust supports powerful local type inference in function bodies, but it’s
-forbidden in item signatures to allow reasoning about the types based on
-the item signature alone. However, for ergonomic reasons a very restricted
-secondary inference algorithm called “lifetime elision” applies in function
-signatures. It infers only based on the signature components themselves and not
-based on the body of the function, only infers lifetime parameters, and does
-this with only three easily memorizable and unambiguous rules. This makes
-lifetime elision a shorthand for writing an item signature, while not hiding
+Rust supports powerful local type inference in the bodies of functions but not in their item signatures. 
+It's forbidden to allow reasoning about types based on the item signature alone. 
+However, for ergonomic reasons, a very restricted secondary inference algorithm called 
+“lifetime elision” does apply when judging lifetimes. Lifetime elision is concerned solely to infer 
+lifetime parameters using three easily memorizable and unambiguous rules. This means lifetime elision 
+acts as a shorthand for writing an item signature, while not hiding
 away the actual types involved as full local inference would if applied to it.
 
 When talking about lifetime elision, we use the term *input lifetime* and

branches/beta/src/doc/book/match.md

@@ -36,10 +36,10 @@ give us an error:
 error: non-exhaustive patterns: `_` not covered
 ```
 
-Rust is telling us that we forgot a value. The compiler infers from `x` that it
-can have any positive 32bit value; for example 1 to 2,147,483,647. The `_` acts 
+Rust is telling us that we forgot some value. The compiler infers from `x` that it
+can have any 32bit integer value; for example -2,147,483,648 to 2,147,483,647. The `_` acts 
 as a 'catch-all', and will catch all possible values that *aren't* specified in 
-an arm of `match`. As you can see with the previous example, we provide `match` 
+an arm of `match`. As you can see in the previous example, we provide `match` 
 arms for integers 1-5, if `x` is 6 or any other value, then it is caught by `_`.
 
 `match` is also an expression, which means we can use it on the right-hand

branches/beta/src/doc/book/primitive-types.md

@@ -7,7 +7,7 @@ of these ones, as well, but these are the most primitive.
 
 # Booleans
 
-Rust has a built in boolean type, named `bool`. It has two values, `true` and `false`:
+Rust has a built-in boolean type, named `bool`. It has two values, `true` and `false`:
 
 ```rust
 let x = true;
@@ -89,13 +89,13 @@ Unsigned types use a `u` for their category, and signed types use `i`. The `i`
 is for ‘integer’. So `u8` is an eight-bit unsigned number, and `i8` is an
 eight-bit signed number.
 
-## Fixed size types
+## Fixed-size types
 
-Fixed size types have a specific number of bits in their representation. Valid
+Fixed-size types have a specific number of bits in their representation. Valid
 bit sizes are `8`, `16`, `32`, and `64`. So, `u32` is an unsigned, 32-bit integer,
 and `i64` is a signed, 64-bit integer.
 
-## Variable sized types
+## Variable-size types
 
 Rust also provides types whose size depends on the size of a pointer of the
 underlying machine. These types have ‘size’ as the category, and come in signed