---

yaml
---
r: 181629
b: refs/heads/snap-stage3
c: 754db0f
h: refs/heads/master
i:
  181627: 199c20f
v: v3

Author: alexcrichton

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 6c065fc8cb036785f61ff03e05c1563cbb2dd081
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: 9bb3b3772d4be69b0f619bd9456255a9e3bc7d9e
+refs/heads/snap-stage3: 754db0f7ac35edcddeb3e6a27969a7c3a380f936
 refs/heads/try: ccf8fedf1cffcb8f6f3581d53d220039e192fe77
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d

branches/snap-stage3/README.md

@@ -1,14 +1,16 @@
 # The Rust Programming Language
 
 This is a compiler for Rust, including standard libraries, tools and
-documentation.
+documentation. Rust is a systems programming language that is fast,
+memory safe and multithreaded, but does not employ a garbage collector
+or otherwise impose significant runtime overhead.
 
 ## Quick Start
 
-Read ["Installing Rust"][install] from [The Book][trpl].
+Read ["Installing Rust"] from [The Book].
 
-[install]: http://doc.rust-lang.org/book/installing-rust.html
-[trpl]: http://doc.rust-lang.org/book/index.html
+["Installing Rust"]: http://doc.rust-lang.org/book/installing-rust.html
+[The Book]: http://doc.rust-lang.org/book/index.html
 
 ## Building from Source
 
@@ -19,22 +21,14 @@ Read ["Installing Rust"][install] from [The Book][trpl].
     * `curl`
     * `git`
 
-2. Download and build Rust:
-
-    You can either download a [tarball] or build directly from the [repo].
-
-    To build from the [tarball] do:
-
-        $ curl -O https://static.rust-lang.org/dist/rustc-nightly-src.tar.gz
-        $ tar -xzf rustc-nightly-src.tar.gz
-        $ cd rustc-nightly
-
-    Or to build from the [repo] do:
+2. Clone the [source] with `git`:
 
         $ git clone https://github.com/rust-lang/rust.git
         $ cd rust
 
-    Now that you have Rust's source code, you can configure and build it:
+[source]: https://github.com/rust-lang/rust
+
+3. Build and install:
 
         $ ./configure
         $ make && make install
@@ -46,7 +40,10 @@ Read ["Installing Rust"][install] from [The Book][trpl].
 
     When complete, `make install` will place several programs into
     `/usr/local/bin`: `rustc`, the Rust compiler, and `rustdoc`, the
-    API-documentation tool.
+    API-documentation tool. This install does not include [Cargo],
+    Rust's package manager, which you may also want to build.
+
+[Cargo]: https://github.com/rust-lang/cargo
 
 ### Building on Windows
 
@@ -72,9 +69,6 @@ $ pacman -S base-devel
         $ ./configure
         $ make && make install
 
-[repo]: https://github.com/rust-lang/rust
-[tarball]: https://static.rust-lang.org/dist/rustc-nightly-src.tar.gz
-
 ## Notes
 
 Since the Rust compiler is written in Rust, it must be built by a
@@ -94,9 +88,9 @@ supported build environments that are most likely to work.
 Rust currently needs about 1.5 GiB of RAM to build without swapping; if it hits
 swap, it will take a very long time to build.
 
-There is a lot more documentation in the [wiki].
+There is more advice about hacking on Rust in [CONTRIBUTING.md].
 
-[wiki]: https://github.com/rust-lang/rust/wiki
+[CONTRIBUTING.md]: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md
 
 ## Getting help
 
@@ -114,6 +108,14 @@ The Rust community congregates in a few places:
 
 To contribute to Rust, please see [CONTRIBUTING.md](CONTRIBUTING.md).
 
+Rust has an [IRC] culture and most real-time collaboration happens in a
+variety of channels on Mozilla's IRC network, irc.mozilla.org. The
+most popular channel is [#rust], a venue for general discussion about
+Rust, and a good place to ask for help,
+
+[IRC]: https://en.wikipedia.org/wiki/Internet_Relay_Chat
+[#rust]: irc://irc.mozilla.org/rust
+
 ## License
 
 Rust is primarily distributed under the terms of both the MIT license

branches/snap-stage3/configure

@@ -1056,6 +1056,7 @@ do
     make_dir $h/test/run-pass-fulldeps
     make_dir $h/test/run-fail
     make_dir $h/test/compile-fail
+    make_dir $h/test/parse-fail
     make_dir $h/test/compile-fail-fulldeps
     make_dir $h/test/bench
     make_dir $h/test/perf

branches/snap-stage3/mk/tests.mk

@@ -174,12 +174,12 @@ check-notidy: cleantmptestlogs cleantestlibs all check-stage2
 check-lite: cleantestlibs cleantmptestlogs \
 	$(foreach crate,$(TEST_TARGET_CRATES),check-stage2-$(crate)) \
 	check-stage2-rpass check-stage2-rpass-valgrind \
-	check-stage2-rfail check-stage2-cfail check-stage2-rmake
+	check-stage2-rfail check-stage2-cfail check-stage2-pfail check-stage2-rmake
 	$(Q)$(CFG_PYTHON) $(S)src/etc/check-summary.py tmp/*.log
 
 # Only check the 'reference' tests: rpass/cfail/rfail/rmake.
 check-ref: cleantestlibs cleantmptestlogs check-stage2-rpass check-stage2-rpass-valgrind \
-	check-stage2-rfail check-stage2-cfail check-stage2-rmake
+	check-stage2-rfail check-stage2-cfail check-stage2-pfail check-stage2-rmake
 	$(Q)$(CFG_PYTHON) $(S)src/etc/check-summary.py tmp/*.log
 
 # Only check the docs.
@@ -291,6 +291,7 @@ check-stage$(1)-T-$(2)-H-$(3)-exec: \
 	check-stage$(1)-T-$(2)-H-$(3)-rpass-exec \
 	check-stage$(1)-T-$(2)-H-$(3)-rfail-exec \
 	check-stage$(1)-T-$(2)-H-$(3)-cfail-exec \
+	check-stage$(1)-T-$(2)-H-$(3)-pfail-exec \
     check-stage$(1)-T-$(2)-H-$(3)-rpass-valgrind-exec \
     check-stage$(1)-T-$(2)-H-$(3)-rpass-full-exec \
 	check-stage$(1)-T-$(2)-H-$(3)-cfail-full-exec \
@@ -470,7 +471,8 @@ RPASS_VALGRIND_TESTS := $(RPASS_VALGRIND_RS)
 RPASS_FULL_TESTS := $(RPASS_FULL_RS)
 CFAIL_FULL_TESTS := $(CFAIL_FULL_RS)
 RFAIL_TESTS := $(RFAIL_RS)
-CFAIL_TESTS := $(CFAIL_RS) $(PFAIL_RS)
+CFAIL_TESTS := $(CFAIL_RS)
+PFAIL_TESTS := $(PFAIL_RS)
 BENCH_TESTS := $(BENCH_RS)
 PERF_TESTS := $(PERF_RS)
 PRETTY_TESTS := $(PRETTY_RS)
@@ -508,6 +510,11 @@ CTEST_BUILD_BASE_cfail = compile-fail
 CTEST_MODE_cfail = compile-fail
 CTEST_RUNTOOL_cfail = $(CTEST_RUNTOOL)
 
+CTEST_SRC_BASE_pfail = parse-fail
+CTEST_BUILD_BASE_pfail = parse-fail
+CTEST_MODE_pfail = parse-fail
+CTEST_RUNTOOL_pfail = $(CTEST_RUNTOOL)
+
 CTEST_SRC_BASE_bench = bench
 CTEST_BUILD_BASE_bench = bench
 CTEST_MODE_bench = run-pass
@@ -630,6 +637,7 @@ CTEST_DEPS_rpass-full_$(1)-T-$(2)-H-$(3) = $$(RPASS_FULL_TESTS) $$(CSREQ$(1)_T_$
 CTEST_DEPS_cfail-full_$(1)-T-$(2)-H-$(3) = $$(CFAIL_FULL_TESTS) $$(CSREQ$(1)_T_$(3)_H_$(3)) $$(SREQ$(1)_T_$(2)_H_$(3))
 CTEST_DEPS_rfail_$(1)-T-$(2)-H-$(3) = $$(RFAIL_TESTS)
 CTEST_DEPS_cfail_$(1)-T-$(2)-H-$(3) = $$(CFAIL_TESTS)
+CTEST_DEPS_pfail_$(1)-T-$(2)-H-$(3) = $$(PFAIL_TESTS)
 CTEST_DEPS_bench_$(1)-T-$(2)-H-$(3) = $$(BENCH_TESTS)
 CTEST_DEPS_perf_$(1)-T-$(2)-H-$(3) = $$(PERF_TESTS)
 CTEST_DEPS_debuginfo-gdb_$(1)-T-$(2)-H-$(3) = $$(DEBUGINFO_GDB_TESTS)
@@ -698,7 +706,7 @@ endif
 
 endef
 
-CTEST_NAMES = rpass rpass-valgrind rpass-full cfail-full rfail cfail bench perf debuginfo-gdb debuginfo-lldb codegen
+CTEST_NAMES = rpass rpass-valgrind rpass-full cfail-full rfail cfail pfail bench perf debuginfo-gdb debuginfo-lldb codegen
 
 $(foreach host,$(CFG_HOST), \
  $(eval $(foreach target,$(CFG_TARGET), \
@@ -857,6 +865,7 @@ TEST_GROUPS = \
 	cfail-full \
 	rfail \
 	cfail \
+	pfail \
 	bench \
 	perf \
 	rmake \

branches/snap-stage3/src/compiletest/common.rs

@@ -15,6 +15,7 @@ use std::str::FromStr;
 #[derive(Clone, Copy, PartialEq, Debug)]
 pub enum Mode {
     CompileFail,
+    ParseFail,
     RunFail,
     RunPass,
     RunPassValgrind,
@@ -29,6 +30,7 @@ impl FromStr for Mode {
     fn from_str(s: &str) -> Result<Mode, ()> {
         match s {
           "compile-fail" => Ok(CompileFail),
+          "parse-fail" => Ok(ParseFail),
           "run-fail" => Ok(RunFail),
           "run-pass" => Ok(RunPass),
           "run-pass-valgrind" => Ok(RunPassValgrind),
@@ -45,6 +47,7 @@ impl fmt::Display for Mode {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         fmt::Display::fmt(match *self {
             CompileFail => "compile-fail",
+            ParseFail => "parse-fail",
             RunFail => "run-fail",
             RunPass => "run-pass",
             RunPassValgrind => "run-pass-valgrind",

branches/snap-stage3/src/compiletest/compiletest.rs

@@ -21,6 +21,7 @@
 #![feature(test)]
 #![feature(unicode)]
 #![feature(env)]
+#![feature(core)]
 
 #![deny(warnings)]
 
@@ -72,7 +73,7 @@ pub fn parse_config(args: Vec<String> ) -> Config {
           reqopt("", "aux-base", "directory to find auxiliary test files", "PATH"),
           reqopt("", "stage-id", "the target-stage identifier", "stageN-TARGET"),
           reqopt("", "mode", "which sort of compile tests to run",
-                 "(compile-fail|run-fail|run-pass|run-pass-valgrind|pretty|debug-info)"),
+                 "(compile-fail|parse-fail|run-fail|run-pass|run-pass-valgrind|pretty|debug-info)"),
           optflag("", "ignored", "run tests marked as ignored"),
           optopt("", "runtool", "supervisor program to run tests under \
                                  (eg. emulator, valgrind)", "PROGRAM"),

branches/snap-stage3/src/compiletest/runtest.rs

@@ -11,7 +11,7 @@
 use self::TargetLocation::*;
 
 use common::Config;
-use common::{CompileFail, Pretty, RunFail, RunPass, RunPassValgrind, DebugInfoGdb};
+use common::{CompileFail, ParseFail, Pretty, RunFail, RunPass, RunPassValgrind, DebugInfoGdb};
 use common::{Codegen, DebugInfoLldb};
 use errors;
 use header::TestProps;
@@ -66,6 +66,7 @@ pub fn run_metrics(config: Config, testfile: String, mm: &mut MetricMap) {
     debug!("loaded props");
     match config.mode {
       CompileFail => run_cfail_test(&config, &props, &testfile),
+      ParseFail => run_cfail_test(&config, &props, &testfile),
       RunFail => run_rfail_test(&config, &props, &testfile),
       RunPass => run_rpass_test(&config, &props, &testfile),
       RunPassValgrind => run_valgrind_test(&config, &props, &testfile),
@@ -88,7 +89,7 @@ fn run_cfail_test(config: &Config, props: &TestProps, testfile: &Path) {
     let proc_res = compile_test(config, props, testfile);
 
     if proc_res.status.success() {
-        fatal_proc_rec("compile-fail test compiled successfully!",
+        fatal_proc_rec(&format!("{} test compiled successfully!", config.mode)[],
                       &proc_res);
     }
 
@@ -1133,7 +1134,7 @@ fn compile_test_(config: &Config, props: &TestProps,
     // FIXME (#9639): This needs to handle non-utf8 paths
     let mut link_args = vec!("-L".to_string(),
                              aux_dir.as_str().unwrap().to_string());
-    link_args.extend(extra_args.iter().map(|s| s.clone()));
+    link_args.extend(extra_args.iter().cloned());
     let args = make_compile_args(config,
                                  props,
                                  link_args,

branches/snap-stage3/src/libcollections/bit.rs

@@ -2286,7 +2286,7 @@ mod tests {
     #[test]
     fn test_from_bools() {
         let bools = vec![true, false, true, true];
-        let bitv: Bitv = bools.iter().map(|n| *n).collect();
+        let bitv: Bitv = bools.iter().cloned().collect();
         assert_eq!(format!("{:?}", bitv), "1011");
     }
 
@@ -2299,12 +2299,12 @@ mod tests {
     #[test]
     fn test_bitv_iterator() {
         let bools = vec![true, false, true, true];
-        let bitv: Bitv = bools.iter().map(|n| *n).collect();
+        let bitv: Bitv = bools.iter().cloned().collect();
 
         assert_eq!(bitv.iter().collect::<Vec<bool>>(), bools);
 
         let long: Vec<_> = (0i32..10000).map(|i| i % 2 == 0).collect();
-        let bitv: Bitv = long.iter().map(|n| *n).collect();
+        let bitv: Bitv = long.iter().cloned().collect();
         assert_eq!(bitv.iter().collect::<Vec<bool>>(), long)
     }
 

branches/snap-stage3/src/libcollections/dlist.rs

@@ -907,7 +907,7 @@ impl<A: Ord> Ord for DList<A> {
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<A: Clone> Clone for DList<A> {
     fn clone(&self) -> DList<A> {
-        self.iter().map(|x| x.clone()).collect()
+        self.iter().cloned().collect()
     }
 }
 
@@ -1025,7 +1025,7 @@ mod tests {
 
     #[cfg(test)]
     fn list_from<T: Clone>(v: &[T]) -> DList<T> {
-        v.iter().map(|x| (*x).clone()).collect()
+        v.iter().cloned().collect()
     }
 
     #[test]

branches/snap-stage3/src/libcollections/vec.rs

@@ -56,6 +56,7 @@ use core::cmp::{Ordering};
 use core::default::Default;
 use core::fmt;
 use core::hash::{self, Hash};
+use core::intrinsics::assume;
 use core::iter::{repeat, FromIterator, IntoIterator};
 use core::marker::{self, ContravariantLifetime, InvariantType};
 use core::mem;
@@ -1587,8 +1588,12 @@ impl<T> AsSlice<T> for Vec<T> {
     #[stable(feature = "rust1", since = "1.0.0")]
     fn as_slice(&self) -> &[T] {
         unsafe {
+            let p = *self.ptr;
+            if cfg!(not(stage0)) { // NOTE remove cfg after next snapshot
+                assume(p != 0 as *mut T);
+            }
             mem::transmute(RawSlice {
-                data: *self.ptr,
+                data: p,
                 len: self.len
             })
         }

branches/snap-stage3/src/libcore/iter.rs

@@ -332,7 +332,7 @@ pub trait IteratorExt: Iterator + Sized {
     ///
     /// ```
     /// let xs = [100, 200, 300];
-    /// let mut it = xs.iter().map(|x| *x).peekable();
+    /// let mut it = xs.iter().cloned().peekable();
     /// assert_eq!(*it.peek().unwrap(), 100);
     /// assert_eq!(it.next().unwrap(), 100);
     /// assert_eq!(it.next().unwrap(), 200);
@@ -522,7 +522,7 @@ pub trait IteratorExt: Iterator + Sized {
     ///
     /// let a = [1, 4, 2, 3, 8, 9, 6];
     /// let sum = a.iter()
-    ///             .map(|&x| x)
+    ///             .cloned()
     ///             .inspect(|&x| println!("filtering {}", x))
     ///             .filter(|&x| x % 2 == 0)
     ///             .inspect(|&x| println!("{} made it through", x))
@@ -561,7 +561,7 @@ pub trait IteratorExt: Iterator + Sized {
     ///
     /// ```
     /// let a = [1, 2, 3, 4, 5];
-    /// let b: Vec<_> = a.iter().map(|&x| x).collect();
+    /// let b: Vec<_> = a.iter().cloned().collect();
     /// assert_eq!(a, b);
     /// ```
     #[inline]
@@ -937,7 +937,7 @@ pub trait IteratorExt: Iterator + Sized {
     ///
     /// ```
     /// let a = [(1, 2), (3, 4)];
-    /// let (left, right): (Vec<_>, Vec<_>) = a.iter().map(|&x| x).unzip();
+    /// let (left, right): (Vec<_>, Vec<_>) = a.iter().cloned().unzip();
     /// assert_eq!([1, 3], left);
     /// assert_eq!([2, 4], right);
     /// ```
@@ -1142,7 +1142,7 @@ pub trait AdditiveIterator<A> {
     /// use std::iter::AdditiveIterator;
     ///
     /// let a = [1i32, 2, 3, 4, 5];
-    /// let mut it = a.iter().map(|&x| x);
+    /// let mut it = a.iter().cloned();
     /// assert!(it.sum() == 15);
     /// ```
     fn sum(self) -> A;
@@ -1305,6 +1305,23 @@ impl<T, D, I> ExactSizeIterator for Cloned<I> where
     I: ExactSizeIterator<Item=D>,
 {}
 
+#[unstable(feature = "core", reason = "trait is experimental")]
+impl<T, D, I> RandomAccessIterator for Cloned<I> where
+    T: Clone,
+    D: Deref<Target=T>,
+    I: RandomAccessIterator<Item=D>
+{
+    #[inline]
+    fn indexable(&self) -> usize {
+        self.it.indexable()
+    }
+
+    #[inline]
+    fn idx(&mut self, index: usize) -> Option<T> {
+        self.it.idx(index).cloned()
+    }
+}
+
 /// An iterator that repeats endlessly
 #[derive(Clone)]
 #[must_use = "iterator adaptors are lazy and do nothing unless consumed"]