---

yaml
---
r: 235751
b: refs/heads/stable
c: 9413a92
h: refs/heads/master
i:
  235749: 5bd2e0c
  235747: 600a033
  235743: f504a50
v: v3

Author: bors

[refs]

@@ -29,7 +29,7 @@ refs/heads/tmp: afae2ff723393b3ab4ccffef6ac7c6d1809e2da0
 refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f
 refs/tags/homu-tmp: f859507de8c410b648d934d8f5ec1c52daac971d
 refs/tags/1.0.0-beta: 8cbb92b53468ee2b0c2d3eeb8567005953d40828
-refs/heads/stable: d066a7b5069ff857a5bffe7cb5168fe63158144f
+refs/heads/stable: 9413a926fcfc88c46ea04534508284a822e1109f
 refs/tags/1.0.0: 55bd4f8ff2b323f317ae89e254ce87162d52a375
 refs/tags/1.1.0: bc3c16f09287e5545c1d3f76b7abd54f2eca868b
 refs/tags/1.2.0: f557861f822c34f07270347b94b5280de20a597e

branches/stable/src/doc/trpl/ffi.md

@@ -340,7 +340,7 @@ libraries:
 Note that frameworks are only available on OSX targets.
 
 The different `kind` values are meant to differentiate how the native library
-participates in linkage. From a linkage perspective, the rust compiler creates
+participates in linkage. From a linkage perspective, the Rust compiler creates
 two flavors of artifacts: partial (rlib/staticlib) and final (dylib/binary).
 Native dynamic library and framework dependencies are propagated to the final
 artifact boundary, while static library dependencies are not propagated at
@@ -350,9 +350,9 @@ artifact.
 A few examples of how this model can be used are:
 
 * A native build dependency. Sometimes some C/C++ glue is needed when writing
-  some rust code, but distribution of the C/C++ code in a library format is just
+  some Rust code, but distribution of the C/C++ code in a library format is just
   a burden. In this case, the code will be archived into `libfoo.a` and then the
-  rust crate would declare a dependency via `#[link(name = "foo", kind =
+  Rust crate would declare a dependency via `#[link(name = "foo", kind =
   "static")]`.
 
   Regardless of the flavor of output for the crate, the native static library
@@ -361,7 +361,7 @@ A few examples of how this model can be used are:
 
 * A normal dynamic dependency. Common system libraries (like `readline`) are
   available on a large number of systems, and often a static copy of these
-  libraries cannot be found. When this dependency is included in a rust crate,
+  libraries cannot be found. When this dependency is included in a Rust crate,
   partial targets (like rlibs) will not link to the library, but when the rlib
   is included in a final target (like a binary), the native library will be
   linked in.

branches/stable/src/doc/trpl/installing-rust.md

@@ -2,7 +2,7 @@
 
 The first step to using Rust is to install it! There are a number of ways to
 install Rust, but the easiest is to use the `rustup` script. If you're on Linux
-or a Mac, all you need to do is this: 
+or a Mac, all you need to do is this:
 
 > Note: you don't need to type in the `$`s, they just indicate the start of
 > each command. You’ll see many tutorials and examples around the web that
@@ -25,6 +25,12 @@ $ sh rustup.sh
 [insecurity]: http://curlpipesh.tumblr.com
 
 If you're on Windows, please download the appropriate [installer][install-page].
+**NOTE:** By default, the Windows installer will not add Rust to the %PATH%
+system variable. If this is the only version of Rust you are installing and you
+want to be able to run it from the command line, click on "Advanced" on the
+install dialog and on the "Product Features" page ensure "Add to PATH" is
+installed on the local hard drive.
+
 
 [install-page]: http://www.rust-lang.org/install.html
 
@@ -87,6 +93,11 @@ rustc 1.0.0 (a59de37e9 2015-05-13)
 
 If you did, Rust has been installed successfully! Congrats!
 
+If you didn't and you're on Windows, check that Rust is in your %PATH% system
+variable. If it isn't, run the installer again, select "Change" on the "Change,
+repair, or remove installation" page and ensure "Add to PATH" is installed on
+the local hard drive.
+
 This installer also installs a copy of the documentation locally, so you can
 read it offline. On UNIX systems, `/usr/local/share/doc/rust` is the location.
 On Windows, it's in a `share/doc` directory, inside wherever you installed Rust
@@ -101,5 +112,5 @@ resources include [the user’s forum][users], and
 
 [irc]: irc://irc.mozilla.org/#rust
 [mibbit]: http://chat.mibbit.com/?server=irc.mozilla.org&channel=%23rust
-[users]: http://users.rust-lang.org/ 
+[users]: http://users.rust-lang.org/
 [stackoverflow]: http://stackoverflow.com/questions/tagged/rust

branches/stable/src/doc/trpl/release-channels.md

@@ -43,3 +43,26 @@ This will help alert the team in case there’s an accidental regression.
 Additionally, testing against nightly can catch regressions even sooner, and so
 if you don’t mind a third build, we’d appreciate testing against all channels.
 
+As an example, many Rust programmers use [Travis](https://travis-ci.org/) to
+test their crates, which is free for open source projects. Travis [supports
+Rust directly][travis], and you can use a `.travis.yml` file like this to
+test on all channels:
+
+```yaml
+language: rust
+rust:
+  - nightly
+  - beta
+  - stable
+
+matrix:
+  allow_failures:
+    - rust: nightly
+```
+
+[travis]: http://docs.travis-ci.com/user/languages/rust/
+
+With this configuration, Travis will test all three channels, but if something
+breaks on nightly, it won’t fail your build. A similar configuration is
+recommended for any CI system, check the documentation of the one you’re
+using for more details.

branches/stable/src/doc/trpl/unsafe.md

@@ -100,10 +100,14 @@ that you normally can not do. Just three. Here they are:
 
 That’s it. It’s important that `unsafe` does not, for example, ‘turn off the
 borrow checker’. Adding `unsafe` to some random Rust code doesn’t change its
-semantics, it won’t just start accepting anything.
+semantics, it won’t just start accepting anything. But it will let you write
+things that _do_ break some of the rules.
 
-But it will let you write things that _do_ break some of the rules. Let’s go
-over these three abilities in order.
+You will also encounter the `unsafe` keyword when writing bindings to foreign
+(non-Rust) interfaces. You're encouraged to write a safe, native Rust interface
+around the methods provided by the library.
+
+Let’s go over the basic three abilities listed, in order.
 
 ## Access or update a `static mut`
 

branches/stable/src/libcore/iter.rs

@@ -2555,7 +2555,7 @@ impl<I: RandomAccessIterator, F> RandomAccessIterator for Inspect<I, F>
 #[unstable(feature = "iter_unfold")]
 #[derive(Clone)]
 #[deprecated(since = "1.2.0",
-             reason = "has gained enough traction to retain its position \
+             reason = "has not gained enough traction to retain its position \
                        in the standard library")]
 #[allow(deprecated)]
 pub struct Unfold<St, F> {
@@ -2567,7 +2567,7 @@ pub struct Unfold<St, F> {
 
 #[unstable(feature = "iter_unfold")]
 #[deprecated(since = "1.2.0",
-             reason = "has gained enough traction to retain its position \
+             reason = "has not gained enough traction to retain its position \
                        in the standard library")]
 #[allow(deprecated)]
 impl<A, St, F> Unfold<St, F> where F: FnMut(&mut St) -> Option<A> {
@@ -3018,7 +3018,7 @@ type IterateState<T, F> = (F, Option<T>, bool);
 /// from a given seed value.
 #[unstable(feature = "iter_iterate")]
 #[deprecated(since = "1.2.0",
-             reason = "has gained enough traction to retain its position \
+             reason = "has not gained enough traction to retain its position \
                        in the standard library")]
 #[allow(deprecated)]
 pub type Iterate<T, F> = Unfold<IterateState<T, F>, fn(&mut IterateState<T, F>) -> Option<T>>;
@@ -3027,7 +3027,7 @@ pub type Iterate<T, F> = Unfold<IterateState<T, F>, fn(&mut IterateState<T, F>)
 /// repeated applications of the given function `f`.
 #[unstable(feature = "iter_iterate")]
 #[deprecated(since = "1.2.0",
-             reason = "has gained enough traction to retain its position \
+             reason = "has not gained enough traction to retain its position \
                        in the standard library")]
 #[allow(deprecated)]
 pub fn iterate<T, F>(seed: T, f: F) -> Iterate<T, F> where

branches/stable/src/libcore/str/mod.rs

@@ -871,12 +871,12 @@ impl<'a> DoubleEndedIterator for LinesAny<'a> {
 Section: Comparing strings
 */
 
-// share the implementation of the lang-item vs. non-lang-item
-// eq_slice.
+/// Bytewise slice equality
 /// NOTE: This function is (ab)used in rustc::middle::trans::_match
 /// to compare &[u8] byte slices that are not necessarily valid UTF-8.
+#[lang = "str_eq"]
 #[inline]
-fn eq_slice_(a: &str, b: &str) -> bool {
+fn eq_slice(a: &str, b: &str) -> bool {
     // NOTE: In theory n should be libc::size_t and not usize, but libc is not available here
     #[allow(improper_ctypes)]
     extern { fn memcmp(s1: *const i8, s2: *const i8, n: usize) -> i32; }
@@ -887,15 +887,6 @@ fn eq_slice_(a: &str, b: &str) -> bool {
     }
 }
 
-/// Bytewise slice equality
-/// NOTE: This function is (ab)used in rustc::middle::trans::_match
-/// to compare &[u8] byte slices that are not necessarily valid UTF-8.
-#[lang = "str_eq"]
-#[inline]
-fn eq_slice(a: &str, b: &str) -> bool {
-    eq_slice_(a, b)
-}
-
 /*
 Section: Misc
 */

branches/stable/src/librustc/diagnostics.rs

@@ -335,6 +335,24 @@ This error indicates that an attempt was made to divide by zero (or take the
 remainder of a zero divisor) in a static or constant expression.
 "##,
 
+E0030: r##"
+When matching against a range, the compiler verifies that the range is
+non-empty.  Range patterns include both end-points, so this is equivalent to
+requiring the start of the range to be less than or equal to the end of the
+range.
+
+For example:
+
+```
+match 5u32 {
+    // This range is ok, albeit pointless.
+    1 ... 1 => ...
+    // This range is empty, and the compiler can tell.
+    1000 ... 5 => ...
+}
+```
+"##,
+
 E0079: r##"
 Enum variants which contain no data can be given a custom integer
 representation. This error indicates that the value provided is not an

branches/stable/src/librustc/middle/check_const.rs

@@ -26,6 +26,7 @@
 
 use middle::cast::{CastKind};
 use middle::const_eval;
+use middle::const_eval::EvalHint::ExprTypeChecked;
 use middle::def;
 use middle::expr_use_visitor as euv;
 use middle::infer;
@@ -39,6 +40,7 @@ use syntax::codemap::Span;
 use syntax::visit::{self, Visitor};
 
 use std::collections::hash_map::Entry;
+use std::cmp::Ordering;
 
 // Const qualification, from partial to completely promotable.
 bitflags! {
@@ -365,6 +367,19 @@ impl<'a, 'tcx, 'v> Visitor<'v> for CheckCrateVisitor<'a, 'tcx> {
             ast::PatRange(ref start, ref end) => {
                 self.global_expr(Mode::Const, &**start);
                 self.global_expr(Mode::Const, &**end);
+
+                match const_eval::compare_lit_exprs(self.tcx, start, end) {
+                    Some(Ordering::Less) |
+                    Some(Ordering::Equal) => {}
+                    Some(Ordering::Greater) => {
+                        span_err!(self.tcx.sess, start.span, E0030,
+                            "lower range bound must be less than or equal to upper");
+                    }
+                    None => {
+                        self.tcx.sess.span_bug(
+                            start.span, "literals of different types in range pat");
+                    }
+                }
             }
             _ => visit::walk_pat(self, p)
         }
@@ -457,7 +472,8 @@ impl<'a, 'tcx, 'v> Visitor<'v> for CheckCrateVisitor<'a, 'tcx> {
                 match node_ty.sty {
                     ty::TyUint(_) | ty::TyInt(_) if div_or_rem => {
                         if !self.qualif.intersects(ConstQualif::NOT_CONST) {
-                            match const_eval::eval_const_expr_partial(self.tcx, ex, None) {
+                            match const_eval::eval_const_expr_partial(
+                                    self.tcx, ex, ExprTypeChecked) {
                                 Ok(_) => {}
                                 Err(msg) => {
                                     span_err!(self.tcx.sess, msg.span, E0020,

branches/stable/src/librustc/middle/check_match.rs

@@ -15,6 +15,7 @@ use self::WitnessPreference::*;
 use middle::const_eval::{compare_const_vals, ConstVal};
 use middle::const_eval::{eval_const_expr, eval_const_expr_partial};
 use middle::const_eval::{const_expr_to_pat, lookup_const_by_id};
+use middle::const_eval::EvalHint::ExprTypeChecked;
 use middle::def::*;
 use middle::expr_use_visitor::{ConsumeMode, Delegate, ExprUseVisitor, Init};
 use middle::expr_use_visitor::{JustWrite, LoanCause, MutateMode};
@@ -263,7 +264,7 @@ fn check_for_bindings_named_the_same_as_variants(cx: &MatchCheckCtxt, pat: &Pat)
 fn check_for_static_nan(cx: &MatchCheckCtxt, pat: &Pat) {
     ast_util::walk_pat(pat, |p| {
         if let ast::PatLit(ref expr) = p.node {
-            match eval_const_expr_partial(cx.tcx, &**expr, None) {
+            match eval_const_expr_partial(cx.tcx, &**expr, ExprTypeChecked) {
                 Ok(ConstVal::Float(f)) if f.is_nan() => {
                     span_warn!(cx.tcx.sess, p.span, E0003,
                                "unmatchable NaN in pattern, \