Auto merge of #32351 - eddyb:rollup, r=eddyb

Rollup of 14 pull requests

- Successful merges: #32265, #32269, #32271, #32288, #32308, #32316, #32319, #32321, #32327, #32329, #32332, #32337, #32342, #32347
- Failed merges:

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

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 :=

src/bootstrap/build/native.rs

@@ -114,7 +114,8 @@ 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"

src/compiletest/runtest.rs

@@ -1025,6 +1025,10 @@ 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),

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              |

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

src/doc/book/references-and-borrowing.md

@@ -163,8 +163,8 @@ both at the same time:
 * exactly one mutable reference (`&mut T`).
 
 
-You may notice that this is very similar, though not exactly the same as,
-to the definition of a data race:
+You may notice that this is very similar to, though not exactly the same as,
+the definition of a data race:
 
 > There is a ‘data race’ when two or more pointers access the same memory
 > location at the same time, where at least one of them is writing, and the

src/doc/book/variable-bindings.md

@@ -18,14 +18,14 @@ function, rather than leaving it off. Otherwise, you’ll get an error.
 
 In many languages, a variable binding would be called a *variable*, but Rust’s
 variable bindings have a few tricks up their sleeves. For example the
-left-hand side of a `let` expression is a ‘[pattern][pattern]’, not a
+left-hand side of a `let` statement is a ‘[pattern][pattern]’, not a
 variable name. This means we can do things like:
 
 ```rust
 let (x, y) = (1, 2);
 ```
 
-After this expression is evaluated, `x` will be one, and `y` will be two.
+After this statement is evaluated, `x` will be one, and `y` will be two.
 Patterns are really powerful, and have [their own section][pattern] in the
 book. We don’t need those features for now, so we’ll keep this in the back
 of our minds as we go forward.

src/librustc/middle/liveness.rs

@@ -115,6 +115,7 @@ use middle::pat_util;
 use middle::ty::{self, TyCtxt, ParameterEnvironment};
 use middle::traits::{self, ProjectionMode};
 use middle::infer;
+use middle::subst::Subst;
 use lint;
 use util::nodemap::NodeMap;
 
@@ -1491,6 +1492,7 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> {
                     if self.live_on_entry(entry_ln, self.s.no_ret_var).is_some() => {
 
                 let param_env = ParameterEnvironment::for_item(&self.ir.tcx, id);
+                let t_ret_subst = t_ret.subst(&self.ir.tcx, &param_env.free_substs);
                 let infcx = infer::new_infer_ctxt(&self.ir.tcx,
                                                   &self.ir.tcx.tables,
                                                   Some(param_env),
@@ -1498,7 +1500,7 @@ impl<'a, 'tcx> Liveness<'a, 'tcx> {
                 let cause = traits::ObligationCause::dummy();
                 let norm = traits::fully_normalize(&infcx,
                                                    cause,
-                                                   &t_ret);
+                                                   &t_ret_subst);
 
                 if norm.unwrap().is_nil() {
                     // for nil return types, it is ok to not return a value expl.

src/librustc_trans/trans/intrinsic.rs

@@ -589,15 +589,20 @@ pub fn trans_intrinsic_call<'a, 'blk, 'tcx>(mut bcx: Block<'blk, 'tcx>,
         },
         (_, "volatile_store") => {
             let tp_ty = *substs.types.get(FnSpace, 0);
-            let val = if fn_ty.args[1].is_indirect() {
-                Load(bcx, llargs[1])
+            if type_is_fat_ptr(bcx.tcx(), tp_ty) {
+                VolatileStore(bcx, llargs[1], expr::get_dataptr(bcx, llargs[0]));
+                VolatileStore(bcx, llargs[2], expr::get_meta(bcx, llargs[0]));
             } else {
-                from_immediate(bcx, llargs[1])
-            };
-            let ptr = PointerCast(bcx, llargs[0], val_ty(val).ptr_to());
-            let store = VolatileStore(bcx, val, ptr);
-            unsafe {
-                llvm::LLVMSetAlignment(store, type_of::align_of(ccx, tp_ty));
+                let val = if fn_ty.args[1].is_indirect() {
+                    Load(bcx, llargs[1])
+                } else {
+                    from_immediate(bcx, llargs[1])
+                };
+                let ptr = PointerCast(bcx, llargs[0], val_ty(val).ptr_to());
+                let store = VolatileStore(bcx, val, ptr);
+                unsafe {
+                    llvm::LLVMSetAlignment(store, type_of::align_of(ccx, tp_ty));
+                }
             }
             C_nil(ccx)
         },

src/librustdoc/html/static/main.js

@@ -740,7 +740,11 @@
             $(".search-input").on("keyup input",function() {
                 clearTimeout(searchTimeout);
                 if ($(this).val().length === 0) {
-                    window.history.replaceState("", "std - Rust", "?search=");
+                    if (browserSupportsHistoryApi()) {
+                        history.replaceState("", "std - Rust", "?search=");
+                    } else {
+                        location.replace("?search=");
+                    }
                     $('#main.content').removeClass('hidden');
                     $('#search.content').addClass('hidden');
                 } else {
@@ -996,7 +1000,7 @@
         var prev_id = 0;
 
         function set_fragment(name) {
-            if (history.replaceState) {
+            if (browserSupportsHistoryApi()) {
                 history.replaceState(null, null, '#' + name);
                 $(window).trigger('hashchange');
             } else {

src/librustdoc/test.rs

@@ -257,10 +257,10 @@ fn runtest(test: &str, cratename: &str, cfgs: Vec<String>, libs: SearchPaths,
     }
 
     match {
-        let b_sess = AssertRecoverSafe::new(&sess);
-        let b_cstore = AssertRecoverSafe::new(&cstore);
-        let b_cfg = AssertRecoverSafe::new(cfg.clone());
-        let b_control = AssertRecoverSafe::new(&control);
+        let b_sess = AssertRecoverSafe(&sess);
+        let b_cstore = AssertRecoverSafe(&cstore);
+        let b_cfg = AssertRecoverSafe(cfg.clone());
+        let b_control = AssertRecoverSafe(&control);
 
         panic::recover(|| {
             driver::compile_input(&b_sess, &b_cstore, (*b_cfg).clone(),

src/libstd/panic.rs

@@ -161,7 +161,7 @@ pub trait RefRecoverSafe {}
 /// // });
 ///
 /// // This, however, will compile due to the `AssertRecoverSafe` wrapper
-/// let result = panic::recover(AssertRecoverSafe::new(|| {
+/// let result = panic::recover(AssertRecoverSafe(|| {
 ///     variable += 3;
 /// }));
 /// // ...
@@ -185,7 +185,7 @@ pub trait RefRecoverSafe {}
 /// let other_capture = 3;
 ///
 /// let result = {
-///     let mut wrapper = AssertRecoverSafe::new(&mut variable);
+///     let mut wrapper = AssertRecoverSafe(&mut variable);
 ///     panic::recover(move || {
 ///         **wrapper += other_capture;
 ///     })
@@ -193,7 +193,7 @@ pub trait RefRecoverSafe {}
 /// // ...
 /// ```
 #[unstable(feature = "recover", reason = "awaiting feedback", issue = "27719")]
-pub struct AssertRecoverSafe<T>(T);
+pub struct AssertRecoverSafe<T>(pub T);
 
 // Implementations of the `RecoverSafe` trait:
 //
@@ -230,12 +230,16 @@ impl<T> RefRecoverSafe for AssertRecoverSafe<T> {}
 impl<T> AssertRecoverSafe<T> {
     /// Creates a new `AssertRecoverSafe` wrapper around the provided type.
     #[unstable(feature = "recover", reason = "awaiting feedback", issue = "27719")]
+    #[rustc_deprecated(reason = "the type's field is now public, construct it directly",
+                       since = "1.9.0")]
     pub fn new(t: T) -> AssertRecoverSafe<T> {
         AssertRecoverSafe(t)
     }
 
     /// Consumes the `AssertRecoverSafe`, returning the wrapped value.
     #[unstable(feature = "recover", reason = "awaiting feedback", issue = "27719")]
+    #[rustc_deprecated(reason = "the type's field is now public, access it directly",
+                       since = "1.9.0")]
     pub fn into_inner(self) -> T {
         self.0
     }

src/libsyntax/ext/quote.rs

@@ -121,6 +121,12 @@ pub mod rt {
         }
     }
 
+    impl ToTokens for P<ast::ImplItem> {
+        fn to_tokens(&self, _cx: &ExtCtxt) -> Vec<TokenTree> {
+            vec![TokenTree::Token(self.span, token::Interpolated(token::NtImplItem(self.clone())))]
+        }
+    }
+
     impl ToTokens for ast::TraitItem {
         fn to_tokens(&self, _cx: &ExtCtxt) -> Vec<TokenTree> {
             vec![TokenTree::Token(self.span,

src/llvm

@@ -1 +1 @@
-Subproject commit 63f3a1bfcd78355398a460712db25922247756b6
+Subproject commit 25c7dc370359433ca02f29919dfa36f94432155e

src/rustllvm/llvm-auto-clean-trigger

@@ -1,4 +1,4 @@
 # If this file is modified, then llvm will be forcibly cleaned and then rebuilt.
 # The actual contents of this file do not matter, but to trigger a change on the
 # build bots then the contents should be changed so git updates the mtime.
-2016-03-15
+2016-03-18

src/test/compile-fail/issue-32323.rs

@@ -0,0 +1,18 @@
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+pub trait Tr<'a> {
+    type Out;
+}
+
+pub fn f<'a, T: Tr<'a>>() -> <T as Tr<'a>>::Out {}
+//~^ ERROR not all control paths return a value
+
+pub fn main() {}

src/test/run-pass/binary-heap-panic-safe.rs

@@ -70,7 +70,7 @@ fn test_integrity() {
             {
                 // push the panicking item to the heap and catch the panic
                 let thread_result = {
-                    let mut heap_ref = AssertRecoverSafe::new(&mut heap);
+                    let mut heap_ref = AssertRecoverSafe(&mut heap);
                     panic::recover(move || {
                         heap_ref.push(panic_item);
                     })

src/test/run-pass/volatile-fat-ptr.rs

@@ -0,0 +1,22 @@
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(volatile)]
+use std::ptr::{read_volatile, write_volatile};
+
+fn main() {
+    let mut x: &'static str = "test";
+    unsafe {
+        let a = read_volatile(&x);
+        assert_eq!(a, "test");
+        write_volatile(&mut x, "foo");
+        assert_eq!(x, "foo");
+    }
+}