---

yaml
---
r: 277759
b: refs/heads/try
c: cc98f4c
h: refs/heads/master
i:
  277757: e3aa5a8
  277755: 88dd594
  277751: ef496c0
  277743: 4dc22ad
  277727: 380edbb
  277695: 1e3177e
  277631: 2084a9a
  277503: 0f41694

Author: Manishearth

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 6dbb0e86aec11050480beb76eade6fb805010ba7
 refs/heads/snap-stage3: 235d77457d80b549dad3ac36d94f235208a1eafb
-refs/heads/try: a9779df1886e18923f40cf0bb67ab72d4e4942df
+refs/heads/try: cc98f4cbb09d0165dcca18664d1fe10cb39a5dfa
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try/mk/crates.mk

@@ -111,7 +111,7 @@ DEPS_rustc_lint := rustc log syntax rustc_const_eval
 DEPS_rustc_llvm := native:rustllvm libc std rustc_bitflags
 DEPS_rustc_metadata := rustc syntax rbml rustc_const_math
 DEPS_rustc_passes := syntax rustc core rustc_const_eval
-DEPS_rustc_mir := rustc syntax rustc_const_math rustc_const_eval
+DEPS_rustc_mir := rustc syntax rustc_const_math rustc_const_eval rustc_bitflags
 DEPS_rustc_resolve := arena rustc log syntax
 DEPS_rustc_platform_intrinsics := std
 DEPS_rustc_plugin := rustc rustc_metadata syntax rustc_mir

branches/try/mk/ctags.mk

@@ -15,14 +15,21 @@
 
 .PHONY: TAGS.emacs TAGS.vi
 
-CTAGS_LOCATIONS=$(wildcard ${CFG_SRC_DIR}src/lib*)
+CTAGS_RUSTC_LOCATIONS=$(patsubst ${CFG_SRC_DIR}src/lib%test,, \
+				$(wildcard ${CFG_SRC_DIR}src/lib*)) ${CFG_SRC_DIR}src/libtest
 CTAGS_LOCATIONS=$(patsubst ${CFG_SRC_DIR}src/librust%,, \
                 $(patsubst ${CFG_SRC_DIR}src/lib%test,, \
 				$(wildcard ${CFG_SRC_DIR}src/lib*))) ${CFG_SRC_DIR}src/libtest
-CTAGS_OPTS=--options="${CFG_SRC_DIR}src/etc/ctags.rust" --languages=Rust --recurse ${CTAGS_LOCATIONS}
+CTAGS_OPTS=--options="${CFG_SRC_DIR}src/etc/ctags.rust" --languages=Rust --recurse
+
+TAGS.rustc.emacs:
+	ctags -e -f $@ ${CTAGS_OPTS} ${CTAGS_RUSTC_LOCATIONS}
 
 TAGS.emacs:
-	ctags -e -f $@ ${CTAGS_OPTS}
+	ctags -e -f $@ ${CTAGS_OPTS} ${CTAGS_LOCATIONS}
+
+TAGS.rustc.vi:
+	ctags -f $@ ${CTAGS_OPTS} ${CTAGS_RUSTC_LOCATIONS}
 
 TAGS.vi:
-	ctags -f $@ ${CTAGS_OPTS}
+	ctags -f $@ ${CTAGS_OPTS} ${CTAGS_LOCATIONS}

branches/try/mk/dist.mk

@@ -77,6 +77,7 @@ $(PKG_TAR): $(PKG_FILES)
 	$(Q)mkdir -p tmp/dist/$(PKG_NAME)
 	$(Q)tar \
          -C $(S) \
+         -f - \
          --exclude-vcs \
          --exclude=*~ \
          --exclude=*.pyc \
@@ -86,7 +87,7 @@ $(PKG_TAR): $(PKG_FILES)
          --exclude=*/llvm/test/*/*/*.ll \
          --exclude=*/llvm/test/*/*/*.td \
          --exclude=*/llvm/test/*/*/*.s \
-         -c $(UNROOTED_PKG_FILES) | tar -x -C tmp/dist/$(PKG_NAME)
+         -c $(UNROOTED_PKG_FILES) | tar -x -f - -C tmp/dist/$(PKG_NAME)
 	@$(call E, making $@)
 	$(Q)tar -czf $(PKG_TAR) -C tmp/dist $(PKG_NAME)
 	$(Q)rm -Rf tmp/dist/$(PKG_NAME)

branches/try/mk/platform.mk

@@ -169,7 +169,7 @@ ifdef CFG_CCACHE_BASEDIR
   export CCACHE_BASEDIR
 endif
 
-FIND_COMPILER = $(word 1,$(1:ccache=))
+FIND_COMPILER = $(strip $(1:ccache=))
 
 define CFG_MAKE_TOOLCHAIN
   # Prepend the tools with their prefix if cross compiling
@@ -187,7 +187,7 @@ define CFG_MAKE_TOOLCHAIN
     endif
   endif
 
-  CFG_COMPILE_C_$(1) = '$$(CC_$(1))' \
+  CFG_COMPILE_C_$(1) = '$$(call FIND_COMPILER,$$(CC_$(1)))' \
         $$(CFLAGS) \
         $$(CFG_GCCISH_CFLAGS) \
         $$(CFG_GCCISH_CFLAGS_$(1)) \
@@ -198,7 +198,7 @@ define CFG_MAKE_TOOLCHAIN
         $$(CFG_GCCISH_LINK_FLAGS_$(1)) \
         $$(CFG_GCCISH_DEF_FLAG_$(1))$$(3) $$(2) \
         $$(call CFG_INSTALL_NAME_$(1),$$(4))
-  CFG_COMPILE_CXX_$(1) = '$$(CXX_$(1))' \
+  CFG_COMPILE_CXX_$(1) = '$$(call FIND_COMPILER,$$(CXX_$(1)))' \
         $$(CXXFLAGS) \
         $$(CFG_GCCISH_CFLAGS) \
         $$(CFG_GCCISH_CXXFLAGS) \

branches/try/mk/tests.mk

@@ -635,8 +635,8 @@ CTEST_COMMON_ARGS$(1)-T-$(2)-H-$(3) = \
         --host-rustcflags "$(RUSTC_FLAGS_$(3)) $$(CTEST_RUSTC_FLAGS) -L $$(RT_OUTPUT_DIR_$(3))" \
         --lldb-python-dir=$(CFG_LLDB_PYTHON_DIR) \
         --target-rustcflags "$(RUSTC_FLAGS_$(2)) $$(CTEST_RUSTC_FLAGS) -L $$(RT_OUTPUT_DIR_$(2))" \
-	--cc '$$(CC_$(2))' \
-	--cxx '$$(CXX_$(2))' \
+	--cc '$$(call FIND_COMPILER,$$(CC_$(2)))' \
+	--cxx '$$(call FIND_COMPILER,$$(CXX_$(2)))' \
 	--cflags "$$(CFG_GCCISH_CFLAGS_$(2))" \
 	--llvm-components "$$(LLVM_ALL_COMPONENTS_$(2))" \
 	--llvm-cxxflags "$$(LLVM_CXXFLAGS_$(2))" \

branches/try/src/bootstrap/build/job.rs

@@ -54,7 +54,7 @@ pub unsafe fn setup() {
 
     // Indicate that when all handles to the job object are gone that all
     // process in the object should be killed. Note that this includes our
-    // entire process tree by default because we've added ourselves and and our
+    // entire process tree by default because we've added ourselves and our
     // children will reside in the job by default.
     let mut info = mem::zeroed::<JOBOBJECT_EXTENDED_LIMIT_INFORMATION>();
     info.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;

branches/try/src/doc/reference.md

@@ -2063,33 +2063,41 @@ arbitrarily complex configurations through nesting.
 
 The following configurations must be defined by the implementation:
 
-* `debug_assertions` - Enabled by default when compiling without optimizations.
-  This can be used to enable extra debugging code in development but not in
-  production.  For example, it controls the behavior of the standard library's
-  `debug_assert!` macro.
-* `target_arch = "..."` - Target CPU architecture, such as `"x86"`, `"x86_64"`
-  `"mips"`, `"powerpc"`, `"powerpc64"`, `"arm"`, or `"aarch64"`.
-* `target_endian = "..."` - Endianness of the target CPU, either `"little"` or
-  `"big"`.
-* `target_env = ".."` - An option provided by the compiler by default
-  describing the runtime environment of the target platform. Some examples of
-  this are `musl` for builds targeting the MUSL libc implementation, `msvc` for
-  Windows builds targeting MSVC, and `gnu` frequently the rest of the time. This
-  option may also be blank on some platforms.
+* `target_arch = "..."` - Target CPU architecture, such as `"x86"`,
+  `"x86_64"` `"mips"`, `"powerpc"`, `"powerpc64"`, `"arm"`, or
+  `"aarch64"`. This value is closely related to the first element of
+  the platform target triple, though it is not identical.
+* `target_os = "..."` - Operating system of the target, examples
+  include `"windows"`, `"macos"`, `"ios"`, `"linux"`, `"android"`,
+  `"freebsd"`, `"dragonfly"`, `"bitrig"` , `"openbsd"` or
+  `"netbsd"`. This value is closely related to the second and third
+  element of the platform target triple, though it is not identical.
 * `target_family = "..."` - Operating system family of the target, e. g.
   `"unix"` or `"windows"`. The value of this configuration option is defined
   as a configuration itself, like `unix` or `windows`.
-* `target_os = "..."` - Operating system of the target, examples include
-  `"windows"`, `"macos"`, `"ios"`, `"linux"`, `"android"`, `"freebsd"`, `"dragonfly"`,
-  `"bitrig"` , `"openbsd"` or `"netbsd"`.
+* `unix` - See `target_family`.
+* `windows` - See `target_family`.
+* `target_env = ".."` - Further disambiguates the target platform with
+  information about the ABI/libc. Presently this value is either
+  `"gnu"`, `"msvc"`, `"musl"`, or the empty string. For historical
+  reasons this value has only been defined as non-empty when needed
+  for disambiguation. Thus on many GNU platforms this value will be
+  empty. This value is closely related to the fourth element of the
+  platform target triple, though it is not identical. For example,
+  embedded ABIs such as `gnueabihf` will simply define `target_env` as
+  `"gnu"`.
+* `target_endian = "..."` - Endianness of the target CPU, either `"little"` or
+  `"big"`.
 * `target_pointer_width = "..."` - Target pointer width in bits. This is set
   to `"32"` for targets with 32-bit pointers, and likewise set to `"64"` for
   64-bit pointers.
 * `target_vendor = "..."` - Vendor of the target, for example `apple`, `pc`, or
   simply `"unknown"`.
 * `test` - Enabled when compiling the test harness (using the `--test` flag).
-* `unix` - See `target_family`.
-* `windows` - See `target_family`.
+* `debug_assertions` - Enabled by default when compiling without optimizations.
+  This can be used to enable extra debugging code in development but not in
+  production.  For example, it controls the behavior of the standard library's
+  `debug_assert!` macro.
 
 You can also set another attribute based on a `cfg` variable with `cfg_attr`:
 

branches/try/src/libcollections/slice.rs

@@ -419,8 +419,8 @@ impl<T> [T] {
     ///
     /// ```rust
     /// let v = &[1, 2, 3, 4, 5];
-    /// for win in v.chunks(2) {
-    ///     println!("{:?}", win);
+    /// for chunk in v.chunks(2) {
+    ///     println!("{:?}", chunk);
     /// }
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]

branches/try/src/libcore/clone.rs

@@ -49,6 +49,11 @@ use marker::Sized;
 /// A common trait for cloning an object.
 ///
 /// This trait can be used with `#[derive]`.
+///
+/// Types that are `Copy` should have a trivial implementation of `Clone`. More formally:
+/// if `T: Copy`, `x: T`, and `y: &T`, then `let x = y.clone();` is equivalent to `let x = *y;`.
+/// Manual implementations should be careful to uphold this invariant; however, unsafe code
+/// must not rely on it to ensure memory safety.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub trait Clone : Sized {
     /// Returns a copy of the value.

branches/try/src/libcore/iter/iterator.rs

@@ -214,7 +214,7 @@ pub trait Iterator {
     /// Like most indexing operations, the count starts from zero, so `nth(0)`
     /// returns the first value, `nth(1)` the second, and so on.
     ///
-    /// `nth()` will return `None` if `n` is larger than the length of the
+    /// `nth()` will return `None` if `n` is greater than or equal to the length of the
     /// iterator.
     ///
     /// # Examples
@@ -237,7 +237,7 @@ pub trait Iterator {
     /// assert_eq!(iter.nth(1), None);
     /// ```
     ///
-    /// Returning `None` if there are less than `n` elements:
+    /// Returning `None` if there are less than `n + 1` elements:
     ///
     /// ```
     /// let a = [1, 2, 3];

branches/try/src/libcore/num/mod.rs

@@ -37,6 +37,17 @@ use slice::SliceExt;
 /// `wrapping_add`, or through the `Wrapping<T>` type, which says that
 /// all standard arithmetic operations on the underlying value are
 /// intended to have wrapping semantics.
+///
+/// # Examples
+///
+/// ```
+/// use std::num::Wrapping;
+///
+/// let zero = Wrapping(0u32);
+/// let one = Wrapping(1u32);
+///
+/// assert_eq!(std::u32::MAX, (zero - one).0);
+/// ```
 #[stable(feature = "rust1", since = "1.0.0")]
 #[derive(PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Default, Hash)]
 pub struct Wrapping<T>(#[stable(feature = "rust1", since = "1.0.0")] pub T);

branches/try/src/libcoretest/lib.rs

@@ -15,7 +15,6 @@
 #![feature(box_syntax)]
 #![feature(cell_extras)]
 #![feature(const_fn)]
-#![feature(core_float)]
 #![feature(core_private_bignum)]
 #![feature(core_private_diy_float)]
 #![feature(dec2flt)]

branches/try/src/libcoretest/num/mod.rs

@@ -12,7 +12,6 @@ use core::convert::TryFrom;
 use core::cmp::PartialEq;
 use core::fmt::Debug;
 use core::marker::Copy;
-use core::num::Float;
 use core::ops::{Add, Sub, Mul, Div, Rem};
 use core::option::Option;
 use core::option::Option::{Some, None};

branches/try/src/librand/distributions/exponential.rs

@@ -10,6 +10,7 @@
 
 //! The exponential distribution.
 
+#[cfg(not(test))] // only necessary for no_std
 use FloatMath;
 
 use {Rng, Rand};

branches/try/src/librand/distributions/gamma.rs

@@ -13,6 +13,7 @@
 use self::GammaRepr::*;
 use self::ChiSquaredRepr::*;
 
+#[cfg(not(test))] // only necessary for no_std
 use FloatMath;
 
 use {Rng, Open01};

branches/try/src/librand/distributions/mod.rs

@@ -17,7 +17,9 @@
 //! internally. The `IndependentSample` trait is for generating values
 //! that do not need to record state.
 
+#[cfg(not(test))] // only necessary for no_std
 use core::num::Float;
+
 use core::marker::PhantomData;
 
 use {Rng, Rand};

branches/try/src/librand/distributions/normal.rs

@@ -10,6 +10,7 @@
 
 //! The normal and derived distributions.
 
+#[cfg(not(test))] // only necessary for no_std
 use FloatMath;
 
 use {Rng, Rand, Open01};

branches/try/src/librand/lib.rs

@@ -28,13 +28,13 @@
 #![unstable(feature = "rand",
             reason = "use `rand` from crates.io",
             issue = "27703")]
-#![feature(core_float)]
 #![feature(core_intrinsics)]
 #![feature(staged_api)]
 #![feature(step_by)]
 #![feature(custom_attribute)]
 #![allow(unused_attributes)]
 
+#![cfg_attr(not(test), feature(core_float))] // only necessary for no_std
 #![cfg_attr(test, feature(test, rand))]
 
 #![allow(deprecated)]

branches/try/src/librustc/dep_graph/dep_node.rs

@@ -59,11 +59,13 @@ pub enum DepNode<D: Clone + Debug> {
     TypeckItemBody(D),
     Dropck,
     DropckImpl(D),
+    UnusedTraitCheck,
     CheckConst(D),
     Privacy,
     IntrinsicCheck(D),
     MatchCheck(D),
     MirMapConstruction(D),
+    MirPass(D),
     MirTypeck(D),
     BorrowCheck(D),
     RvalueCheck(D),
@@ -164,6 +166,7 @@ impl<D: Clone + Debug> DepNode<D> {
             CheckEntryFn => Some(CheckEntryFn),
             Variance => Some(Variance),
             Dropck => Some(Dropck),
+            UnusedTraitCheck => Some(UnusedTraitCheck),
             Privacy => Some(Privacy),
             Reachability => Some(Reachability),
             DeadCheck => Some(DeadCheck),
@@ -186,6 +189,7 @@ impl<D: Clone + Debug> DepNode<D> {
             IntrinsicCheck(ref d) => op(d).map(IntrinsicCheck),
             MatchCheck(ref d) => op(d).map(MatchCheck),
             MirMapConstruction(ref d) => op(d).map(MirMapConstruction),
+            MirPass(ref d) => op(d).map(MirPass),
             MirTypeck(ref d) => op(d).map(MirTypeck),
             BorrowCheck(ref d) => op(d).map(BorrowCheck),
             RvalueCheck(ref d) => op(d).map(RvalueCheck),

branches/try/src/librustc/dep_graph/thread.rs

@@ -176,6 +176,9 @@ pub fn main(swap_in: Receiver<Vec<DepMessage>>,
                 DepMessage::Query => query_out.send(edges.query()).unwrap(),
             }
         }
-        swap_out.send(messages).unwrap();
+        if let Err(_) = swap_out.send(messages) {
+            // the receiver must have been dropped already
+            break;
+        }
     }
 }