---

yaml
---
r: 211903
b: refs/heads/auto
c: 53897ba
h: refs/heads/master
i:
  211901: 25bbc9f
  211899: 928e56d
  211895: 391ac66
  211887: 9cf86b3
  211871: f0c9d51
  211839: bb1818f
v: v3

Author: Ms2ger

[refs]

@@ -10,7 +10,7 @@ refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: 52e530af4cfe4a873cd27278ee3ddff66b6754e1
+refs/heads/auto: 53897baec87fae5cb918f8bb09c09d981bdd0684
 refs/heads/servo: af82457af293e2a842ba6b7759b70288da276167
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336

branches/auto/AUTHORS.txt

@@ -338,7 +338,7 @@ Hajime Morrita <[email protected]>
 Hanno Braun <[email protected]>
 Harry Marr <[email protected]>
 Heather <[email protected]>
-Heejong Ahn <[email protected]>
+Heejong Ahn <[email protected]
 Henrik Schopmans <[email protected]>
 Herman J. Radtke III <[email protected]>
 HeroesGrave <[email protected]>

branches/auto/configure

@@ -582,7 +582,6 @@ valopt sysconfdir "/etc" "install system configuration files"
 valopt datadir "${CFG_PREFIX}/share" "install data"
 valopt infodir "${CFG_PREFIX}/share/info" "install additional info"
 valopt llvm-root "" "set LLVM root"
-valopt python "" "set path to python"
 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
 valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path"
@@ -696,9 +695,7 @@ putvar CFG_BOOTSTRAP_KEY
 step_msg "looking for build programs"
 
 probe_need CFG_CURLORWGET  curl wget
-if [ -z "$CFG_PYTHON_PROVIDED" ]; then
-    probe_need CFG_PYTHON      python2.7 python2.6 python2 python
-fi
+probe_need CFG_PYTHON      python2.7 python2.6 python2 python
 
 python_version=$($CFG_PYTHON -V 2>&1)
 if [ $(echo $python_version | grep -c '^Python 2\.[4567]') -ne 1 ]; then
@@ -852,6 +849,13 @@ then
     putvar CFG_LOCAL_RUST_ROOT
 fi
 
+# Force freebsd to build with clang; gcc doesn't like us there
+if [ $CFG_OSTYPE = unknown-freebsd ]
+then
+    step_msg "on FreeBSD, forcing use of clang"
+    CFG_ENABLE_CLANG=1
+fi
+
 # Force bitrig to build with clang; gcc doesn't like us there
 if [ $CFG_OSTYPE = unknown-bitrig ]
 then
@@ -969,8 +973,8 @@ fi
 
 if [ ! -z "$CFG_ENABLE_CLANG" ]
 then
-    case "$CC" in
-        (''|*clang)
+    if [ -z "$CC" ] || [[ $CC == *clang ]]
+    then
         CFG_CLANG_VERSION=$($CFG_CC \
             --version \
             | grep version \
@@ -990,11 +994,9 @@ then
             err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
             ;;
         esac
-        ;;
-        (*)
+    else
         msg "skipping CFG_ENABLE_CLANG version check; provided CC=$CC"
-        ;;
-    esac
+    fi
 fi
 
 if [ ! -z "$CFG_ENABLE_CCACHE" ]

branches/auto/mk/docs.mk

@@ -265,7 +265,7 @@ endef
 $(foreach crate,$(CRATES),$(eval $(call DEF_LIB_DOC,$(crate))))
 
 COMPILER_DOC_TARGETS := $(CRATES:%=doc/%/index.html)
-ifdef CFG_ENABLE_COMPILER_DOCS
+ifdef CFG_COMPILER_DOCS
   DOC_TARGETS += $(COMPILER_DOC_TARGETS)
 else
   DOC_TARGETS += $(DOC_CRATES:%=doc/%/index.html)

branches/auto/src/compiletest/runtest.rs

@@ -24,6 +24,7 @@ use std::fmt;
 use std::fs::{self, File};
 use std::io::BufReader;
 use std::io::prelude::*;
+use std::iter::repeat;
 use std::net::TcpStream;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Output, ExitStatus};
@@ -927,12 +928,12 @@ fn check_forbid_output(props: &TestProps,
     }
 }
 
-fn check_expected_errors(expected_errors: Vec<errors::ExpectedError>,
+fn check_expected_errors(expected_errors: Vec<errors::ExpectedError> ,
                          testfile: &Path,
                          proc_res: &ProcRes) {
 
     // true if we found the error in question
-    let mut found_flags = vec![false; expected_errors.len()];
+    let mut found_flags: Vec<_> = repeat(false).take(expected_errors.len()).collect();
 
     if proc_res.status.success() {
         fatal("process did not return an error status");
@@ -953,10 +954,14 @@ fn check_expected_errors(expected_errors: Vec<errors::ExpectedError>,
         }
     }
 
-    // A multi-line error will have followup lines which start with a space
-    // or open paren.
+    // A multi-line error will have followup lines which will always
+    // start with one of these strings.
     fn continuation( line: &str) -> bool {
-        line.starts_with(" ") || line.starts_with("(")
+        line.starts_with(" expected") ||
+        line.starts_with("    found") ||
+        //                1234
+        // Should have 4 spaces: see issue 18946
+        line.starts_with("(")
     }
 
     // Scan and extract our error/warning messages,

branches/auto/src/doc/reference.md

@@ -1943,6 +1943,9 @@ macro scope.
 - `simd` - on certain tuple structs, derive the arithmetic operators, which
   lower to the target's SIMD instructions, if any; the `simd` feature gate
   is necessary to use this attribute.
+- `static_assert` - on statics whose type is `bool`, terminates compilation
+  with an error if it is not initialized to `true`. To use this, the `static_assert`
+  feature gate must be enabled.
 - `unsafe_no_drop_flag` - on structs, remove the flag that prevents
   destructors from being run twice. Destructors might be run multiple times on
   the same object with this attribute. To use this, the `unsafe_no_drop_flag` feature
@@ -2298,6 +2301,12 @@ The currently implemented features of the reference compiler are:
                  crate. Stability markers are also attributes: `#[stable]`,
                  `#[unstable]`, and `#[deprecated]` are the three levels.
 
+* `static_assert` - The `#[static_assert]` functionality is experimental and
+                    unstable. The attribute can be attached to a `static` of
+                    type `bool` and the compiler will error if the `bool` is
+                    `false` at compile time. This version of this functionality
+                    is unintuitive and suboptimal.
+
 * `start` - Allows use of the `#[start]` attribute, which changes the entry point
             into a Rust program. This capability, especially the signature for the
             annotated function, is subject to change.
@@ -3599,147 +3608,6 @@ The notation `&self` is a shorthand for `self: &Self`. In this case,
 in the impl, `Self` refers to the value of type `String` that is the
 receiver for a call to the method `make_string`.
 
-## Subtyping
-
-Subtyping is implicit and can occur at any stage in type checking or
-inference. Subtyping in Rust is very restricted and occurs only due to
-variance with respect to lifetimes and between types with higher ranked
-lifetimes. If we were to erase lifetimes from types, then the only subtyping
-would be due to type equality.
-
-Consider the following example: string literals always have `'static`
-lifetime. Nevertheless, we can assign `s` to `t`:
-
-```
-fn bar<'a>() {
-    let s: &'static str = "hi";
-    let t: &'a str = s;
-}
-```
-Since `'static` "lives longer" than `'a`, `&'static str` is a subtype of
-`&'a str`.
-
-## Type coercions
-
-Coercions are defined in [RFC401]. A coercion is implicit and has no syntax.
-
-[RFC401]: https://github.com/rust-lang/rfcs/blob/master/text/0401-coercions.md
-
-### Coercion sites
-
-A coercion can only occur at certain coercion sites in a program; these are
-typically places where the desired type is explicit or can be dervied by
-propagation from explicit types (without type inference). Possible coercion
-sites are:
-
-* `let` statements where an explicit type is given.
-
-    In `let _: U = e;`, `e` is coerced to have type `U`.
-
-* `static` and `const` statements (similar to `let` statements).
-
-* arguments for function calls.
-
-    The value being coerced is the
-    actual parameter and it is coerced to the type of the formal parameter. For
-    example, let `foo` be defined as `fn foo(x: U) { ... }` and call it as
-    `foo(e);`. Then `e` is coerced to have type `U`;
-
-* instantiations of struct or variant fields.
-
-    Assume we have a `struct
-    Foo { x: U }` and instantiate it as `Foo { x: e }`. Then `e` is coerced to
-    have type `U`.
-
-* function results (either the final line of a block if it is not semicolon
-terminated or any expression in a `return` statement).
-
-    In `fn foo() -> U { e }`, `e` is coerced to to have type `U`.
-
-If the expression in one of these coercion sites is a coercion-propagating
-expression, then the relevant sub-expressions in that expression are also
-coercion sites. Propagation recurses from these new coercion sites.
-Propagating expressions and their relevant sub-expressions are:
-
-* array literals, where the array has type `[U; n]`. Each sub-expression in
-the array literal is a coercion site for coercion to type `U`.
-
-* array literals with repeating syntax, where the array has type `[U; n]`. The
-repeated sub-expression is a coercion site for coercion to type `U`.
-
-* tuples, where a tuple is a coercion site to type `(U_0, U_1, ..., U_n)`.
-Each sub-expression is a coercion site to the respective type, e.g. the
-zeroth sub-expression is a coercion site to type `U_0`.
-
-* parenthesised sub-expressions (`(e)`). If the expression has type `U`, then
-the sub-expression is a coercion site to `U`.
-
-* blocks. If a block has type `U`, then the last expression in the block (if
-it is not semicolon-terminated) is a coercion site to `U`. This includes
-blocks which are part of control flow statements, such as `if`/`else`, if
-the block has a known type.
-
-### Coercion types
-
-Coercion is allowed between the following types:
-
-* `T` to `U` if `T` is a subtype of `U` (*reflexive case*).
-
-* `T_1` to `T_3` where `T_1` coerces to `T_2` and `T_2` coerces to `T_3`
-(*transitive case*).
-
-    Note that this is not fully supported yet
-
-* `&mut T` to `&T`.
-
-* `*mut T` to `*const T`.
-
-* `&T` to `*const T`.
-
-* `&mut T` to `*mut T`.
-
-* `&T` to `&U` if `T` implements `Deref<Target = U>`. For example:
-
-```rust
-use std::ops::Deref;
-
-struct CharContainer {
-    value: char
-}
-
-impl Deref for CharContainer {
-    type Target = char;
-
-    fn deref<'a>(&'a self) -> &'a char {
-        &self.value
-    }
-}
-
-fn foo(arg: &char) {}
-
-fn main() {
-    let x = &mut CharContainer { value: 'y' };
-    foo(x); //&mut CharContainer is coerced to &char.
-}
-```
-* `&mut T` to `&mut U` if `T` implements `DerefMut<Target = U>`.
-
-* TyCtor(`T`) to TyCtor(coerce_inner(`T`)), where TyCtor(`T`) is one of
-    - `&T`
-    - `&mut T`
-    - `*const T`
-    - `*mut T`
-    - `Box<T>`
-
-    and where
-    - coerce_inner(`[T, ..n]`) = `[T]`
-    - coerce_inner(`T`) = `U` where `T` is a concrete type which implements the
-    trait `U`.
-
-    In the future, coerce_inner will be recursively extended to tuples and
-    structs. In addition, coercions from sub-traits to super-traits will be
-    added. See [RFC401] for more details.
-
 # Special traits
 
 Several traits define special evaluation behavior.

branches/auto/src/doc/trpl/mutability.md

@@ -159,7 +159,7 @@ b.x = 10; // error: cannot assign to immutable field `b.x`
 
 [struct]: structs.html
 
-However, by using [`Cell<T>`][cell], you can emulate field-level mutability:
+However, by using `Cell<T>`, you can emulate field-level mutability:
 
 ```rust
 use std::cell::Cell;
@@ -176,6 +176,4 @@ point.y.set(7);
 println!("y: {:?}", point.y);
 ```
 
-[cell]: ../std/cell/struct.Cell.html
-
 This will print `y: Cell { value: 7 }`. We’ve successfully updated `y`.

branches/auto/src/libcollections/linked_list.rs

@@ -106,14 +106,16 @@ impl<T> Rawlink<T> {
     /// Convert the `Rawlink` into an Option value
     fn resolve_immut<'a>(&self) -> Option<&'a T> {
         unsafe {
-            self.p.as_ref()
+            mem::transmute(self.p.as_ref())
         }
     }
 
     /// Convert the `Rawlink` into an Option value
     fn resolve<'a>(&mut self) -> Option<&'a mut T> {
-        unsafe {
-            self.p.as_mut()
+        if self.p.is_null() {
+            None
+        } else {
+            Some(unsafe { mem::transmute(self.p) })
         }
     }
 

branches/auto/src/libcore/result.rs

@@ -223,9 +223,7 @@
 //! }
 //! ```
 //!
-//! `try!` is imported by the prelude and is available everywhere, but it can only
-//! be used in functions that return `Result` because of the early return of
-//! `Err` that it provides.
+//! `try!` is imported by the prelude, and is available everywhere.
 
 #![stable(feature = "rust1", since = "1.0.0")]
 

branches/auto/src/librustc/metadata/csearch.rs

@@ -13,7 +13,6 @@
 use metadata::common::*;
 use metadata::cstore;
 use metadata::decoder;
-use middle::def;
 use middle::lang_items;
 use middle::ty;
 
@@ -114,12 +113,6 @@ pub fn maybe_get_item_ast<'tcx>(tcx: &ty::ctxt<'tcx>, def: ast::DefId,
     decoder::maybe_get_item_ast(&*cdata, tcx, def.node, decode_inlined_item)
 }
 
-pub fn get_enum_variant_defs(cstore: &cstore::CStore, enum_id: ast::DefId)
-                             -> Vec<(def::Def, ast::Name, ast::Visibility)> {
-    let cdata = cstore.get_crate_data(enum_id.krate);
-    decoder::get_enum_variant_defs(&*cstore.intr, &*cdata, enum_id.node)
-}
-
 pub fn get_enum_variants<'tcx>(tcx: &ty::ctxt<'tcx>, def: ast::DefId)
                                -> Vec<Rc<ty::VariantInfo<'tcx>>> {
     let cstore = &tcx.sess.cstore;

branches/auto/src/librustc/metadata/decoder.rs

@@ -730,24 +730,6 @@ pub fn maybe_get_item_ast<'tcx>(cdata: Cmd, tcx: &ty::ctxt<'tcx>, id: ast::NodeI
     }
 }
 
-pub fn get_enum_variant_defs(intr: &IdentInterner,
-                             cdata: Cmd,
-                             id: ast::NodeId)
-                             -> Vec<(def::Def, ast::Name, ast::Visibility)> {
-    let data = cdata.data();
-    let items = reader::get_doc(rbml::Doc::new(data), tag_items);
-    let item = find_item(id, items);
-    enum_variant_ids(item, cdata).map(|did| {
-        let item = find_item(did.node, items);
-        let name = item_name(intr, item);
-        let visibility = item_visibility(item);
-        match item_to_def_like(cdata, item, did) {
-            DlDef(def @ def::DefVariant(..)) => (def, name, visibility),
-            _ => unreachable!()
-        }
-    }).collect()
-}
-
 pub fn get_enum_variants<'tcx>(intr: Rc<IdentInterner>, cdata: Cmd, id: ast::NodeId,
                                tcx: &ty::ctxt<'tcx>) -> Vec<Rc<ty::VariantInfo<'tcx>>> {
     let data = cdata.data();