---

yaml
---
r: 134526
b: refs/heads/try
c: 53c3b83
h: refs/heads/master
v: v3

Author: saysjonathan

[refs]

@@ -2,7 +2,7 @@
 refs/heads/master: 58413c09cd52ea4005d6ea7733ba1fb3a8f36589
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 437179ed8bf7f7672f84b19265df1ce569e70490
-refs/heads/try: e65f6714b02b01b7a9748b894a9bfaac2c459753
+refs/heads/try: 53c3b830704f76e2a41fa5e68770f060362c5596
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
 refs/heads/try2: 147ecfdd8221e4a4d4e090486829a06da1e0ca3c

branches/try/configure

@@ -636,7 +636,7 @@ then
             # check that gcc, cc and g++ all point to the same compiler.
             # note that for xcode 5, g++ points to clang, not clang++
             if !((chk_cc gcc clang  && chk_cc g++ clang) ||
-                (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))) then
+                (chk_cc gcc gcc  &&( chk_cc g++ g++ || chk g++ gcc))); then
                 err "the gcc and g++ in your path point to different compilers.
     Check which versions are in your path with gcc --version and g++ --version.
     To resolve this problem, either fix your PATH  or run configure with --enable-clang"

branches/try/mk/crates.mk

@@ -59,7 +59,7 @@ CRATES := $(TARGET_CRATES) $(HOST_CRATES)
 TOOLS := compiletest rustdoc rustc
 
 DEPS_core :=
-DEPS_rlibc := core
+DEPS_rlibc :=
 DEPS_unicode := core
 DEPS_alloc := core libc native:jemalloc
 DEPS_debug := std

branches/try/src/compiletest/compiletest.rs

@@ -259,7 +259,7 @@ pub fn run_tests(config: &Config) {
     // parallel (especially when we have lots and lots of child processes).
     // For context, see #8904
     io::test::raise_fd_limit();
-    let res = test::run_tests_console(&opts, tests.into_iter().collect());
+    let res = test::run_tests_console(&opts, tests.move_iter().collect());
     match res {
         Ok(true) => {}
         Ok(false) => fail!("Some tests failed"),
@@ -400,4 +400,4 @@ fn extract_gdb_version(full_version_line: Option<String>) -> Option<String> {
         },
         _ => None
     }
-}
+}

branches/try/src/compiletest/procsrv.rs

@@ -40,7 +40,7 @@ pub fn run(lib_path: &str,
     let mut cmd = Command::new(prog);
     cmd.args(args);
     add_target_env(&mut cmd, lib_path, aux_path);
-    for (key, val) in env.into_iter() {
+    for (key, val) in env.move_iter() {
         cmd.env(key, val);
     }
 
@@ -72,7 +72,7 @@ pub fn run_background(lib_path: &str,
     let mut cmd = Command::new(prog);
     cmd.args(args);
     add_target_env(&mut cmd, lib_path, aux_path);
-    for (key, val) in env.into_iter() {
+    for (key, val) in env.move_iter() {
         cmd.env(key, val);
     }
 

branches/try/src/compiletest/runtest.rs

@@ -768,7 +768,7 @@ fn cleanup_debug_info_options(options: &Option<String>) -> Option<String> {
         "--debuginfo".to_string()
     ];
     let new_options =
-        split_maybe_args(options).into_iter()
+        split_maybe_args(options).move_iter()
                                  .filter(|x| !options_to_remove.contains(x))
                                  .collect::<Vec<String>>()
                                  .connect(" ");
@@ -1461,7 +1461,7 @@ fn _arm_exec_compiled_test(config: &Config,
 
     // run test via adb_run_wrapper
     runargs.push("shell".to_string());
-    for (key, val) in env.into_iter() {
+    for (key, val) in env.move_iter() {
         runargs.push(format!("{}={}", key, val));
     }
     runargs.push(format!("{}/adb_run_wrapper.sh", config.adb_test_dir));

branches/try/src/doc/guide-tasks.md

@@ -238,7 +238,7 @@ fn main() {
     let mut futures = Vec::from_fn(1000, |ind| Future::spawn( proc() { partial_sum(ind) }));
 
     let mut final_res = 0f64;
-    for ft in futures.iter_mut()  {
+    for ft in futures.mut_iter()  {
         final_res += ft.get();
     }
     println!("π^2/6 is not far from : {}", final_res);

branches/try/src/doc/guide-unsafe.md

@@ -461,12 +461,11 @@ fn start(_argc: int, _argv: *const *const u8) -> int {
     0
 }
 
-// These functions and traits are used by the compiler, but not
+// These functions are invoked by the compiler, but not
 // for a bare-bones hello world. These are normally
 // provided by libstd.
 #[lang = "stack_exhausted"] extern fn stack_exhausted() {}
 #[lang = "eh_personality"] extern fn eh_personality() {}
-#[lang = "sized"] trait Sized { }
 # // fn main() {} tricked you, rustdoc!
 ```
 
@@ -489,14 +488,13 @@ pub extern fn main(argc: int, argv: *const *const u8) -> int {
 
 #[lang = "stack_exhausted"] extern fn stack_exhausted() {}
 #[lang = "eh_personality"] extern fn eh_personality() {}
-#[lang = "sized"] trait Sized { }
 # // fn main() {} tricked you, rustdoc!
 ```
 
 
 The compiler currently makes a few assumptions about symbols which are available
 in the executable to call. Normally these functions are provided by the standard
-xlibrary, but without it you must define your own.
+library, but without it you must define your own.
 
 The first of these two functions, `stack_exhausted`, is invoked whenever stack
 overflow is detected.  This function has a number of restrictions about how it
@@ -510,12 +508,6 @@ mechanisms of the compiler. This is often mapped to GCC's personality function
 information), but crates which do not trigger failure can be assured that this
 function is never called.
 
-The final item in the example is a trait called `Sized`. This a trait
-that represents data of a known static size: it is integral to the
-Rust type system, and so the compiler expects the standard library to
-provide it. Since you are not using the standard library, you have to
-provide it yourself.
-
 ## Using libcore
 
 > **Note**: the core library's structure is unstable, and it is recommended to
@@ -694,7 +686,6 @@ fn main(argc: int, argv: *const *const u8) -> int {
 
 #[lang = "stack_exhausted"] extern fn stack_exhausted() {}
 #[lang = "eh_personality"] extern fn eh_personality() {}
-#[lang = "sized"] trait Sized {}
 ```
 
 Note the use of `abort`: the `exchange_malloc` lang item is assumed to

branches/try/src/doc/guide.md

@@ -152,7 +152,7 @@ Save the file, and then type this into your terminal window:
 
 ```{bash}
 $ rustc main.rs
-$ ./main # or main.exe on Windows
+$ ./hello_world # or hello_world.exe on Windows
 Hello, world!
 ```
 
@@ -164,7 +164,7 @@ fn main() {
 }
 ```
 
-These lines define a **function** in Rust. The `main` function is special:
+These two lines define a **function** in Rust. The `main` function is special:
 it's the beginning of every Rust program. The first line says "I'm declaring a
 function named `main`, which takes no arguments and returns nothing." If there
 were arguments, they would go inside the parentheses (`(` and `)`), and because
@@ -185,8 +185,8 @@ Next up is this line:
 This line does all of the work in our little program. There are a number of
 details that are important here. The first is that it's indented with four
 spaces, not tabs. Please configure your editor of choice to insert four spaces
-with the tab key. We provide some [sample configurations for various
-editors](https://github.com/rust-lang/rust/tree/master/src/etc).
+with the tab key. We provide some sample configurations for various editors
+[here](https://github.com/rust-lang/rust/tree/master/src/etc).
 
 The second point is the `println!()` part. This is calling a Rust **macro**,
 which is how metaprogramming is done in Rust. If it were a function instead, it
@@ -232,10 +232,10 @@ main.exe  main.rs
 ```
 
 There are now two files: our source code, with the `.rs` extension, and the
-executable (`main.exe` on Windows, `main` everywhere else)
+executable (`hello_world.exe` on Windows, `hello_world` everywhere else)
 
 ```{bash}
-$ ./main  # or main.exe on Windows
+$ ./hello_world  # or hello_world.exe on Windows
 ```
 
 This prints out our `Hello, world!` text to our terminal.
@@ -392,10 +392,14 @@ By the way, in these examples, `i` indicates that the number is an integer.
 
 Rust is a statically typed language, which means that we specify our types up
 front. So why does our first example compile? Well, Rust has this thing called
-"type inference." If it can figure out what the type of something is, Rust
+"[Hindley-Milner type
+inference](http://en.wikipedia.org/wiki/Hindley%E2%80%93Milner_type_system)",
+named after some really smart type theorists. If you clicked that link, don't
+be scared: what this means for you is that Rust will attempt to infer the types
+in your program, and it's pretty good at it. If it can infer the type, Rust
 doesn't require you to actually type it out.
 
-We can add the type if we want to, though. Types come after a colon (`:`):
+We can add the type if we want to. Types come after a colon (`:`):
 
 ```{rust}
 let x: int = 5;
@@ -1277,15 +1281,15 @@ two main looping constructs: `for` and `while`.
 
 The `for` loop is used to loop a particular number of times. Rust's `for` loops
 work a bit differently than in other systems languages, however. Rust's `for`
-loop doesn't look like this "C style" `for` loop:
+loop doesn't look like this C `for` loop:
 
-```{c}
+```{ignore,c}
 for (x = 0; x < 10; x++) {
     printf( "%d\n", x );
 }
 ```
 
-Instead, it looks like this:
+It looks like this:
 
 ```{rust}
 for x in range(0i, 10i) {
@@ -1308,13 +1312,14 @@ valid for the loop body. Once the body is over, the next value is fetched from
 the iterator, and we loop another time. When there are no more values, the
 `for` loop is over.
 
-In our example, `range` is a function that takes a start and an end position,
-and gives an iterator over those values. The upper bound is exclusive, though,
-so our loop will print `0` through `9`, not `10`.
+In our example, the `range` function is a function, provided by Rust, that
+takes a start and an end position, and gives an iterator over those values. The
+upper bound is exclusive, though, so our loop will print `0` through `9`, not
+`10`.
 
 Rust does not have the "C style" `for` loop on purpose. Manually controlling
 each element of the loop is complicated and error prone, even for experienced C
-developers.
+developers. 
 
 We'll talk more about `for` when we cover **iterator**s, later in the Guide.
 
@@ -4268,7 +4273,7 @@ very common with iterators: we can ignore unnecessary bounds checks, but still
 know that we're safe.
 
 There's another detail here that's not 100% clear because of how `println!`
-works. `num` is actually of type `&int`. That is, it's a reference to an `int`,
+works. `num` is actually of type `&int`, that is, it's a reference to an `int`,
 not an `int` itself. `println!` handles the dereferencing for us, so we don't
 see it. This code works fine too:
 

branches/try/src/doc/index.md

@@ -86,10 +86,10 @@ There are questions that are asked quite often, and so we've made FAQs for them:
 
 # The standard library
 
-We have [API documentation for the entire standard
-library](std/index.html). There's a list of crates on the left with more
-specific sections, or you can use the search bar at the top to search for
-something if you know its name.
+You can find function-level documentation for the entire standard library
+[here](std/index.html). There's a list of crates on the left with more specific
+sections, or you can use the search bar at the top to search for something if
+you know its name.
 
 # External documentation
 

branches/try/src/doc/rust.md

@@ -3698,7 +3698,7 @@ There are two varieties of pointer in Rust:
     they exist to support interoperability with foreign code,
     and writing performance-critical or low-level functions.
 
-The standard library contains additional 'smart pointer' types beyond references
+The standard library contains addtional 'smart pointer' types beyond references
 and raw pointers.
 
 ### Function types

branches/try/src/liballoc/heap.rs

@@ -8,9 +8,11 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// FIXME: #13994: port to the sized deallocation API when available
 // FIXME: #13996: mark the `allocate` and `reallocate` return value as `noalias`
+//                and `nonnull`
 
-#[cfg(stage0, not(test))] use core::raw;
+#[cfg(not(test))] use core::raw;
 #[cfg(stage0, not(test))] use util;
 
 /// Returns a pointer to `size` bytes of memory.
@@ -86,19 +88,18 @@ pub fn stats_print() {
     imp::stats_print();
 }
 
-/// An arbitrary non-null address to represent zero-size allocations.
-///
-/// This preserves the non-null invariant for types like `Box<T>`. The address may overlap with
-/// non-zero-size memory allocations.
-pub static EMPTY: *mut () = 0x1 as *mut ();
+// The compiler never calls `exchange_free` on Box<ZeroSizeType>, so zero-size
+// allocations can point to this `static`. It would be incorrect to use a null
+// pointer, due to enums assuming types like unique pointers are never null.
+pub static mut EMPTY: uint = 12345;
 
 /// The allocator for unique pointers.
 #[cfg(not(test))]
 #[lang="exchange_malloc"]
 #[inline]
 unsafe fn exchange_malloc(size: uint, align: uint) -> *mut u8 {
     if size == 0 {
-        EMPTY as *mut u8
+        &EMPTY as *const uint as *mut u8
     } else {
         allocate(size, align)
     }
@@ -111,6 +112,7 @@ unsafe fn exchange_free(ptr: *mut u8, size: uint, align: uint) {
     deallocate(ptr, size, align);
 }
 
+// FIXME: #7496
 #[cfg(stage0, not(test))]
 #[lang="closure_exchange_malloc"]
 #[inline]
@@ -126,6 +128,21 @@ unsafe fn closure_exchange_malloc(drop_glue: fn(*mut u8), size: uint,
     alloc as *mut u8
 }
 
+// FIXME: #7496
+#[cfg(not(stage0), not(test))]
+#[lang="closure_exchange_malloc"]
+#[inline]
+#[allow(deprecated)]
+unsafe fn closure_exchange_malloc(drop_glue: fn(*mut u8), size: uint,
+                                  align: uint) -> *mut u8 {
+    let p = allocate(size, align);
+
+    let alloc = p as *mut raw::Box<()>;
+    (*alloc).drop_glue = drop_glue;
+
+    alloc as *mut u8
+}
+
 // The minimum alignment guaranteed by the architecture. This value is used to
 // add fast paths for low alignment values. In practice, the alignment is a
 // constant at the call site and the branch will be optimized out.
@@ -140,7 +157,7 @@ static MIN_ALIGN: uint = 16;
 #[cfg(jemalloc)]
 mod imp {
     use core::option::{None, Option};
-    use core::ptr::{RawPtr, null_mut, null};
+    use core::ptr::{RawPtr, mut_null, null};
     use core::num::Int;
     use libc::{c_char, c_int, c_void, size_t};
     use super::MIN_ALIGN;
@@ -230,14 +247,15 @@ mod imp {
 
     pub fn stats_print() {
         unsafe {
-            je_malloc_stats_print(None, null_mut(), null())
+            je_malloc_stats_print(None, mut_null(), null())
         }
     }
 }
 
 #[cfg(not(jemalloc), unix)]
 mod imp {
     use core::cmp;
+    use core::mem;
     use core::ptr;
     use libc;
     use libc_heap;

branches/try/src/liballoc/libc_heap.rs

@@ -12,15 +12,15 @@
 //! The global (exchange) heap.
 
 use libc::{c_void, size_t, free, malloc, realloc};
-use core::ptr::{RawPtr, null_mut};
+use core::ptr::{RawPtr, mut_null};
 
 /// A wrapper around libc::malloc, aborting on out-of-memory.
 #[inline]
 pub unsafe fn malloc_raw(size: uint) -> *mut u8 {
     // `malloc(0)` may allocate, but it may also return a null pointer
     // http://pubs.opengroup.org/onlinepubs/9699919799/functions/malloc.html
     if size == 0 {
-        null_mut()
+        mut_null()
     } else {
         let p = malloc(size as size_t);
         if p.is_null() {
@@ -37,7 +37,7 @@ pub unsafe fn realloc_raw(ptr: *mut u8, size: uint) -> *mut u8 {
     // http://pubs.opengroup.org/onlinepubs/9699919799/functions/realloc.html
     if size == 0 {
         free(ptr as *mut c_void);
-        null_mut()
+        mut_null()
     } else {
         let p = realloc(ptr as *mut c_void, size as size_t);
         if p.is_null() {

branches/try/src/libarena/lib.rs

@@ -448,7 +448,7 @@ impl<T> TypedArena<T> {
     #[inline]
     pub fn with_capacity(capacity: uint) -> TypedArena<T> {
         unsafe {
-            let chunk = TypedArenaChunk::<T>::new(ptr::null_mut(), capacity);
+            let chunk = TypedArenaChunk::<T>::new(ptr::mut_null(), capacity);
             TypedArena {
                 ptr: Cell::new((*chunk).start() as *const T),
                 end: Cell::new((*chunk).end() as *const T),