---

yaml
---
r: 277652
b: refs/heads/try
c: 5158f3b
h: refs/heads/master

Author: bors

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 6dbb0e86aec11050480beb76eade6fb805010ba7
 refs/heads/snap-stage3: 235d77457d80b549dad3ac36d94f235208a1eafb
-refs/heads/try: 238e4ee104179c5a6beb5bb25ffe28a3fd77bff5
+refs/heads/try: 5158f3b282287624232ac6935569e440bb182664
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try/mk/debuggers.mk

@@ -41,10 +41,13 @@ DEBUGGER_BIN_SCRIPTS_LLDB_ABS=\
 
 
 ## ALL ##
-DEBUGGER_RUSTLIB_ETC_SCRIPTS_ALL=$(DEBUGGER_RUSTLIB_ETC_SCRIPTS_GDB) \
-                                 $(DEBUGGER_RUSTLIB_ETC_SCRIPTS_LLDB)
-DEBUGGER_RUSTLIB_ETC_SCRIPTS_ALL_ABS=$(DEBUGGER_RUSTLIB_ETC_SCRIPTS_GDB_ABS) \
-                                     $(DEBUGGER_RUSTLIB_ETC_SCRIPTS_LLDB_ABS)
+DEBUGGER_RUSTLIB_ETC_SCRIPTS_ALL=gdb_load_rust_pretty_printers.py \
+                                 gdb_rust_pretty_printing.py \
+                                 lldb_rust_formatters.py \
+                                 debugger_pretty_printers_common.py
+DEBUGGER_RUSTLIB_ETC_SCRIPTS_ALL_ABS=\
+    $(foreach script,$(DEBUGGER_RUSTLIB_ETC_SCRIPTS_ALL), \
+        $(CFG_SRC_DIR)src/etc/$(script))
 DEBUGGER_BIN_SCRIPTS_ALL=$(DEBUGGER_BIN_SCRIPTS_GDB) \
                          $(DEBUGGER_BIN_SCRIPTS_LLDB)
 DEBUGGER_BIN_SCRIPTS_ALL_ABS=$(DEBUGGER_BIN_SCRIPTS_GDB_ABS) \

branches/try/mk/main.mk

@@ -390,7 +390,7 @@ endif
 # This 'function' will determine which debugger scripts to copy based on a
 # target triple. See debuggers.mk for more information.
 TRIPLE_TO_DEBUGGER_SCRIPT_SETTING=\
- $(if $(findstring windows,$(1)),none,$(if $(findstring darwin,$(1)),lldb,gdb))
+ $(if $(findstring windows-msvc,$(1)),none,all)
 
 STAGES = 0 1 2 3
 

branches/try/mk/tests.mk

@@ -636,11 +636,11 @@ 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 '$$(CC_$(3))' \
-	--cxx '$$(CXX_$(3))' \
-	--cflags "$$(CFG_GCCISH_CFLAGS_$(3))" \
-	--llvm-components "$$(LLVM_ALL_COMPONENTS_$(3))" \
-	--llvm-cxxflags "$$(LLVM_CXXFLAGS_$(3))" \
+	--cc '$$(CC_$(2))' \
+	--cxx '$$(CXX_$(2))' \
+	--cflags "$$(CFG_GCCISH_CFLAGS_$(2))" \
+	--llvm-components "$$(LLVM_ALL_COMPONENTS_$(2))" \
+	--llvm-cxxflags "$$(LLVM_CXXFLAGS_$(2))" \
         $$(CTEST_TESTARGS)
 
 ifdef CFG_VALGRIND_RPASS

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

@@ -217,23 +217,23 @@ pub fn debugger_scripts(build: &Build,
         t!(fs::create_dir_all(&dst));
         install(&build.src.join("src/etc/").join(file), &dst, 0o644);
     };
-    if host.contains("windows") {
+    if host.contains("windows-msvc") {
         // no debugger scripts
-    } else if host.contains("darwin") {
-        // lldb debugger scripts
-        install(&build.src.join("src/etc/rust-lldb"), &sysroot.join("bin"),
-                0o755);
-
-        cp_debugger_script("lldb_rust_formatters.py");
-        cp_debugger_script("debugger_pretty_printers_common.py");
     } else {
+        cp_debugger_script("debugger_pretty_printers_common.py");
+
         // gdb debugger scripts
         install(&build.src.join("src/etc/rust-gdb"), &sysroot.join("bin"),
                 0o755);
 
         cp_debugger_script("gdb_load_rust_pretty_printers.py");
         cp_debugger_script("gdb_rust_pretty_printing.py");
-        cp_debugger_script("debugger_pretty_printers_common.py");
+
+        // lldb debugger scripts
+        install(&build.src.join("src/etc/rust-lldb"), &sysroot.join("bin"),
+                0o755);
+
+        cp_debugger_script("lldb_rust_formatters.py");
     }
 }
 

branches/try/src/doc/book/getting-started.md

@@ -8,7 +8,7 @@ we’ll talk about Cargo, Rust’s build system and package manager.
 
 The first step to using Rust is to install it. Generally speaking, you’ll need
 an Internet connection to run the commands in this section, as we’ll be
-downloading Rust from the internet.
+downloading Rust from the Internet.
 
 We’ll be showing off a number of commands using a terminal, and those lines all
 start with `$`. We don't need to type in the `$`s, they are there to indicate
@@ -399,13 +399,13 @@ Let’s convert the Hello World program to Cargo. To Cargo-fy a project, you nee
 to do three things:
 
 1. Put your source file in the right directory.
-2. Get rid of the old executable (`main.exe` on Windows, `main` everywhere else)
-   and make a new one.
+2. Get rid of the old executable (`main.exe` on Windows, `main` everywhere
+   else).
 3. Make a Cargo configuration file.
 
 Let's get started!
 
-### Creating a new Executable and Source Directory
+### Creating a Source Directory and Removing the Old Executable
 
 First, go back to your terminal, move to your *hello_world* directory, and
 enter the following commands:

branches/try/src/libcollections/fmt.rs

@@ -333,7 +333,7 @@
 //! precision := count | '*'
 //! type := identifier | ''
 //! count := parameter | integer
-//! parameter := integer '$'
+//! parameter := argument '$'
 //! ```
 //!
 //! # Formatting Parameters
@@ -403,11 +403,12 @@
 //! println!("Hello {:5}!", "x");
 //! println!("Hello {:1$}!", "x", 5);
 //! println!("Hello {1:0$}!", 5, "x");
+//! println!("Hello {:width$}!", "x", width = 5);
 //! ```
 //!
 //! Referring to an argument with the dollar syntax does not affect the "next
-//! argument" counter, so it's usually a good idea to refer to all arguments by
-//! their position explicitly.
+//! argument" counter, so it's usually a good idea to refer to arguments by
+//! position, or use named arguments.
 //!
 //! ## Precision
 //!
@@ -426,7 +427,7 @@
 //!
 //!    the integer `N` itself is the precision.
 //!
-//! 2. An integer followed by dollar sign `.N$`:
+//! 2. An integer or name followed by dollar sign `.N$`:
 //!
 //!    use format *argument* `N` (which must be a `usize`) as the precision.
 //!
@@ -456,6 +457,10 @@
 //! // Hello {next arg (x)} is {arg 2 (0.01) with precision
 //! //                          specified in its predecessor (5)}
 //! println!("Hello {} is {2:.*}",   "x", 5, 0.01);
+//!
+//! // Hello {next arg (x)} is {arg "number" (0.01) with precision specified
+//! //                          in arg "prec" (5)}
+//! println!("Hello {} is {number:.prec$}", "x", prec = 5, number = 0.01);
 //! ```
 //!
 //! All print the same thing:

branches/try/src/libcore/cell.rs

@@ -232,6 +232,18 @@ impl<T:Copy> Cell<T> {
     pub fn as_unsafe_cell(&self) -> &UnsafeCell<T> {
         &self.value
     }
+
+    /// Returns a mutable reference to the underlying data.
+    ///
+    /// This call borrows `Cell` mutably (at compile-time) which guarantees
+    /// that we possess the only reference.
+    #[inline]
+    #[unstable(feature = "cell_get_mut", issue = "33444")]
+    pub fn get_mut(&mut self) -> &mut T {
+        unsafe {
+            &mut *self.value.get()
+        }
+    }
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -455,6 +467,18 @@ impl<T: ?Sized> RefCell<T> {
     pub unsafe fn as_unsafe_cell(&self) -> &UnsafeCell<T> {
         &self.value
     }
+
+    /// Returns a mutable reference to the underlying data.
+    ///
+    /// This call borrows `RefCell` mutably (at compile-time) so there is no
+    /// need for dynamic checks.
+    #[inline]
+    #[unstable(feature = "cell_get_mut", issue="33444")]
+    pub fn get_mut(&mut self) -> &mut T {
+        unsafe {
+            &mut *self.value.get()
+        }
+    }
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]

branches/try/src/libcore/mem.rs

@@ -110,6 +110,7 @@ pub use intrinsics::transmute;
 ///     }
 /// }
 /// ```
+#[inline]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub fn forget<T>(t: T) {
     unsafe { intrinsics::forget(t) }

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

@@ -275,6 +275,15 @@ macro_rules! wrapping_impl {
                 *self = *self & other;
             }
         }
+
+        #[stable(feature = "wrapping_neg", since = "1.10.0")]
+        impl Neg for Wrapping<$t> {
+            type Output = Self;
+            #[inline(always)]
+            fn neg(self) -> Self {
+                Wrapping(0) - self
+            }
+        }
     )*)
 }
 

branches/try/src/librustc_borrowck/diagnostics.rs

@@ -314,6 +314,82 @@ let c = &i; // still ok!
 ```
 "##,
 
+E0501: r##"
+This error indicates that a mutable variable is being used while it is still
+captured by a closure. Because the closure has borrowed the variable, it is not
+available for use until the closure goes out of scope.
+
+Note that a capture will either move or borrow a variable, but in this
+situation, the closure is borrowing the variable. Take a look at
+http://rustbyexample.com/fn/closures/capture.html for more information about
+capturing.
+
+Example of erroneous code:
+
+```compile_fail
+fn inside_closure(x: &mut i32) {
+    // Actions which require unique access
+}
+
+fn outside_closure(x: &mut i32) {
+    // Actions which require unique access
+}
+
+fn foo(a: &mut i32) {
+    let bar = || {
+        inside_closure(a)
+    };
+    outside_closure(a); // error: cannot borrow `*a` as mutable because previous
+                        //        closure requires unique access.
+}
+```
+
+To fix this error, you can place the closure in its own scope:
+
+```
+fn inside_closure(x: &mut i32) {}
+fn outside_closure(x: &mut i32) {}
+
+fn foo(a: &mut i32) {
+    {
+        let bar = || {
+            inside_closure(a)
+        };
+    } // borrow on `a` ends.
+    outside_closure(a); // ok!
+}
+```
+
+Or you can pass the variable as a parameter to the closure:
+
+```
+fn inside_closure(x: &mut i32) {}
+fn outside_closure(x: &mut i32) {}
+
+fn foo(a: &mut i32) {
+    let bar = |s: &mut i32| {
+        inside_closure(s)
+    };
+    outside_closure(a);
+    bar(a);
+}
+```
+
+It may be possible to define the closure later:
+
+```
+fn inside_closure(x: &mut i32) {}
+fn outside_closure(x: &mut i32) {}
+
+fn foo(a: &mut i32) {
+    outside_closure(a);
+    let bar = || {
+        inside_closure(a)
+    };
+}
+```
+"##,
+
 E0507: r##"
 You tried to move out of a value which was borrowed. Erroneous code example:
 
@@ -436,7 +512,6 @@ register_diagnostics! {
     E0388, // {} in a static location
     E0389, // {} in a `&` reference
     E0500, // closure requires unique access to `..` but .. is already borrowed
-    E0501, // cannot borrow `..`.. as .. because previous closure requires unique access
     E0502, // cannot borrow `..`.. as .. because .. is also borrowed as ...
     E0503, // cannot use `..` because it was mutably borrowed
     E0504, // cannot move `..` into closure because it is borrowed