---

yaml
---
r: 235046
b: refs/heads/stable
c: 599bf45
h: refs/heads/master
v: v3

Author: tbelaire

[refs]

@@ -29,7 +29,7 @@ refs/heads/tmp: afae2ff723393b3ab4ccffef6ac7c6d1809e2da0
 refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f
 refs/tags/homu-tmp: f859507de8c410b648d934d8f5ec1c52daac971d
 refs/tags/1.0.0-beta: 8cbb92b53468ee2b0c2d3eeb8567005953d40828
-refs/heads/stable: a5dec988026bbb2290c49e183f0d40d65ed15406
+refs/heads/stable: 599bf45ac9afc309332388fe4bc42a100e3d1586
 refs/tags/1.0.0: 55bd4f8ff2b323f317ae89e254ce87162d52a375
 refs/tags/1.1.0: bc3c16f09287e5545c1d3f76b7abd54f2eca868b
 refs/tags/1.2.0: f557861f822c34f07270347b94b5280de20a597e

branches/stable/.gitignore

@@ -19,7 +19,6 @@
 *.exe
 *.fn
 *.html
-*.kdev4
 *.ky
 *.ll
 *.llvm

branches/stable/Makefile.in

@@ -62,7 +62,6 @@
 #   * tidy-basic - show file / line stats
 #   * tidy-errors - show the highest rustc error code
 #   * tidy-features - show the status of language and lib features
-#   * rustc-stage$(stage) - Only build up to a specific stage
 #
 # Then mix in some of these environment variables to harness the
 # ultimate power of The Rust Build System.
@@ -91,7 +90,7 @@
 #
 # # Rust recipes for build system success
 #
-#     // Modifying libstd? Use this command to run unit tests just on your change
+#     // Modifying libstd? Use this comment to run unit tests just on your change
 #     make check-stage1-std NO_REBUILD=1 NO_BENCH=1
 #
 #     // Added a run-pass test? Use this to test running your test

branches/stable/README.md

@@ -4,7 +4,7 @@ Rust is a fast systems programming language that guarantees
 memory safety and offers painless concurrency ([no data races]).
 It does not employ a garbage collector and has minimal runtime overhead.
 
-This repo contains the code for the compiler (`rustc`), as well
+This repo contains the code for `rustc`, the Rust compiler, as well
 as standard libraries, tools and documentation for Rust.
 
 [no data races]: http://blog.rust-lang.org/2015/04/10/Fearless-Concurrency.html

branches/stable/RELEASES.md

@@ -1,18 +1,3 @@
-Version 1.2.0 (August 2015)
-===========================
-
-Highlights
-----------
-
-* [Parallel codegen][parcodegen] is now working again, which can substantially
-  speed up large builds in debug mode; It also gets another ~33% speedup when
-  bootstrapping on a 4 core machine (using 8 jobs). It's not enabled by default,
-  but will be "in the near future"
-
-
-[parcodegen]: https://github.com/rust-lang/rust/pull/26018
-
-
 Version 1.1.0 (June 2015)
 =========================
 
@@ -21,28 +6,29 @@ Version 1.1.0 (June 2015)
 Highlights
 ----------
 
-* The [`std::fs` module has been expanded][fs] to expand the set of
+* The [`std::fs` module has been expanded][fs-expand] to expand the set of
   functionality exposed:
   * `DirEntry` now supports optimizations like `file_type` and `metadata` which
     don't incur a syscall on some platforms.
   * A `symlink_metadata` function has been added.
   * The `fs::Metadata` structure now lowers to its OS counterpart, providing
     access to all underlying information.
-* The compiler now contains extended explanations of many errors. When an error
-  with an explanation occurs the compiler suggests using the `--explain` flag
-  to read the explanation. Error explanations are also [available online][err-index].
+* The compiler contains extended explanations of many errors.  When it
+  emits such an error it also suggests using the `--explain` flag to
+  read the extended explanations, which are also [cataloged on the web
+  site][err].
 * Thanks to multiple [improvements][sk] to [type checking][pre], as
   well as other work, the time to bootstrap the compiler decreased by
   32%.
 
 Libraries
 ---------
 
-* The [`str::split_whitespace`] method splits a string on unicode
+* The `str::split_whitespace` method splits a string on unicode
   whitespace boundaries.
 * On both Windows and Unix, new extension traits provide conversion of
   I/O types to and from the underlying system handles. On Unix, these
-  traits are [`FromRawFd`] and [`AsRawFd`], on Windows `FromRawHandle`
+  traits are [`FrowRawFd`] and [`AsRawFd`], on Windows `FromRawHandle`
   and `AsRawHandle`. These are implemented for `File`, `TcpStream`,
   `TcpListener`, and `UpdSocket`. Further implementations for
   `std::process` will be stabilized later.
@@ -94,14 +80,15 @@ Misc
 * [The `drop_with_repr_extern` lint warns about mixing `repr(C)`
   with `Drop`][drop].
 
-[`str::split_whitespace`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_whitespace
+[`split_whitespace`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_whitespace
+[`Iterator::cloned`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.cloned
 [`FromRawFd`]: http://doc.rust-lang.org/nightly/std/os/unix/io/trait.FromRawFd.html
 [`AsRawFd`]: http://doc.rust-lang.org/nightly/std/os/unix/io/trait.AsRawFd.html
 [`std::os::unix::symlink`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/fn.symlink.html
 [`IntoIterator`]: http://doc.rust-lang.org/nightly/std/iter/trait.IntoIterator.html
 [`From`]: http://doc.rust-lang.org/nightly/std/convert/trait.From.html
 [rf]: https://github.com/rust-lang/rust/pull/24491
-[err-index]: http://doc.rust-lang.org/error-index.html
+[err]: http://doc.rust-lang.org/error-index.html
 [sk]: https://github.com/rust-lang/rust/pull/24615
 [pre]: https://github.com/rust-lang/rust/pull/25323
 [file]: https://github.com/rust-lang/rust/pull/24598
@@ -264,6 +251,7 @@ Misc
 [sw]: https://github.com/rust-lang/rfcs/blob/master/text/1054-str-words.md
 [th]: https://github.com/rust-lang/rfcs/blob/master/text/0909-move-thread-local-to-std-thread.md
 [send-rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0458-send-improvements.md
+[scoped]: http://static.rust-lang.org/doc/master/std/thread/fn.scoped.html
 [moar-ufcs]: https://github.com/rust-lang/rust/pull/22172
 [prim-inherent]: https://github.com/rust-lang/rust/pull/23104
 [overflow]: https://github.com/rust-lang/rfcs/blob/master/text/0560-integer-overflow.md
@@ -273,10 +261,12 @@ Misc
 [string-pattern]: https://github.com/rust-lang/rust/pull/22466
 [oibit-final]: https://github.com/rust-lang/rust/pull/21689
 [reflect]: https://github.com/rust-lang/rust/pull/23712
+[debug-builder]: https://github.com/rust-lang/rfcs/blob/master/text/0640-debug-improvements.md
 [conversion]: https://github.com/rust-lang/rfcs/pull/529
 [num-traits]: https://github.com/rust-lang/rust/pull/23549
 [index-value]: https://github.com/rust-lang/rust/pull/23601
 [dropck]: https://github.com/rust-lang/rfcs/pull/769
+[fundamental]: https://github.com/rust-lang/rfcs/pull/1023
 [ci-compare]: https://gist.github.com/brson/a30a77836fbec057cbee
 [fn-inherit]: https://github.com/rust-lang/rust/pull/23282
 [fn-blanket]: https://github.com/rust-lang/rust/pull/23895
@@ -379,6 +369,7 @@ Version 1.0.0-alpha.2 (February 2015)
 [osstr]: https://github.com/rust-lang/rust/pull/21488
 [osstr-rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0517-io-os-reform.md
 [Self]: https://github.com/rust-lang/rust/pull/22158
+[ufcs]: https://github.com/rust-lang/rust/pull/21077
 [ufcs-rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0132-ufcs.md
 [un]: https://github.com/rust-lang/rust/pull/22256
 

branches/stable/configure

@@ -899,18 +899,6 @@ then
     fi
 fi
 
-# If the clang isn't already enabled, check for GCC, and if it is missing, turn
-# on clang as a backup.
-if [ -z "$CFG_ENABLE_CLANG" ]
-then
-  CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
-  if [ $? -ne 0 ]
-  then
-    step_msg "GCC not installed, will try using Clang"
-    CFG_ENABLE_CLANG=1
-  fi
-fi
-
 # Okay, at this point, we have made up our minds about whether we are
 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
 if [ ! -z "$CFG_ENABLE_CLANG" ]
@@ -932,7 +920,7 @@ then
     LLVM_VERSION=$($LLVM_CONFIG --version)
 
     case $LLVM_VERSION in
-        (3.[5-7]*)
+        (3.[5-6]*)
             msg "found ok version of LLVM: $LLVM_VERSION"
             ;;
         (*)
@@ -1049,14 +1037,6 @@ for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
 done
 
-# copy build-triples to host-triples so that builds are a subset of hosts
-V_TEMP=""
-for i in $CFG_BUILD $CFG_HOST;
-do
-   echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
-done
-CFG_HOST=$V_TEMP
-
 # copy host-triples to target-triples so that hosts are a subset of targets
 V_TEMP=""
 for i in $CFG_HOST $CFG_TARGET;
@@ -1114,7 +1094,7 @@ do
             fi
             ;;
 
-        *-msvc)
+        x86_64-*-msvc)
             # Currently the build system is not configured to build jemalloc
             # with MSVC, so we omit this optional dependency.
             step_msg "targeting MSVC, disabling jemalloc"
@@ -1154,45 +1134,22 @@ do
             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
-            putvar CFG_MSVC_ROOT
-
-            case $i in
-                x86_64-*)
-                    bits=x86_64
-                    msvc_part=amd64
-                    ;;
-                i686-*)
-                    bits=i386
-                    msvc_part=
-                    ;;
-                *)
-                    err "can only target x86 targets for MSVC"
-                    ;;
-            esac
-            bindir="${CFG_MSVC_ROOT}/VC/bin"
-            if [ ! -z "$msvc_part" ]; then
-                bindir="$bindir/$msvc_part"
-            fi
-            eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
-            eval CFG_MSVC_CL_$bits="\"$bindir/cl.exe\""
-            eval CFG_MSVC_LIB_$bits="\"$bindir/lib.exe\""
-            eval CFG_MSVC_LINK_$bits="\"$bindir/link.exe\""
+            CFG_MSVC_CL="${CFG_MSVC_ROOT}/VC/bin/amd64/cl.exe"
+            CFG_MSVC_LIB="${CFG_MSVC_ROOT}/VC/bin/amd64/lib.exe"
+            CFG_MSVC_LINK="${CFG_MSVC_ROOT}/VC/bin/amd64/link.exe"
 
             vcvarsall="${CFG_MSVC_ROOT}/VC/vcvarsall.bat"
-            include_path=$(cmd /c "\"$vcvarsall\" $msvc_part && cmd /c echo %INCLUDE%")
+            CFG_MSVC_INCLUDE_PATH=$(cmd /c "\"$vcvarsall\" amd64 && cmd /c echo %INCLUDE%")
             need_ok "failed to learn about MSVC's INCLUDE"
-            lib_path=$(cmd /c "\"$vcvarsall\" $msvc_part && cmd /c echo %LIB%")
+            CFG_MSVC_LIB_PATH=$(cmd /c "\"$vcvarsall\" amd64 && cmd /c echo %LIB%")
             need_ok "failed to learn about MSVC's LIB"
 
-            eval CFG_MSVC_INCLUDE_PATH_${bits}="\"$include_path\""
-            eval CFG_MSVC_LIB_PATH_${bits}="\"$lib_path\""
-
-            putvar CFG_MSVC_BINDIR_${bits}
-            putvar CFG_MSVC_CL_${bits}
-            putvar CFG_MSVC_LIB_${bits}
-            putvar CFG_MSVC_LINK_${bits}
-            putvar CFG_MSVC_INCLUDE_PATH_${bits}
-            putvar CFG_MSVC_LIB_PATH_${bits}
+            putvar CFG_MSVC_ROOT
+            putvar CFG_MSVC_CL
+            putvar CFG_MSVC_LIB
+            putvar CFG_MSVC_LINK
+            putvar CFG_MSVC_INCLUDE_PATH
+            putvar CFG_MSVC_LIB_PATH
             ;;
 
         *)
@@ -1431,19 +1388,8 @@ do
 
         msg "configuring LLVM with:"
         msg "$CMAKE_ARGS"
-        case "$t" in
-            x86_64-*)
-                generator="Visual Studio 12 2013 Win64"
-                ;;
-            i686-*)
-                generator="Visual Studio 12 2013"
-                ;;
-            *)
-                err "can only build LLVM for x86 platforms"
-                ;;
-        esac
         (cd $LLVM_BUILD_DIR && "$CFG_CMAKE" $CFG_LLVM_SRC_DIR \
-                                            -G "$generator" \
+                                            -G "Visual Studio 12 2013 Win64" \
                                             $CMAKE_ARGS)
         need_ok "LLVM cmake configure failed"
     fi

branches/stable/mk/cfg/i686-pc-windows-msvc.mk

@@ -1,9 +1,9 @@
 # x86_64-pc-windows-msvc configuration
-CC_x86_64-pc-windows-msvc="$(CFG_MSVC_CL_x86_64)" -nologo
-LINK_x86_64-pc-windows-msvc="$(CFG_MSVC_LINK_x86_64)" -nologo
-CXX_x86_64-pc-windows-msvc="$(CFG_MSVC_CL_x86_64)" -nologo
-CPP_x86_64-pc-windows-msvc="$(CFG_MSVC_CL_x86_64)" -nologo
-AR_x86_64-pc-windows-msvc="$(CFG_MSVC_LIB_x86_64)" -nologo
+CC_x86_64-pc-windows-msvc="$(CFG_MSVC_CL)" -nologo
+LINK_x86_64-pc-windows-msvc="$(CFG_MSVC_LINK)" -nologo
+CXX_x86_64-pc-windows-msvc="$(CFG_MSVC_CL)" -nologo
+CPP_x86_64-pc-windows-msvc="$(CFG_MSVC_CL)" -nologo
+AR_x86_64-pc-windows-msvc="$(CFG_MSVC_LIB)" -nologo
 CFG_LIB_NAME_x86_64-pc-windows-msvc=$(1).dll
 CFG_STATIC_LIB_NAME_x86_64-pc-windows-msvc=$(1).lib
 CFG_LIB_GLOB_x86_64-pc-windows-msvc=$(1)-*.{dll,lib}
@@ -23,6 +23,64 @@ CFG_RUN_x86_64-pc-windows-msvc=$(2)
 CFG_RUN_TARG_x86_64-pc-windows-msvc=$(call CFG_RUN_x86_64-pc-windows-msvc,,$(2))
 CFG_GNU_TRIPLE_x86_64-pc-windows-msvc := x86_64-pc-win32
 
+# These two environment variables are scraped by the `./configure` script and
+# are necessary for `cl.exe` to find standard headers (the INCLUDE variable) and
+# for `link.exe` to find standard libraries (the LIB variable).
+ifdef CFG_MSVC_INCLUDE_PATH
+export INCLUDE := $(CFG_MSVC_INCLUDE_PATH)
+endif
+ifdef CFG_MSVC_LIB_PATH
+export LIB := $(CFG_MSVC_LIB_PATH)
+endif
+
+# Unfortunately `link.exe` is also a program in `/usr/bin` on MinGW installs,
+# but it's not the one that we want. As a result we make sure that our detected
+# `link.exe` shows up in PATH first.
+ifdef CFG_MSVC_LINK
+export PATH := $(CFG_MSVC_ROOT)/VC/bin/amd64:$(PATH)
+endif
+
+# There are more comments about this available in the target specification for
+# Windows MSVC in the compiler, but the gist of it is that we use `llvm-ar.exe`
+# instead of `lib.exe` for assembling archives, so we need to inject this custom
+# dependency here.
+NATIVE_TOOL_DEPS_core_T_x86_64-pc-windows-msvc += llvm-ar.exe
+INSTALLED_BINS_x86_64-pc-windows-msvc += llvm-ar.exe
+
+# When working with MSVC on windows, each DLL needs to explicitly declare its
+# interface to the outside world through some means. The options for doing so
+# include:
+#
+# 1. A custom attribute on each function itself
+# 2. A linker argument saying what to export
+# 3. A file which lists all symbols that need to be exported
+#
+# The Rust compiler takes care (1) for us for all Rust code by annotating all
+# public-facing functions with dllexport, but we have a few native dependencies
+# which need to cross the DLL boundary. The most important of these dependencies
+# is LLVM which is linked into `rustc_llvm.dll` but primarily used from
+# `rustc_trans.dll`. This means that many of LLVM's C API functions need to be
+# exposed from `rustc_llvm.dll` to be forwarded over the boundary.
+#
+# Unfortunately, at this time, LLVM does not handle this sort of exportation on
+# Windows for us, so we're forced to do it ourselves if we want it (which seems
+# like the path of least resistance right now). To do this we generate a `.DEF`
+# file [1] which we then custom-pass to the linker when building the rustc_llvm
+# crate. This DEF file list all symbols that are exported from
+# `src/librustc_llvm/lib.rs` and is generated by a small python script.
+#
+# Fun times!
+#
+# [1]: https://msdn.microsoft.com/en-us/library/28d6s79h.aspx
+RUSTFLAGS_rustc_llvm_T_x86_64-pc-windows-msvc += \
+	-C link-args="-DEF:x86_64-pc-windows-msvc/rt/rustc_llvm.def"
+CUSTOM_DEPS_rustc_llvm_T_x86_64-pc-windows-msvc += \
+	x86_64-pc-windows-msvc/rt/rustc_llvm.def
+
+x86_64-pc-windows-msvc/rt/rustc_llvm.def: $(S)src/etc/mklldef.py \
+			$(S)src/librustc_llvm/lib.rs
+	$(CFG_PYTHON) $^ $@ rustc_llvm-$(CFG_FILENAME_EXTRA)
+
 # All windows nightiles are currently a GNU triple, so this MSVC triple is not
 # bootstrapping from itself. This is relevant during stage0, and other parts of
 # the build system take this into account.

branches/stable/mk/cfg/x86_64-pc-windows-msvc.mk

@@ -13,7 +13,7 @@
 ######################################################################
 
 # The version number
-CFG_RELEASE_NUM=1.3.0
+CFG_RELEASE_NUM=1.2.0
 
 # An optional number to put after the label, e.g. '.2' -> '-beta.2'
 # NB Make sure it starts with a dot to conform to semver pre-release