---

yaml
---
r: 226261
b: refs/heads/snap-stage3
c: 68fc2d9
h: refs/heads/master
i:
  226259: a818ec6
v: v3

Author: bors

[refs]

@@ -1,6 +1,6 @@
 ---
 refs/heads/master: e5d90d98402475b6e154ce216f9efcb80da1a747
-refs/heads/snap-stage3: b345437c3c1f73cc5c97544f07ab327abe86a2ed
+refs/heads/snap-stage3: 68fc2d98d547a7045e918b03117c740179addb77
 refs/heads/try: b53c0f93eedcdedd4fd89bccc5a3a09d1c5cd23e
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596

branches/snap-stage3/configure

@@ -283,7 +283,7 @@ opt_core() {
             fi
         done
     else
-        if [ ! -z "$META" ]
+        if [ -n "$META" ]
         then
             OP="$OP=<$META>"
         fi
@@ -317,7 +317,7 @@ envopt() {
     fi
 
     # If script or environment provided a value, save it.
-    if [ ! -z "$VV" ]
+    if [ -n "$VV" ]
     then
         putvar $V
     fi
@@ -601,7 +601,9 @@ valopt llvm-root "" "set LLVM root"
 valopt python "" "set path to python"
 valopt jemalloc-root "" "set directory where libjemalloc_pic.a is located"
 valopt build "${DEFAULT_BUILD}" "GNUs ./configure syntax LLVM build triple"
-valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path"
+valopt android-cross-path "/opt/ndk_standalone" "Android NDK standalone path (deprecated)"
+valopt arm-linux-androideabi-ndk "" "arm-linux-androideabi NDK standalone path"
+valopt aarch64-linux-android-ndk "" "aarch64-linux-android NDK standalone path"
 valopt release-channel "dev" "the name of the release channel to build"
 valopt musl-root "/usr/local" "MUSL root installation directory"
 
@@ -767,7 +769,7 @@ probe CFG_LLDB             lldb
 # On MacOS X, invoking `javac` pops up a dialog if the JDK is not
 # installed. Since `javac` is only used if `antlr4` is available,
 # probe for it only in this case.
-if [ ! -z "$CFG_ANTLR4" ]
+if [ -n "$CFG_ANTLR4" ]
 then
    probe CFG_JAVAC            javac
 fi
@@ -786,14 +788,14 @@ then
     fi
 fi
 
-if [ ! -z "$CFG_GDB" ]
+if [ -n "$CFG_GDB" ]
 then
     # Store GDB's version
     CFG_GDB_VERSION=$($CFG_GDB --version 2>/dev/null | head -1)
     putvar CFG_GDB_VERSION
 fi
 
-if [ ! -z "$CFG_LLDB" ]
+if [ -n "$CFG_LLDB" ]
 then
     # Store LLDB's version
     CFG_LLDB_VERSION=$($CFG_LLDB --version 2>/dev/null | head -1)
@@ -819,7 +821,7 @@ step_msg "looking for target specific programs"
 
 probe CFG_ADB        adb
 
-if [ ! -z "$CFG_PANDOC" ]
+if [ -n "$CFG_PANDOC" ]
 then
     # Extract "MAJOR MINOR" from Pandoc's version number
     PV_MAJOR_MINOR=$(pandoc --version | grep '^pandoc' |
@@ -845,7 +847,7 @@ then
     BIN_SUF=.exe
 fi
 
-if [ ! -z "$CFG_ENABLE_LOCAL_RUST" ]
+if [ -n "$CFG_ENABLE_LOCAL_RUST" ]
 then
     system_rustc=$(which rustc)
     if [ -f ${CFG_LOCAL_RUST_ROOT}/bin/rustc${BIN_SUF} ]
@@ -930,18 +932,18 @@ 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 "$CFG_ENABLE_CLANG" ]
+if [ -n "$CFG_ENABLE_CLANG" ]
 then
     putvar CFG_ENABLE_CLANG
 fi
 
 # Same with jemalloc.  save the setting here.
-if [ ! -z "$CFG_DISABLE_JEMALLOC" ]
+if [ -n "$CFG_DISABLE_JEMALLOC" ]
 then
     putvar CFG_DISABLE_JEMALLOC
 fi
 
-if [ ! -z "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
+if [ -n "$CFG_LLVM_ROOT" -a -z "$CFG_DISABLE_LLVM_VERSION_CHECK" -a -e "$CFG_LLVM_ROOT/bin/llvm-config" ]
 then
     step_msg "using custom LLVM at $CFG_LLVM_ROOT"
 
@@ -970,7 +972,7 @@ fi
 # CFG_ENABLE_CLANG is set, that indicates that we are opting into
 # running such safeguards.
 
-if [ ! -z "$CC" ]
+if [ -n "$CC" ]
 then
     msg "skipping compiler inference steps; using provided CC=$CC"
     CFG_CC="$CC"
@@ -983,7 +985,7 @@ then
         putvar CFG_USING_CLANG
     fi
 else
-    if [ ! -z "$CFG_ENABLE_CLANG" ]
+    if [ -n "$CFG_ENABLE_CLANG" ]
     then
         if [ -z "$CFG_CLANG" ]
         then
@@ -997,7 +999,7 @@ else
     fi
 fi
 
-if [ ! -z "$CFG_ENABLE_CLANG" ]
+if [ -n "$CFG_ENABLE_CLANG" ]
 then
     case "$CC" in
         (''|*clang)
@@ -1013,7 +1015,7 @@ then
             CFG_CLANG_VERSION=$(echo $CFG_CLANG_REPORTED_VERSION | sed 's/.*version \(.*\) .*/\1/')
         fi
 
-        if [ ! -z "$CFG_OSX_CLANG_VERSION" ]
+        if [ -n "$CFG_OSX_CLANG_VERSION" ]
         then
             case $CFG_OSX_CLANG_VERSION in
                 (7.0*)
@@ -1042,7 +1044,7 @@ then
     esac
 fi
 
-if [ ! -z "$CFG_ENABLE_CCACHE" ]
+if [ -n "$CFG_ENABLE_CCACHE" ]
 then
     if [ -z "$CFG_CCACHE" ]
     then
@@ -1112,20 +1114,24 @@ do
     fi
 
     case $i in
-        arm-linux-androideabi)
-
-            if [ ! -f $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-gcc ]
-            then
-                err "NDK $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-gcc not found"
-            fi
-            if [ ! -f $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-g++ ]
-            then
-                err "NDK $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-g++ not found"
-            fi
-            if [ ! -f $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-ar ]
+        *android*)
+            upper_snake_target=$(echo "$i" | tr '[:lower:]' '[:upper:]' | tr '\-' '\_')
+            eval ndk=\$"CFG_${upper_snake_target}_NDK"
+            if [ -z "$ndk" ]
             then
-                err "NDK $CFG_ANDROID_CROSS_PATH/bin/arm-linux-androideabi-ar not found"
+                ndk=$CFG_ANDROID_CROSS_PATH
+                eval "CFG_${upper_snake_target}_NDK"=$CFG_ANDROID_CROSS_PATH
+                warn "generic/default Android NDK option is deprecated (use --$i-ndk option instead)"
             fi
+
+            # Perform a basic sanity check of the NDK
+            for android_ndk_tool in "$ndk/bin/$i-gcc" "$ndk/bin/$i-g++" "$ndk/bin/$i-ar"
+            do
+                if [ ! -f $android_ndk_tool ]
+                then
+                    err "NDK tool $android_ndk_tool not found (bad or missing --$i-ndk option?)"
+                fi
+            done
             ;;
 
         arm-apple-darwin)
@@ -1177,8 +1183,13 @@ do
             # INCLUDE and LIB variables for MSVC so we can set those in the
             # build system as well.
             install=$(reg QUERY \
-                       'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\12.0' \
+                       'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\14.0' \
                        -v InstallDir)
+            if [ -z "$install" ]; then
+              install=$(reg QUERY \
+                         'HKLM\SOFTWARE\Wow6432Node\Microsoft\VisualStudio\12.0' \
+                         -v InstallDir)
+            fi
             need_ok "couldn't find visual studio install root"
             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
@@ -1199,7 +1210,7 @@ do
                     ;;
             esac
             bindir="${CFG_MSVC_ROOT}/VC/bin"
-            if [ ! -z "$msvc_part" ]; then
+            if [ -n "$msvc_part" ]; then
                 bindir="$bindir/$msvc_part"
             fi
             eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
@@ -1229,7 +1240,7 @@ do
     esac
 done
 
-if [ ! -z "$CFG_PERF" ]
+if [ -n "$CFG_PERF" ]
 then
     HAVE_PERF_LOGFD=`$CFG_PERF stat --log-fd 2>&1 | grep 'unknown option'`
     if [ -z "$HAVE_PERF_LOGFD" ];
@@ -1339,11 +1350,11 @@ then
     "${CFG_GIT}" submodule init
 
     # Disable submodules that we're not using
-    if [ ! -z "${CFG_LLVM_ROOT}" ]; then
+    if [ -n "${CFG_LLVM_ROOT}" ]; then
         msg "git: submodule deinit src/llvm"
         "${CFG_GIT}" submodule deinit src/llvm
     fi
-    if [ ! -z "${CFG_JEMALLOC_ROOT}" ]; then
+    if [ -n "${CFG_JEMALLOC_ROOT}" ]; then
         msg "git: submodule deinit src/jemalloc"
         "${CFG_GIT}" submodule deinit src/jemalloc
     fi
@@ -1390,7 +1401,7 @@ do
     if [ -z $CFG_LLVM_ROOT ]
     then
         LLVM_BUILD_DIR=${CFG_BUILD_DIR}$t/llvm
-        if [ ! -z "$CFG_DISABLE_OPTIMIZE_LLVM" ]
+        if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]
         then
             LLVM_DBG_OPTS="--enable-debug-symbols --disable-optimized"
             # Just use LLVM straight from its build directory to
@@ -1446,7 +1457,7 @@ do
         msg "configuring LLVM for $t with cmake"
 
         CMAKE_ARGS="-DLLVM_INCLUDE_TESTS=OFF"
-        if [ ! -z "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then
+        if [ -n "$CFG_DISABLE_OPTIMIZE_LLVM" ]; then
             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug"
         else
             CMAKE_ARGS="$CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release"
@@ -1460,12 +1471,22 @@ do
 
         msg "configuring LLVM with:"
         msg "$CMAKE_ARGS"
+        case "$CFG_MSVC_ROOT" in
+            *14.0*)
+                generator="Visual Studio 14 2015"
+                ;;
+            *12.0*)
+                generator="Visual Studio 12 2013"
+                ;;
+            *)
+                err "can't determine generator for LLVM cmake"
+                ;;
+        esac
         case "$t" in
             x86_64-*)
-                generator="Visual Studio 12 2013 Win64"
+                generator="$generator Win64"
                 ;;
             i686-*)
-                generator="Visual Studio 12 2013"
                 ;;
             *)
                 err "can only build LLVM for x86 platforms"
@@ -1538,7 +1559,7 @@ do
 
             (*)
             msg "inferring LLVM_CXX/CC from CXX/CC = $CXX/$CC"
-            if [ ! -z "$CFG_ENABLE_CCACHE" ]
+            if [ -n "$CFG_ENABLE_CCACHE" ]
             then
                 if [ -z "$CFG_CCACHE" ]
                 then
@@ -1667,25 +1688,26 @@ putvar CFG_HOST
 putvar CFG_TARGET
 putvar CFG_LIBDIR_RELATIVE
 putvar CFG_DISABLE_MANAGE_SUBMODULES
-putvar CFG_ANDROID_CROSS_PATH
+putvar CFG_AARCH64_LINUX_ANDROID_NDK
+putvar CFG_ARM_LINUX_ANDROIDEABI_NDK
 putvar CFG_MANDIR
 
 # Avoid spurious warnings from clang by feeding it original source on
 # ccache-miss rather than preprocessed input.
-if [ ! -z "$CFG_ENABLE_CCACHE" ] && [ ! -z "$CFG_USING_CLANG" ]
+if [ -n "$CFG_ENABLE_CCACHE" ] && [ -n "$CFG_USING_CLANG" ]
 then
     CFG_CCACHE_CPP2=1
     putvar CFG_CCACHE_CPP2
 fi
 
-if [ ! -z "$CFG_ENABLE_CCACHE" ]
+if [ -n "$CFG_ENABLE_CCACHE" ]
 then
     CFG_CCACHE_BASEDIR=${CFG_SRC_DIR}
     putvar CFG_CCACHE_BASEDIR
 fi
 
 
-if [ ! -z $BAD_PANDOC ]
+if [ -n $BAD_PANDOC ]
 then
     CFG_PANDOC=
     putvar CFG_PANDOC

branches/snap-stage3/mk/cfg/aarch64-linux-android.mk

@@ -1,9 +1,9 @@
 # aarch64-linux-android configuration
 # CROSS_PREFIX_aarch64-linux-android-
-CC_aarch64-linux-android=$(CFG_ANDROID_CROSS_PATH)/bin/aarch64-linux-android-gcc
-CXX_aarch64-linux-android=$(CFG_ANDROID_CROSS_PATH)/bin/aarch64-linux-android-g++
-CPP_aarch64-linux-android=$(CFG_ANDROID_CROSS_PATH)/bin/aarch64-linux-android-gcc -E
-AR_aarch64-linux-android=$(CFG_ANDROID_CROSS_PATH)/bin/aarch64-linux-android-ar
+CC_aarch64-linux-android=$(CFG_AARCH64_LINUX_ANDROID_NDK)/bin/aarch64-linux-android-gcc
+CXX_aarch64-linux-android=$(CFG_AARCH64_LINUX_ANDROID_NDK)/bin/aarch64-linux-android-g++
+CPP_aarch64-linux-android=$(CFG_AARCH64_LINUX_ANDROID_NDK)/bin/aarch64-linux-android-gcc -E
+AR_aarch64-linux-android=$(CFG_AARCH64_LINUX_ANDROID_NDK)/bin/aarch64-linux-android-ar
 CFG_LIB_NAME_aarch64-linux-android=lib$(1).so
 CFG_STATIC_LIB_NAME_aarch64-linux-android=lib$(1).a
 CFG_LIB_GLOB_aarch64-linux-android=lib$(1)-*.so

branches/snap-stage3/mk/cfg/arm-linux-androideabi.mk

@@ -1,8 +1,8 @@
 # arm-linux-androideabi configuration
-CC_arm-linux-androideabi=$(CFG_ANDROID_CROSS_PATH)/bin/arm-linux-androideabi-gcc
-CXX_arm-linux-androideabi=$(CFG_ANDROID_CROSS_PATH)/bin/arm-linux-androideabi-g++
-CPP_arm-linux-androideabi=$(CFG_ANDROID_CROSS_PATH)/bin/arm-linux-androideabi-gcc -E
-AR_arm-linux-androideabi=$(CFG_ANDROID_CROSS_PATH)/bin/arm-linux-androideabi-ar
+CC_arm-linux-androideabi=$(CFG_ARM_LINUX_ANDROIDEABI_NDK)/bin/arm-linux-androideabi-gcc
+CXX_arm-linux-androideabi=$(CFG_ARM_LINUX_ANDROIDEABI_NDK)/bin/arm-linux-androideabi-g++
+CPP_arm-linux-androideabi=$(CFG_ARM_LINUX_ANDROIDEABI_NDK)/bin/arm-linux-androideabi-gcc -E
+AR_arm-linux-androideabi=$(CFG_ARM_LINUX_ANDROIDEABI_NDK)/bin/arm-linux-androideabi-ar
 CFG_LIB_NAME_arm-linux-androideabi=lib$(1).so
 CFG_STATIC_LIB_NAME_arm-linux-androideabi=lib$(1).a
 CFG_LIB_GLOB_arm-linux-androideabi=lib$(1)-*.so

branches/snap-stage3/src/doc/reference.md

@@ -591,8 +591,9 @@ always been designed to be compiled. For these reasons, this section assumes a
 compiler.
 
 Rust's semantics obey a *phase distinction* between compile-time and
-run-time.[^phase-distinction] Those semantic rules that have a *static
-interpretation* govern the success or failure of compilation. Those semantics
+run-time.[^phase-distinction] Semantic rules that have a *static
+interpretation* govern the success or failure of compilation, while
+semantic rules
 that have a *dynamic interpretation* govern the behavior of the program at
 run-time.
 
@@ -1636,6 +1637,10 @@ The type of a function declared in an extern block is `extern "abi" fn(A1, ...,
 An) -> R`, where `A1...An` are the declared types of its arguments and `R` is
 the declared return type.
 
+It is valid to add the `link` attribute on an empty extern block. You can use
+this to satisfy the linking requirements of extern blocks elsewhere in your code
+(including upstream crates) instead of adding the attribute to each extern block.
+
 ## Visibility and Privacy
 
 These two terms are often used interchangeably, and what they are attempting to
@@ -2364,6 +2369,8 @@ The currently implemented features of the reference compiler are:
                               internally without imposing on callers
                               (i.e. making them behave like function calls in
                               terms of encapsulation).
+* - `default_type_parameter_fallback` - Allows type parameter defaults to
+                                        influence type inference.
 
 If a feature is promoted to a language feature, then all existing programs will
 start to receive compilation warnings about `#![feature]` directives which enabled

branches/snap-stage3/src/doc/rust.css

@@ -221,6 +221,10 @@ a > code {
     color: #428BCA;
 }
 
+.section-header > a > code {
+    color: #8D1A38;
+}
+
 /* Code highlighting */
 pre.rust .kw { color: #8959A8; }
 pre.rust .kw-2, pre.rust .prelude-ty { color: #4271AE; }