Merge remote-tracking branch 'upstream/master' into asm-compile-tests

.mailmap

@@ -161,6 +161,7 @@ Michael Woerister <michaelwoerister@posteo> <michaelwoerister@gmail>
 Mickaël Raybaud-Roig <[email protected]> m-r-r <[email protected]>
 Ms2ger <[email protected]> <[email protected]>
 Mukilan Thiagarajan <[email protected]>
+Nathan West <[email protected]> <[email protected]>
 Nathan Wilson <[email protected]>
 Nathaniel Herman <[email protected]> Nathaniel Herman <[email protected]>
 Neil Pankey <[email protected]> <[email protected]>

RELEASES.md

@@ -4,10 +4,10 @@ Version 1.33.0 (2019-02-28)
 Language
 --------
 - [You can now use the `cfg(target_vendor)` attribute.][57465] E.g.
-  `#[cfg(target_vendor="linux")] fn main() { println!("Hello Linux!"); }`
+  `#[cfg(target_vendor="apple")] fn main() { println!("Hello Apple!"); }`
 - [Integer patterns such as in a match expression can now be exhaustive.][56362]
   E.g. You can have match statement on a `u8` that covers `0..=255` and
-  you would no longer be required to have a `_ => unreachable!()` case. 
+  you would no longer be required to have a `_ => unreachable!()` case.
 - [You can now have multiple patterns in `if let` and `while let`
   expressions.][57532] You can do this with the same syntax as a `match`
   expression. E.g.
@@ -51,8 +51,7 @@ Language
   // Allowed as there is only one `Read` in the module.
   pub trait Read {}
   ```
-- [`extern` functions will now abort by default when panicking.][55982]
-  This was previously undefined behaviour.
+- [You may now use `Rc`, `Arc`, and `Pin` as method receivers][56805].
 
 Compiler
 --------
@@ -109,27 +108,30 @@ Compatibility Notes
   are now deprecated in the standard library, and their usage will now produce a warning.
   Please use the `str::{trim_start, trim_end, trim_start_matches, trim_end_matches}`
   methods instead.
+- The `Error::cause` method has been deprecated in favor of `Error::source` which supports
+  downcasting.
 
-[57615]: https://github.com/rust-lang/rust/pull/57615/
-[57465]: https://github.com/rust-lang/rust/pull/57465/
-[57532]: https://github.com/rust-lang/rust/pull/57532/
-[57535]: https://github.com/rust-lang/rust/pull/57535/
-[57566]: https://github.com/rust-lang/rust/pull/57566/
+[55982]: https://github.com/rust-lang/rust/pull/55982/
+[56303]: https://github.com/rust-lang/rust/pull/56303/
+[56351]: https://github.com/rust-lang/rust/pull/56351/
+[56362]: https://github.com/rust-lang/rust/pull/56362
+[56642]: https://github.com/rust-lang/rust/pull/56642/
+[56769]: https://github.com/rust-lang/rust/pull/56769/
+[56805]: https://github.com/rust-lang/rust/pull/56805
+[56947]: https://github.com/rust-lang/rust/pull/56947/
+[57049]: https://github.com/rust-lang/rust/pull/57049/
+[57067]: https://github.com/rust-lang/rust/pull/57067/
+[57105]: https://github.com/rust-lang/rust/pull/57105
 [57130]: https://github.com/rust-lang/rust/pull/57130/
 [57167]: https://github.com/rust-lang/rust/pull/57167/
 [57175]: https://github.com/rust-lang/rust/pull/57175/
 [57234]: https://github.com/rust-lang/rust/pull/57234/
 [57332]: https://github.com/rust-lang/rust/pull/57332/
-[56947]: https://github.com/rust-lang/rust/pull/56947/
-[57049]: https://github.com/rust-lang/rust/pull/57049/
-[57067]: https://github.com/rust-lang/rust/pull/57067/
-[56769]: https://github.com/rust-lang/rust/pull/56769/
-[56642]: https://github.com/rust-lang/rust/pull/56642/
-[56303]: https://github.com/rust-lang/rust/pull/56303/
-[56351]: https://github.com/rust-lang/rust/pull/56351/
-[55982]: https://github.com/rust-lang/rust/pull/55982/
-[56362]: https://github.com/rust-lang/rust/pull/56362
-[57105]: https://github.com/rust-lang/rust/pull/57105
+[57465]: https://github.com/rust-lang/rust/pull/57465/
+[57532]: https://github.com/rust-lang/rust/pull/57532/
+[57535]: https://github.com/rust-lang/rust/pull/57535/
+[57566]: https://github.com/rust-lang/rust/pull/57566/
+[57615]: https://github.com/rust-lang/rust/pull/57615/
 [cargo/6484]: https://github.com/rust-lang/cargo/pull/6484/
 [`unix::FileExt::read_exact_at`]: https://doc.rust-lang.org/std/os/unix/fs/trait.FileExt.html#method.read_exact_at
 [`unix::FileExt::write_all_at`]: https://doc.rust-lang.org/std/os/unix/fs/trait.FileExt.html#method.write_all_at
@@ -170,7 +172,7 @@ Language
 - [You can now match against literals in macros with the `literal`
   specifier.][56072] This will match against a literal of any type.
   E.g. `1`, `'A'`, `"Hello World"`
-- [Self can now be used as a constructor and pattern for unit and tuple structs.][56365] E.g. 
+- [Self can now be used as a constructor and pattern for unit and tuple structs.][56365] E.g.
   ```rust
   struct Point(i32, i32);
 
@@ -460,7 +462,7 @@ Version 1.31.0 (2018-12-06)
 
 Language
 --------
-- 🎉 [This version marks the release of the 2018 edition of Rust.][54057] 🎉 
+- 🎉 [This version marks the release of the 2018 edition of Rust.][54057] 🎉
 - [New lifetime elision rules now allow for eliding lifetimes in functions and
   impl headers.][54778] E.g. `impl<'a> Reader for BufReader<'a> {}` can now be
   `impl Reader for BufReader<'_> {}`. Lifetimes are still required to be defined

appveyor.yml

@@ -5,11 +5,6 @@ environment:
   # server goes down presumably. See #43333 for more info
   CARGO_HTTP_CHECK_REVOKE: false
 
-  # Execute the builds on GCE instead of Hyper-V. Those builders have a 3-4
-  # minute startup overhead, but AppVeyor support recommended this as a
-  # possible solution for #58160 (spurious 259 exit codes)
-  appveyor_build_worker_cloud: gce
-
   matrix:
   # 32/64 bit MSVC tests
   - MSYS_BITS: 64

config.toml.example

@@ -61,7 +61,7 @@
 # support. You'll need to write a target specification at least, and most
 # likely, teach rustc about the C ABI of the target. Get in touch with the
 # Rust team and file an issue if you need assistance in porting!
-#targets = "X86;ARM;AArch64;Mips;PowerPC;SystemZ;JSBackend;MSP430;Sparc;NVPTX;Hexagon"
+#targets = "X86;ARM;AArch64;Mips;PowerPC;SystemZ;MSP430;Sparc;NVPTX;Hexagon"
 
 # LLVM experimental targets to build support for. These targets are specified in
 # the same format as above, but since these targets are experimental, they are
@@ -104,6 +104,8 @@
 # The value specified here will be passed as `-DLLVM_USE_LINKER` to CMake.
 #use-linker = "lld"
 
+# Whether or not to specify `-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=YES`
+#allow-old-toolchain = false
 
 # =============================================================================
 # General build configuration options
@@ -162,6 +164,9 @@
 # Python interpreter to use for various tasks throughout the build, notably
 # rustdoc tests, the lldb python interpreter, and some dist bits and pieces.
 # Note that Python 2 is currently required.
+#
+# Defaults to python2.7, then python2. If neither executable can be found, then
+# it defaults to the Python interpreter used to execute x.py.
 #python = "python2.7"
 
 # Force Cargo to check that Cargo.lock describes the precise dependency

src/bootstrap/bin/rustc.rs

@@ -107,6 +107,14 @@ fn main() {
         // actually downloaded, so we just always pass the `--sysroot` option.
         cmd.arg("--sysroot").arg(&sysroot);
 
+        cmd.arg("-Zexternal-macro-backtrace");
+
+        // Link crates to the proc macro crate for the target, but use a host proc macro crate
+        // to actually run the macros
+        if env::var_os("RUST_DUAL_PROC_MACROS").is_some() {
+            cmd.arg("-Zdual-proc-macros");
+        }
+
         // When we build Rust dylibs they're all intended for intermediate
         // usage, so make sure we pass the -Cprefer-dynamic flag instead of
         // linking all deps statically into the dylib.
@@ -256,13 +264,6 @@ fn main() {
             }
         }
 
-        // Force all crates compiled by this compiler to (a) be unstable and (b)
-        // allow the `rustc_private` feature to link to other unstable crates
-        // also in the sysroot.
-        if env::var_os("RUSTC_FORCE_UNSTABLE").is_some() {
-            cmd.arg("-Z").arg("force-unstable-if-unmarked");
-        }
-
         if let Ok(map) = env::var("RUSTC_DEBUGINFO_MAP") {
             cmd.arg("--remap-path-prefix").arg(&map);
         }
@@ -282,6 +283,14 @@ fn main() {
         }
     }
 
+    // Force all crates compiled by this compiler to (a) be unstable and (b)
+    // allow the `rustc_private` feature to link to other unstable crates
+    // also in the sysroot. We also do this for host crates, since those
+    // may be proc macros, in which case we might ship them.
+    if env::var_os("RUSTC_FORCE_UNSTABLE").is_some() && (stage != "0" || target.is_some()) {
+        cmd.arg("-Z").arg("force-unstable-if-unmarked");
+    }
+
     if env::var_os("RUSTC_PARALLEL_COMPILER").is_some() {
         cmd.arg("--cfg").arg("parallel_compiler");
     }

src/bootstrap/bootstrap.py

@@ -262,6 +262,10 @@ def default_build_triple():
         cputype = 'arm'
         if ostype == 'linux-android':
             ostype = 'linux-androideabi'
+        elif ostype == 'unknown-freebsd':
+            cputype = subprocess.check_output(
+                ['uname', '-p']).strip().decode(default_encoding)
+            ostype = 'unknown-freebsd'
     elif cputype == 'armv6l':
         cputype = 'arm'
         if ostype == 'linux-android':
@@ -830,7 +834,7 @@ def main():
 
     # x.py help <cmd> ...
     if len(sys.argv) > 1 and sys.argv[1] == 'help':
-        sys.argv = sys.argv[:1] + [sys.argv[2], '-h'] + sys.argv[3:]
+        sys.argv = [sys.argv[0], '-h'] + sys.argv[2:]
 
     help_triggered = (
         '-h' in sys.argv) or ('--help' in sys.argv) or (len(sys.argv) == 1)

src/bootstrap/builder.rs

@@ -405,7 +405,8 @@ impl<'a> Builder<'a> {
                 test::Miri,
                 test::Clippy,
                 test::CompiletestTest,
-                test::RustdocJS,
+                test::RustdocJSStd,
+                test::RustdocJSNotStd,
                 test::RustdocTheme,
                 // Run bootstrap close to the end as it's unlikely to fail
                 test::Bootstrap,
@@ -813,6 +814,17 @@ impl<'a> Builder<'a> {
             cargo.env("RUST_CHECK", "1");
         }
 
+        match mode {
+            Mode::Std | Mode::Test | Mode::ToolBootstrap | Mode::ToolStd | Mode::ToolTest=> {},
+            Mode::Rustc | Mode::Codegen | Mode::ToolRustc => {
+                // Build proc macros both for the host and the target
+                if target != compiler.host && cmd != "check" {
+                    cargo.arg("-Zdual-proc-macros");
+                    cargo.env("RUST_DUAL_PROC_MACROS", "1");
+                }
+            },
+        }
+
         cargo.arg("-j").arg(self.jobs().to_string());
         // Remove make-related flags to ensure Cargo can correctly set things up
         cargo.env_remove("MAKEFLAGS");

src/bootstrap/channel.rs

@@ -14,7 +14,7 @@ use crate::Build;
 use crate::config::Config;
 
 // The version number
-pub const CFG_RELEASE_NUM: &str = "1.34.0";
+pub const CFG_RELEASE_NUM: &str = "1.35.0";
 
 pub struct GitInfo {
     inner: Option<Info>,

src/bootstrap/check.rs

@@ -42,7 +42,8 @@ impl Step for Std {
                   true);
 
         let libdir = builder.sysroot_libdir(compiler, target);
-        add_to_sysroot(&builder, &libdir, &libstd_stamp(builder, compiler, target));
+        let hostdir = builder.sysroot_libdir(compiler, compiler.host);
+        add_to_sysroot(&builder, &libdir, &hostdir, &libstd_stamp(builder, compiler, target));
     }
 }
 
@@ -88,7 +89,8 @@ impl Step for Rustc {
                   true);
 
         let libdir = builder.sysroot_libdir(compiler, target);
-        add_to_sysroot(&builder, &libdir, &librustc_stamp(builder, compiler, target));
+        let hostdir = builder.sysroot_libdir(compiler, compiler.host);
+        add_to_sysroot(&builder, &libdir, &hostdir, &librustc_stamp(builder, compiler, target));
     }
 }
 
@@ -175,7 +177,8 @@ impl Step for Test {
                   true);
 
         let libdir = builder.sysroot_libdir(compiler, target);
-        add_to_sysroot(builder, &libdir, &libtest_stamp(builder, compiler, target));
+        let hostdir = builder.sysroot_libdir(compiler, compiler.host);
+        add_to_sysroot(builder, &libdir, &hostdir, &libtest_stamp(builder, compiler, target));
     }
 }
 
@@ -222,7 +225,8 @@ impl Step for Rustdoc {
                   true);
 
         let libdir = builder.sysroot_libdir(compiler, target);
-        add_to_sysroot(&builder, &libdir, &rustdoc_stamp(builder, compiler, target));
+        let hostdir = builder.sysroot_libdir(compiler, compiler.host);
+        add_to_sysroot(&builder, &libdir, &hostdir, &rustdoc_stamp(builder, compiler, target));
         builder.cargo(compiler, Mode::ToolRustc, target, "clean");
     }
 }