Auto merge of #56186 - kennytm:rollup, r=kennytm

Rollup of 14 pull requests Successful merges: - #55767 (Disable some pretty-printers when gdb is rust-enabled) - #55838 (Fix #[cfg] for step impl on ranges) - #55869 (Add std::iter::unfold) - #55945 (Ensure that the argument to `static_assert` is a `bool`) - #56022 (When popping in CTFE, perform validation before jumping to next statement to have a better span for the error) - #56048 (Add rustc_codegen_ssa to sysroot) - #56091 (Fix json output in the self-profiler) - #56097 (Fix invalid bitcast taking bool out of a union represented as a scalar) - #56116 (ci: Download clang/lldb from tarballs) - #56120 (Add unstable Literal::subspan().) - #56154 (Pass additional linker flags when targeting Fuchsia) - #56162 (std::str Adapt documentation to reality) - #56163 ([master] Backport 1.30.1 release notes) - #56168 (Fix the tracking issue for hash_raw_entry) Failed merges: r? @ghost
2025-02-11 06:24:24 +00:00 · 2018-11-23 18:42:20 +00:00 · 2018-11-23 18:42:20 +00:00 · 1f57e48411
commit 1f57e48411
parent 821bad3a5b 36189a2739
27 changed files with 606 additions and 96 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@ -2073,6 +2073,7 @@ dependencies = [
 name = "rustc-main"
 version = "0.0.0"
 dependencies = [
+ "rustc_codegen_ssa 0.0.0",
 "rustc_driver 0.0.0",
 "rustc_target 0.0.0",
 ]
@ -2169,7 +2170,6 @@ dependencies = [
 "memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc_codegen_ssa 0.0.0",
 "rustc_llvm 0.0.0",
 ]

@ -2177,10 +2177,27 @@ dependencies = [
 name = "rustc_codegen_ssa"
 version = "0.0.0"
 dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
 "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jobserver 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc 0.0.0",
 "rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_allocator 0.0.0",
+ "rustc_apfloat 0.0.0",
+ "rustc_codegen_utils 0.0.0",
+ "rustc_data_structures 0.0.0",
+ "rustc_errors 0.0.0",
+ "rustc_fs_util 0.0.0",
+ "rustc_incremental 0.0.0",
+ "rustc_mir 0.0.0",
+ "rustc_target 0.0.0",
+ "serialize 0.0.0",
+ "syntax 0.0.0",
+ "syntax_pos 0.0.0",
 ]

 [[package]]
--- a/RELEASES.md
+++ b/RELEASES.md
@ -74,6 +74,14 @@ Cargo
 [cargo-rename-reference]: https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#renaming-dependencies-in-cargotoml
 [const-reference]: https://doc.rust-lang.org/reference/items/functions.html#const-functions

+Version 1.30.1 (2018-11-08)
+===========================
+
+- [Fixed overflow ICE in rustdoc][54199]
+- [Cap Cargo progress bar width at 60 in MSYS terminals][cargo/6122]
+
+[54199]: https://github.com/rust-lang/rust/pull/54199
+[cargo/6122]: https://github.com/rust-lang/cargo/pull/6122

 Version 1.30.0 (2018-10-25)
 ==========================
--- a/src/ci/init_repo.sh
+++ b/src/ci/init_repo.sh
@ -55,6 +55,7 @@ function fetch_submodule {
 }

 included="src/llvm src/llvm-emscripten src/doc/book src/doc/rust-by-example"
+included="$included src/tools/lld src/tools/clang src/tools/lldb"
 modules="$(git config --file .gitmodules --get-regexp '\.path$' | cut -d' ' -f2)"
 modules=($modules)
 use_git=""
--- a/src/etc/gdb_rust_pretty_printing.py
+++ b/src/etc/gdb_rust_pretty_printing.py
@ -18,6 +18,8 @@ import debugger_pretty_printers_common as rustpp
 if sys.version_info[0] >= 3:
    xrange = range

+rust_enabled = 'set language rust' in gdb.execute('complete set language ru', to_string = True)
+
 #===============================================================================
 # GDB Pretty Printing Module for Rust
 #===============================================================================
@ -99,27 +101,9 @@ def rust_pretty_printer_lookup_function(gdb_val):
    val = GdbValue(gdb_val)
    type_kind = val.type.get_type_kind()

-    if type_kind == rustpp.TYPE_KIND_EMPTY:
-        return RustEmptyPrinter(val)
-
-    if type_kind == rustpp.TYPE_KIND_REGULAR_STRUCT:
-        return RustStructPrinter(val,
-                                 omit_first_field = False,
-                                 omit_type_name = False,
-                                 is_tuple_like = False)
-
-    if type_kind == rustpp.TYPE_KIND_STRUCT_VARIANT:
-        return RustStructPrinter(val,
-                                 omit_first_field = True,
-                                 omit_type_name = False,
-                                 is_tuple_like = False)
-
    if type_kind == rustpp.TYPE_KIND_SLICE:
        return RustSlicePrinter(val)

-    if type_kind == rustpp.TYPE_KIND_STR_SLICE:
-        return RustStringSlicePrinter(val)
-
    if type_kind == rustpp.TYPE_KIND_STD_VEC:
        return RustStdVecPrinter(val)

@ -138,6 +122,29 @@ def rust_pretty_printer_lookup_function(gdb_val):
    if type_kind == rustpp.TYPE_KIND_OS_STRING:
        return RustOsStringPrinter(val)

+    # Checks after this point should only be for "compiler" types --
+    # things that gdb's Rust language support knows about.
+    if rust_enabled:
+        return None
+
+    if type_kind == rustpp.TYPE_KIND_EMPTY:
+        return RustEmptyPrinter(val)
+
+    if type_kind == rustpp.TYPE_KIND_REGULAR_STRUCT:
+        return RustStructPrinter(val,
+                                 omit_first_field = False,
+                                 omit_type_name = False,
+                                 is_tuple_like = False)
+
+    if type_kind == rustpp.TYPE_KIND_STRUCT_VARIANT:
+        return RustStructPrinter(val,
+                                 omit_first_field = True,
+                                 omit_type_name = False,
+                                 is_tuple_like = False)
+
+    if type_kind == rustpp.TYPE_KIND_STR_SLICE:
+        return RustStringSlicePrinter(val)
+
    if type_kind == rustpp.TYPE_KIND_TUPLE:
        return RustStructPrinter(val,
                                 omit_first_field = False,
--- a/src/libcore/iter/mod.rs
+++ b/src/libcore/iter/mod.rs
@ -112,10 +112,10 @@
 //!
 //!     // next() is the only required method
 //!     fn next(&mut self) -> Option<usize> {
-//!         // increment our count. This is why we started at zero.
+//!         // Increment our count. This is why we started at zero.
 //!         self.count += 1;
 //!
-//!         // check to see if we've finished counting or not.
+//!         // Check to see if we've finished counting or not.
 //!         if self.count < 6 {
 //!             Some(self.count)
 //!         } else {
@ -339,6 +339,8 @@ pub use self::sources::{RepeatWith, repeat_with};
 pub use self::sources::{Empty, empty};
 #[stable(feature = "iter_once", since = "1.2.0")]
 pub use self::sources::{Once, once};
+#[unstable(feature = "iter_unfold", issue = "55977")]
+pub use self::sources::{Unfold, unfold, Successors, successors};

 #[stable(feature = "rust1", since = "1.0.0")]
 pub use self::traits::{FromIterator, IntoIterator, DoubleEndedIterator, Extend};
--- a/src/libcore/iter/range.rs
+++ b/src/libcore/iter/range.rs
@ -166,14 +166,14 @@ macro_rules! step_impl_no_between {
 }

 step_impl_unsigned!(usize u8 u16);
-#[cfg(not(target_pointer_witdth = "16"))]
+#[cfg(not(target_pointer_width = "16"))]
 step_impl_unsigned!(u32);
-#[cfg(target_pointer_witdth = "16")]
+#[cfg(target_pointer_width = "16")]
 step_impl_no_between!(u32);
 step_impl_signed!([isize: usize] [i8: u8] [i16: u16]);
-#[cfg(not(target_pointer_witdth = "16"))]
+#[cfg(not(target_pointer_width = "16"))]
 step_impl_signed!([i32: u32]);
-#[cfg(target_pointer_witdth = "16")]
+#[cfg(target_pointer_width = "16")]
 step_impl_no_between!(i32);
 #[cfg(target_pointer_width = "64")]
 step_impl_unsigned!(u64);
--- a/src/libcore/iter/sources.rs
+++ b/src/libcore/iter/sources.rs
@ -386,3 +386,164 @@ impl<T> FusedIterator for Once<T> {}
 pub fn once<T>(value: T) -> Once<T> {
    Once { inner: Some(value).into_iter() }
 }
+
+/// Creates a new iterator where each iteration calls the provided closure
+/// `F: FnMut(&mut St) -> Option<T>`.
+///
+/// This allows creating a custom iterator with any behavior
+/// without using the more verbose syntax of creating a dedicated type
+/// and implementing the `Iterator` trait for it.
+///
+/// In addition to its captures and environment,
+/// the closure is given a mutable reference to some state
+/// that is preserved across iterations.
+/// That state starts as the given `initial_state` value.
+///
+/// Note that the `Unfold` iterator doesn’t make assumptions about the behavior of the closure,
+/// and therefore conservatively does not implement [`FusedIterator`],
+/// or override [`Iterator::size_hint`] from its default `(0, None)`.
+///
+/// [`FusedIterator`]: trait.FusedIterator.html
+/// [`Iterator::size_hint`]: trait.Iterator.html#method.size_hint
+///
+/// # Examples
+///
+/// Let’s re-implement the counter iterator from [module-level documentation]:
+///
+/// [module-level documentation]: index.html
+///
+/// ```
+/// #![feature(iter_unfold)]
+/// let counter = std::iter::unfold(0, |count| {
+///     // Increment our count. This is why we started at zero.
+///     *count += 1;
+///
+///     // Check to see if we've finished counting or not.
+///     if *count < 6 {
+///         Some(*count)
+///     } else {
+///         None
+///     }
+/// });
+/// assert_eq!(counter.collect::<Vec<_>>(), &[1, 2, 3, 4, 5]);
+/// ```
+#[inline]
+#[unstable(feature = "iter_unfold", issue = "55977")]
+pub fn unfold<St, T, F>(initial_state: St, f: F) -> Unfold<St, F>
+    where F: FnMut(&mut St) -> Option<T>
+{
+    Unfold {
+        state: initial_state,
+        f,
+    }
+}
+
+/// An iterator where each iteration calls the provided closure `F: FnMut(&mut St) -> Option<T>`.
+///
+/// This `struct` is created by the [`unfold`] function.
+/// See its documentation for more.
+///
+/// [`unfold`]: fn.unfold.html
+#[derive(Clone)]
+#[unstable(feature = "iter_unfold", issue = "55977")]
+pub struct Unfold<St, F> {
+    state: St,
+    f: F,
+}
+
+#[unstable(feature = "iter_unfold", issue = "55977")]
+impl<St, T, F> Iterator for Unfold<St, F>
+    where F: FnMut(&mut St) -> Option<T>
+{
+    type Item = T;
+
+    #[inline]
+    fn next(&mut self) -> Option<Self::Item> {
+        (self.f)(&mut self.state)
+    }
+}
+
+#[unstable(feature = "iter_unfold", issue = "55977")]
+impl<St: fmt::Debug, F> fmt::Debug for Unfold<St, F> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_struct("Unfold")
+            .field("state", &self.state)
+            .finish()
+    }
+}
+
+/// Creates a new iterator where each successive item is computed based on the preceding one.
+///
+/// The iterator starts with the given first item (if any)
+/// and calls the given `FnMut(&T) -> Option<T>` closure to compute each item’s successor.
+///
+/// ```
+/// #![feature(iter_unfold)]
+/// use std::iter::successors;
+///
+/// let powers_of_10 = successors(Some(1_u16), |n| n.checked_mul(10));
+/// assert_eq!(powers_of_10.collect::<Vec<_>>(), &[1, 10, 100, 1_000, 10_000]);
+/// ```
+#[unstable(feature = "iter_unfold", issue = "55977")]
+pub fn successors<T, F>(first: Option<T>, succ: F) -> Successors<T, F>
+    where F: FnMut(&T) -> Option<T>
+{
+    // If this function returned `impl Iterator<Item=T>`
+    // it could be based on `unfold` and not need a dedicated type.
+    // However having a named `Successors<T, F>` type allows it to be `Clone` when `T` and `F` are.
+    Successors {
+        next: first,
+        succ,
+    }
+}
+
+/// An new iterator where each successive item is computed based on the preceding one.
+///
+/// This `struct` is created by the [`successors`] function.
+/// See its documentation for more.
+///
+/// [`successors`]: fn.successors.html
+#[derive(Clone)]
+#[unstable(feature = "iter_unfold", issue = "55977")]
+pub struct Successors<T, F> {
+    next: Option<T>,
+    succ: F,
+}
+
+#[unstable(feature = "iter_unfold", issue = "55977")]
+impl<T, F> Iterator for Successors<T, F>
+    where F: FnMut(&T) -> Option<T>
+{
+    type Item = T;
+
+    #[inline]
+    fn next(&mut self) -> Option<Self::Item> {
+        self.next.take().map(|item| {
+            self.next = (self.succ)(&item);
+            item
+        })
+    }
+
+    #[inline]
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        if self.next.is_some() {
+            (1, None)
+        } else {
+            (0, Some(0))
+        }
+    }
+}
+
+#[unstable(feature = "iter_unfold", issue = "55977")]
+impl<T, F> FusedIterator for Successors<T, F>
+    where F: FnMut(&T) -> Option<T>
+{}
+
+#[unstable(feature = "iter_unfold", issue = "55977")]
+impl<T: fmt::Debug, F> fmt::Debug for Successors<T, F> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_struct("Successors")
+            .field("next", &self.next)
+            .finish()
+    }
+}
--- a/src/libcore/str/mod.rs
+++ b/src/libcore/str/mod.rs
@ -1424,10 +1424,8 @@ fn contains_nonascii(x: usize) -> bool {
    (x & NONASCII_MASK) != 0
 }

-/// Walks through `iter` checking that it's a valid UTF-8 sequence,
-/// returning `true` in that case, or, if it is invalid, `false` with
-/// `iter` reset such that it is pointing at the first byte in the
-/// invalid sequence.
+/// Walks through `v` checking that it's a valid UTF-8 sequence,
+/// returning `Ok(())` in that case, or, if it is invalid, `Err(err)`.
 #[inline]
 fn run_utf8_validation(v: &[u8]) -> Result<(), Utf8Error> {
    let mut index = 0;
--- a/src/libcore/tests/iter.rs
+++ b/src/libcore/tests/iter.rs
@ -1759,6 +1759,17 @@ fn test_repeat_with_take_collect() {
    assert_eq!(v, vec![1, 2, 4, 8, 16]);
 }

+#[test]
+fn test_successors() {
+    let mut powers_of_10 = successors(Some(1_u16), |n| n.checked_mul(10));
+    assert_eq!(powers_of_10.by_ref().collect::<Vec<_>>(), &[1, 10, 100, 1_000, 10_000]);
+    assert_eq!(powers_of_10.next(), None);
+
+    let mut empty = successors(None::<u32>, |_| unimplemented!());
+    assert_eq!(empty.next(), None);
+    assert_eq!(empty.next(), None);
+}
+
 #[test]
 fn test_fuse() {
    let mut it = 0..3;
--- a/src/libcore/tests/lib.rs
+++ b/src/libcore/tests/lib.rs
@ -19,6 +19,7 @@
 #![feature(flt2dec)]
 #![feature(fmt_internals)]
 #![feature(hashmap_internals)]
+#![feature(iter_unfold)]
 #![feature(pattern)]
 #![feature(range_is_empty)]
 #![feature(raw)]
--- a/src/libproc_macro/lib.rs
+++ b/src/libproc_macro/lib.rs
@ -50,6 +50,7 @@ mod diagnostic;
 #[unstable(feature = "proc_macro_diagnostic", issue = "54140")]
 pub use diagnostic::{Diagnostic, Level, MultiSpan};

+use std::ops::{Bound, RangeBounds};
 use std::{ascii, fmt, iter};
 use std::path::PathBuf;
 use rustc_data_structures::sync::Lrc;
@ -59,7 +60,7 @@ use syntax::errors::DiagnosticBuilder;
 use syntax::parse::{self, token};
 use syntax::symbol::Symbol;
 use syntax::tokenstream::{self, DelimSpan};
-use syntax_pos::{Pos, FileName};
+use syntax_pos::{Pos, FileName, BytePos};

 /// The main type provided by this crate, representing an abstract stream of
 /// tokens, or, more specifically, a sequence of token trees.
@ -1168,6 +1169,50 @@ impl Literal {
    pub fn set_span(&mut self, span: Span) {
        self.span = span;
    }
+
+    /// Returns a `Span` that is a subset of `self.span()` containing only the
+    /// source bytes in range `range`. Returns `None` if the would-be trimmed
+    /// span is outside the bounds of `self`.
+    // FIXME(SergioBenitez): check that the byte range starts and ends at a
+    // UTF-8 boundary of the source. otherwise, it's likely that a panic will
+    // occur elsewhere when the source text is printed.
+    // FIXME(SergioBenitez): there is no way for the user to know what
+    // `self.span()` actually maps to, so this method can currently only be
+    // called blindly. For example, `to_string()` for the character 'c' returns
+    // "'\u{63}'"; there is no way for the user to know whether the source text
+    // was 'c' or whether it was '\u{63}'.
+    #[unstable(feature = "proc_macro_span", issue = "54725")]
+    pub fn subspan<R: RangeBounds<usize>>(&self, range: R) -> Option<Span> {
+        let inner = self.span().0;
+        let length = inner.hi().to_usize() - inner.lo().to_usize();
+
+        let start = match range.start_bound() {
+            Bound::Included(&lo) => lo,
+            Bound::Excluded(&lo) => lo + 1,
+            Bound::Unbounded => 0,
+        };
+
+        let end = match range.end_bound() {
+            Bound::Included(&hi) => hi + 1,
+            Bound::Excluded(&hi) => hi,
+            Bound::Unbounded => length,
+        };
+
+        // Bounds check the values, preventing addition overflow and OOB spans.
+        if start > u32::max_value() as usize
+            || end > u32::max_value() as usize
+            || (u32::max_value() - start as u32) < inner.lo().to_u32()
+            || (u32::max_value() - end as u32) < inner.lo().to_u32()
+            || start >= end
+            || end > length
+        {
+            return None;
+        }
+
+        let new_lo = inner.lo() + BytePos::from_usize(start);
+        let new_hi = inner.lo() + BytePos::from_usize(end);
+        Some(Span(inner.with_lo(new_lo).with_hi(new_hi)))
+    }
 }

 /// Prints the literal as a string that should be losslessly convertible
--- a/src/librustc/util/profiling.rs
+++ b/src/librustc/util/profiling.rs
@ -93,16 +93,27 @@ macro_rules! define_categories {
                $(
                    let (hits, total) = self.query_counts.$name;

+                    //normalize hits to 0%
+                    let hit_percent =
+                        if total > 0 {
+                            ((hits as f32) / (total as f32)) * 100.0
+                        } else {
+                            0.0
+                        };
+
                    json.push_str(&format!(
                        "{{ \"category\": {}, \"time_ms\": {},
-                            \"query_count\": {}, \"query_hits\": {} }}",
+                            \"query_count\": {}, \"query_hits\": {} }},",
                        stringify!($name),
                        self.times.$name / 1_000_000,
                        total,
-                        format!("{:.2}", (((hits as f32) / (total as f32)) * 100.0))
+                        format!("{:.2}", hit_percent)
                    ));
                )*

+                //remove the trailing ',' character
+                json.pop();
+
                json.push(']');

                json
--- a/src/librustc_codegen_llvm/Cargo.toml
+++ b/src/librustc_codegen_llvm/Cargo.toml
@ -13,7 +13,6 @@ test = false
 cc = "1.0.1"
 num_cpus = "1.0"
 rustc-demangle = "0.1.4"
-rustc_codegen_ssa = { path = "../librustc_codegen_ssa" }
 rustc_llvm = { path = "../librustc_llvm" }
 memmap = "0.6"

--- a/src/librustc_codegen_llvm/back/link.rs
+++ b/src/librustc_codegen_llvm/back/link.rs
@ -19,7 +19,7 @@ use super::rpath::RPathConfig;
 use super::rpath;
 use metadata::METADATA_FILENAME;
 use rustc::session::config::{self, DebugInfo, OutputFilenames, OutputType, PrintRequest};
-use rustc::session::config::{RUST_CGU_EXT, Lto};
+use rustc::session::config::{RUST_CGU_EXT, Lto, Sanitizer};
 use rustc::session::filesearch;
 use rustc::session::search_paths::PathKind;
 use rustc::session::Session;
@ -491,6 +491,14 @@ fn link_natively(sess: &Session,
    }
    cmd.args(&sess.opts.debugging_opts.pre_link_arg);

+    if sess.target.target.options.is_like_fuchsia {
+        let prefix = match sess.opts.debugging_opts.sanitizer {
+            Some(Sanitizer::Address) => "asan/",
+            _ => "",
+        };
+        cmd.arg(format!("--dynamic-linker={}ld.so.1", prefix));
+    }
+
    let pre_link_objects = if crate_type == config::CrateType::Executable {
        &sess.target.target.options.pre_link_objects_exe
    } else {
--- a/src/librustc_codegen_ssa/Cargo.toml
+++ b/src/librustc_codegen_ssa/Cargo.toml
@ -6,10 +6,29 @@ version = "0.0.0"
 [lib]
 name = "rustc_codegen_ssa"
 path = "lib.rs"
+crate-type = ["dylib"]
 test = false

 [dependencies]
+bitflags = "1.0.4"
 cc = "1.0.1"
 num_cpus = "1.0"
 rustc-demangle = "0.1.4"
 memmap = "0.6"
+log = "0.4.5"
+libc = "0.2.43"
+jobserver = "0.1.11"
+
+serialize = { path = "../libserialize" }
+syntax = { path = "../libsyntax" }
+syntax_pos = { path = "../libsyntax_pos" }
+rustc = { path = "../librustc" }
+rustc_allocator = { path = "../librustc_allocator" }
+rustc_apfloat = { path = "../librustc_apfloat" }
+rustc_codegen_utils = { path = "../librustc_codegen_utils" }
+rustc_data_structures = { path = "../librustc_data_structures"}
+rustc_errors = { path = "../librustc_errors" }
+rustc_fs_util = { path = "../librustc_fs_util" }
+rustc_incremental = { path = "../librustc_incremental" }
+rustc_mir = { path = "../librustc_mir" }
+rustc_target = { path = "../librustc_target" }
--- a/src/librustc_codegen_ssa/mir/operand.rs
+++ b/src/librustc_codegen_ssa/mir/operand.rs
@ -244,13 +244,24 @@ impl<'a, 'tcx: 'a, V: CodegenObject> OperandRef<'tcx, V> {
        };

        // HACK(eddyb) have to bitcast pointers until LLVM removes pointee types.
+        // Bools in union fields needs to be truncated.
+        let to_immediate_or_cast = |bx: &mut Bx, val, ty| {
+            if ty == bx.cx().type_i1() {
+                bx.trunc(val, ty)
+            } else {
+                bx.bitcast(val, ty)
+            }
+        };
+
        match val {
            OperandValue::Immediate(ref mut llval) => {
-                *llval = bx.bitcast(*llval, bx.cx().immediate_backend_type(field));
+                *llval = to_immediate_or_cast(bx, *llval, bx.cx().immediate_backend_type(field));
            }
            OperandValue::Pair(ref mut a, ref mut b) => {
-                *a = bx.bitcast(*a, bx.cx().scalar_pair_element_backend_type(field, 0, true));
-                *b = bx.bitcast(*b, bx.cx().scalar_pair_element_backend_type(field, 1, true));
+                *a = to_immediate_or_cast(bx, *a, bx.cx()
+                    .scalar_pair_element_backend_type(field, 0, true));
+                *b = to_immediate_or_cast(bx, *b, bx.cx()
+                    .scalar_pair_element_backend_type(field, 1, true));
            }
            OperandValue::Ref(..) => bug!()
        }
--- a/src/librustc_data_structures/macros.rs
+++ b/src/librustc_data_structures/macros.rs
@ -11,11 +11,12 @@
 /// A simple static assertion macro. The first argument should be a unique
 /// ALL_CAPS identifier that describes the condition.
 #[macro_export]
+#[allow_internal_unstable]
 macro_rules! static_assert {
    ($name:ident: $test:expr) => {
        // Use the bool to access an array such that if the bool is false, the access
        // is out-of-bounds.
        #[allow(dead_code)]
-        static $name: () = [()][!$test as usize];
+        static $name: () = [()][!($test: bool) as usize];
    }
 }
--- a/src/librustc_mir/interpret/eval_context.rs
+++ b/src/librustc_mir/interpret/eval_context.rs
@ -504,15 +504,14 @@ impl<'a, 'mir, 'tcx: 'mir, M: Machine<'a, 'mir, 'tcx>> EvalContext<'a, 'mir, 'tc
        let frame = self.stack.pop().expect(
            "tried to pop a stack frame, but there were none",
        );
+        // Abort early if we do not want to clean up: We also avoid validation in that case,
+        // because this is CTFE and the final value will be thoroughly validated anyway.
        match frame.return_to_block {
-            StackPopCleanup::Goto(block) => {
-                self.goto_block(block)?;
-            }
+            StackPopCleanup::Goto(_) => {},
            StackPopCleanup::None { cleanup } => {
                if !cleanup {
-                    // Leak the locals. Also skip validation, this is only used by
-                    // static/const computation which does its own (stronger) final
-                    // validation.
+                    assert!(self.stack.is_empty(), "only the topmost frame should ever be leaked");
+                    // Leak the locals, skip validation.
                    return Ok(());
                }
            }
@ -521,7 +520,8 @@ impl<'a, 'mir, 'tcx: 'mir, M: Machine<'a, 'mir, 'tcx>> EvalContext<'a, 'mir, 'tc
        for local in frame.locals {
            self.deallocate_local(local)?;
        }
-        // Validate the return value.
+        // Validate the return value. Do this after deallocating so that we catch dangling
+        // references.
        if let Some(return_place) = frame.return_place {
            if M::enforce_validity(self) {
                // Data got changed, better make sure it matches the type!
@ -542,6 +542,13 @@ impl<'a, 'mir, 'tcx: 'mir, M: Machine<'a, 'mir, 'tcx>> EvalContext<'a, 'mir, 'tc
            // Uh, that shouldn't happen... the function did not intend to return
            return err!(Unreachable);
        }
+        // Jump to new block -- *after* validation so that the spans make more sense.
+        match frame.return_to_block {
+            StackPopCleanup::Goto(block) => {
+                self.goto_block(block)?;
+            }
+            StackPopCleanup::None { .. } => {}
+        }

        if self.stack.len() > 1 { // FIXME should be "> 0", printing topmost frame crashes rustc...
            debug!("CONTINUING({}) {}", self.cur_frame(), self.frame().instance);
--- a/src/librustc_target/spec/fuchsia_base.rs
+++ b/src/librustc_target/spec/fuchsia_base.rs
@ -12,9 +12,11 @@ use spec::{LldFlavor, LinkArgs, LinkerFlavor, TargetOptions};
 use std::default::Default;

 pub fn opts() -> TargetOptions {
-    let mut args = LinkArgs::new();
-    args.insert(LinkerFlavor::Lld(LldFlavor::Ld), vec![
-        "--build-id".to_string(), "--hash-style=gnu".to_string(),
+    let mut pre_link_args = LinkArgs::new();
+    pre_link_args.insert(LinkerFlavor::Lld(LldFlavor::Ld), vec![
+        "--build-id".to_string(),
+        "--eh-frame-hdr".to_string(),
+        "--hash-style=gnu".to_string(),
        "-z".to_string(), "rodynamic".to_string(),
    ]);

@ -24,9 +26,13 @@ pub fn opts() -> TargetOptions {
        dynamic_linking: true,
        executables: true,
        target_family: Some("unix".to_string()),
+        is_like_fuchsia: true,
        linker_is_gnu: true,
        has_rpath: false,
-        pre_link_args: args,
+        pre_link_args: pre_link_args,
+        pre_link_objects_exe: vec![
+            "Scrt1.o".to_string()
+        ],
        position_independent_executables: true,
        has_elf_tls: true,
        .. Default::default()
--- a/src/librustc_target/spec/mod.rs
+++ b/src/librustc_target/spec/mod.rs
@ -560,6 +560,8 @@ pub struct TargetOptions {
    /// Emscripten toolchain.
    /// Defaults to false.
    pub is_like_emscripten: bool,
+    /// Whether the target toolchain is like Fuchsia's.
+    pub is_like_fuchsia: bool,
    /// Whether the linker support GNU-like arguments such as -O. Defaults to false.
    pub linker_is_gnu: bool,
    /// The MinGW toolchain has a known issue that prevents it from correctly
@ -729,6 +731,7 @@ impl Default for TargetOptions {
            is_like_android: false,
            is_like_emscripten: false,
            is_like_msvc: false,
+            is_like_fuchsia: false,
            linker_is_gnu: false,
            allows_weak_linkage: true,
            has_rpath: false,
@ -1028,6 +1031,7 @@ impl Target {
        key!(is_like_msvc, bool);
        key!(is_like_emscripten, bool);
        key!(is_like_android, bool);
+        key!(is_like_fuchsia, bool);
        key!(linker_is_gnu, bool);
        key!(allows_weak_linkage, bool);
        key!(has_rpath, bool);
@ -1238,6 +1242,7 @@ impl ToJson for Target {
        target_option_val!(is_like_msvc);
        target_option_val!(is_like_emscripten);
        target_option_val!(is_like_android);
+        target_option_val!(is_like_fuchsia);
        target_option_val!(linker_is_gnu);
        target_option_val!(allows_weak_linkage);
        target_option_val!(has_rpath);
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@ -1571,7 +1571,7 @@ impl<K, V, S> HashMap<K, V, S>
    /// so that the map now contains keys which compare equal, search may start
    /// acting erratically, with two keys randomly masking each other. Implementations
    /// are free to assume this doesn't happen (within the limits of memory-safety).
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn raw_entry_mut(&mut self) -> RawEntryBuilderMut<K, V, S> {
        self.reserve(1);
        RawEntryBuilderMut { map: self }
@ -1592,7 +1592,7 @@ impl<K, V, S> HashMap<K, V, S>
    /// `get` should be preferred.
    ///
    /// Immutable raw entries have very limited use; you might instead want `raw_entry_mut`.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn raw_entry(&self) -> RawEntryBuilder<K, V, S> {
        RawEntryBuilder { map: self }
    }
@ -1844,7 +1844,7 @@ impl<'a, K, V> InternalEntry<K, V, &'a mut RawTable<K, V>> {
 ///
 /// [`HashMap::raw_entry_mut`]: struct.HashMap.html#method.raw_entry_mut

-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 pub struct RawEntryBuilderMut<'a, K: 'a, V: 'a, S: 'a> {
    map: &'a mut HashMap<K, V, S>,
 }
@ -1858,7 +1858,7 @@ pub struct RawEntryBuilderMut<'a, K: 'a, V: 'a, S: 'a> {
 /// [`HashMap`]: struct.HashMap.html
 /// [`Entry`]: enum.Entry.html
 /// [`raw_entry`]: struct.HashMap.html#method.raw_entry
-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 pub enum RawEntryMut<'a, K: 'a, V: 'a, S: 'a> {
    /// An occupied entry.
    Occupied(RawOccupiedEntryMut<'a, K, V>),
@ -1870,7 +1870,7 @@ pub enum RawEntryMut<'a, K: 'a, V: 'a, S: 'a> {
 /// It is part of the [`RawEntryMut`] enum.
 ///
 /// [`RawEntryMut`]: enum.RawEntryMut.html
-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 pub struct RawOccupiedEntryMut<'a, K: 'a, V: 'a> {
    elem: FullBucket<K, V, &'a mut RawTable<K, V>>,
 }
@ -1879,7 +1879,7 @@ pub struct RawOccupiedEntryMut<'a, K: 'a, V: 'a> {
 /// It is part of the [`RawEntryMut`] enum.
 ///
 /// [`RawEntryMut`]: enum.RawEntryMut.html
-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 pub struct RawVacantEntryMut<'a, K: 'a, V: 'a, S: 'a> {
    elem: VacantEntryState<K, V, &'a mut RawTable<K, V>>,
    hash_builder: &'a S,
@ -1890,7 +1890,7 @@ pub struct RawVacantEntryMut<'a, K: 'a, V: 'a, S: 'a> {
 /// See the [`HashMap::raw_entry`] docs for usage examples.
 ///
 /// [`HashMap::raw_entry`]: struct.HashMap.html#method.raw_entry
-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 pub struct RawEntryBuilder<'a, K: 'a, V: 'a, S: 'a> {
    map: &'a HashMap<K, V, S>,
 }
@ -1900,7 +1900,7 @@ impl<'a, K, V, S> RawEntryBuilderMut<'a, K, V, S>
          K: Eq + Hash,
 {
    /// Create a `RawEntryMut` from the given key.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn from_key<Q: ?Sized>(self, k: &Q) -> RawEntryMut<'a, K, V, S>
        where K: Borrow<Q>,
              Q: Hash + Eq
@ -1911,7 +1911,7 @@ impl<'a, K, V, S> RawEntryBuilderMut<'a, K, V, S>
    }

    /// Create a `RawEntryMut` from the given key and its hash.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn from_key_hashed_nocheck<Q: ?Sized>(self, hash: u64, k: &Q) -> RawEntryMut<'a, K, V, S>
        where K: Borrow<Q>,
              Q: Eq
@ -1941,7 +1941,7 @@ impl<'a, K, V, S> RawEntryBuilderMut<'a, K, V, S>
        }
    }
    /// Create a `RawEntryMut` from the given hash.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn from_hash<F>(self, hash: u64, is_match: F) -> RawEntryMut<'a, K, V, S>
        where for<'b> F: FnMut(&'b K) -> bool,
    {
@ -1951,7 +1951,7 @@ impl<'a, K, V, S> RawEntryBuilderMut<'a, K, V, S>
    /// Search possible locations for an element with hash `hash` until `is_match` returns true for
    /// one of them. There is no guarantee that all keys passed to `is_match` will have the provided
    /// hash.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn search_bucket<F>(self, hash: u64, is_match: F) -> RawEntryMut<'a, K, V, S>
        where for<'b> F: FnMut(&'b K) -> bool,
    {
@ -1963,7 +1963,7 @@ impl<'a, K, V, S> RawEntryBuilder<'a, K, V, S>
    where S: BuildHasher,
 {
    /// Access an entry by key.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn from_key<Q: ?Sized>(self, k: &Q) -> Option<(&'a K, &'a V)>
        where K: Borrow<Q>,
              Q: Hash + Eq
@ -1974,7 +1974,7 @@ impl<'a, K, V, S> RawEntryBuilder<'a, K, V, S>
    }

    /// Access an entry by a key and its hash.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn from_key_hashed_nocheck<Q: ?Sized>(self, hash: u64, k: &Q) -> Option<(&'a K, &'a V)>
        where K: Borrow<Q>,
              Q: Hash + Eq
@ -1997,7 +1997,7 @@ impl<'a, K, V, S> RawEntryBuilder<'a, K, V, S>
    }

    /// Access an entry by hash.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn from_hash<F>(self, hash: u64, is_match: F) -> Option<(&'a K, &'a V)>
        where F: FnMut(&K) -> bool
    {
@ -2007,7 +2007,7 @@ impl<'a, K, V, S> RawEntryBuilder<'a, K, V, S>
    /// Search possible locations for an element with hash `hash` until `is_match` returns true for
    /// one of them. There is no guarantee that all keys passed to `is_match` will have the provided
    /// hash.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn search_bucket<F>(self, hash: u64, is_match: F) -> Option<(&'a K, &'a V)>
        where F: FnMut(&K) -> bool
    {
@ -2033,7 +2033,7 @@ impl<'a, K, V, S> RawEntryMut<'a, K, V, S> {
    /// *map.raw_entry_mut().from_key("poneyland").or_insert("poneyland", 10).1 *= 2;
    /// assert_eq!(map["poneyland"], 6);
    /// ```
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn or_insert(self, default_key: K, default_val: V) -> (&'a mut K, &'a mut V)
        where K: Hash,
              S: BuildHasher,
@ -2061,7 +2061,7 @@ impl<'a, K, V, S> RawEntryMut<'a, K, V, S> {
    ///
    /// assert_eq!(map["poneyland"], "hoho".to_string());
    /// ```
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn or_insert_with<F>(self, default: F) -> (&'a mut K, &'a mut V)
        where F: FnOnce() -> (K, V),
              K: Hash,
@ -2099,7 +2099,7 @@ impl<'a, K, V, S> RawEntryMut<'a, K, V, S> {
    ///    .or_insert("poneyland", 0);
    /// assert_eq!(map["poneyland"], 43);
    /// ```
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn and_modify<F>(self, f: F) -> Self
        where F: FnOnce(&mut K, &mut V)
    {
@ -2118,82 +2118,82 @@ impl<'a, K, V, S> RawEntryMut<'a, K, V, S> {

 impl<'a, K, V> RawOccupiedEntryMut<'a, K, V> {
    /// Gets a reference to the key in the entry.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn key(&self) -> &K {
        self.elem.read().0
    }

    /// Gets a mutable reference to the key in the entry.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn key_mut(&mut self) -> &mut K {
        self.elem.read_mut().0
    }

    /// Converts the entry into a mutable reference to the key in the entry
    /// with a lifetime bound to the map itself.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn into_key(self) -> &'a mut K {
        self.elem.into_mut_refs().0
    }

    /// Gets a reference to the value in the entry.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn get(&self) -> &V {
        self.elem.read().1
    }

    /// Converts the OccupiedEntry into a mutable reference to the value in the entry
    /// with a lifetime bound to the map itself.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn into_mut(self) -> &'a mut V {
        self.elem.into_mut_refs().1
    }

    /// Gets a mutable reference to the value in the entry.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn get_mut(&mut self) -> &mut V {
        self.elem.read_mut().1
    }

    /// Gets a reference to the key and value in the entry.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn get_key_value(&mut self) -> (&K, &V) {
        self.elem.read()
    }

    /// Gets a mutable reference to the key and value in the entry.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn get_key_value_mut(&mut self) -> (&mut K, &mut V) {
        self.elem.read_mut()
    }

    /// Converts the OccupiedEntry into a mutable reference to the key and value in the entry
    /// with a lifetime bound to the map itself.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn into_key_value(self) -> (&'a mut K, &'a mut V) {
        self.elem.into_mut_refs()
    }

    /// Sets the value of the entry, and returns the entry's old value.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn insert(&mut self, value: V) -> V {
        mem::replace(self.get_mut(), value)
    }

    /// Sets the value of the entry, and returns the entry's old value.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn insert_key(&mut self, key: K) -> K {
        mem::replace(self.key_mut(), key)
    }

    /// Takes the value out of the entry, and returns it.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn remove(self) -> V {
        pop_internal(self.elem).1
    }

    /// Take the ownership of the key and value from the map.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn remove_entry(self) -> (K, V) {
        let (k, v, _) = pop_internal(self.elem);
        (k, v)
@ -2203,7 +2203,7 @@ impl<'a, K, V> RawOccupiedEntryMut<'a, K, V> {
 impl<'a, K, V, S> RawVacantEntryMut<'a, K, V, S> {
    /// Sets the value of the entry with the VacantEntry's key,
    /// and returns a mutable reference to it.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn insert(self, key: K, value: V) -> (&'a mut K, &'a mut V)
        where K: Hash,
              S: BuildHasher,
@ -2215,7 +2215,7 @@ impl<'a, K, V, S> RawVacantEntryMut<'a, K, V, S> {

    /// Sets the value of the entry with the VacantEntry's key,
    /// and returns a mutable reference to it.
-    #[unstable(feature = "hash_raw_entry", issue = "54043")]
+    #[unstable(feature = "hash_raw_entry", issue = "56167")]
    pub fn insert_hashed_nocheck(self, hash: u64, key: K, value: V) -> (&'a mut K, &'a mut V) {
        let hash = SafeHash::new(hash);
        let b = match self.elem {
@ -2236,7 +2236,7 @@ impl<'a, K, V, S> RawVacantEntryMut<'a, K, V, S> {
    }
 }

-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 impl<'a, K, V, S> Debug for RawEntryBuilderMut<'a, K, V, S> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.debug_struct("RawEntryBuilder")
@ -2244,7 +2244,7 @@ impl<'a, K, V, S> Debug for RawEntryBuilderMut<'a, K, V, S> {
    }
 }

-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 impl<'a, K: Debug, V: Debug, S> Debug for RawEntryMut<'a, K, V, S> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match *self {
@ -2262,7 +2262,7 @@ impl<'a, K: Debug, V: Debug, S> Debug for RawEntryMut<'a, K, V, S> {
    }
 }

-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 impl<'a, K: Debug, V: Debug> Debug for RawOccupiedEntryMut<'a, K, V> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.debug_struct("RawOccupiedEntryMut")
@ -2272,7 +2272,7 @@ impl<'a, K: Debug, V: Debug> Debug for RawOccupiedEntryMut<'a, K, V> {
    }
 }

-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 impl<'a, K, V, S> Debug for RawVacantEntryMut<'a, K, V, S> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.debug_struct("RawVacantEntryMut")
@ -2280,7 +2280,7 @@ impl<'a, K, V, S> Debug for RawVacantEntryMut<'a, K, V, S> {
    }
 }

-#[unstable(feature = "hash_raw_entry", issue = "54043")]
+#[unstable(feature = "hash_raw_entry", issue = "56167")]
 impl<'a, K, V, S> Debug for RawEntryBuilder<'a, K, V, S> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.debug_struct("RawEntryBuilder")
--- a/src/rustc/Cargo.toml
+++ b/src/rustc/Cargo.toml
@ -11,5 +11,9 @@ path = "rustc.rs"
 rustc_target = { path = "../librustc_target" }
 rustc_driver = { path = "../librustc_driver" }

+# Make sure rustc_codegen_ssa ends up in the sysroot, because this
+# crate is intended to be used by codegen backends, which may not be in-tree.
+rustc_codegen_ssa = { path = "../librustc_codegen_ssa" }
+
 [features]
 jemalloc = ['rustc_driver/jemalloc-sys']
--- a/src/test/codegen/union-abi.rs
+++ b/src/test/codegen/union-abi.rs
@ -78,3 +78,9 @@ pub union CUnionU128{a:u128}
 #[no_mangle]
 pub fn test_CUnionU128(_: CUnionU128) { loop {} }

+pub union UnionBool { b:bool }
+// CHECK: define zeroext i1 @test_UnionBool(i8 %b)
+#[no_mangle]
+pub fn test_UnionBool(b: UnionBool) -> bool { unsafe { b.b }  }
+// CHECK: %0 = trunc i8 %b to i1
+
--- a/src/test/debuginfo/gdb-pretty-struct-and-enums-pre-gdb-7-7.rs
+++ b/src/test/debuginfo/gdb-pretty-struct-and-enums-pre-gdb-7-7.rs
@ -8,34 +8,34 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.

-// ignore-bitrig
-// ignore-solaris
-// ignore-windows failing on win32 bot
-// ignore-freebsd: gdb package too new
 // ignore-tidy-linelength
 // ignore-lldb
 // ignore-android: FIXME(#10381)
+// min-gdb-version: 7.11
+
 // compile-flags:-g

 // gdb-command: run

 // gdb-command: print regular_struct
-// gdb-check:$1 = RegularStruct = {the_first_field = 101, the_second_field = 102.5, the_third_field = false}
+// gdbg-check:$1 = RegularStruct = {the_first_field = 101, the_second_field = 102.5, the_third_field = false}
+// gdbr-check:$1 = gdb_pretty_struct_and_enums::RegularStruct {the_first_field: 101, the_second_field: 102.5, the_third_field: false}

 // gdb-command: print empty_struct
-// gdb-check:$2 = EmptyStruct
+// gdbg-check:$2 = EmptyStruct
+// gdbr-check:$2 = gdb_pretty_struct_and_enums::EmptyStruct

 // gdb-command: print c_style_enum1
 // gdbg-check:$3 = CStyleEnumVar1
-// gdbr-check:$3 = gdb_pretty_struct_and_enums_pre_gdb_7_7::CStyleEnum::CStyleEnumVar1
+// gdbr-check:$3 = gdb_pretty_struct_and_enums::CStyleEnum::CStyleEnumVar1

 // gdb-command: print c_style_enum2
 // gdbg-check:$4 = CStyleEnumVar2
-// gdbr-check:$4 = gdb_pretty_struct_and_enums_pre_gdb_7_7::CStyleEnum::CStyleEnumVar2
+// gdbr-check:$4 = gdb_pretty_struct_and_enums::CStyleEnum::CStyleEnumVar2

 // gdb-command: print c_style_enum3
 // gdbg-check:$5 = CStyleEnumVar3
-// gdbr-check:$5 = gdb_pretty_struct_and_enums_pre_gdb_7_7::CStyleEnum::CStyleEnumVar3
+// gdbr-check:$5 = gdb_pretty_struct_and_enums::CStyleEnum::CStyleEnumVar3

 #![allow(dead_code, unused_variables)]

--- a/src/test/ui-fulldeps/auxiliary/subspan.rs
+++ b/src/test/ui-fulldeps/auxiliary/subspan.rs
@ -0,0 +1,47 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+#![feature(proc_macro_diagnostic, proc_macro_span)]
+
+extern crate proc_macro;
+
+use proc_macro::{TokenStream, TokenTree, Span, Diagnostic};
+
+fn parse(input: TokenStream) -> Result<(), Diagnostic> {
+    if let Some(TokenTree::Literal(lit)) = input.into_iter().next() {
+        let mut spans = vec![];
+        let string = lit.to_string();
+        for hi in string.matches("hi") {
+            let index = hi.as_ptr() as usize - string.as_ptr() as usize;
+            let subspan = lit.subspan(index..(index + hi.len())).unwrap();
+            spans.push(subspan);
+        }
+
+        if !spans.is_empty() {
+            Err(Span::call_site().error("found 'hi's").span_note(spans, "here"))
+        } else {
+            Ok(())
+        }
+    } else {
+        Err(Span::call_site().error("invalid input: expected string literal"))
+    }
+}
+
+#[proc_macro]
+pub fn subspan(input: TokenStream) -> TokenStream {
+    if let Err(diag) = parse(input) {
+        diag.emit();
+    }
+
+    TokenStream::new()
+}
--- a/src/test/ui-fulldeps/subspan.rs
+++ b/src/test/ui-fulldeps/subspan.rs
@ -0,0 +1,37 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// aux-build:subspan.rs
+// ignore-stage1
+
+extern crate subspan;
+
+use subspan::subspan;
+
+// This one emits no error.
+subspan!("");
+
+// Exactly one 'hi'.
+subspan!("hi"); //~ ERROR found 'hi's
+
+// Now two, back to back.
+subspan!("hihi"); //~ ERROR found 'hi's
+
+// Now three, back to back.
+subspan!("hihihi"); //~ ERROR found 'hi's
+
+// Now several, with spacing.
+subspan!("why I hide? hi!"); //~ ERROR found 'hi's
+subspan!("hey, hi, hidy, hidy, hi hi"); //~ ERROR found 'hi's
+subspan!("this is a hi, and this is another hi"); //~ ERROR found 'hi's
+subspan!("how are you this evening"); //~ ERROR found 'hi's
+subspan!("this is highly eradic"); //~ ERROR found 'hi's
+
+fn main() { }
--- a/src/test/ui-fulldeps/subspan.stderr
+++ b/src/test/ui-fulldeps/subspan.stderr
@ -0,0 +1,98 @@
+error: found 'hi's
+  --> $DIR/subspan.rs:22:1
+   |
+LL | subspan!("hi"); //~ ERROR found 'hi's
+   | ^^^^^^^^^^^^^^^
+   |
+note: here
+  --> $DIR/subspan.rs:22:11
+   |
+LL | subspan!("hi"); //~ ERROR found 'hi's
+   |           ^^
+
+error: found 'hi's
+  --> $DIR/subspan.rs:25:1
+   |
+LL | subspan!("hihi"); //~ ERROR found 'hi's
+   | ^^^^^^^^^^^^^^^^^
+   |
+note: here
+  --> $DIR/subspan.rs:25:11
+   |
+LL | subspan!("hihi"); //~ ERROR found 'hi's
+   |           ^^^^
+
+error: found 'hi's
+  --> $DIR/subspan.rs:28:1
+   |
+LL | subspan!("hihihi"); //~ ERROR found 'hi's
+   | ^^^^^^^^^^^^^^^^^^^
+   |
+note: here
+  --> $DIR/subspan.rs:28:11
+   |
+LL | subspan!("hihihi"); //~ ERROR found 'hi's
+   |           ^^^^^^
+
+error: found 'hi's
+  --> $DIR/subspan.rs:31:1
+   |
+LL | subspan!("why I hide? hi!"); //~ ERROR found 'hi's
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: here
+  --> $DIR/subspan.rs:31:17
+   |
+LL | subspan!("why I hide? hi!"); //~ ERROR found 'hi's
+   |                 ^^    ^^
+
+error: found 'hi's
+  --> $DIR/subspan.rs:32:1
+   |
+LL | subspan!("hey, hi, hidy, hidy, hi hi"); //~ ERROR found 'hi's
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: here
+  --> $DIR/subspan.rs:32:16
+   |
+LL | subspan!("hey, hi, hidy, hidy, hi hi"); //~ ERROR found 'hi's
+   |                ^^  ^^    ^^    ^^ ^^
+
+error: found 'hi's
+  --> $DIR/subspan.rs:33:1
+   |
+LL | subspan!("this is a hi, and this is another hi"); //~ ERROR found 'hi's
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: here
+  --> $DIR/subspan.rs:33:12
+   |
+LL | subspan!("this is a hi, and this is another hi"); //~ ERROR found 'hi's
+   |            ^^       ^^       ^^             ^^
+
+error: found 'hi's
+  --> $DIR/subspan.rs:34:1
+   |
+LL | subspan!("how are you this evening"); //~ ERROR found 'hi's
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: here
+  --> $DIR/subspan.rs:34:24
+   |
+LL | subspan!("how are you this evening"); //~ ERROR found 'hi's
+   |                        ^^
+
+error: found 'hi's
+  --> $DIR/subspan.rs:35:1
+   |
+LL | subspan!("this is highly eradic"); //~ ERROR found 'hi's
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: here
+  --> $DIR/subspan.rs:35:12
+   |
+LL | subspan!("this is highly eradic"); //~ ERROR found 'hi's
+   |            ^^     ^^
+
+error: aborting due to 8 previous errors
+