Auto merge of #39645 - frewsxcv:rollup, r=frewsxcv

Rollup of 11 pull requests

- Successful merges: #39462, #39512, #39529, #39557, #39561, #39582, #39583, #39597, #39622, #39624, #39630
- Failed merges:

6 files changed, 108 insertions, 10 deletions

diff --git a/src/test/compile-fail/lint-ctypes.rs b/src/test/compile-fail/lint-ctypes.rs
index ccc25b58228..608b1eb0872 100644
--- a/src/test/compile-fail/lint-ctypes.rs
+++ b/src/test/compile-fail/lint-ctypes.rs
@@ -29,6 +29,9 @@ pub type RustBadRet = extern fn() -> Box<u32>;
 pub type CVoidRet = ();
 pub struct Foo;
 
+#[repr(C)]
+pub struct ZeroSizeWithPhantomData(::std::marker::PhantomData<i32>);
+
 extern {
     pub fn ptr_type1(size: *const Foo); //~ ERROR: found struct without
     pub fn ptr_type2(size: *const Foo); //~ ERROR: found struct without
@@ -40,6 +43,9 @@ extern {
     pub fn tuple_type(p: (i32, i32)); //~ ERROR found Rust tuple type
     pub fn tuple_type2(p: I32Pair); //~ ERROR found Rust tuple type
     pub fn zero_size(p: ZeroSize); //~ ERROR found zero-size struct
+    pub fn zero_size_phantom(p: ZeroSizeWithPhantomData); //~ ERROR found zero-sized type
+    pub fn zero_size_phantom_toplevel()
+        -> ::std::marker::PhantomData<bool>; //~ ERROR: found zero-sized type
     pub fn fn_type(p: RustFn); //~ ERROR found function pointer with Rust
     pub fn fn_type2(p: fn()); //~ ERROR found function pointer with Rust
     pub fn fn_contained(p: RustBadRet); //~ ERROR: found struct without
diff --git a/src/test/incremental/issue-39569.rs b/src/test/incremental/issue-39569.rs
new file mode 100644
index 00000000000..5b53e948253
--- /dev/null
+++ b/src/test/incremental/issue-39569.rs
@@ -0,0 +1,38 @@
+// Copyright 2014 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.
+
+// Regression test for a weird corner case in our dep-graph reduction
+// code. When we solve `CoerceUnsized<Foo>`, we find no impls, so we
+// don't end up with an edge to any HIR nodes, but it still gets
+// preserved in the dep graph.
+
+// revisions:rpass1 rpass2
+// compile-flags: -Z query-dep-graph
+
+use std::sync::Arc;
+
+#[cfg(rpass1)]
+struct Foo { x: usize }
+
+#[cfg(rpass1)]
+fn main() {
+    let x: Arc<Foo> = Arc::new(Foo { x: 22 });
+    let y: Arc<Foo> = x;
+}
+
+#[cfg(rpass2)]
+struct FooX { x: usize }
+
+#[cfg(rpass2)]
+fn main() {
+    let x: Arc<FooX> = Arc::new(FooX { x: 22 });
+    let y: Arc<FooX> = x;
+}
+
diff --git a/src/test/run-pass/issue-34798.rs b/src/test/run-pass/issue-34798.rs
new file mode 100644
index 00000000000..e217d07ed72
--- /dev/null
+++ b/src/test/run-pass/issue-34798.rs
@@ -0,0 +1,34 @@
+// Copyright 2017 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.
+
+#![forbid(improper_ctypes)]
+#![allow(dead_code)]
+
+#[repr(C)]
+pub struct Foo {
+    size: u8,
+    __value: ::std::marker::PhantomData<i32>,
+}
+
+#[repr(C)]
+pub struct ZeroSizeWithPhantomData<T>(::std::marker::PhantomData<T>);
+
+#[repr(C)]
+pub struct Bar {
+    size: u8,
+    baz: ZeroSizeWithPhantomData<i32>,
+}
+
+extern "C" {
+    pub fn bar(_: *mut Foo, _: *mut Bar);
+}
+
+fn main() {
+}
diff --git a/src/test/run-pass/try-wait.rs b/src/test/run-pass/try-wait.rs
index d9826373cce..be87b7b3c87 100644
--- a/src/test/run-pass/try-wait.rs
+++ b/src/test/run-pass/try-wait.rs
@@ -13,7 +13,6 @@
 #![feature(process_try_wait)]
 
 use std::env;
-use std::io;
 use std::process::Command;
 use std::thread;
 use std::time::Duration;
@@ -32,17 +31,17 @@ fn main() {
                          .arg("sleep")
                          .spawn()
                          .unwrap();
-    let err = me.try_wait().unwrap_err();
-    assert_eq!(err.kind(), io::ErrorKind::WouldBlock);
-    let err = me.try_wait().unwrap_err();
-    assert_eq!(err.kind(), io::ErrorKind::WouldBlock);
+    let maybe_status = me.try_wait().unwrap();
+    assert!(maybe_status.is_none());
+    let maybe_status = me.try_wait().unwrap();
+    assert!(maybe_status.is_none());
 
     me.kill().unwrap();
     me.wait().unwrap();
 
-    let status = me.try_wait().unwrap();
+    let status = me.try_wait().unwrap().unwrap();
     assert!(!status.success());
-    let status = me.try_wait().unwrap();
+    let status = me.try_wait().unwrap().unwrap();
     assert!(!status.success());
 
     let mut me = Command::new(env::current_exe().unwrap())
@@ -51,17 +50,17 @@ fn main() {
                          .unwrap();
     loop {
         match me.try_wait() {
-            Ok(res) => {
+            Ok(Some(res)) => {
                 assert!(res.success());
                 break
             }
-            Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
+            Ok(None) => {
                 thread::sleep(Duration::from_millis(1));
             }
             Err(e) => panic!("error in try_wait: {}", e),
         }
     }
 
-    let status = me.try_wait().unwrap();
+    let status = me.try_wait().unwrap().unwrap();
     assert!(status.success());
 }
diff --git a/src/test/rustdoc/test_option_check/bar.rs b/src/test/rustdoc/test_option_check/bar.rs
new file mode 100644
index 00000000000..51daa807526
--- /dev/null
+++ b/src/test/rustdoc/test_option_check/bar.rs
@@ -0,0 +1,19 @@
+// Copyright 2017 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.
+
+// compile-flags: --test
+// check-test-line-numbers-match
+
+/// This looks like another awesome test!
+///
+/// ```
+/// println!("foo?");
+/// ```
+pub fn foooo() {}
diff --git a/src/test/rustdoc/test_option_check/test.rs b/src/test/rustdoc/test_option_check/test.rs
index b2afe43204d..a9578c5f434 100644
--- a/src/test/rustdoc/test_option_check/test.rs
+++ b/src/test/rustdoc/test_option_check/test.rs
@@ -11,6 +11,8 @@
 // compile-flags: --test
 // check-test-line-numbers-match
 
+pub mod bar;
+
 /// This is a Foo;
 ///
 /// ```