Auto merge of #46745 - steveklabnik:rollup, r=steveklabnik

Rollup of 7 pull requests

- Successful merges: #46601, #46652, #46690, #46705, #46710, #46728, #46737
- Failed merges:

Author: bors

src/libcore/iter/iterator.rs

@@ -621,27 +621,24 @@ pub trait Iterator {
     /// Basic usage:
     ///
     /// ```
-    /// let a = ["1", "2", "lol"];
+    /// let a = ["1", "lol", "3", "NaN", "5"];
     ///
     /// let mut iter = a.iter().filter_map(|s| s.parse().ok());
     ///
     /// assert_eq!(iter.next(), Some(1));
-    /// assert_eq!(iter.next(), Some(2));
+    /// assert_eq!(iter.next(), Some(3));
+    /// assert_eq!(iter.next(), Some(5));
     /// assert_eq!(iter.next(), None);
     /// ```
     ///
     /// Here's the same example, but with [`filter`] and [`map`]:
     ///
     /// ```
-    /// let a = ["1", "2", "lol"];
-    ///
-    /// let mut iter = a.iter()
-    ///                 .map(|s| s.parse())
-    ///                 .filter(|s| s.is_ok())
-    ///                 .map(|s| s.unwrap());
-    ///
+    /// let a = ["1", "lol", "3", "NaN", "5"];
+    /// let mut iter = a.iter().map(|s| s.parse()).filter(|s| s.is_ok()).map(|s| s.unwrap());
     /// assert_eq!(iter.next(), Some(1));
-    /// assert_eq!(iter.next(), Some(2));
+    /// assert_eq!(iter.next(), Some(3));
+    /// assert_eq!(iter.next(), Some(5));
     /// assert_eq!(iter.next(), None);
     /// ```
     ///

src/libcore/ops/deref.rs

@@ -35,13 +35,13 @@
 ///
 /// For more details, visit [the chapter in *The Rust Programming Language*]
 /// [book] as well as the reference sections on [the dereference operator]
-/// [ref-deref-op], [the `Deref` trait][ref-deref-trait], and [type coercions].
+/// [ref-deref-op], [method resolution] and [type coercions].
 ///
 /// [book]: ../../book/second-edition/ch15-02-deref.html
 /// [`DerefMut`]: trait.DerefMut.html
 /// [more]: #more-on-deref-coercion
 /// [ref-deref-op]: ../../reference/expressions/operator-expr.html#the-dereference-operator
-/// [ref-deref-trait]: ../../reference/the-deref-trait.html
+/// [method resolution]: ../../reference/expressions/method-call-expr.html
 /// [type coercions]: ../../reference/type-coercions.html
 ///
 /// # Examples
@@ -122,13 +122,13 @@ impl<'a, T: ?Sized> Deref for &'a mut T {
 ///
 /// For more details, visit [the chapter in *The Rust Programming Language*]
 /// [book] as well as the reference sections on [the dereference operator]
-/// [ref-deref-op], [the `Deref` trait][ref-deref-trait], and [type coercions].
+/// [ref-deref-op], [method resolution] and [type coercions].
 ///
 /// [book]: ../../book/second-edition/ch15-02-deref.html
 /// [`Deref`]: trait.Deref.html
 /// [more]: #more-on-deref-coercion
 /// [ref-deref-op]: ../../reference/expressions/operator-expr.html#the-dereference-operator
-/// [ref-deref-trait]: ../../reference/the-deref-trait.html
+/// [method resolution]: ../../reference/expressions/method-call-expr.html
 /// [type coercions]: ../../reference/type-coercions.html
 ///
 /// # Examples

src/libproc_macro/lib.rs

@@ -265,10 +265,12 @@ impl Span {
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
 pub struct LineColumn {
     /// The 1-indexed line in the source file on which the span starts or ends (inclusive).
-    line: usize,
+    #[unstable(feature = "proc_macro", issue = "38356")]
+    pub line: usize,
     /// The 0-indexed column (in UTF-8 characters) in the source file on which
     /// the span starts or ends (inclusive).
-    column: usize
+    #[unstable(feature = "proc_macro", issue = "38356")]
+    pub column: usize
 }
 
 /// The source file of a given `Span`.

src/librustc/session/mod.rs

@@ -635,9 +635,13 @@ impl Session {
                  self.perf_stats.incr_comp_hashes_count.get());
         println!("Total number of bytes hashed for incr. comp.:  {}",
                  self.perf_stats.incr_comp_bytes_hashed.get());
-        println!("Average bytes hashed per incr. comp. HIR node: {}",
-                 self.perf_stats.incr_comp_bytes_hashed.get() /
-                 self.perf_stats.incr_comp_hashes_count.get());
+        if self.perf_stats.incr_comp_hashes_count.get() != 0 {
+            println!("Average bytes hashed per incr. comp. HIR node: {}",
+                    self.perf_stats.incr_comp_bytes_hashed.get() /
+                    self.perf_stats.incr_comp_hashes_count.get());
+        } else {
+            println!("Average bytes hashed per incr. comp. HIR node: N/A");
+        }
         println!("Total time spent computing symbol hashes:      {}",
                  duration_to_secs_str(self.perf_stats.symbol_hash_time.get()));
         println!("Total time spent decoding DefPath tables:      {}",

src/librustc_driver/lib.rs

@@ -810,9 +810,8 @@ impl RustcDefaultCalls {
                 PrintRequest::TargetCPUs | PrintRequest::TargetFeatures => {
                     rustc_trans::print(*req, sess);
                 }
-                PrintRequest::NativeStaticLibs => {
-                    println!("Native static libs can be printed only during linking");
-                }
+                // Any output here interferes with Cargo's parsing of other printed output
+                PrintRequest::NativeStaticLibs => {}
             }
         }
         return Compilation::Stop;

src/libstd/collections/hash/table.rs

@@ -123,9 +123,6 @@ pub struct RawTable<K, V> {
     marker: marker::PhantomData<(K, V)>,
 }
 
-unsafe impl<K: Send, V: Send> Send for RawTable<K, V> {}
-unsafe impl<K: Sync, V: Sync> Sync for RawTable<K, V> {}
-
 // An unsafe view of a RawTable bucket
 // Valid indexes are within [0..table_capacity)
 pub struct RawBucket<K, V> {

src/rustllvm/PassWrapper.cpp

@@ -969,11 +969,19 @@ LLVMRustCreateThinLTOData(LLVMRustThinLTOModule *modules,
   // linkage will stay as external, and internal will stay as internal.
   std::set<GlobalValue::GUID> ExportedGUIDs;
   for (auto &List : Ret->Index) {
+#if LLVM_VERSION_GE(5, 0)
+    for (auto &GVS: List.second.SummaryList) {
+#else
     for (auto &GVS: List.second) {
+#endif
       if (GlobalValue::isLocalLinkage(GVS->linkage()))
         continue;
       auto GUID = GVS->getOriginalName();
+#if LLVM_VERSION_GE(5, 0)
+      if (GVS->flags().Live)
+#else
       if (!DeadSymbols.count(GUID))
+#endif
         ExportedGUIDs.insert(GUID);
     }
   }