Merge pull request #33407 from alexcrichton/beta-next

Merge beta-accepted into beta

mk/main.mk

@@ -18,7 +18,7 @@ CFG_RELEASE_NUM=1.9.0
 # An optional number to put after the label, e.g. '.2' -> '-beta.2'
 # NB Make sure it starts with a dot to conform to semver pre-release
 # versions (section 9)
-CFG_PRERELEASE_VERSION=.1
+CFG_PRERELEASE_VERSION=.2
 
 # Append a version-dependent hash to each library, so we can install different
 # versions in the same place

src/librustc/dep_graph/dep_node.rs

@@ -71,7 +71,6 @@ pub enum DepNode<D: Clone + Debug> {
     DeadCheck,
     StabilityCheck,
     LateLintCheck,
-    IntrinsicUseCheck,
     TransCrate,
     TransCrateItem(D),
     TransInlinedItem(D),
@@ -169,7 +168,6 @@ impl<D: Clone + Debug> DepNode<D> {
             DeadCheck => Some(DeadCheck),
             StabilityCheck => Some(StabilityCheck),
             LateLintCheck => Some(LateLintCheck),
-            IntrinsicUseCheck => Some(IntrinsicUseCheck),
             TransCrate => Some(TransCrate),
             TransWriteMetadata => Some(TransWriteMetadata),
             Hir(ref d) => op(d).map(Hir),

src/librustc/diagnostics.rs

@@ -1410,6 +1410,32 @@ It is not possible to use stability attributes outside of the standard library.
 Also, for now, it is not possible to write deprecation messages either.
 "##,
 
+E0512: r##"
+Transmute with two differently sized types was attempted. Erroneous code
+example:
+
+```compile_fail
+fn takes_u8(_: u8) {}
+
+fn main() {
+    unsafe { takes_u8(::std::mem::transmute(0u16)); }
+    // error: transmute called with differently sized types
+}
+```
+
+Please use types with same size or use the expected type directly. Example:
+
+```
+fn takes_u8(_: u8) {}
+
+fn main() {
+    unsafe { takes_u8(::std::mem::transmute(0i8)); } // ok!
+    // or:
+    unsafe { takes_u8(0u8); } // ok!
+}
+```
+"##,
+
 E0517: r##"
 This error indicates that a `#[repr(..)]` attribute was placed on an
 unsupported item.