make it compile in stage2

Author: arielb1

src/librustc_typeck/check/cast.rs

@@ -56,14 +56,14 @@ pub struct CastCheck<'tcx> {
     span: Span,
 }
 
-#[derive(Copy, PartialEq, Eq)]
+#[derive(Copy, Clone, PartialEq, Eq)]
 enum IntTy {
     U(ast::UintTy),
     I
 }
 
 // Valid types for the result of a non-coercion cast
-#[derive(Copy, PartialEq, Eq)]
+#[derive(Copy, Clone, PartialEq, Eq)]
 enum ETy<'tcx> {
     CEnum,
     Int(IntTy),
@@ -94,7 +94,7 @@ impl<'tcx> ETy<'tcx> {
     }
 }
 
-#[derive(Copy, PartialEq, Eq)]
+#[derive(Copy, Clone, PartialEq, Eq)]
 enum UnsizeKind {
     Vtable,
     Length
@@ -118,7 +118,7 @@ fn unsize_kind<'a,'tcx>(fcx: &FnCtxt<'a, 'tcx>,
     }
 }
 
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 enum CastError {
     CastToBool,
     CastToChar,

src/test/run-pass/cast-rfc0401.rs

@@ -60,8 +60,10 @@ fn main()
     assert_eq!(1 as f64, 1f64);
 
     assert_eq!(l as f64, 9264081114510712022f64);
-//    assert_eq!(l as f32 as i64 as u64, 9264082620822882088u64);
+
     assert_eq!(l as i64 as f64, -9182662959198838444f64);
+//  float overflow : needs fixing
+//  assert_eq!(l as f32 as i64 as u64, 9264082620822882088u64);
 //  assert_eq!(l as i64 as f32 as i64, 9182664080220408446i64);
 
     assert_eq!(4294967040f32 as u32, 0xffffff00u32);
@@ -72,9 +74,9 @@ fn main()
 
     // enum-cast
     assert_eq!(Simple::A as u8, 0);
-//    assert_eq!(Simple::A as bool, false);
+    assert_eq!(Simple::A as bool, false);
     assert_eq!(Simple::B as u8, 1);
-//    assert_eq!(Simple::B as bool, true);
+    assert_eq!(Simple::B as bool, true);
 
     assert_eq!(Valued::H8 as i8, -93);
     assert_eq!(Valued::H7 as i8, 67);