auto merge of #14187 : alexcrichton/rust/rollup, r=alexcrichton

Closes #14184 (std: Move the owned module from core to std)
Closes #14183 (Allow blocks in const expressions)
Closes #14176 (Add tests for from_bits.)
Closes #14175 (Replaced ~T by Box<T> in manual)
Closes #14173 (Implements Default trait for BigInt and BigUint)
Closes #14171 (Fix #8391)
Closes #14159 (Clean up unicode code in libstd)
Closes #14126 (docs: Add a not found page)
Closes #14123 (add a line to the example to clarify semantics)
Closes #14106 (Pretty printer improvements)
Closes #14083 (rustllvm: Add LLVMRustArrayType)
Closes #13957 (io: Implement process wait timeouts)

1 files changed, 7 insertions, 0 deletions

diff --git a/src/libstd/bitflags.rs b/src/libstd/bitflags.rs
index 5737bc772df..f834a158588 100644
--- a/src/libstd/bitflags.rs
+++ b/src/libstd/bitflags.rs
@@ -208,6 +208,13 @@ mod tests {
     }
 
     #[test]
+    fn test_from_bits() {
+        assert!(unsafe { Flags::from_bits(0x00000000) } == Flags::empty());
+        assert!(unsafe { Flags::from_bits(0x00000001) } == FlagA);
+        assert!(unsafe { Flags::from_bits(0x00000111) } == FlagABC);
+    }
+
+    #[test]
     fn test_is_empty(){
         assert!(Flags::empty().is_empty());
         assert!(!FlagA.is_empty());