Description: Conforms with the exception specification of `std::atomic`
 All constructors of `std::atomic` require `noexcept`. As a result, its members
 must also be able to instantiate without any exception throwing.
Forwarded: not-needed
--- a/runtime/mirror/dex_cache.h
+++ b/runtime/mirror/dex_cache.h
@@ -70,7 +70,7 @@
   // Set the initial state for the 0th entry to be {0,1} which is guaranteed to fail
   // the lookup id == stored id branch.
   DexCachePair(ObjPtr<T> object, uint32_t index);
-  DexCachePair() : index(0) {}
+  DexCachePair() noexcept : index(0) {}
   DexCachePair(const DexCachePair<T>&) = default;
   DexCachePair& operator=(const DexCachePair<T>&) = default;
 
@@ -93,7 +93,7 @@
   NativeDexCachePair(T* object, uint32_t index)
       : object(object),
         index(index) {}
-  NativeDexCachePair() : object(nullptr), index(0u) { }
+  NativeDexCachePair() noexcept : object(nullptr), index(0u) { }
   NativeDexCachePair(const NativeDexCachePair<T>&) = default;
   NativeDexCachePair& operator=(const NativeDexCachePair<T>&) = default;
 
--- a/runtime/mirror/object_reference.h
+++ b/runtime/mirror/object_reference.h
@@ -164,7 +164,7 @@
 template<class MirrorType>
 class MANAGED CompressedReference : public mirror::ObjectReference<false, MirrorType> {
  public:
-  CompressedReference<MirrorType>() REQUIRES_SHARED(Locks::mutator_lock_)
+  CompressedReference<MirrorType>() noexcept REQUIRES_SHARED(Locks::mutator_lock_)
       : mirror::ObjectReference<false, MirrorType>(nullptr) {}
 
   static CompressedReference<MirrorType> FromMirrorPtr(MirrorType* p)
--- a/runtime/gc_root.h
+++ b/runtime/gc_root.h
@@ -213,7 +213,7 @@
     return root_.IsNull();
   }
 
-  ALWAYS_INLINE GcRoot() {}
+  ALWAYS_INLINE GcRoot() noexcept {}
   explicit ALWAYS_INLINE GcRoot(MirrorType* ref)
       REQUIRES_SHARED(Locks::mutator_lock_);
   explicit ALWAYS_INLINE GcRoot(ObjPtr<MirrorType> ref)