diff --git a/dom/base/Element.cpp b/dom/base/Element.cpp
index b299d3849e..37878eaa20 100644
--- a/dom/base/Element.cpp
+++ b/dom/base/Element.cpp
@@ -1908,10 +1908,6 @@ Element::UnbindFromTree(bool aDeep, bool aNullParent)
   // recomputed it anyway if we ever insert the nodes back into a document.
   if (IsStyledByServo()) {
     ClearServoData();
-  } else {
-#ifdef MOZ_STYLO
-    MOZ_ASSERT(!HasServoData());
-#endif
   }
 
   // Editable descendant count only counts descendants that
diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index ab9f2419a1..19e23cb6eb 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -12302,21 +12302,6 @@ nsIDocument::UpdateStyleBackendType()
 
   // Assume Gecko by default.
   mStyleBackendType = StyleBackendType::Gecko;
-
-#ifdef MOZ_STYLO
-  // XXX For now we use a Servo-backed style set only for (X)HTML documents
-  // in content docshells.  This should let us avoid implementing XUL-specific
-  // CSS features.  And apart from not supporting SVG properties in Servo
-  // yet, the root SVG element likes to create a style sheet for an SVG
-  // document before we have a pres shell (i.e. before we make the decision
-  // here about whether to use a Gecko- or Servo-backed style system), so
-  // we avoid Servo-backed style sets for SVG documents.
-  if (!mDocumentContainer) {
-    NS_WARNING("stylo: No docshell yet, assuming Gecko style system");
-  } else if (nsLayoutUtils::SupportsServoStyleBackend(this)) {
-    mStyleBackendType = StyleBackendType::Servo;
-  }
-#endif
 }
 
 Selection*
diff --git a/dom/base/nsGenericDOMDataNode.cpp b/dom/base/nsGenericDOMDataNode.cpp
index 6aedebcc18..d045c0424e 100644
--- a/dom/base/nsGenericDOMDataNode.cpp
+++ b/dom/base/nsGenericDOMDataNode.cpp
@@ -602,10 +602,6 @@ nsGenericDOMDataNode::UnbindFromTree(bool aDeep, bool aNullParent)
   // recomputed it anyway if we ever insert the nodes back into a document.
   if (IsStyledByServo()) {
     ClearServoData();
-  } else {
-#ifdef MOZ_STYLO
-    MOZ_ASSERT(!HasServoData());
-#endif
   }
 
   if (aNullParent || !mParent->IsInShadowTree()) {
diff --git a/dom/base/nsINode.cpp b/dom/base/nsINode.cpp
index d4129171cb..03ea679880 100644
--- a/dom/base/nsINode.cpp
+++ b/dom/base/nsINode.cpp
@@ -152,9 +152,6 @@ nsINode::~nsINode()
 {
   MOZ_ASSERT(!HasSlots(), "nsNodeUtils::LastRelease was not called?");
   MOZ_ASSERT(mSubtreeRoot == this, "Didn't restore state properly?");
-#ifdef MOZ_STYLO
-  ClearServoData();
-#endif
 }
 
 void*
@@ -1445,11 +1442,7 @@ nsINode::UnoptimizableCCNode() const
 
 void
 nsINode::ClearServoData() {
-#ifdef MOZ_STYLO
-  Servo_Node_ClearNodeData(this);
-#else
   MOZ_CRASH("Accessing servo node data in non-stylo build");
-#endif
 }
 
 /* static */
@@ -3193,14 +3186,6 @@ nsINode::IsNodeApzAwareInternal() const
   return EventTarget::IsApzAware();
 }
 
-#ifdef MOZ_STYLO
-bool
-nsINode::IsStyledByServo() const
-{
-  return OwnerDoc()->IsStyledByServo();
-}
-#endif
-
 DocGroup*
 nsINode::GetDocGroup() const
 {
diff --git a/dom/base/nsINode.h b/dom/base/nsINode.h
index 5268767a3e..a33c088928 100644
--- a/dom/base/nsINode.h
+++ b/dom/base/nsINode.h
@@ -1022,11 +1022,7 @@ public:
    * Returns true if this is a node belonging to a document that uses the Servo
    * style system.
    */
-#ifdef MOZ_STYLO
-  bool IsStyledByServo() const;
-#else
   bool IsStyledByServo() const { return false; }
-#endif
 
   bool IsDirtyForServo() const
   {
@@ -2139,11 +2135,7 @@ public:
 #undef EVENT
 
   bool HasServoData() {
-#ifdef MOZ_STYLO
-    return !!mServoData.Get();
-#else
     MOZ_CRASH("Accessing servo node data in non-stylo build");
-#endif
   }
 
   void ClearServoData();
@@ -2185,11 +2177,6 @@ protected:
 
   // Storage for more members that are usually not needed; allocated lazily.
   nsSlots* mSlots;
-
-#ifdef MOZ_STYLO
-  // Per-node data managed by Servo.
-  mozilla::ServoCell<ServoNodeData*> mServoData;
-#endif
 };
 
 inline nsIDOMNode* GetAsDOMNode(nsINode* aNode)
diff --git a/layout/base/RestyleManagerBase.h b/layout/base/RestyleManagerBase.h
index 8b8bf4170e..c3fc2f8a5a 100644
--- a/layout/base/RestyleManagerBase.h
+++ b/layout/base/RestyleManagerBase.h
@@ -120,11 +120,7 @@ protected:
   }
 
   inline bool IsServo() const {
-#ifdef MOZ_STYLO
-    return PresContext()->StyleSet()->IsServo();
-#else
     return false;
-#endif
   }
 
 private:
diff --git a/layout/base/RestyleManagerHandle.h b/layout/base/RestyleManagerHandle.h
index 5cc26e41e1..30702c5a5e 100644
--- a/layout/base/RestyleManagerHandle.h
+++ b/layout/base/RestyleManagerHandle.h
@@ -52,11 +52,7 @@ public:
     bool IsServo() const
     {
       MOZ_ASSERT(mValue, "RestyleManagerHandle null pointer dereference");
-#ifdef MOZ_STYLO
-      return mValue & SERVO_BIT;
-#else
       return false;
-#endif
     }
 
     StyleBackendType BackendType() const
@@ -186,16 +182,8 @@ public:
 
   RestyleManagerHandle& operator=(ServoRestyleManager* aManager)
   {
-#ifdef MOZ_STYLO
-    MOZ_ASSERT(!(reinterpret_cast<uintptr_t>(aManager) & SERVO_BIT),
-               "least significant bit shouldn't be set; we use it for state");
-    mPtr.mValue =
-      aManager ? (reinterpret_cast<uintptr_t>(aManager) | SERVO_BIT) : 0;
-    return *this;
-#else
     MOZ_CRASH("should not have a ServoRestyleManager object when MOZ_STYLO is "
               "disabled");
-#endif
   }
 
   // Make RestyleManagerHandle usable in boolean contexts.
diff --git a/layout/base/nsLayoutUtils.cpp b/layout/base/nsLayoutUtils.cpp
index 613dd0b304..79ab52aaa6 100644
--- a/layout/base/nsLayoutUtils.cpp
+++ b/layout/base/nsLayoutUtils.cpp
@@ -181,9 +181,6 @@ typedef nsStyleTransformMatrix::TransformReferenceBox TransformReferenceBox;
 /* static */ bool nsLayoutUtils::sInterruptibleReflowEnabled;
 /* static */ bool nsLayoutUtils::sSVGTransformBoxEnabled;
 /* static */ bool nsLayoutUtils::sTextCombineUprightDigitsEnabled;
-#ifdef MOZ_STYLO
-/* static */ bool nsLayoutUtils::sStyloEnabled;
-#endif
 /* static */ uint32_t nsLayoutUtils::sIdlePeriodDeadlineLimit;
 /* static */ uint32_t nsLayoutUtils::sQuiescentFramesBeforeIdlePeriod;
 
@@ -7632,10 +7629,6 @@ nsLayoutUtils::Initialize()
                                "svg.transform-box.enabled");
   Preferences::AddBoolVarCache(&sTextCombineUprightDigitsEnabled,
                                "layout.css.text-combine-upright-digits.enabled");
-#ifdef MOZ_STYLO
-  Preferences::AddBoolVarCache(&sStyloEnabled,
-                               "layout.css.servo.enabled");
-#endif
   Preferences::AddUintVarCache(&sIdlePeriodDeadlineLimit,
                                "layout.idle_period.time_limit",
                                DEFAULT_IDLE_PERIOD_TIME_LIMIT);
diff --git a/layout/base/nsLayoutUtils.h b/layout/base/nsLayoutUtils.h
index f8724d69d3..29cd655660 100644
--- a/layout/base/nsLayoutUtils.h
+++ b/layout/base/nsLayoutUtils.h
@@ -2383,11 +2383,7 @@ public:
   // or disabled at compile-time. However, we provide the additional capability
   // to disable it dynamically in stylo-enabled builds via a pref.
   static bool StyloEnabled() {
-#ifdef MOZ_STYLO
-    return sStyloEnabled;
-#else
     return false;
-#endif
   }
 
   static uint32_t IdlePeriodDeadlineLimit() {
@@ -2910,9 +2906,6 @@ private:
   static bool sInterruptibleReflowEnabled;
   static bool sSVGTransformBoxEnabled;
   static bool sTextCombineUprightDigitsEnabled;
-#ifdef MOZ_STYLO
-  static bool sStyloEnabled;
-#endif
   static uint32_t sIdlePeriodDeadlineLimit;
   static uint32_t sQuiescentFramesBeforeIdlePeriod;
 
diff --git a/layout/style/ServoBindings.cpp b/layout/style/ServoBindings.cpp
index 0433cab914..ed21093ba3 100644
--- a/layout/style/ServoBindings.cpp
+++ b/layout/style/ServoBindings.cpp
@@ -695,23 +695,9 @@ Gecko_Destroy_nsStyle##name(nsStyle##name* ptr)                               \
 
 #undef STYLE_STRUCT
 
-#ifndef MOZ_STYLO
 #define SERVO_BINDING_FUNC(name_, return_, ...)                               \
   return_ name_(__VA_ARGS__) {                                                \
     MOZ_CRASH("stylo: shouldn't be calling " #name_ "in a non-stylo build");  \
   }
 #include "ServoBindingList.h"
 #undef SERVO_BINDING_FUNC
-#endif
-
-#ifdef MOZ_STYLO
-const nsStyleVariables*
-Servo_GetStyleVariables(ServoComputedValuesBorrowed aComputedValues)
-{
-  // Servo can't provide us with Variables structs yet, so instead of linking
-  // to a Servo_GetStyleVariables defined in Servo we define one here that
-  // always returns the same, empty struct.
-  static nsStyleVariables variables(StyleStructContext::ServoContext());
-  return &variables;
-}
-#endif
diff --git a/layout/style/ServoUtils.h b/layout/style/ServoUtils.h
index 047cbb7a05..8c8dbebcc1 100644
--- a/layout/style/ServoUtils.h
+++ b/layout/style/ServoUtils.h
@@ -10,15 +10,9 @@
 
 #include "mozilla/TypeTraits.h"
 
-#ifdef MOZ_STYLO
-# define MOZ_DECL_STYLO_CHECK_METHODS \
-  bool IsGecko() const { return !IsServo(); } \
-  bool IsServo() const { return mType == StyleBackendType::Servo; }
-#else
 # define MOZ_DECL_STYLO_CHECK_METHODS \
   bool IsGecko() const { return true; } \
   bool IsServo() const { return false; }
-#endif
 
 /**
  * Macro used in a base class of |geckotype_| and |servotype_|.
diff --git a/layout/style/StyleContextSource.h b/layout/style/StyleContextSource.h
index 7c6a007304..9911dd8aa2 100644
--- a/layout/style/StyleContextSource.h
+++ b/layout/style/StyleContextSource.h
@@ -53,11 +53,7 @@ struct NonOwningStyleContextSource
   bool IsNull() const { return !mBits; }
   bool IsGeckoRuleNodeOrNull() const { return !IsServoComputedValues(); }
   bool IsServoComputedValues() const {
-#ifdef MOZ_STYLO
-    return mBits & 1;
-#else
     return false;
-#endif
   }
 
   nsRuleNode* AsGeckoRuleNode() const {
diff --git a/layout/style/StyleSetHandle.h b/layout/style/StyleSetHandle.h
index 6c67a058df..e5e4af800a 100644
--- a/layout/style/StyleSetHandle.h
+++ b/layout/style/StyleSetHandle.h
@@ -54,11 +54,7 @@ public:
     bool IsServo() const
     {
       MOZ_ASSERT(mValue, "StyleSetHandle null pointer dereference");
-#ifdef MOZ_STYLO
-      return mValue & SERVO_BIT;
-#else
       return false;
-#endif
     }
 
     StyleBackendType BackendType() const
@@ -187,16 +183,8 @@ public:
 
   StyleSetHandle& operator=(ServoStyleSet* aStyleSet)
   {
-#ifdef MOZ_STYLO
-    MOZ_ASSERT(!(reinterpret_cast<uintptr_t>(aStyleSet) & SERVO_BIT),
-               "least significant bit shouldn't be set; we use it for state");
-    mPtr.mValue =
-      aStyleSet ? (reinterpret_cast<uintptr_t>(aStyleSet) | SERVO_BIT) : 0;
-    return *this;
-#else
     MOZ_CRASH("should not have a ServoStyleSet object when MOZ_STYLO is "
               "disabled");
-#endif
   }
 
   // Make StyleSetHandle usable in boolean contexts.
diff --git a/layout/style/StyleStructContext.h b/layout/style/StyleStructContext.h
index f4b59972ec..d8273049ab 100644
--- a/layout/style/StyleStructContext.h
+++ b/layout/style/StyleStructContext.h
@@ -35,11 +35,7 @@ class nsDeviceContext;
  * We don't put the type in namespace mozilla, since we expect it to be
  * temporary, and the namespacing would clutter up nsStyleStruct.h.
  */
-#ifdef MOZ_STYLO
-#define SERVO_DEFAULT(default_val) { if (!mPresContext) { return default_val; } }
-#else
 #define SERVO_DEFAULT(default_val) { MOZ_ASSERT(mPresContext); }
-#endif
 class StyleStructContext {
 public:
   MOZ_IMPLICIT StyleStructContext(nsPresContext* aPresContext)
diff --git a/layout/style/nsRuleNode.cpp b/layout/style/nsRuleNode.cpp
index e57b552ebb..1fa6166f27 100644
--- a/layout/style/nsRuleNode.cpp
+++ b/layout/style/nsRuleNode.cpp
@@ -10507,13 +10507,6 @@ nsRuleNode::HasAuthorSpecifiedRules(nsStyleContext* aStyleContext,
                                     uint32_t ruleTypeMask,
                                     bool aAuthorColorsAllowed)
 {
-#ifdef MOZ_STYLO
-  if (aStyleContext->StyleSource().IsServoComputedValues()) {
-    NS_WARNING("stylo: nsRuleNode::HasAuthorSpecifiedRules not implemented");
-    return true;
-  }
-#endif
-
   uint32_t inheritBits = 0;
   if (ruleTypeMask & NS_AUTHOR_SPECIFIED_BACKGROUND) {
     inheritBits |= NS_STYLE_INHERIT_BIT(Background);
diff --git a/layout/style/nsStyleContext.cpp b/layout/style/nsStyleContext.cpp
index 38b422bd73..1c40245425 100644
--- a/layout/style/nsStyleContext.cpp
+++ b/layout/style/nsStyleContext.cpp
@@ -88,18 +88,9 @@ nsStyleContext::nsStyleContext(nsStyleContext* aParent,
   , mEmptyChild(nullptr)
   , mPseudoTag(aPseudoTag)
   , mSource(Move(aSource))
-#ifdef MOZ_STYLO
-  , mPresContext(nullptr)
-#endif
   , mCachedResetData(nullptr)
   , mBits(((uint64_t)aPseudoType) << NS_STYLE_CONTEXT_TYPE_SHIFT)
   , mRefCnt(0)
-#ifdef MOZ_STYLO
-  , mStoredChangeHint(nsChangeHint(0))
-#ifdef DEBUG
-  , mConsumedChangeHint(false)
-#endif
-#endif
 #ifdef DEBUG
   , mFrameRefCnt(0)
   , mComputingStruct(nsStyleStructID_None)
@@ -116,10 +107,6 @@ nsStyleContext::nsStyleContext(nsStyleContext* aParent,
   : nsStyleContext(aParent, OwningStyleContextSource(Move(aRuleNode)),
                    aPseudoTag, aPseudoType)
 {
-#ifdef MOZ_STYLO
-  mPresContext = mSource.AsGeckoRuleNode()->PresContext();
-#endif
-
   if (aParent) {
 #ifdef DEBUG
     nsRuleNode *r1 = mParent->RuleNode(), *r2 = mSource.AsGeckoRuleNode();
@@ -146,10 +133,6 @@ nsStyleContext::nsStyleContext(nsStyleContext* aParent,
   : nsStyleContext(aParent, OwningStyleContextSource(Move(aComputedValues)),
                    aPseudoTag, aPseudoType)
 {
-#ifdef MOZ_STYLO
-  mPresContext = aPresContext;
-#endif
-
   FinishConstruction(aSkipParentDisplayBasedStyleFixup);
 }
 
diff --git a/layout/style/nsStyleContext.h b/layout/style/nsStyleContext.h
index b0b4896a3d..404240b16e 100644
--- a/layout/style/nsStyleContext.h
+++ b/layout/style/nsStyleContext.h
@@ -154,11 +154,7 @@ public:
   }
 
   nsPresContext* PresContext() const {
-#ifdef MOZ_STYLO
-    return mPresContext;
-#else
     return mSource.AsGeckoRuleNode()->PresContext();
-#endif
   }
 
   nsStyleContext* GetParent() const { return mParent; }
@@ -512,45 +508,6 @@ public:
 
   mozilla::NonOwningStyleContextSource StyleSource() const { return mSource.AsRaw(); }
 
-#ifdef MOZ_STYLO
-  // NOTE: It'd be great to assert here that the previous change hint is always
-  // consumed.
-  //
-  // This is not the case right now, since the changes of childs of frames that
-  // go through frame construction are not consumed.
-  void StoreChangeHint(nsChangeHint aHint)
-  {
-    MOZ_ASSERT(!IsShared());
-    mStoredChangeHint = aHint;
-#ifdef DEBUG
-    mConsumedChangeHint = false;
-#endif
-  }
-
-  nsChangeHint ConsumeStoredChangeHint()
-  {
-    MOZ_ASSERT(!mConsumedChangeHint, "Re-consuming the same change hint!");
-    nsChangeHint result = mStoredChangeHint;
-    mStoredChangeHint = nsChangeHint(0);
-#ifdef DEBUG
-    mConsumedChangeHint = true;
-#endif
-    return result;
-  }
-#else
-  void StoreChangeHint(nsChangeHint aHint)
-  {
-    MOZ_CRASH("stylo: Called nsStyleContext::StoreChangeHint in a non MOZ_STYLO "
-              "build.");
-  }
-
-  nsChangeHint ConsumeStoredChangeHint()
-  {
-    MOZ_CRASH("stylo: Called nsStyleContext::ComsumeStoredChangeHint in a non "
-               "MOZ_STYLO build.");
-  }
-#endif
-
 private:
   // Private destructor, to discourage deletion outside of Release():
   ~nsStyleContext();
@@ -781,12 +738,6 @@ private:
   // when it's released and nulled out during teardown.
   const mozilla::OwningStyleContextSource mSource;
 
-#ifdef MOZ_STYLO
-  // In Gecko, we can get this off the rule node. We make this conditional
-  // on stylo builds to avoid the memory bloat on release.
-  nsPresContext* mPresContext;
-#endif
-
   // mCachedInheritedData and mCachedResetData point to both structs that
   // are owned by this style context and structs that are owned by one of
   // this style context's ancestors (which are indirectly owned since this
@@ -809,15 +760,6 @@ private:
 
   uint32_t                mRefCnt;
 
-  // For now we store change hints on the style context during parallel traversal.
-  // We should improve this - see bug 1289861.
-#ifdef MOZ_STYLO
-  nsChangeHint            mStoredChangeHint;
-#ifdef DEBUG
-  bool                    mConsumedChangeHint;
-#endif
-#endif
-
 #ifdef DEBUG
   uint32_t                mFrameRefCnt; // number of frames that use this
                                         // as their style context
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index dfa0fd0caa..17c6021044 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -5258,11 +5258,6 @@ pref("dom.webkitBlink.filesystem.enabled", true);
 
 pref("media.block-autoplay-until-in-foreground", true);
 
-#ifdef MOZ_STYLO
-// Is the Servo-backed style system enabled?
-pref("layout.css.servo.enabled", true);
-#endif
-
 // Block toplevel data: URI navigations
 // If true, all toplevel data: URI navigations will be blocked.
 // Please note that manually entering a data: URI in the
diff --git a/toolkit/library/moz.build b/toolkit/library/moz.build
index 69b207d77a..49ff260b47 100644
--- a/toolkit/library/moz.build
+++ b/toolkit/library/moz.build
@@ -185,12 +185,6 @@ if CONFIG['OS_ARCH'] == 'Linux':
 OS_LIBS += CONFIG['MOZ_CAIRO_OSLIBS']
 OS_LIBS += CONFIG['MOZ_WEBRTC_X11_LIBS']
 
-if CONFIG['SERVO_TARGET_DIR']:
-    if CONFIG['_MSC_VER']:
-        OS_LIBS += ['%s/geckoservo' % CONFIG['SERVO_TARGET_DIR']]
-    else:
-        OS_LIBS += ['-L%s' % CONFIG['SERVO_TARGET_DIR'], '-lgeckoservo']
-
 if CONFIG['MOZ_SYSTEM_JPEG']:
     OS_LIBS += CONFIG['MOZ_JPEG_LIBS']
 
diff --git a/toolkit/moz.configure b/toolkit/moz.configure
index fbd728fdc8..edf2a78fb8 100644
--- a/toolkit/moz.configure
+++ b/toolkit/moz.configure
@@ -387,31 +387,6 @@ id_and_secret_keyfile('Bing API')
 
 simple_keyfile('Adjust SDK')
 
-# Servo integration
-# ==============================================================
-option('--enable-stylo', env='STYLO_ENABLED', nargs=0,
-       help='Enables experimental integration with the servo style system. '
-            'This requires either building servo within Gecko\'s cargo phase '
-            'or passing --with-servo')
-
-@depends('--enable-stylo')
-def stylo(value):
-    if value:
-        return True
-
-set_define('MOZ_STYLO', stylo)
-imply_option('--enable-jemalloc', depends_if('--enable-stylo')(lambda _: 'moz'))
-
-option('--with-servo', env='SERVO_TARGET_DIR', nargs=1,
-       help='Absolute path of the target directory where libgeckoservo can '
-            'be found. This is generally servo_src_dir/target/release.')
-
-@depends_if('--with-servo')
-def servo_target_dir(value):
-    return value[0]
-
-set_config('SERVO_TARGET_DIR', servo_target_dir)
-
 # Gecko integrated IPC fuzzer
 # ==============================================================
 option('--enable-ipc-fuzzer', env='MOZ_FAULTY',
diff --git a/toolkit/xre/nsAppRunner.cpp b/toolkit/xre/nsAppRunner.cpp
index 74850e17e2..54922ae894 100644
--- a/toolkit/xre/nsAppRunner.cpp
+++ b/toolkit/xre/nsAppRunner.cpp
@@ -3767,15 +3767,6 @@ XREMain::XRE_mainRun()
     rv = appStartup->CreateHiddenWindow();
     NS_ENSURE_SUCCESS(rv, NS_ERROR_FAILURE);
 
-#ifdef MOZ_STYLO
-    // We initialize Servo here so that the hidden DOM window is available,
-    // since initializing Servo calls style struct constructors, and the
-    // HackilyFindDeviceContext stuff we have right now depends on the hidden
-    // DOM window. When we fix that, this should move back to
-    // nsLayoutStatics.cpp
-    Servo_Initialize();
-#endif
-
 #if defined(HAVE_DESKTOP_STARTUP_ID) && defined(MOZ_WIDGET_GTK)
     nsGTKToolkit* toolkit = nsGTKToolkit::GetToolkit();
     if (toolkit && !mDesktopStartupID.IsEmpty()) {
@@ -3848,12 +3839,6 @@ XREMain::XRE_mainRun()
     }
   }
 
-#ifdef MOZ_STYLO
-    // This, along with the call to Servo_Initialize, should eventually move back
-    // to nsLayoutStatics.cpp.
-    Servo_Shutdown();
-#endif
-
   return rv;
 }