3 files changed, 6 insertions, 6 deletions
diff --git a/dom/base/Element.cpp b/dom/base/Element.cpp
index c67e42bd70..89d37b5787 100644
--- a/dom/base/Element.cpp
+++ b/dom/base/Element.cpp
@@ -3199,7 +3199,7 @@ Element::GetEventTargetParentForLinks(EventChainPreVisitor& aVisitor)
   // Set the status bar similarly for mouseover and focus
   case eMouseOver:
     aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
-    MOZ_FALLTHROUGH;
+    [[fallthrough]];
   case eFocus: {
     InternalFocusEvent* focusEvent = aVisitor.mEvent->AsFocusEvent();
     if (!focusEvent || !focusEvent->mIsRefocus) {
@@ -3214,7 +3214,7 @@ Element::GetEventTargetParentForLinks(EventChainPreVisitor& aVisitor)
   }
   case eMouseOut:
     aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
-    MOZ_FALLTHROUGH;
+    [[fallthrough]];
   case eBlur:
     rv = LeaveLink(aVisitor.mPresContext);
     if (NS_SUCCEEDED(rv)) {
diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index 9b7a8c2721..4d34303028 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -5787,7 +5787,7 @@ nsIDocument::ImportNode(nsINode& aNode, bool aDeep, ErrorResult& rv) const
       if (ShadowRoot::FromNode(imported)) {
         break;
       }
-      MOZ_FALLTHROUGH;
+      [[fallthrough]];
     }
     case nsIDOMNode::ATTRIBUTE_NODE:
     case nsIDOMNode::ELEMENT_NODE:
@@ -6893,7 +6893,7 @@ nsIDocument::AdoptNode(nsINode& aAdoptedNode, ErrorResult& rv)
         rv.Throw(NS_ERROR_DOM_HIERARCHY_REQUEST_ERR);
         return nullptr;
       }
-      MOZ_FALLTHROUGH;
+      [[fallthrough]];
     }
     case nsIDOMNode::ELEMENT_NODE:
     case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
@@ -7184,7 +7184,7 @@ nsDocument::GetViewportInfo(const ScreenIntSize& aDisplaySize)
     mValidMaxScale = !maxScaleStr.IsEmpty() && NS_SUCCEEDED(scaleMaxErrorCode);
 
     mViewportType = Specified;
-    MOZ_FALLTHROUGH;
+    [[fallthrough]];
   }
   case Specified:
   default:
diff --git a/dom/base/nsXMLContentSerializer.cpp b/dom/base/nsXMLContentSerializer.cpp
index 1bf075875f..e5cf12f638 100644
--- a/dom/base/nsXMLContentSerializer.cpp
+++ b/dom/base/nsXMLContentSerializer.cpp
@@ -1442,7 +1442,7 @@ nsXMLContentSerializer::AppendFormatedWrapped_WhitespaceSequence(
       case ' ':
       case '\t':
         sawBlankOrTab = true;
-        MOZ_FALLTHROUGH;
+        [[fallthrough]];
       case '\n':
         ++aPos;
         // do not increase mColPos,