Replace "fall through" comments with Q_FALLTHROUGH

Noted by GCC 11. Looks like it doesn't see the "fall through" comment
(only "fallthrough").

Change-Id: I7246c3e7bb894e0d9521fffd168af15da21a2c93
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

2 files changed, 3 insertions, 3 deletions

diff --git a/src/qml/compiler/qv4codegen.cpp b/src/qml/compiler/qv4codegen.cpp
index f7c4e2c98f..548b8e7548 100644
--- a/src/qml/compiler/qv4codegen.cpp
+++ b/src/qml/compiler/qv4codegen.cpp
@@ -1533,7 +1533,7 @@ bool Codegen::visit(BinaryExpression *ast)
             setExprResult(binopHelper(static_cast<QSOperator::Op>(ast->op), right, left));
             break;
         }
-        // intentional fall-through!
+        Q_FALLTHROUGH();
     case QSOperator::In:
     case QSOperator::InstanceOf:
     case QSOperator::As:
@@ -2260,7 +2260,7 @@ bool Codegen::visit(DeleteExpression *ast)
     case Reference::StackSlot:
         if (!expr.stackSlotIsLocalOrArgument)
             break;
-        // fall through
+        Q_FALLTHROUGH();
     case Reference::ScopedLocal:
         // Trying to delete a function argument might throw.
         if (_context->isStrict) {
diff --git a/src/qml/jsruntime/qv4runtime.cpp b/src/qml/jsruntime/qv4runtime.cpp
index a168b0e580..0ae7fbb180 100644
--- a/src/qml/jsruntime/qv4runtime.cpp
+++ b/src/qml/jsruntime/qv4runtime.cpp
@@ -2327,7 +2327,7 @@ Bool Runtime::CompareEqual::call(const Value &left, const Value &right)
         case QV4::Value::QT_Bool:
         case QV4::Value::QT_Int:
             rhs = Value::fromDouble(rhs.int_32());
-            // fall through
+            Q_FALLTHROUGH();
         default: // double
             if (lhs.m()->internalClass->vtable->isStringOrSymbol) {
                 return lhs.m()->internalClass->vtable->isString ? (RuntimeHelpers::toNumber(lhs) == rhs.doubleValue()) : false;