3 files changed, 17 insertions, 3 deletions
diff --git a/src/corelib/kernel/qmetacontainer.h b/src/corelib/kernel/qmetacontainer.h
index c9d3a6bf9c6..bff5af11914 100644
--- a/src/corelib/kernel/qmetacontainer.h
+++ b/src/corelib/kernel/qmetacontainer.h
@@ -972,6 +972,7 @@ public:
 
         QVariant at(qsizetype idx) const;
         void set(qsizetype idx, const QVariant &value);
+        void setAt(qsizetype idx, const QVariant &value);
         void append(const QVariant &value);
         void prepend(const QVariant &value);
         void removeLast();
diff --git a/src/corelib/kernel/qmetasequence.cpp b/src/corelib/kernel/qmetasequence.cpp
index 2a3a923d5ca..91ac59d6177 100644
--- a/src/corelib/kernel/qmetasequence.cpp
+++ b/src/corelib/kernel/qmetasequence.cpp
@@ -584,6 +584,11 @@ void QMetaSequence::valueAtConstIterator(const void *iterator, void *result) con
 */
 
 /*!
+    \fn void QMetaSequence::Iterable::setAt(qsizetype idx, const QVariant &value)
+    Sets the element at position \a idx in the container to \a value.
+*/
+
+/*!
     \class QMetaSequence::Iterable::ConstIterator
     \inmodule QtCore
     \inherits QConstIterator
diff --git a/src/corelib/kernel/qmetasequence.h b/src/corelib/kernel/qmetasequence.h
index 26156e7924f..784a8960868 100644
--- a/src/corelib/kernel/qmetasequence.h
+++ b/src/corelib/kernel/qmetasequence.h
@@ -199,10 +199,8 @@ public:
     void set(qsizetype idx, const QVariant &value)
     {
         const QMetaSequence meta = metaContainer();
-        QtPrivate::QVariantTypeCoercer coercer;
-        const void *dataPtr = coercer.coerce(value, meta.valueMetaType());
         if (meta.canSetValueAtIndex()) {
-            meta.setValueAtIndex(mutableIterable(), idx, dataPtr);
+            setAt(idx, value);
             return;
         }
 
@@ -210,6 +208,9 @@ public:
         // We shouldn't second-guess the underlying container
         QtPrivate::warnSynthesizedAccess(
                 "set() called on an iterable without native indexed accessors. This is slow");
+
+        QtPrivate::QVariantTypeCoercer coercer;
+        const void *dataPtr = coercer.coerce(value, meta.valueMetaType());
         void *it = meta.begin(m_iterable.mutablePointer());
         meta.advanceIterator(it, idx);
         meta.setValueAtIterator(it, dataPtr);
@@ -217,6 +218,13 @@ public:
 #endif
     }
 
+    void setAt(qsizetype idx, const QVariant &value)
+    {
+        const QMetaSequence meta = metaContainer();
+        QtPrivate::QVariantTypeCoercer coercer;
+        meta.setValueAtIndex(mutableIterable(), idx, coercer.coerce(value, meta.valueMetaType()));
+    }
+
     void append(const QVariant &value)
     {
         const QMetaSequence meta = metaContainer();