3 files changed, 15 insertions, 1 deletions
diff --git a/src/sql/kernel/qsqlcachedresult.cpp b/src/sql/kernel/qsqlcachedresult.cpp
index 3cace06..ca51dc0 100644
--- a/src/sql/kernel/qsqlcachedresult.cpp
+++ b/src/sql/kernel/qsqlcachedresult.cpp
@@ -294,4 +294,17 @@ QSqlCachedResult::ValueCache &QSqlCachedResult::cache()
     return d->cache;
 }
 
+void QSqlCachedResult::virtual_hook(int id, void *data)
+{
+    switch (id) {
+    case QSqlResult::DetachFromResultSet:
+    case QSqlResult::SetNumericalPrecision:
+        cleanup();
+        break;
+    default:
+        QSqlResult::virtual_hook(id, data);
+    }
+}
+
+
 QT_END_NAMESPACE
diff --git a/src/sql/kernel/qsqlcachedresult_p.h b/src/sql/kernel/qsqlcachedresult_p.h
index d19435c..a384b2e 100644
--- a/src/sql/kernel/qsqlcachedresult_p.h
+++ b/src/sql/kernel/qsqlcachedresult_p.h
@@ -89,6 +89,7 @@ protected:
     int colCount() const;
     ValueCache &cache();
 
+    void virtual_hook(int id, void *data);
 private:
     bool cacheNext();
     QSqlCachedResultPrivate *d;
diff --git a/src/sql/kernel/qsqlresult.cpp b/src/sql/kernel/qsqlresult.cpp
index 1c1595d..93c9d9f 100644
--- a/src/sql/kernel/qsqlresult.cpp
+++ b/src/sql/kernel/qsqlresult.cpp
@@ -905,7 +905,6 @@ QVariant QSqlResult::lastInsertId() const
 */
 void QSqlResult::virtual_hook(int, void *)
 {
-    Q_ASSERT(false);
 }
 
 /*! \internal
@@ -971,6 +970,7 @@ void QSqlResult::detachFromResultSet()
 void QSqlResult::setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy policy)
 {
     d->precisionPolicy = policy;
+    virtual_hook(SetNumericalPrecision, &policy);
 }
 
 /*! \internal