Fix a number of build warnings that could lead to unstable operation

This breaks the ABI

2 files changed, 9 insertions, 0 deletions

diff --git a/src/sql/qsqldatabase.cpp b/src/sql/qsqldatabase.cpp
index eaa7a70..af069a4 100644
--- a/src/sql/qsqldatabase.cpp
+++ b/src/sql/qsqldatabase.cpp
@@ -144,6 +144,12 @@ public:
     QSqlQuery createQuery() const { return QSqlQuery( new QNullResult(this) ); }
 };
 
+QSqlDriverCreatorBase::QSqlDriverCreatorBase() {
+}
+
+QSqlDriverCreatorBase::~QSqlDriverCreatorBase() {
+}
+
 typedef QDict<QSqlDriverCreatorBase> QDriverDict;
 
 class QSqlDatabaseManager : public QObject
diff --git a/src/sql/qsqldatabase.h b/src/sql/qsqldatabase.h
index 3186956..fb07513 100644
--- a/src/sql/qsqldatabase.h
+++ b/src/sql/qsqldatabase.h
@@ -66,6 +66,9 @@ class QSqlDatabasePrivate;
 class QM_EXPORT_SQL QSqlDriverCreatorBase
 {
 public:
+    QSqlDriverCreatorBase();
+    virtual ~QSqlDriverCreatorBase();
+public:
     virtual QSqlDriver* createObject() = 0;
 };