2 files changed, 10 insertions, 5 deletions
diff --git a/src/corelib/mimetypes/qmimeprovider.cpp b/src/corelib/mimetypes/qmimeprovider.cpp
index 4aee772366..9dba72923a 100644
--- a/src/corelib/mimetypes/qmimeprovider.cpp
+++ b/src/corelib/mimetypes/qmimeprovider.cpp
@@ -664,7 +664,15 @@ QMimeXMLProvider::QMimeXMLProvider(QMimeDatabasePrivate *db, InternalDatabaseEnu
 
     load(data, size);
 }
-#endif
+#else // !QT_CONFIG(mimetype_database)
+// never called in release mode, but some debug builds may need
+// this to be defined.
+QMimeXMLProvider::QMimeXMLProvider(QMimeDatabasePrivate *db, InternalDatabaseEnum)
+    : QMimeProviderBase(db, QString())
+{
+    Q_UNREACHABLE();
+}
+#endif // QT_CONFIG(mimetype_database)
 
 QMimeXMLProvider::QMimeXMLProvider(QMimeDatabasePrivate *db, const QString &directory)
     : QMimeProviderBase(db, directory)
diff --git a/src/corelib/mimetypes/qmimeprovider_p.h b/src/corelib/mimetypes/qmimeprovider_p.h
index c4e712b318..9c91903684 100644
--- a/src/corelib/mimetypes/qmimeprovider_p.h
+++ b/src/corelib/mimetypes/qmimeprovider_p.h
@@ -135,13 +135,10 @@ public:
     enum InternalDatabaseEnum { InternalDatabase };
 #if QT_CONFIG(mimetype_database)
     enum : bool { InternalDatabaseAvailable = true };
-    QMimeXMLProvider(QMimeDatabasePrivate *db, InternalDatabaseEnum);
 #else
     enum : bool { InternalDatabaseAvailable = false };
-    QMimeXMLProvider(QMimeDatabasePrivate *db, InternalDatabaseEnum)
-        : QMimeProviderBase(db, QString())
-    { Q_UNREACHABLE(); };
 #endif
+    QMimeXMLProvider(QMimeDatabasePrivate *db, InternalDatabaseEnum);
     QMimeXMLProvider(QMimeDatabasePrivate *db, const QString &directory);
     ~QMimeXMLProvider();