clang: error: default initialization of an object of const type 'const BlackMisc::Aviation::CAirlineIcaoCodeList' without a user-provided default constructor

src/blackmisc/db/dbinfolist.cpp

@@ -15,6 +15,8 @@ namespace BlackMisc
 {
     namespace Db
     {
+        CDbInfoList::CDbInfoList() { }
+
         CDbInfoList::CDbInfoList(const CSequence<CDbInfo> &other) :
             CSequence<CDbInfo>(other)
         { }

src/blackmisc/db/dbinfolist.h

@@ -35,7 +35,7 @@ namespace BlackMisc
             BLACKMISC_DECLARE_USING_MIXIN_METATYPE(CDbInfoList)
 
             //! Default constructor.
-            CDbInfoList() = default;
+            CDbInfoList();
 
             //! Construct from a base class object.
             CDbInfoList(const CSequence<CDbInfo> &other);