Edevil C ++-template typename VC and GNU Compiler

When using 'typedef 'to re-define types in template scopes, VC compiler have no restriction in the use of key work 'typename', but GNU did, Let's see following examples:

 

Template <typename classt> <br/> class testtemplate <br/> {<br/> typedef typename classt mytype; // OK on VC compiler <br/> typedef typename classt mytype2; // error on GNU Compiler, because the type classt is not pending </P> <p> typedef typename STD: vector <classt >:: iterator itertype; // both go well on VC and GNU <br/> typedef STD: vector <classt >:: iterator itertype; // both error on VC and GNU, because the type vector <> is pending (because classt is unknown on First compilation </P> <p> };