compiler-warning-level-1-c4544.md

title	Compiler Warning (level 1) C4544
description	Learn more about: Compiler Warning (level 1) C4544
ms.date	11/04/2016
f1_keywords	C4544
helpviewer_keywords	C4544

Compiler Warning (level 1) C4544

'declaration': Default template argument ignored on this template declaration

Remarks

A default template argument was specified in an incorrect location and was ignored. A default template argument for a class template can only be specified in the declaration or definition of the class template and not on a member of the class template.

Example

This example generates C4545, and the next example shows how to fix it:

// C4544.cpp
// compile with: /W1 /LD
template <class T>
struct S
{
   template <class T1>
      struct S1;
   void f();
};

template <class T=int>
template <class T1>
struct S<T>::S1 {};   // C4544

In this example, the default parameter applies to class template S:

// C4544b.cpp
// compile with: /LD
template <class T = int>
struct S
{
   template <class T1>
      struct S1;
   void f();
};

template <class T>
template <class T1>
struct S<T>::S1 {};