Microsoft KB Archive/168028

= FIX: C2955 Caused by the "using" Declaration =

Article ID: 168028

Article Last Modified on 11/18/2003

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APPLIES TO

 The C Run-Time (CRT), when used with:  Microsoft Visual C++ 5.0 Enterprise Edition

 Microsoft Visual C++ 5.0 Professional Edition 

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This article was previously published under Q168028



SYMPTOMS
If you try to use the "using" declaration on a template class defined in a namespace, the following error message appears:

error C2955: 'identifier' : use of class template requires template argument list



RESOLUTION
Use the using directive instead of the using declaration.



STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been corrected in Visual Studio 97 Service Pack 1.

For additional information about the Visual Studio 97 Service Pack 1, please see the following article in the Microsoft Knowledge Base:

170365 INFO: Visual Studio 97 Service Packs - What, Where, and Why

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MORE INFORMATION
The using declaration introduces a name into the declarative region in which the using declaration appears. It allows an individual name from a specific namespace to be used without explicit qualification. The using directive allows all the names in a namespace to be used without qualification.

The following sample demonstrates the problem and the workaround.

Sample Code
/* Compiler Options: /GX */

#include

//#define WORKAROUND //Uncomment this line to workaround

#ifndef WORKAROUND using std::list ; //C2955 here #else using namespace std ; #endif

int main {  list li ; return 0 ; }

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