Re: Explicitly specializing std::min() on VC++ 2005 Express Edition

"Matthias Hofmann" <>
Wed, 30 May 2007 12:02:22 +0200
"Ben Voigt" <rbv@nospam.nospam> schrieb im Newsbeitrag

You need an account with Microsoft in order to report a problem to them,
which in turn requires you to agree to about a dozen pages of legal
English basically saying that they may do whatever they want while they
may sue you to the max if anything goes wrong. I do not have the time to
read all this stuff their lawyers came up with, and I'm not going to sign
anything I haven't read, especially when it comes from Microsoft. Other
companies are happy to receive feedback, Microsoft isn't. If they don't
want my report, then they won't get it.

There's less legalese associated with the bug report than there is with
using the compiler, any version, even express edition or the sdk bundle.
There's also at least 3 VC++ MVPs involved with this thread. I think you
have an excellent chance of getting feedback into the system.

Here are the things requested by the feedback form. If you will complete
the form, I will submit the bug report.

Thank you very much for your help, I appreciate it. See below for my
completion of the form and let me know if you need to know more.

Visual Studio and .NET Framework
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Arrays decay into pointers in conditional operator

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( ) Private - access to this feedback is restricted to me, Microsoft, and
others to whom Microsoft delegates


( ) Blocking Issue

Description (5000 characters max)
You must enter a description.

If T is a template parameter which is a reference to an array, T decays
unnecessarily into a pointer in the conditional operator.

Product Language * (pick one)
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Version * (pick one)
 Visual Studio 2005 (All Products and Editions) Service Pack 1 w/ Windows
Vista Update Visual Studio 2005 (All Products and Editions) Service Pack 1
Visual Studio 2005 (All Products and Editions) Visual C#, C++, J#, or
Visual Basic Express Service Pack 1 w/ Windows Vista Update Visual C#,
C++, J#, or Visual Basic Express Service Pack 1 Visual C#, C++, J#, or
Visual Basic Express .NET Framework 2.0 Service Pack 1 .NET Framework 2.0
.NET Framework 3.0 (includes Windows Presentation, Communication and
Workflow Foundation) SQL Express 2005 Service Pack 1 SQL Express 2005
Visual Studio 2005 Team Edition for Database Professionals CTP Visual
Studio Code Name "Orcas" (Beta 1) Visual Studio Code Name "Orcas" (March
2007 CTP) Visual FoxPro 9.0 Visual FoxPro 9.0 SP1 Visual FoxPro 9.0 SP2
and Sedna CTP Visual J# 2.0-SE Redistributable Package Second Edition

Visual C++ 2005 Express Edition with Service Pack 1

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Edition Windows XP Media Center Edition Windows XP Tablet PC Edition
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Server 2003

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Steps to Reproduce *
(multi-line feedback here)

Compile the following code:

#include <cstring>
#include <iostream>

template <class T> struct minimum_impl
    static const T& minimum(
        const T& a, const T& b )
        return a < b ? a : b;

template <std::size_t N> struct minimum_impl<char[N]>
    static const char (& minimum( const char (&a)[N],
        const char (&b)[N] ) )[N]
        // Error C2440 here.
        return std::strcmp( a, b ) < 0 ? a : b;

template <class T> inline
const T& minimum( const T& a, const T& b )
    return minimum_impl<T>::minimum( a, b );

int main()
    char a[] = "a";
    char b[] = "b";

    std::cout << minimum( a, b ) << std::endl;

    return 0;

Actual Results *
(multi-line feedback here)

Gives a C2440 error.

Expected Results *
(multi-line feedback here)

Should compile without an error.

Please post a link to the bug report when you have submitted it, thank you!

Best regards,

Matthias Hofmann

Anvil-Soft, CEO


Wiesentalstr. 5
90419 Nuernberg

+49 (0)911-93 89 29 2

+49 (0)911-93 89 29 3

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