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Date: Mon, 19 May 2003 16:36:00 -0000
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Subject: c++/10867: Internal compiler error with constant enum
X-SW-Source: 2003-05/txt/msg02099.txt.bz2
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>Number:         10867
>Category:       c++
>Synopsis:       Internal compiler error with constant enum
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon May 19 16:36:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     Lloyd Lewins
>Release:        gcc version 3.2
>Organization:
>Environment:
Cygwin
>Description:
The attached file generates the following error:

conversion.cc:8: warning: all member functions in class `Conversion<T, U>' are
   private
conversion.cc: In instantiation of `const unsigned int Conversion<double, int>::
t':
conversion.cc:23:   instantiated from `Conversion<double, int>'
conversion.cc:23:   instantiated from here
conversion.cc:15: Internal compiler error in instantiate_decl, at cp/pt.c:10052
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: text/plain; name="conversion.cc"
Content-Disposition: inline; filename="conversion.cc"

#include <vector>
#include <iostream>

using namespace std;

template<class T, class U>
class Conversion
{
    typedef char Small;
    class Big { char dummy[2]; };
    static Small Test(U);
    static Big Test(...);
    static T MakeT();
public:
    static const unsigned t = sizeof(MakeT());
    enum {
        exists = t
    };
};

int main(void)
{
    Conversion<double, int> d;
}