[Issue 1456] New: Cannot use a constant with alias template parameters

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1456

           Summary: Cannot use a constant with alias template parameters
           Product: D
           Version: 1.020
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: blocker
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: samukha at voliacable.com


<code>
const int i = 20;

template Foo(alias bar)
{
}

alias Foo!(i) foo;
</code>
Error: template instance Foo!(20) does not match any template declaration

Please note that the compiler handles the situation correctly
if the initializer for i is left out:

<code>
const int i;

template Foo(alias bar)
{
  alias bar Foo;
}

alias Foo!(i) foo;
pragma(msg, foo.stringof); // now foo is aliased to i as expected
</code>

D 2.0 has the same problem.


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