[Issue 995] New: compile-time function return element of Tuple / const array

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=995

           Summary: compile-time function return element of Tuple / const
                    array
           Product: D
           Version: 1.007
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: Daniel919 at web.de


compile-time function return element of Tuple
--------------------------------------------------------------------
import std.stdio;

template Tuple(A...) { alias A Tuple; }
template eval(A...) { alias A eval; }

alias Tuple!("a","b") foo;
char[] retsth(int i) { return foo[i]; }
//Error: Integer constant expression expected instead of cast(uint)i

void main()
{
        writefln(eval!(foo[0]));
        //this is working

        writefln(eval!(retsth(0)));
}
--------------------------------------------------------------------


compile-time function return element of const array
--------------------------------------------------------------------

import std.stdio;

template eval(A...) { alias A eval; }

const char[] foo[2] = ["a","b"];
char[] retsth(int i) { return foo[i]; }

void main()
{
        writefln(eval!(foo[0]));
        //this is working (see #975)

        writefln(eval!(retsth(0)));
        //but this makes dmd crash
}
--------------------------------------------------------------------


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