[Issue 12632] New: Out of range indexing for std.typecons.Tuple emits a bad diagnostic

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12632

          Issue ID: 12632
           Summary: Out of range indexing for std.typecons.Tuple emits a
                    bad diagnostic
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: diagnostic
          Severity: normal
          Priority: P1
         Component: Phobos
          Assignee: nobody at puremagic.com
          Reporter: andrej.mitrovich at gmail.com

-----
import std.typecons;
import std.typetuple;

void main()
{
    {
    auto tup = TypeTuple!(1);
    auto a = tup[0];  // ok
    auto b = tup[1];  // Error: array index [1] is outside array bounds [0 ..
1]
    }

    {
    auto tup = tuple(1);
    auto a = tup[0];  // ok
    auto b = tup[1];  // Error: no [] operator overload for type Tuple!int
    }
}
-----

The second diagnostic is not informative.

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