[Issue 17149] New: to!int("42", 16, LetterCase.lower) does not compile

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17149

          Issue ID: 17149
           Summary: to!int("42", 16, LetterCase.lower) does not compile
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: issues.dlang at jmdavisProg.com

This code does not compile. 

void main()
{
    import std.ascii;
    import std.conv;
    assert(to!int("42", 16) == 0x42);
    assert(to!int("42", 16, LetterCase.lower) == 0x42);
    assert(to!int("42", 16, LetterCase.upper) == 0x42);
}

The first to!int call works, but the other two do not. It is clear from the
documentation for std.conv.to that they should. And std.conv.to has this in its
unit tests:

        assert(to!string(Int(0x1234BCD), 16u, LetterCase.upper) == "1234BCD");
        assert(to!string(Int(0x1234AF), 16u, LetterCase.lower) == "1234af");

So, the problem is likely related to access levels in some way, with required
functions probably being private. Regardless, the results is that you can't
currently give std.conv.to!int a LetterCase argument, forcing all hex literals
to be uppercase. It wouldn't surprise me if this is a regression, but I'm not
in a good position to test that at the moment.

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