[Issue 8338] New: Unqual doesn't work properly on arrays

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=8338

           Summary: Unqual doesn't work properly on arrays
           Product: D
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: jmdavisProg at gmx.com


--- Comment #0 from Jonathan M Davis <jmdavisProg at gmx.com> 2012-07-02 19:12:33 PDT ---
Take this bit of code

import std.stdio;
import std.traits;

void main()
{
    writeln(Unqual!(char[]).stringof);
    writeln(Unqual!(wchar[]).stringof);
    writeln(Unqual!(dchar[]).stringof);
    writeln(Unqual!(const char[]).stringof);
    writeln(Unqual!(const wchar[]).stringof);
    writeln(Unqual!(const dchar[]).stringof);
    writeln(Unqual!string.stringof);
    writeln(Unqual!wstring.stringof);
    writeln(Unqual!dstring.stringof);
    writeln();
    writeln(Unqual!(ubyte[]).stringof);
    writeln(Unqual!(short[]).stringof);
    writeln(Unqual!(uint[]).stringof);
    writeln(Unqual!(const ubyte[]).stringof);
    writeln(Unqual!(const short[]).stringof);
    writeln(Unqual!(const uint[]).stringof);
    writeln(Unqual!(immutable ubyte[]).stringof);
    writeln(Unqual!(immutable short[]).stringof);
    writeln(Unqual!(immutable uint[]).stringof);
}

It prints out

char[]
wchar[]
dchar[]
const(char)[]
const(wchar)[]
const(dchar)[]
string
immutable(wchar)[]
immutable(dchar)[]

ubyte[]
short[]
uint[]
const(ubyte)[]
const(short)[]
const(uint)[]
immutable(ubyte)[]
immutable(short)[]
immutable(uint)[]

None of those const or immutables should be there. The only changes between
this and not using Unqual at all is the const T[] are now const(T)[] and the
immutable T[] are now immutable(T)[]. And the immutable(T)[], are still
immutable(T)[]. The immutable on their elements aren't stripped.

Unqual specifically states that it removes _all_ qualifiers. It's clearly only
removing them from the array itself and not the elements, so it's not removing
all of the qualifiers.

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