[Issue 5659] New: Conditional operator, array literal, and std.traits.CommonType return a wrong common type

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5659

           Summary: Conditional operator, array literal, and
                    std.traits.CommonType return a wrong common type
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: rayerd.wiz at gmail.com
        Depends on: 3067


--- Comment #0 from Haruki Shigemori <rayerd.wiz at gmail.com> 2011-02-27 07:44:10 PST ---
Because summary of issue 3067 was wrong, I report on this problem again.

import std.stdio : writeln;
import std.traits : CommonType;
void main()
{
    auto a = ("a".dup)[0];
    auto b = "b"[0];
    auto c = true ? a : b;
    auto d = [a, b][0];

    writeln(typeof(a).stringof);//char
    writeln(typeof(b).stringof);//immutable(char)
    writeln(typeof(c).stringof);//int, but it should be char.
    writeln(CommonType!(typeof(a), typeof(b)).stringof);//ditto
    writeln(typeof(d).stringof);//ditto
}

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