writeflnとinterface - dmd2.026

auto interfaceについて調べようと思ったら下のコードでdmdが死んだ．

import std.stdio;

interface A {}
void main()
{
	A x;
	writefln(x);
}

C:\D\dmd\windows\bin\..\..\src\phobos\std\format.d(2050): Error: no property 'toString' for type 'a.A'
C:\D\dmd\windows\bin\..\..\src\phobos\std\format.d(2051): template std.stdio.PrivateFileWriter!(char).PrivateFileWriter.write(C) does not match any function template declaration
C:\D\dmd\windows\bin\..\..\src\phobos\std\format.d(2051): template std.stdio.PrivateFileWriter!(char).PrivateFileWriter.write(C) cannot deduce template function from argument types !()(int)
ここでdmdがアクセス違反であぼーん．

さて，報告するか．