Bug 20871 – std.socket.UnixAddress @trusted functions can corrupt memory if inherited from

``` import std.socket; import std.stdio; class Oops : UnixAddress { override void setNameLen (socklen_t) @safe { this._nameLen = 99999; } } void main() @safe { auto un = new Oops(); un.setNameLen(0); writeln(un.path()); } ``` ``` dmd -preview=dip1000 -run foo.d ????????????????????????????????????????????????????????????????????????????????????????????????????????!�@h����!�@h���"�@h����"�@h���#�@h����#�@h���$�@h����$�@h���%�@h����%�@h���&�@h����&�@h���'�@h����'�@h���(�@h����(�@h���)�@h����)�@h���*�@h����*�@h���+�@h����+�@h���,�@h����,�@h���-�@h����-�@h���.�@h����.�@h���/�@h����/�@h���@h��� ```

THIS ISSUE HAS BEEN MOVED TO GITHUB https://github.com/dlang/phobos/issues/10419 DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB