http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55117
--- Comment #19 from Tobias Burnus <burnus at gcc dot gnu.org> 2013-03-22 10:09:34 UTC --- The issue of the original bug report in comment 0 - and the test cases comment 3 and comment 13 seem to be fixed by the patch for PR 51825 (see PR 51825 comment 5). Remaining seems to be the separate issue of type extension, where the parent's component is directly accessed without using the parent's name as in-between component name. See comment 6.
