------- Additional Comments From mark at codesourcery dot com 2005-09-28 20:40 ------- Subject: Re: [4.1 Regression] push_fields_onto_fieldstack calculates offset incorrectly
dberlin at dberlin dot org wrote: >>>And besides, my approach isn't lying at all about this testcase; since >>>there's only one appearance of the virtual base, it appears exactly >>>where the field lists say it will. Daniel agreed that the problem is in >>>his code. >> >>What I meant by "lying" (an admittedly overly contentious choice of >>word) was that the field for B-in-C is marked as having the complete B >>type due to the code at the end of layout_class_type. However, the A >>virtual base isn't located in that B; it's located after the data >>members of C. So, the base field for B is incorrect. > > > If you give me guys a way to detect this case from the middle end, i'm > happy to say "Don't walk this structure, it's not really there". > > :) I don't think there's anyway to do that reliably. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22488
