This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug c++/48035] [4.4/4.5/4.6 Regression] Mismatch on size of class when initializing hierarchy involving virtual inheritance and empty base classes
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 9 Mar 2011 14:04:00 +0000
- Subject: [Bug c++/48035] [4.4/4.5/4.6 Regression] Mismatch on size of class when initializing hierarchy involving virtual inheritance and empty base classes
- Auto-submitted: auto-generated
- References: <bug-48035-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48035
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-09 14:03:35 UTC ---
I think the problem is that build_zero_init isn't aware of the
DECL_FIELD_IS_BASE FIELD_DECLs and CLASSTYPE_AS_BASE stuff. So when
simplify_aggr_init_expr decides to call build_zero_init on the
SpecificImplementation type, while the first FIELD_DECL has size 8 and its type
also size 8, the second FIELD_DECL has size 12 (CLASSTYPE_SIZE_UNIT), its type
has size 24 and thus what build_zero_init returns on the subtype isn't directly
usable as ctor of the outer type.