------- Comment #4 from tromey at gcc dot gnu dot org 2010-06-11 14:53 ------- I think the problem with this patch is that it leaves gdb no way to determine which approach it should use. This is important because there is a lot of existing code compiled with the incorrect approach.
Currently gdb has a heuristic where it uses the incorrect style if it sees DW_AT_containing_type in the virtual function's DIE. This appears to be a GNU extension (you can see it at the end of the patch, in the context -- but there is another instance in dwarf2out.c). Maybe removing that would help. I'm not sure if it is needed and/or useful for some other reason, maybe a little exploration of the history would help. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44126
