On Tue, Jun 23, 2009 at 8:48 PM, Jerry Quinn<jlqu...@optonline.net> wrote: > Hi, folks, > > I'm having trouble seeing how layout is specified at the GENERIC level > for RECORD_TYPEs. The docs and comments in tree.def say that you cannot > rely on the order of fields of the type. In stor-layout.c, > layout_types() seems to do the obvious thing, taking the fields in > order, but the docs make it sound like there is no way to be sure what > you'll get. > Could someone please clear up my confusion?
The confusion here is that layout_types is separate from the rest of the middle-end and the front-end could do the layout themselves and the front-end calls layout_type if it does not do the layout itself. So for an example, Ada layouts the records themselves and some times has a different order of the fields than the layouted offsets. Thanks, Andrew Pinski