[PATCH] Microsoft C Record Layout

[John McCall]

On Jun 28, 2013, at 2:50 PM, Warren Hunt <whunt at google.com> wrote:
> That is reasonable, we can certainly fuse them into a single file and that will make sharing some C-layout code easier.  I can do that.  I personally find (more) smaller files easier to navigate and tend to break things apart.  Of course that causes either duplication of code or re-factoring into headers.

I'd strongly prefer to avoid any unnecessary duplication here just because there are so many small levers affecting class layout, but pulling code into a CRTP (or otherwise) base in a private header wouldn't be unreasonable if the code is like 90% divergent.  I am assuming here that this is not *just* C layout but is also useful for layout of fields in C++ classes (although IIRC MSVC lays out the fields separately and then drops them into the larger class as a chunk, potentially leaving spurious alignment padding after the vfptr/vbptr/bases).

John.