[oe] need help: cdrkit & bitifields

[Phil Blundell]

On Thu, 2009-03-05 at 22:10 +0100, Frans Meulenbroeks wrote:
> main(int argc, char **argv)
> {
>     char c = 0xf0;
>     bitfields *bf = &c;

This isn't a legal thing to do.  Struct addresses on ARM need to be
32-bit aligned, whereas &c is only guaranteed aligned to an 8-bit
boundary.  You can't, in general, take a pointer to an arbitrary type,
cast it to a struct and expect to get good results.

You need to use a union, or something like:

struct wrapped_char {
	char c;
}

struct wrapped_char wc;
wc.c = 0xf0;
bitfields &bf = &wc;

p.