Re: [PATCH][2.6] IBM PowerPC Virtual Ethernet Driver

[viro]

On Tue, Feb 17, 2004 at 08:46:52PM -0800, Linus Torvalds wrote:
> > ago.  Any assumptions regarding their allocation are non-portable.
> 
> Well, to be fair, most compilers still aim to make them useful. 
> 
> There's a difference between "the standard doesn't guarantee anything" and 
> "the implementation makes no sense". 
> 
> (Sadly, a lot of compiler people do seem to look to standards more than
> actual users for guides to do things, but at the same time I do believe
> that gcc has useful semantics for bitfields and hardware accesses. You
> just have to know what the implementation-specific rules are)

True.  However, most of the bitfield uses I've seen would become much cleaner
from rewrite to explicit mask-and-shift stuff.
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