Re: Totally broken PCI PM calls

[Linus Torvalds]

On Mon, 11 Oct 2004, Pavel Machek wrote:
> 
> Does sparse now have typechecking on enums?

You can mark an enum "bitwise" (by making all of it's values be
"bitwise"), and it will be considered a type of its own, yes. But then you
also cannot do arithmetic on it (which _usually_ is what you want, but not
necessarily always).

(You'd also need to pass in the "-Wbitwise" flag to sparse, to get the
checks).

By the time you mark something "bitwise", you don't even need to use an
enum, btw. You can just do a regular integer typedef and mark the typedef 
to be "bitwise" - that generates a unique type right there. That's what 
the endianness checking does.

		Linus
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