[PATCH 1/3] Revert "staging: mmal-vchiq: Avoid use of bool in structures"

Dan Carpenter error27 at gmail.com
Fri Nov 18 00:35:52 PST 2022


On Fri, Nov 18, 2022 at 01:12:32AM +0100, Andrew Lunn wrote:
> 
> Does :1 really initialise the variable?

Obviously not.

> In "u32 enabled:1" it means
> this is a 1 bit wide bit field. It seems odd that bool is somehow
> special and :1 means something else.

If you have a bunch of consecutive bool a:1; bool b:1; then GCC will
squeeze them into the same byte.  But if you have bool a; bool b; then
they each take a byte with GCC.  I have specified GCC because the size
of bool types are a bit vague in the C standard.

regards,
dan carpenter



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