On Sat, Mar 03, 2018 at 02:27:27PM +0300, Dan Carpenter wrote:
> struct my_type {
> uint64_t base;
> uint8_t irq;
> uint8_t numldrv;
> uint8_t pcibus;
> uint16_t pcidev;
> uint8_t pcifun;
> uint16_t pciid;
> uint16_t pcivendor;
> uint8_t pcislot;
> uint32_t uid;
> } __attribute__ ((packed));
>
> Say I have a pointer to a my_type struct. When I run my code, I
> expected that the expr->ctype->ctype.alignment would be 1 but it's 8
> because the base struct member is 8 bytes.
Hi,
the method is/should be correct but currently sparse doesn't parse
type attributes correctly. More exactly, they are dropped from the
type but attached to the declared variable if there is one in the
same declaration.
If you're interested, I've a fix for this in my dev tree:
git://github.com/lucvoo/sparse-dev.git fix-ignored-type-attributes
This fix is not yet integrated in my main tree because:
1) it triggers a problem with the linearization of bitfields
in a packed struct (warning 'access past of ...')
2) it needs to be done together with a feature request to
better handle __bitwise and enums.
Regards,
-- Luc
--
To unsubscribe from this list: send the line "unsubscribe linux-sparse" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
