[coreboot-gerrit] Change in coreboot[master]: include/list.h: Add support for GCC9+

[Nico Huber (Code Review)]

Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/44573 )

Change subject: include/list.h: Add support for GCC9+
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Patch Set 2: Code-Review+2

(1 comment)

https://review.coreboot.org/c/coreboot/+/44573/2/src/include/list.h 
File src/include/list.h:

https://review.coreboot.org/c/coreboot/+/44573/2/src/include/list.h@23 
PS2, Line 23: 			typeof(*(ptr)), member))
Untested, but we can simply avoid the overflow by adding another
variable:

#define list_for_each(ptr, head, member)                                \
            for (struct list_node *it = (head).next,                        \
                    (ptr) = container_of(it, typeof(*(ptr)), member);       \
                 it != NULL;                                                        \
                 it = it->next,                                             \
                    (ptr) = container_of(it, typeof(*(ptr)), member))

OTOH, `it` would ideally be declared outside the macro which would require
us to adapt all invocations.