kernel: mmu: Fix access to unpacked member inside packed struct
The following warning is triggered by GCC when
-Waddress-of-packed-member is enabled:
/home/carles/src/zephyr/zephyr/kernel/mmu.c: In function
'free_page_frame_list_put':
/home/carles/src/zephyr/zephyr/kernel/mmu.c:383:42: warning: taking
address of packed member of 'struct z_page_frame' may result in an
unaligned pointer value [-Waddress-of-packed-member]
383 | sys_slist_append(&free_page_frame_list, &pf->node);
This is due to the fact that sys_snode_t node is an unpacked structure
inside a packed z_page_frame structure, so that the alignment of the
former cannot be ensured if placed inside the latter.
Given that alignment of z_page_frame is ensured by the code, silence the
compiler by going through an intermediate variable.
More info in #16587.
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
1 file changed
