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tests: kernel: Fix address-of-packed-mem warning

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The warning below appears once -Waddress-of-packed-mem is enabled:

/__w/zephyr/zephyr/tests/kernel/mem_protect/userspace/src/main.c: In
function 'test_main':
/__w/zephyr/zephyr/tests/kernel/mem_protect/userspace/src/main.c:1024:17:
error: converting a packed 'k_thread_stack_t' {aka 'struct
z_thread_stack_element'} pointer (alignment 1) to a 'struct
z_x86_thread_stack_header' pointer (alignment 4096) may result in an
unaligned pointer value [-Werror=address-of-packed-member]
 1024 |  hdr = ((struct z_x86_thread_stack_header *)ztest_thread_stack);

To avoid the warning, use an intermediate void * variable.

More info in #16587.

Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
This commit is contained in:
Carles Cufi 2021-12-08 13:09:58 +01:00 committed by Carles Cufí
parent 710e03b990
commit cfbaac6733
1 changed files with 4 additions and 2 deletions
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6
tests/kernel/mem_protect/userspace/src/main.c
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@ -1012,16 +1012,18 @@ void test_main(void)
#if defined(CONFIG_ARM64)
struct z_arm64_thread_stack_header *hdr;
void *vhdr = ((struct z_arm64_thread_stack_header *)ztest_thread_stack);
hdr = ((struct z_arm64_thread_stack_header *)ztest_thread_stack);
hdr = vhdr;
priv_stack_ptr = (((char *)&hdr->privilege_stack) +
(sizeof(hdr->privilege_stack) - 1));
#elif defined(CONFIG_ARM)
priv_stack_ptr = (char *)z_priv_stack_find(ztest_thread_stack);
#elif defined(CONFIG_X86)
struct z_x86_thread_stack_header *hdr;
void *vhdr = ((struct z_x86_thread_stack_header *)ztest_thread_stack);
hdr = ((struct z_x86_thread_stack_header *)ztest_thread_stack);
hdr = vhdr;
priv_stack_ptr = (((char *)&hdr->privilege_stack) +
(sizeof(hdr->privilege_stack) - 1));
#elif defined(CONFIG_RISCV)