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logging: backends: multidomain: Fix compilation warning

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Fix compilation warning due to taking member from a packed structure
and assigning it to a pointer. Compiler warns that it may be
unaligned. However, it is ensured that it will be aligned by
operations preceding this assignment.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruściński 2024-03-15 08:05:59 +01:00 committed by Fabio Baltieri
parent 2a8b298ee8
commit 90be983d4d
1 changed files with 5 additions and 2 deletions
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7
subsys/logging/backends/log_multidomain_backend.c
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@ -32,13 +32,16 @@ static void process(const struct log_backend *const backend,
return;
}
/* Need to ensure that package is aligned to a pointer size. */
/* Need to ensure that package is aligned to a pointer size even though
* it is in the packed structured.
*/
uint32_t msg_len = Z_LOG_MSG_LEN(fsc_plen, dlen);
uint8_t buf[msg_len + sizeof(void *)] __aligned(sizeof(void *));
size_t msg_offset = offsetof(struct log_multidomain_msg, data);
struct log_multidomain_msg *out_msg =
(struct log_multidomain_msg *)&buf[sizeof(void *) - msg_offset];
struct log_msg *out_log_msg = (struct log_msg *)out_msg->data.log_msg.data;
uintptr_t out_log_msg_ptr = (uintptr_t)out_msg->data.log_msg.data;
struct log_msg *out_log_msg = (struct log_msg *)out_log_msg_ptr;
/* Set ipc message id. */
out_msg->id = Z_LOG_MULTIDOMAIN_ID_MSG;