harmony 鸿蒙ArkCompiler Subsystem Changelog

2025-06-12
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ArkCompiler Subsystem Changelog

cl.arkcompiler.1 Field __unused in the stat, shminfo, msqid_ds, icmphdr, mq_attr, and utmpx Structs Is Renamed __unused1

Access Level

Public API

Change Reason

The __unused field in the stat, shminfo, msqid_ds, icmphdr, mq_attr, and utmpx structs conflicts with the __unused macro definition in sys/cdefs.h. If both of them are imported, a build error is reported.

Change Impact

This change is a non-compatible change.

In API version 11 and earlier versions, the __unused field in the preceding structs can be used normally.

In API version 12 and later versions, a build error is reported when the __unused field in the preceding structs is used. You need to change the __unused field to __unused1.

Start API Level

Change Since

OpenHarmony SDK 5.0.0.22

Key API/Component Changes

Structs stat, shminfo, msqid_ds, icmphdr, mq_attr, and utmpx

Adaptation Guide

If the __unused field in the preceding structs is used, change it to __unused1.

If the field is not used, no adaptation is required.

The __unused macro definition in cdefs.h is not affected.