RFR: JDK-8308288: Fix xlc17 clang warnings in shared code [v2]

Fri May 26 10:24:55 UTC 2023

On Fri, 26 May 2023 10:05:56 GMT, JoKern65 <duke at openjdk.org> wrote:

> src/java.base/unix/native/libnio/fs/UnixNativeDispatcher.c:1251:7: error: '_ALLBSD_SOURCE' is not defined, evaluates to 0 [-Werror,-Wundef]
> #elif _ALLBSD_SOURCE
> 

Should probably better be
`#elif defined(_ALLBSD_SOURCE)`

-------------

PR Comment: https://git.openjdk.org/jdk/pull/14146#issuecomment-1564168769