RFR: 8377707: [Linux Alpine] Build failure after JDK-8377368

Mon Feb 16 09:15:20 UTC 2026

On Mon, 16 Feb 2026 09:04:36 GMT, Yasumasa Suenaga <ysuenaga at openjdk.org> wrote:

> I think it is better to keep to use `off64_t` and `sendfile64` because `off_t` is `signed int`. https://man7.org/linux/man-pages/man3/off_t.3type.html (but it wouldn't be a problem if we use `off_t` because vDSO is not so large, I believe)
> 
> IMHO it is better if we can use `#ifdef`.

I think we avoid this by defining `_FILE_OFFSET_BITS=64`  for the whole JDK build .
See
https://github.com/openjdk/jdk/blob/b9406a5dbaac7082419ea936f3cc3e61e6ac96d0/make/autoconf/flags-cflags.m4#L462

https://bugs.openjdk.org/browse/JDK-8165620

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PR Comment: https://git.openjdk.org/jdk/pull/29710#issuecomment-3907272455