Re: Potential bug in openjdk-11 on mips64el

Thank you all for your inputs and suggestions!

On Sat, Feb 13, 2021 at 2:43 AM Matthias Klose <[email protected]> wrote:

>
> you could try to debug with java -zero / javac -J-zero on amd64.


Done! [1] Unfortunately, I don't see anything useful there but perhaps one
of you will.

On Sat, Feb 13, 2021 at 2:21 PM <[email protected]> wrote:

> It selects the "Zero" VM, which I assume is the one used on mips64el.
>
> https://openjdk.java.net/projects/zero/


Ah, thanks for the explanation! It helped me to appropriately adjust
build-depends. Hmm, it looks like Zero is not supported on MIPS at the
moment, but perhaps that site is just out-of-date?

On Sat, Feb 13, 2021 at 6:56 PM Tiago Daitx <[email protected]>
wrote:

>
> This seems to indicate that the isDirectory call [4] is getting wrong
> file attributes. Following the trail, those file attributes come from
> a fstatat call [5] which ultimately come from the native stack in
> UnixNativeDispatcher.c [6]. The actual way that fstatat is called
> depends on the build flags and defines from the arch, so somebody with
> better knowledge might want to take a look at UnixNativeDispatcher.c
> [6] and tell if OpenJDK is picking the right function to call for
> mips64el.
>

Thanks for the excellent analysis! So is this indeed a bug in OpenJDK on
mips64el then? I'm happy to file the bug, referencing all of the
information in this thread, if that's the probable culprit here.

-Olek

[1]
https://gist.githubusercontent.com/olekw/32e54c0829d739e8fa88893a853c0fa8/raw/b2fce4d2ab77555a3d28c22441f1de3cb2d99f38/bazel-bootstrap-zero-jre