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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 <doko@debian.org> 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 <raphael.jolly@free.fr> wrote:
It selects the "Zero" VM, which I assume is the one used on mips64el.


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 Hmm, it looks like Zero is not supported on MIPS at the moment, but perhaps that site is just out-of-date?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 <tiago.daitx@canonical.com> 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

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.


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

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