"unsupported integer type: ADDRESS" on Linux ARM64

[martin-g]

Hello,

I am trying to build https://github.com/Alluxio/alluxio on Linux ARM64 but one of its tests fails with:

[ERROR] alluxio.fuse.AlluxioFuseFileSystemTest.flush  Time elapsed: 0.026 s  <<< ERROR!
java.lang.IllegalArgumentException: unsupported integer type: ADDRESS
	at jnr.ffi.provider.AbstractMemoryIO.getInt(AbstractMemoryIO.java:151)
	at jnr.ffi.Struct$IntegerAlias.get(Struct.java:1007)
	at alluxio.fuse.AlluxioFuseFileSystem.flushInternal(AlluxioFuseFileSystem.java:356)
	at alluxio.fuse.AlluxioFuseFileSystem.lambda$flush$3(AlluxioFuseFileSystem.java:352)
	at alluxio.fuse.AlluxioFuseUtils.call(AlluxioFuseUtils.java:278)
	at alluxio.fuse.AlluxioFuseFileSystem.flush(AlluxioFuseFileSystem.java:352)
	at alluxio.fuse.AlluxioFuseFileSystemTest.flush(AlluxioFuseFileSystemTest.java:209)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        ...

The source code of the test can be found here: https://github.com/Alluxio/alluxio/blob/15f8b3b40bf5c580ed0879e8ca7c7174348f7ee8/integration/fuse/src/test/java/alluxio/fuse/AlluxioFuseFileSystemTest.java

The test passes successfully on Linux x86_64. The native type there is ULONGLONG.

I've updated jnr-fuse to 0.5.7, jnr-jffi to 1.3.5, jnr-ffi to 2.2.7.

Any hints why it fails on ARM64 and how to fix it ?
Thanks!

[martin-g]

I think the problem is here:

1. Linux aarch64:

   jnr-ffi/src/main/java/jnr/ffi/provider/jffi/platform/aarch64/linux/TypeAliases.java

   Lines 37 to 38 in e7a7da6

   	m.put(TypeAlias.int64_t, NativeType.ADDRESS);
   	m.put(TypeAlias.u_int64_t, NativeType.ADDRESS);

2. Linux x86_64:

   jnr-ffi/src/main/java/jnr/ffi/provider/jffi/platform/x86_64/linux/TypeAliases.java

   Lines 37 to 38 in e7a7da6

   	m.put(TypeAlias.int64_t, NativeType.SLONGLONG);
   	m.put(TypeAlias.u_int64_t, NativeType.ULONGLONG);

Is this difference intentional ?

[martin-g]

PR: #284