[foreign] RFR 8218052: Don't throw an exception when encountering a type with a flexible array member

[Jorn Vernee]

Bump :)

Updated webrev: 
http://cr.openjdk.java.net/~jvernee/panama/webrevs/8218052/webrev.01/

FWIW, I changed the exception into a proper warning message, so most of 
the changes come from having to pass the Context down to the 
RecordLayoutComputer.

Cheers,
Jorn

Jorn Vernee schreef op 2019-01-31 13:08:
> Hi,
> 
> From the bug description:
> 
> Currently jextract throws an UnsopportedOpperationException when
> encountering a type that has a flexible array member.
> 
> As a result of that no class is written for the type, and when loading
> the enclosing interface this throws a NoClassDefFoundError,
> prohibiting use of the entire header interface.
> 
> We could mitigate this problem by emitting an undefined layout
> reference instead of throwing an exception, which would only make the
> type with the flexible array unusable, but still allow other things in
> the same interface to be used.
> 
> Please review the following:
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8218052
> Webrev: 
> http://cr.openjdk.java.net/~jvernee/panama/webrevs/8218052/webrev.00
> 
> Thanks,
> Jorn