Took me some time to spot the difference in behaviour (adaptation of method type in Binder)!
+1 Hannes > Am 04.12.2017 um 13:40 schrieb Attila Szegedi <szege...@gmail.com>: > > Please review JDK-8192970 "Element getters/setters with fixed key fail to > link properly" at <http://cr.openjdk.java.net/~attila/8192970/webrev.jdk> for > <https://bugs.openjdk.java.net/browse/JDK-8192970> > > Note that this is unrelated to the previous refactoring (8191878), it is > present even before that and also in JDK9, I’ll have to separately produce a > backport fix for it. I discovered this while trying to expand the test > coverage (and good thing that I did, too…) > > The gist of the problem is that convertArgToNumber as it was before will fail > with IndexOutOfBoundsException invoking parameterType(1) on method type for > fixed-key getters, as they only have one parameter at index 0. > > The fix is to move the logic into the Binder and use the methodType it > manages, not the call site method type. This works because Binder always > works with a method type as if the getter/setter were variable-key (it adds > back the parameter type in its constructor if the operation is for a fixed > key). > > Thanks, > Attila.