RFR: 8203892: Target interface added as marker interface in calls to altMetafactory
Vicente Romero
vicente.romero at oracle.com
Mon May 28 20:09:10 UTC 2018
Please review the fix for [1], which is a regression provoked by [2].
The fix can be find at [3]. The regression could be reproduced with this
test case:
import java.util.*;
import java.util.function.*;
import java.io.*;
class Test {
public static <T> Comparator<T> comparingInt(ToIntFunction<? super
T> keyExtractor) {
Objects.requireNonNull(keyExtractor);
return (Comparator<T> & Serializable)
(c1, c2) -> Integer.compare(keyExtractor.applyAsInt(c1),
keyExtractor.applyAsInt(c2));
}
}
in this case javac generates a BSM to the alternative metafactory, but
after the change for [2] the target type was included as one of the
marker interfaces. This patch fixes that issue.
TIA,
Vicente
[1] https://bugs.openjdk.java.net/browse/JDK-8203892
[2] https://bugs.openjdk.java.net/browse/JDK-8148354
[3] http://cr.openjdk.java.net/~vromero/8203892/webrev.00/
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