git: openjdk/jdk11u-dev: 8214761: Bug in parallel Kahan summation implementation

[Goetz Lindenmaier]

Changeset: a481c9a6
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2021-12-09 12:44:23 +0000
URL:       https://git.openjdk.java.net/jdk11u-dev/commit/a481c9a6694aa0e8cb5d8d88014cfe9092ac76e1

8214761: Bug in parallel Kahan summation implementation

Backport-of: dd871819a05886ee09fc00c7c778268440ebedb7

! src/java.base/share/classes/java/util/DoubleSummaryStatistics.java
! src/java.base/share/classes/java/util/stream/Collectors.java
! src/java.base/share/classes/java/util/stream/DoublePipeline.java
+ test/jdk/java/util/DoubleStreamSums/CompensatedSums.java
+ test/jdk/java/util/DoubleSummaryStatistics/NegativeCompensation.java