Handle TreeMap::computeIfAbsent when previous mapping with null value existed (in this case spec requires to overwrite the existing mapping)
------------- Commit messages: - 8259622: TreeMap.computeIfAbsent deviates from spec Changes: https://git.openjdk.java.net/jdk/pull/2058/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2058&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8259622 Stats: 24 lines in 2 files changed: 22 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/2058.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/2058/head:pull/2058 PR: https://git.openjdk.java.net/jdk/pull/2058
