RFR: 8251329: (zipfs) Files.walkFileTree walks infinitely if zip has dir named "." inside

[Lance Andersen]

Hi,

As discussed in the https://mail.openjdk.java.net/pipermail/core-libs-dev/2021-July/079621.html thread, this is the revised patch to address the use of '.' and '..' within Zip FS

Zip FS needs to use "." and ".." as links to the current and parent directories and cannot reliably support entries that have "." and ".." as name elements.  This patch updates Zip Fs  to reject ZIP files that have entries in the CEN that can't be used for files in a file system.


Mach5 tiers 1 through 3 have been run without any errors encountered .

Best,
Lance

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Commit messages:
 - Address missing linefeed  after package name
 - Address overzelous intellij import update
 - Patch to address JDK-8251329

Changes: https://git.openjdk.java.net/jdk/pull/4900/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4900&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8251329
  Stats: 174 lines in 2 files changed: 174 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4900.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4900/head:pull/4900

PR: https://git.openjdk.java.net/jdk/pull/4900