RFR: 8306623: (bf) CharBuffer::allocate throws unexpected exception type with some CharSequences [v3]

[Brian Burkhalter]

> When appending a `CharBuffer`, perform a specific check for buffer overflow before invoking `put()`.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8306623: Add overlooked issue ID to @bug

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13632/files
  - new: https://git.openjdk.org/jdk/pull/13632/files/118076c9..cc3acc94

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13632&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13632&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/13632.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13632/head:pull/13632

PR: https://git.openjdk.org/jdk/pull/13632