RFR: 8346157: [Ubsan]: runtime error: pointer index expression with base 0x000000001000 overflowed to 0xfffffffffffffff0 [v3]

[Amit Kumar]

> Fixes ubsan warning in mallocTracker.cpp

Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:

  cap 0 at end and early bailout

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22885/files
  - new: https://git.openjdk.org/jdk/pull/22885/files/6c554b46..cdab784e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22885&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22885&range=01-02

  Stats: 7 lines in 1 file changed: 6 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22885.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22885/head:pull/22885

PR: https://git.openjdk.org/jdk/pull/22885