RFR: 8279143: Undefined behaviours in globalDefinitions.hpp [v3]

[Quan Anh Mai]

> Hi,
> 
> This patch replaces undefined behaviours in globalDefinitions.hpp by proper well-defined ones.
> 
> Thank you very much.

Quan Anh Mai has updated the pull request incrementally with one additional commit since the last revision:

  update copyright

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6930/files
  - new: https://git.openjdk.java.net/jdk/pull/6930/files/c84bc84f..88c4305c

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6930&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6930&range=01-02

  Stats: 6 lines in 4 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6930.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6930/head:pull/6930

PR: https://git.openjdk.java.net/jdk/pull/6930