RFR: 8279143: Undefined behaviours in globalDefinitions.hpp [v2]

[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:

  typo

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6930/files
  - new: https://git.openjdk.java.net/jdk/pull/6930/files/3960982e..c84bc84f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6930&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6930&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 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