RFR: 8293456: runtime/os/TestTracePageSizes.java sub-tests fail with "AssertionError: No memory range found for address: NNNN" [v2]

[Brian Burkhalter]

> Do not use direct copy if the source size is zero as this may fail on some configurations but appear to succeed.

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

  8293456: Fix typo

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Changes:
  - all: https://git.openjdk.org/jdk/pull/10204/files
  - new: https://git.openjdk.org/jdk/pull/10204/files/036408e4..6e5c69f7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10204&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10204&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/10204.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10204/head:pull/10204

PR: https://git.openjdk.org/jdk/pull/10204