[jdk11u-dev] RFR: 8282467: add extra diagnostics for JDK-8268184

[Goetz Lindenmaier]

I backport this for parity with 11.0.17-oracle.

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Commit messages:
 - Backport d3022f87b598398d7130e984088ede6ffc9f48e1

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/1125/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=1125&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8282467
  Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/1125.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/1125/head:pull/1125

PR: https://git.openjdk.java.net/jdk11u-dev/pull/1125