[jdk11u-dev] RFR: 8257993: vmTestbase/nsk/jvmti/RedefineClasses/StressRedefine/TestDescription.java crash intermittently

[Lutz Schmidt]

This backport is for parity with 11.0.21-oracle

Patch (from jdk16) did not apply at all. Basically, it is a fresh implementation, guided by the original fix. Had to introduce new method "Method* get_new_method() const;" in method.hpp. Did not exist in 11.

Local testing successful.
SAP internal nightly build and test pending.
Reviews pending.

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

Commit messages:
 - Backport 0a3e446ad95b09de2facee7107f7c1206339ee0d

Changes: https://git.openjdk.org/jdk11u-dev/pull/2051/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2051&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8257993
  Stats: 33 lines in 2 files changed: 11 ins; 10 del; 12 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2051.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2051/head:pull/2051

PR: https://git.openjdk.org/jdk11u-dev/pull/2051