[jdk17u] RFR: 8274338: com/sun/jdi/RedefineCrossEvent.java failed "assert(m != __null) failed: NULL mirror"

[Zhengyu Gu]

On Wed, 3 Nov 2021 17:19:37 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

> A clean backport for parity with Oracle 17.0.3. 
> 
> RedefineCrossEvent.java test passed with default, ZGC and Shenandoah GC

Got approval and pushed

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PR: https://git.openjdk.java.net/jdk17u/pull/226