JDK-8051973 : Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
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Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap, causing verification to fail.
I.e. run gc/ArrayJuggle/Juggle34 with -XX:+G1VerifyBitmaps (and enabled eager reclaim) to reproduce.
The changeset includes a new regression test for this issue. The test lists this bugid in the @bug list. No "noreg" Label necessary.
I=M, verification failure in debug builds with G1VerifyBitmaps enabled
L=M, requires some circumstances to align up, won't happen every time the vm is started
W=L, disable G1VerifyBitmaps, a debug verification flag