Hi Stefan and Paul,

Thank you for taking care and fixing this regression!

It seems, the fix from Paul is more complete and is better to push after testing.
It looks good to me.

Unfortunately, there is very limited test coverage for this.

Thanks,
Serguei


On 8/14/20 09:47, Stefan Karlsson wrote:
On 2020-08-14 18:39, Hohensee, Paul wrote:
Makes sense to me to do a followup. I've filed https://bugs.openjdk.java.net/browse/JDK-8251848.

Great.


I ran TEST="test/jdk/sun/tools/jmap/BasicJMapTest.java" JTREG="JAVA_OPTIONS=-XX:+UseParallelGC -XX:ParallelGCThreads=100" successfully, including your patch for 8251570.

This 8251835 patch looks good to me.

Thanks!

StefanK


Thanks,
Paul

On 8/14/20, 7:49 AM, "Stefan Karlsson" <stefan.karls...@oracle.com> wrote:

     Hi all,

     Please review this patch to fix a recently introduced jmap bug.

     https://cr.openjdk.java.net/~stefank/8251835/webrev.01/
     https://bugs.openjdk.java.net/browse/JDK-8251835

     I added the same kind of checks that we have in histo.

     Testing:
     - Tested locally with the failing test
     - Tier1-tier5 on Linux x64

     Paul posted a slightly more elaborate fix that makes dump more akin to
     histo:
     http://cr.openjdk.java.net/~phh/8251835/webrev.00/

     I don't know the testing status of that patch. If this needs to be fixed
     ASAP, I propose my fix, and then add the rest of Pauls bits as a
     follow-up RFE. If we have time to run Paul's patch through testing, then
     I'm fine with that as well.

     Thanks,
     StefanK


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