[jdk16u] RFR: 8267345: VM crashes during dumping classlist with -Xshare:dump option [v2]

[Yumin Qi]

> Hi, Please review
>   The problem is caused by JDK-8247536: Support for pre-generated java.lang.invoke classes in CDS static archive
>    Usually the dump with an appointed class list file, -XX:SharedClassListFile=<classlist>, the 'classlist' is collected by pre-run the application with -XX:DumpLoadedClassList, so it is rare case using -Xshare:dump and -XX:DumpLoadedClassList together, though we can do that.
>    It is reproducible by run
>    java -Xshare:dump -XX:DumpLoadedClassList=<any valid file name>
>    The problem happened when regenerating lambda form invoker's holder classes, with which the re-generated class stream without a source associated (class is generated on fly).  Referencing to NULL source failed. Fix checks if source is valid.
> 
> Tests: tier1,tier2,tier3,tier4
> 
> Thanks
> Yumin

Yumin Qi has updated the pull request incrementally with one additional commit since the last revision:

  Fixed skipping printout, changed Copyright year

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

Changes:
  - all: https://git.openjdk.java.net/jdk16u/pull/119/files
  - new: https://git.openjdk.java.net/jdk16u/pull/119/files/aabbe535..f13049a8

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk16u&pr=119&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk16u&pr=119&range=00-01

  Stats: 3 lines in 1 file changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk16u/pull/119.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16u pull/119/head:pull/119

PR: https://git.openjdk.java.net/jdk16u/pull/119