RFR(S) 8226406: JVM fails to detect mismatched or corrupt CDS archive
calvin.cheung at oracle.com
Thu Jul 4 00:59:00 UTC 2019
This bug was found during a bootcycle build when a shared archive built
by a 64-bit JDK version is used by a 32-bit JDK version. It is due to
some of the important header fields such as the _jvm_ident was not
checked prior to accessinng other fields such as the _paths_misc_info_size.
This fix involves checking most the fields in CDSFileMapHeaderBase
before accessing other fields.
Testing: tiers 1-3.
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