RFR: 8332960: ubsan: classListParser.hpp:159:12: runtime error: load of value 2101478704, which is not a valid value for type 'ParseMode'

[Matthias Baesken]

When running with ubsan enabled binaries, the following error occurs in some jtreg tests :

/jdk/src/hotspot/share/cds/classListParser.hpp:159:12: runtime error: load of value 2101478704, which is not a valid value for type 'ParseMode'
    #0 0x7fff7920f3dc in ClassListParser::ClassListParser(char const*, ClassListParser::ParseMode) (/images/jdk/lib/server/libjvm.so+0x534f3dc)
    #1 0x7fff7af824b8 in MetaspaceShared::preload_classes(JavaThread*) (/images/jdk/lib/server/libjvm.so+0x70c24b8)
    #2 0x7fff7af8ffa8 in MetaspaceShared::preload_and_dump_impl(JavaThread*) (/images/jdk/lib/server/libjvm.so+0x70cffa8)
    #3 0x7fff7af90978 in MetaspaceShared::preload_and_dump() (/images/jdk/lib/server/libjvm.so+0x70d0978)
    #4 0x7fff7bf4c7f4 in Threads::create_vm(JavaVMInitArgs*, bool*) (/images/jdk/lib/server/libjvm.so+0x808c7f4)
    #5 0x7fff7a5620b4 in JNI_CreateJavaVM (/images/jdk/lib/server/libjvm.so+0x66a20b4)
    #6 0x7fff81073068 in InitializeJVM /jdk/src/java.base/share/native/libjli/java.c:1550
    #7 0x7fff81073068 in JavaMain /jdk/src/java.base/share/native/libjli/java.c:491
    #8 0x7fff8107ef1c in ThreadJavaMain /jdk/src/java.base/unix/native/libjli/java_md.c:642
    #9 0x7fff80f99714 in start_thread (/lib64/libpthread.so.0+0x9714)
    #10 0x7fff8034b774 in __GI___clone (/lib64/libc.so.6+0x13b774)

Seems _parse_mode is initialized too late.

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Commit messages:
 - JDK-8332960

Changes: https://git.openjdk.org/jdk/pull/19411/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19411&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332960
  Stats: 3 lines in 1 file changed: 1 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/19411.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19411/head:pull/19411

PR: https://git.openjdk.org/jdk/pull/19411