RFR: 8333363: ubsan: instanceKlass.cpp: runtime error: member call on null pointer of type 'struct AnnotationArray'

[Matthias Baesken]

With ubsan enabled binaries we run on Linux aarch64 and Linux x86_64 into this issue :

runtime/CommandLine/PrintClasses_id0.jtr

src/hotspot/share/oops/instanceKlass.cpp:3603:84: runtime error: member call on null pointer of type 'struct AnnotationArray'
    #0 0xfffface09b40 in InstanceKlass::print_on(outputStream*) const src/hotspot/share/oops/instanceKlass.cpp:3603
    #1 0xffffacdcd088 in PrintClassClosure::do_klass(Klass*) src/hotspot/share/oops/instanceKlass.cpp:2228
    #2 0xffffac464200 in ClassLoaderData::classes_do(KlassClosure*) src/hotspot/share/classfile/classLoaderData.cpp:387
    #3 0xffffac475c4c in ClassLoaderDataGraph::classes_do(KlassClosure*) src/hotspot/share/classfile/classLoaderDataGraph.cpp:303
    #4 0xffffac7bc4f4 in VM_PrintClasses::doit() src/hotspot/share/services/diagnosticCommand.cpp:989
    #5 0xffffae599c88 in VM_Operation::evaluate() src/hotspot/share/runtime/vmOperations.cpp:75
    #6 0xffffae5a5a14 in VMThread::evaluate_operation(VM_Operation*) src/hotspot/share/runtime/vmThread.cpp:283
    #7 0xffffae5a779c in VMThread::inner_execute(VM_Operation*) src/hotspot/share/runtime/vmThread.cpp:427
    #8 0xffffae5a7fd8 in VMThread::loop() src/hotspot/share/runtime/vmThread.cpp:493
    #9 0xffffae5a80bc in VMThread::run() src/hotspot/share/runtime/vmThread.cpp:177
    #10 0xffffae396958 in Thread::call_run() src/hotspot/share/runtime/thread.cpp:225
    #11 0xffffadba1b0c in thread_native_entry src/hotspot/os/linux/os_linux.cpp:846
    #12 0xffffb1a9d5c4 (/lib/aarch64-linux-gnu/libc.so.6+0x7d5c4)
    #13 0xffffb1b05ed8 (/lib/aarch64-linux-gnu/libc.so.6+0xe5ed8)

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Commit messages:
 - JDK-8333363

Changes: https://git.openjdk.org/jdk/pull/19885/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19885&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8333363
  Stats: 20 lines in 1 file changed: 16 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/19885.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19885/head:pull/19885

PR: https://git.openjdk.org/jdk/pull/19885