Changed eclipse to run on latest JDK 13 and got this C2 crash after 11 mins:

siginfo: si_signo: 11 (SIGSEGV), si_code: 1 (SEGV_MAPERR), si_addr: 0x0000000000000010

V [libjvm.so+0x53a230] PhiNode::Value(PhaseGVN*) const+0x120
V [libjvm.so+0xc1538a] PhaseIterGVN::transform_old(Node*)+0x12a
V [libjvm.so+0xc11734] PhaseIterGVN::optimize()+0xf4
V [libjvm.so+0xe1866e] ZBarrierSetC2::optimize_loops(PhaseIdealLoop*, LoopOptsMode, VectorSet&, Node_Stack&, Node_List&) const+0x57e
V [libjvm.so+0xa7e3ca] PhaseIdealLoop::build_and_optimize(LoopOptsMode)+0xb6a
V [libjvm.so+0x5e7c55] PhaseIdealLoop::optimize(PhaseIterGVN&, LoopOptsMode)+0x1d5
V [libjvm.so+0x5e643a] Compile::Optimize()+0xc7a
V [libjvm.so+0x5e73fb] Compile::Compile(ciEnv*, C2Compiler*, ciMethod*, int, bool, bool, bool, DirectiveSet*)+0xd7b
V [libjvm.so+0x5220fc] C2Compiler::compile_method(ciEnv*, ciMethod*, int, DirectiveSet*)+0xbc
V [libjvm.so+0x5ef52c] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x38c
V [libjvm.so+0x5f08e8] CompileBroker::compiler_thread_loop()+0x4e8
V [libjvm.so+0xd641b2] JavaThread::thread_main_inner()+0xe2
V [libjvm.so+0xd68e1d] Thread::call_run()+0x10d
V [libjvm.so+0xbbbb57] thread_native_entry(Thread*)+0xe7