Crash happened when run a small test in the attachment

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007fa95e1b72a9, pid=29802, tid=29816
#
# JRE version: OpenJDK Runtime Environment (18.0) (build 18-internal+0-adhoc.root.jdkdev)
# Java VM: OpenJDK 64-Bit Server VM (18-internal+0-adhoc.root.jdkdev, mixed mode, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0xa242a9] PhaseCFG::select(Block*, Node_List&, GrowableArray<int>&, VectorSet&, unsigned int, long*)+0x449
#
# No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# If you would like to submit a bug report, please visit:
# https://bugreport.java.com/bugreport/crash.jsp
#

--------------- S U M M A R Y ------------

Command Line: Test

Host: AMD EPYC 7K62 48-Core Processor, 8 cores, 60000G, CentOS Linux release 7.2 (Final)
Time: Tue Aug 17 18:59:39 2021 CST elapsed time: 0.139895 seconds (0d 0h 0m 0s)

--------------- T H R E A D ---------------

Current thread (0x00007fa958189850): JavaThread "C2 CompilerThread0" daemon [_thread_in_native, id=29816, stack(0x00007fa9004f9000,0x00007fa9005fa000)]


Current CompileTask:
C2: 139 374 4 Test::foo (38 bytes)

Stack: [0x00007fa9004f9000,0x00007fa9005fa000], sp=0x00007fa9005f5350, free space=1008k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0xa242a9] PhaseCFG::select(Block*, Node_List&, GrowableArray<int>&, VectorSet&, unsigned int, long*)+0x449
V [libjvm.so+0xa24e69] PhaseCFG::schedule_local(Block*, GrowableArray<int>&, VectorSet&, long*)+0x8b9
V [libjvm.so+0x7564a3] PhaseCFG::global_code_motion()+0x5a3
V [libjvm.so+0x7577fa] PhaseCFG::do_global_code_motion()+0x4a
V [libjvm.so+0x5961dc] Compile::Code_Gen()+0x29c
V [libjvm.so+0x59bcc7] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, bool, DirectiveSet*)+0x13c7
V [libjvm.so+0x4dd001] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x191
V [libjvm.so+0x5a4468] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xf68
V [libjvm.so+0x5a5098] CompileBroker::compiler_thread_loop()+0x4a8
V [libjvm.so+0xdfff60] JavaThread::thread_main_inner()+0x190
V [libjvm.so+0xe03fee] Thread::call_run()+0xde
V [libjvm.so+0xbd1001] thread_native_entry(Thread*)+0xe1