The following test failed in the JDK18 CI:

applications/runthese/RunThese30M.java

The log file doesn't have a complete copy of the crash mesg:

[stress.process.err] Iteration done: Compiler at Wed Sep 22 12:03:20 UTC 2021
[stress.process.err] Iteration start: MBean at Wed Sep 22 12:03:41 UTC 2021
Starting picker module.
[stress.process.err] Iteration done: MBean at Wed Sep 22 12:03:46 UTC 2021
[stress.process.err] Iteration done: ThreadDumper at Wed Sep 22 12:03:51 UTC 2021
[stress.process.err] # To suppress the following error report, specify this argument
[stress.process.err] # after -XX: or in .hotspotrc: SuppressErrorAt=\\phaseX.cpp:1743


Here's the crashing thread's stack:

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

Current thread (0x00000258547dbe00): JavaThread "C2 CompilerThread2" daemon [_thread_in_native, id=12776, stack(0x000000d062a00000,0x000000d062b00000)]


Current CompileTask:
C2: 150164 15203 b 4 jdk.internal.loader.URLClassPath::getResource (74 bytes)

Stack: [0x000000d062a00000,0x000000d062b00000]
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0xadd251] os::platform_print_native_stack+0xf1 (os_windows_x86.cpp:235)
V [jvm.dll+0xcfbe15] VMError::report+0x1005 (vmError.cpp:742)
V [jvm.dll+0xcfd7be] VMError::report_and_die+0x7fe (vmError.cpp:1552)
V [jvm.dll+0xcfdf44] VMError::report_and_die+0x64 (vmError.cpp:1333)
V [jvm.dll+0x4cda57] report_vm_error+0xb7 (debug.cpp:282)
V [jvm.dll+0xb1a010] PhaseCCP::analyze+0x4d0 (phaseX.cpp:1780)
V [jvm.dll+0xb17752] PhaseCCP::PhaseCCP+0xd2 (phaseX.cpp:1730)
V [jvm.dll+0x486216] Compile::Optimize+0xc76 (compile.cpp:2227)
V [jvm.dll+0x483537] Compile::Compile+0x1457 (compile.cpp:785)
V [jvm.dll+0x3b33e1] C2Compiler::compile_method+0x121 (c2compiler.cpp:110)
V [jvm.dll+0x49c532] CompileBroker::invoke_compiler_on_method+0x7d2 (compileBroker.cpp:2290)
V [jvm.dll+0x499e27] CompileBroker::compiler_thread_loop+0x2b7 (compileBroker.cpp:1966)
V [jvm.dll+0xc866dd] JavaThread::thread_main_inner+0x1fd (thread.cpp:1281)
V [jvm.dll+0xc7cc84] Thread::call_run+0x1b4 (thread.cpp:365)
V [jvm.dll+0xadbc0e] thread_native_entry+0xae (os_windows.cpp:544)
C [ucrtbase.dll+0x1fb80]
C [KERNEL32.DLL+0x84d4]
C [ntdll.dll+0x51781]