# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (/oracle/valhalla/open/src/hotspot/share/opto/memnode.cpp:231), pid=3357853, tid=3357867
# assert(is_strict_final_load) failed: sanity check for basic cases
#
# JRE version: Java(TM) SE Runtime Environment (25.0) (fastdebug build 25-lworld5ea-LTS-2025-04-22-0723438.tobias...)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 25-lworld5ea-LTS-2025-04-22-0723438.tobias..., mixed mode, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# V [libjvm.so+0x15fb659] MemNode::optimize_simple_memory_chain(Node*, TypeOopPtr const*, Node*, PhaseGVN*)+0xff9

Current CompileTask:
C2:2733 109 Test::test (13 bytes)

Stack: [0x00007cec85900000,0x00007cec85a00000], sp=0x00007cec859fafb0, free space=1003k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x15fb659] MemNode::optimize_simple_memory_chain(Node*, TypeOopPtr const*, Node*, PhaseGVN*)+0xff9 (memnode.cpp:231)
V [libjvm.so+0x15fb70e] MemNode::optimize_memory_chain(Node*, TypePtr const*, Node*, PhaseGVN*)+0x2e (memnode.cpp:330)
V [libjvm.so+0x16067bf] LoadNode::Ideal(PhaseGVN*, bool)+0x1ff (memnode.cpp:2026)
V [libjvm.so+0x17df5fd] PhaseIterGVN::transform_old(Node*)+0xbd (phaseX.cpp:668)
V [libjvm.so+0x17d4ace] PhaseIterGVN::optimize()+0x9e (phaseX.cpp:1046)
V [libjvm.so+0xb253cd] Compile::Optimize()+0x32d (compile.cpp:2768)
V [libjvm.so+0xb28f3b] Compile::Compile(ciEnv*, ciMethod*, int, Options, DirectiveSet*)+0x1feb (compile.cpp:874)
V [libjvm.so+0x94e81d] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x46d (c2compiler.cpp:142)
V [libjvm.so+0xb37bc2] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xb22 (compileBroker.cpp:2307)
V [libjvm.so+0xb38bc8] CompileBroker::compiler_thread_loop()+0x588 (compileBroker.cpp:1951)
V [libjvm.so+0x1091a9f] JavaThread::thread_main_inner()+0x12f (javaThread.cpp:773)
V [libjvm.so+0x1ac1706] Thread::call_run()+0xb6 (thread.cpp:231)
V [libjvm.so+0x1748608] thread_native_entry(Thread*)+0x128 (os_linux.cpp:877)

The problematic load is a null marker load emitted here:

    Node* adr = kit->basic_plus_adr(obj, ptr, null_marker_offset);
    Node* nm_value = kit->access_load_at(obj, adr, TypeRawPtr::BOTTOM, TypeInt::BOOL, T_BOOLEAN, is_array ? (decorators | IS_ARRAY) : decorators);
    vt->set_req(IsInit, nm_value);

It does not belong to any field and therefore 'field' is nullptr.