# Error: assert(!vbox->is_Phi()) failed

Current CompileTask:
C2: 50944 6357 % b compiler.vectorapi.VectorCastShape64Test::testIntToShort @ 50 (110 bytes)

Stack: [0x00007fd78dcfd000,0x00007fd78ddfe000], sp=0x00007fd78ddf9030, free space=1008k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x1917df3] PhaseVector::expand_vbox_node_helper(Node*, Node*, TypeInstPtr const*, TypeVect const*)+0xb3
V [libjvm.so+0x1918ac8] PhaseVector::expand_vbox_node(VectorBoxNode*)+0x1a8
V [libjvm.so+0x1918d5b] PhaseVector::expand_vbox_nodes()+0x14b
V [libjvm.so+0x191b6ec] PhaseVector::optimize_vector_boxes()+0xdc
V [libjvm.so+0xa05146] Compile::Optimize()+0xec6
V [libjvm.so+0xa0751e] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, bool, DirectiveSet*)+0x15ae
V [libjvm.so+0x820136] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x646
V [libjvm.so+0xa17819] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xc39
V [libjvm.so+0xa18478] CompileBroker::compiler_thread_loop()+0x518
V [libjvm.so+0x189456c] JavaThread::thread_main_inner()+0x27c
V [libjvm.so+0x189ab20] Thread::call_run()+0x100
V [libjvm.so+0x1578314] thread_native_entry(Thread*)+0x104