Core file '/home/munro/junk/pgdata/postgres.core' (x86_64) was loaded.
(lldb) bt
* thread #1, name = 'postgres', stop reason = signal SIGABRT
  * frame #0: 0x00000008039e284a libc.so.7`__sys_thr_kill + 10
    frame #1: 0x00000008039e2814 libc.so.7`raise + 52
    frame #2: 0x00000008039e2789 libc.so.7`abort + 73
    frame #3: postgres`ExceptionalCondition(conditionName=<unavailable>, errorType=<unavailable>, fileName=<unavailable>, lineNumber=<unavailable>) at assert.c:54
    frame #4: postgres`llvm_resolve_symbol(name=<unavailable>, ctx=<unavailable>) at llvmjit.c:581
    frame #5: 0x0000000000bef86f postgres`_ZZN4llvm17OrcCBindingsStack14createResolverEPFmPKcPvES3_ENKUlRKNSt3__112basic_stringIcNS6_11char_traitsIcEENS6_9allocatorIcEEEEE_clESE_ + 575
    frame #6: 0x0000000000bef602 postgres`_ZN4llvm3orc14LambdaResolverIZNS_17OrcCBindingsStack14createResolverEPFmPKcPvES5_EUlRKNSt3__112basic_stringIcNS8_11char_traitsIcEENS8_9allocatorIcEEEEE_ZNS2_14createResolverES7_S5_EUlSG_E0_E24findSymbolInLogicalDylibESG_ + 18
    frame #7: 0x000000000187f063 postgres`llvm::RuntimeDyldImpl::resolveExternalSymbols(void) + 675
    frame #8: 0x000000000187e499 postgres`llvm::RuntimeDyldImpl::resolveRelocations(void) + 201
    frame #9: 0x0000000001884b7e postgres`llvm::RuntimeDyld::finalizeWithMemoryManagerLocking(void) + 30
    frame #10: 0x0000000000bf127d postgres`_ZN4llvm3orc24RTDyldObjectLinkingLayer20ConcreteLinkedObjectINSt3__110shared_ptrINS_11RuntimeDyld13MemoryManagerEEENS4_INS_17JITSymbolResolverEEEZNS1_9addObjectENS4_INS_6object12OwningBinaryINSA_10ObjectFileEEEEES9_EUlNS3_15__list_iteratorINS3_10unique_ptrINS0_28RTDyldObjectLinkingLayerBase12LinkedObjectENS3_14default_deleteISI_EEEEPvEERS5_RKSE_NS3_8functionIFvvEEEE_E8finalizeEv + 221
    frame #11: 0x0000000000bf19fb postgres`_ZNSt3__128__invoke_void_return_wrapperIN4llvm8ExpectedImEEE6__callIJRZNS1_3orc24RTDyldObjectLinkingLayer20ConcreteLinkedObjectINS_10shared_ptrINS1_11RuntimeDyld13MemoryManagerEEENS9_INS1_17JITSymbolResolverEEEZNS7_9addObjectENS9_INS1_6object12OwningBinaryINSF_10ObjectFileEEEEESE_EUlNS_15__list_iteratorINS_10unique_ptrINS6_28RTDyldObjectLinkingLayerBase12LinkedObjectENS_14default_deleteISN_EEEEPvEERSA_RKSJ_NS_8functionIFvvEEEE_E21getSymbolMaterializerENS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEEUlvE_EEES3_DpOT_ + 59
    frame #12: 0x0000000000bf1982 postgres`_ZNSt3__110__function6__funcIZN4llvm3orc24RTDyldObjectLinkingLayer20ConcreteLinkedObjectINS_10shared_ptrINS2_11RuntimeDyld13MemoryManagerEEENS6_INS2_17JITSymbolResolverEEEZNS4_9addObjectENS6_INS2_6object12OwningBinaryINSC_10ObjectFileEEEEESB_EUlNS_15__list_iteratorINS_10unique_ptrINS3_28RTDyldObjectLinkingLayerBase12LinkedObjectENS_14default_deleteISK_EEEEPvEERS7_RKSG_NS_8functionIFvvEEEE_E21getSymbolMaterializerENS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEEUlvE_NS11_IS14_EEFNS2_8ExpectedImEEvEEclEv + 18
    frame #13: 0x0000000000bf1ace postgres`llvm::JITSymbol::getAddress(void) + 62
    frame #14: 0x0000000000becfb5 postgres`llvm::OrcCBindingsStack::findSymbolAddress(unsigned long&, std::__1::basic_string<char, unsigned long&::char_traits<char>, unsigned long&::allocator<char> > const&, bool) + 101
    frame #15: 0x0000000000becf22 postgres`LLVMOrcGetSymbolAddress + 178
    frame #16: postgres`llvm_get_function(context=0x000000080434b260, funcname=<unavailable>) at llvmjit.c:239
    frame #17: postgres`ExecRunCompiledExpr(state=0x00000008043f6758, econtext=0x00000008043f6448, isNull="") at execExprCompile.c:359
    frame #18: postgres`ExecResult [inlined] ExecEvalExprSwitchContext(state=0x00000008043f6758, econtext=0x00000008043f6448, isNull=<unavailable>) at executor.h:310
    frame #19: postgres`ExecResult [inlined] ExecProject(projInfo=0x00000008043f6750) at executor.h:344
    frame #20: postgres`ExecResult(pstate=<unavailable>) at nodeResult.c:136
    frame #21: postgres`standard_ExecutorRun [inlined] ExecProcNode(node=<unavailable>) at executor.h:244
    frame #22: postgres`standard_ExecutorRun [inlined] ExecutePlan(estate=<unavailable>, planstate=0x00000008043f6330, use_parallel_mode='\0', operation=<unavailable>, sendTuples='\x01', numberTuples=0, direction=<unavailable>, dest=<unavailable>) at execMain.c:1721
    frame #23: postgres`standard_ExecutorRun(queryDesc=<unavailable>, direction=<unavailable>, count=0, execute_once=<unavailable>) at execMain.c:364
    frame #24: postgres`PortalRunSelect(portal=0x0000000804364118, forward=<unavailable>, count=0, dest=<unavailable>) at pquery.c:932
    frame #25: postgres`PortalRun(portal=0x0000000804364118, count=<unavailable>, isTopLevel='\x01', run_once=<unavailable>, dest=<unavailable>, altdest=<unavailable>, completionTag=<unavailable>) at pquery.c:773
    frame #26: postgres`exec_simple_query(query_string="select 'hello world';") at postgres.c:1121
    frame #27: postgres`PostgresMain(argc=<unavailable>, argv=<unavailable>, dbname=<unavailable>, username=<unavailable>) at postgres.c:0
    frame #28: postgres`PostmasterMain [inlined] BackendRun at postmaster.c:4412
    frame #29: postgres`PostmasterMain [inlined] BackendStartup at postmaster.c:4084
    frame #30: postgres`PostmasterMain at postmaster.c:1757
    frame #31: postgres`PostmasterMain(argc=<unavailable>, argv=0x0000000000000002) at postmaster.c:1365
    frame #32: postgres`main(argc=<unavailable>, argv=<unavailable>) at main.c:228
    frame #33: 0x000000000066baef postgres`_start + 383
(