René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`dict_traverse` crash during PGO training on Windows with JIT enabled","articleBody":"# Bug report\n\n### Bug description:\n\nBuilding CPython at e779777c66 with `PCbuild/build.bat -c Release --pgo --experimental-jit` can crash during the PGO training phase. The instrumented interpreter hits an access violation in dict_traverse → visit_decref → _PyObject_IS_GC with ob = 0xffffffffffffffff (-1). The last successful build was at 2f7634c0291c (the prior night's run; I suspect this has to do with #144757).\n\nI caught this as part of the nightly run for the JIT benchmark website (see https://github.com/savannahostrowski/pyperf_bench/actions/runs/22133822860/job/64045676082) on my Windows runner (x86_64, Windows 11). Reproduces under a Windows service account (NETWORK SERVICE); appears to be timing-dependent.\n\n\n\u003cdetails\u003e\n0:000\u003e !analyze -v\n*******************************************************************************\n*                                                                             *\n*                        Exception Analysis                                   *\n*                                                                             *\n*******************************************************************************\n\n\nKEY_VALUES_STRING: 1\n\n    Key  : AV.Type\n    Value: Read\n\n    Key  : Analysis.CPU.mSec\n    Value: 375\n\n    Key  : Analysis.Elapsed.mSec\n    Value: 577\n\n    Key  : Analysis.IO.Other.Mb\n    Value: 0\n\n    Key  : Analysis.IO.Read.Mb\n    Value: 20\n\n    Key  : Analysis.IO.Write.Mb\n    Value: 56\n\n    Key  : Analysis.Init.CPU.mSec\n    Value: 1718\n\n    Key  : Analysis.Init.Elapsed.mSec\n    Value: 36703\n\n    Key  : Analysis.Memory.CommitPeak.Mb\n    Value: 111\n\n    Key  : Analysis.Version.DbgEng\n    Value: 10.0.29507.1001\n\n    Key  : Analysis.Version.Description\n    Value: 10.2511.5.1 amd64fre\n\n    Key  : Analysis.Version.Ext\n    Value: 1.2511.5.1\n\n    Key  : Failure.Bucket\n    Value: INVALID_POINTER_READ_c0000005_python315.dll!_PyObject_IS_GC\n\n    Key  : Failure.Exception.Code\n    Value: 0xc0000005\n\n    Key  : Failure.Exception.IP.Address\n    Value: 0x7ffc5f3395a0\n\n    Key  : Failure.Exception.IP.Module\n    Value: python315\n\n    Key  : Failure.Exception.IP.Offset\n    Value: 0x395a0\n\n    Key  : Failure.Hash\n    Value: {41ad561c-4f71-20b0-5dcb-a02ca0bc2c99}\n\n    Key  : Failure.ProblemClass.Primary\n    Value: INVALID_POINTER_READ\n\n    Key  : Faulting.IP.Type\n    Value: Paged\n\n    Key  : Timeline.OS.Boot.DeltaSec\n    Value: 405382\n\n    Key  : Timeline.Process.Start.DeltaSec\n    Value: 3\n\n    Key  : WER.OS.Branch\n    Value: ge_release\n\n    Key  : WER.OS.Version\n    Value: 10.0.26100.1\n\n    Key  : WER.Process.Version\n    Value: 3.15.106.1013\n\n\nFILE_IN_CAB:  python.exe.3948.dmp\n\nNTGLOBALFLAG:  0\n\nAPPLICATION_VERIFIER_FLAGS:  0\n\nCONTEXT:  (.ecxr)\nrax=000001b2fdf20130 rbx=ffffffffffffffff rcx=ffffffffffffffff\nrdx=000001b2fdf08c00 rsi=0000000000000027 rdi=000001b2fdf08c00\nrip=00007ffc5f3395a0 rsp=0000000dd217c490 rbp=000001b2fdf08c00\n r8=00007ffc5fbd1a80  r9=ffffffffffffffff r10=00007ffcd2895980\nr11=00007ffcd2893870 r12=000001b2fa194d00 r13=00007ffc5fcb4c80\nr14=00007ffc5f79c9c0 r15=00007ffc5fce9db8\niopl=0         nv up ei pl nz na po nc\ncs=0033  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010206\npython315!_Py_TYPE_impl [inlined in python315!_PyObject_IS_GC+0x20]:\n00007ffc`5f3395a0 4c8b4108        mov     r8,qword ptr [rcx+8] ds:00000000`00000007=????????????????\nResetting default scope\n\nEXCEPTION_RECORD:  (.exr -1)\nExceptionAddress: 00007ffc5f3395a0 (python315!_Py_TYPE_impl)\n   ExceptionCode: c0000005 (Access violation)\n  ExceptionFlags: 00000000\nNumberParameters: 2\n   Parameter[0]: 0000000000000000\n   Parameter[1]: 0000000000000007\nAttempt to read from address 0000000000000007\n\nPROCESS_NAME:  python.exe\n\nREAD_ADDRESS:  0000000000000007 \n\nERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.\n\nEXCEPTION_CODE_STR:  c0000005\n\nEXCEPTION_PARAMETER1:  0000000000000000\n\nEXCEPTION_PARAMETER2:  0000000000000007\n\nSTACK_TEXT:  \n(Inline Function) --------`--------     : --------`-------- --------`-------- --------`-------- --------`-------- : python315!_Py_TYPE_impl\n0000000d`d217c490 00007ffc`5f79c9f5     : 00007ffc`5fc67980 00007ffc`5fbd1a80 000001b2`fdf08c00 ffffffff`ffffffff : python315!_PyObject_IS_GC+0x20\n0000000d`d217c4d0 00007ffc`5f683fcb     : 00000000`00000003 00000000`00000000 00000000`00000000 00000000`00000000 : python315!visit_decref+0x35\n0000000d`d217c500 00007ffc`5f36f42c     : 000001b2`fdf08bf0 0000000d`d217c708 0000000d`d217c6f8 0000000d`d217c6f8 : python315!dict_traverse+0xab\n0000000d`d217c570 00007ffc`5f389fd5     : 00000000`0000085f 0000000d`d217c648 0000000d`d217c788 0000000d`d217c708 : python315!subtract_refs+0x7c\n0000000d`d217c5c0 00007ffc`5f443b38     : 0000000d`d217c6f8 00007ffc`5fcb2fa0 00007ffc`5fce9db8 00000000`00000000 : python315!deduce_unreachable+0x65\n0000000d`d217c600 00007ffc`5f44de15     : 00007ffc`5fcb4c80 00007ffc`5fce9db8 00000000`00000000 00007ffc`5fcb4c80 : python315!gc_collect_region+0x78\n0000000d`d217c6c0 00007ffc`5f44f0e6     : 00000000`00000000 00000000`00000000 00007ffc`5fcb4c80 00000000`00000000 : python315!gc_collect_increment+0x285\n0000000d`d217c760 00007ffc`5f44fd6a     : 00000000`00000000 00007ffc`5fce9db8 00000000`00000000 000170b1`27ba8994 : python315!_PyGC_Collect+0x1a6\n0000000d`d217c7f0 00007ffc`5f4500c0     : 00000000`00000000 00000000`00000000 00000000`00000000 000001b2`f94b7c20 : python315!_Py_RunGC+0x4a\n0000000d`d217c830 00007ffc`5f45028e     : 000001b2`fe56ec51 000001b2`fe9d9100 000001b2`fdf20951 00000000`00000002 : python315!_Py_HandlePending+0x140\n0000000d`d217c870 00007ffc`5f766de9     : 000001b2`fe56ec51 000001b2`fdf0c7b0 00000000`00000008 00000000`00000000 : python315!check_periodics+0x3e\n0000000d`d217c8b0 00007ffc`5f4504e5     : 00000000`1ab78c8b 00000000`00000000 0000000d`d217cbf0 00000000`00000002 : python315!_PyEval_EvalFrameDefault+0x68cd\n0000000d`d217cb40 00007ffc`5f450891     : 0000000d`d217cbf0 000001b2`f94e9f90 00000000`00000000 0000000d`d217cd68 : python315!_PyEval_EvalFrame+0x35\n0000000d`d217cb80 00007ffc`5f673e28     : 00000000`00000000 00000000`00000000 00000000`00000000 00007ffc`5fce9db8 : python315!_PyEval_Vector+0x291\n0000000d`d217cc80 00007ffc`5f4ae45e     : 000001b2`fdeffcc0 00000000`00000002 00000000`00000000 00000000`00000000 : python315!_PyFunction_Vectorcall+0x88\n0000000d`d217ccc0 00007ffc`5f3ea92b     : 00000000`00000002 0000000d`d217ce30 00000000`00000000 0000000d`d217cd68 : python315!_PyObject_VectorcallTstate+0xbe\n0000000d`d217cd10 00007ffc`5f673cf9     : 000001b2`fde7bf40 00000000`00000000 00000000`00000000 00000000`00000000 : python315!object_vacall+0x1ab\n0000000d`d217cdd0 00007ffc`5f441d83     : 00000000`00000000 00007ffc`5fca7760 00007ffc`5fcaec48 000001b2`fdf20630 : python315!PyObject_CallMethodObjArgs+0x109\n0000000d`d217ce20 00007ffc`5f7a5ce4     : 00000000`00000000 00000000`00000000 00000000`00000000 00007ffc`5fc99478 : python315!import_find_and_load+0xf3\n0000000d`d217ceb0 00007ffc`5f4429dd     : 00007ffc`5fcb2fa0 000001b2`fe53e1c0 000001b2`fe53e1c0 00000000`1b11c0c7 : python315!PyImport_ImportModuleLevelObject+0x384\n0000000d`d217cf20 00007ffc`5f442b4d     : 00007ffc`5fcaec48 00000000`00000000 00000000`00000000 00000000`00000000 : python315!_PyEval_ImportNameWithImport+0xed\n0000000d`d217cfd0 00007ffc`5f448104     : 00007ffc`5fcaec48 00000000`00000000 00007ffc`5fce9db8 000001b2`fe53e1c0 : python315!_PyEval_ImportName+0xed\n0000000d`d217d030 00007ffc`5f763fc1     : 000001b2`fde7b640 00007ffc`5fce9db8 00007ffc`5fc99400 000001b2`fe451f90 : python315!_PyEval_LazyImportName+0x124\n0000000d`d217d120 00007ffc`5f4504e5     : 00000000`1b16c513 00000000`00000000 0000000d`d217d460 00000000`00000000 : python315!_PyEval_EvalFrameDefault+0x3aa5\n0000000d`d217d3b0 00007ffc`5f450891     : 0000000d`d217d460 000001b2`fe27f420 00000000`00000000 00000000`00000000 : python315!_PyEval_EvalFrame+0x35\n0000000d`d217d3f0 00007ffc`5f450a79     : 000001b2`fe0ef9b0 000001b2`fe53e1c0 000001b2`fe53e1c0 000001b2`fea71170 : python315!_PyEval_Vector+0x291\n0000000d`d217d4f0 00007ffc`5f7591a9     : 000001b2`fe53e1c0 00000000`00000000 000001b2`fe53e1c0 00000000`0000000f : python315!PyEval_EvalCode+0x199\n0000000d`d217d590 00007ffc`5f758dc0     : 00000000`00000000 00000000`00000000 000001b2`f95e0871 00007ffc`5f8b1946 : python315!builtin_exec_impl+0x3a9\n0000000d`d217d640 00007ffc`5f6b00f5     : 00000000`00000002 00000000`00000000 00000000`00000000 00000000`00000002 : python315!builtin_exec+0x150\n0000000d`d217d6f0 00007ffc`5f3e37c8     : 00007ffc`5f6b0030 000001b2`fdf20ae0 00000000`00000002 00007ffc`5f3681c1 : python315!cfunction_vectorcall_FASTCALL_KEYWORDS+0xc5\n0000000d`d217d730 00007ffc`5f495c61     : 000001b2`fdf20ae0 000001b2`fe9d94c0 000001b2`fdf20ae1 00000000`00000000 : python315!_PyVectorcall_Call+0x148\n0000000d`d217d790 00007ffc`5f496b6c     : 00000000`00000010 00000000`00000000 000001b2`fdf20ae1 00000000`00000002 : python315!_PyObject_Call+0x81\n0000000d`d217d7f0 00007ffc`5f766d33     : 000001b2`fea540c1 000001b2`fdf0c7b0 00000000`00000008 00000000`00000000 : python315!PyObject_Call+0x5c\n0000000d`d217d830 00007ffc`5f4504e5     : 00000000`1ab78c8b 000001b2`fe5700c0 0000000d`d217db70 00000000`00000002 : python315!_PyEval_EvalFrameDefault+0x6817\n0000000d`d217dac0 00007ffc`5f450891     : 0000000d`d217db70 000001b2`f94e9f90 00000000`00000000 0000000d`d217dce8 : python315!_PyEval_EvalFrame+0x35\n0000000d`d217db00 00007ffc`5f673e28     : 000001b2`fdf6f480 000001b2`fe5700c0 00000000`00000000 00007ffc`5fce9db8 : python315!_PyEval_Vector+0x291\n0000000d`d217dc00 00007ffc`5f4ae45e     : 000001b2`fdeffcc0 00000000`00000002 000001b2`fdf6f480 000001b2`fe5700c0 : python315!_PyFunction_Vectorcall+0x88\n0000000d`d217dc40 00007ffc`5f3ea92b     : 00000000`00000002 0000000d`d217ddb0 00000000`00000000 0000000d`d217dce8 : python315!_PyObject_VectorcallTstate+0xbe\n0000000d`d217dc90 00007ffc`5f673cf9     : 000001b2`fde7bf40 00000000`00000000 00000000`00000000 00000000`00000000 : python315!object_vacall+0x1ab\n0000000d`d217dd50 00007ffc`5f441d83     : 000001b2`fe5538b0 00007ffc`5fca7760 000001b2`fe0ef9b0 000001b2`fdf20630 : python315!PyObject_CallMethodObjArgs+0x109\n0000000d`d217dda0 00007ffc`5f7a5ce4     : 00000000`00000000 00000000`00000000 00000000`00000000 00007ffc`5fc99478 : python315!import_find_and_load+0xf3\n0000000d`d217de30 00007ffc`5f4429dd     : 00007ffc`5fcb2fa0 000001b2`fe1c5dc0 000001b2`fe1c5dc0 00000000`1b11c0c7 : python315!PyImport_ImportModuleLevelObject+0x384\n0000000d`d217dea0 00007ffc`5f442b4d     : 000001b2`fe0ef9b0 000001b2`fea70a90 000001b2`fe5538b0 000001b2`fea70bf0 : python315!_PyEval_ImportNameWithImport+0xed\n0000000d`d217df50 00007ffc`5f448104     : 000001b2`fe0ef9b0 00000000`00000000 00007ffc`5fce9db8 000001b2`fe1c5dc0 : python315!_PyEval_ImportName+0xed\n0000000d`d217dfb0 00007ffc`5f763fc1     : 000001b2`fde7b640 00007ffc`5fce9db8 00007ffc`5fc99400 000001b2`f951d670 : python315!_PyEval_LazyImportName+0x124\n0000000d`d217e0a0 00007ffc`5f4504e5     : 00000000`1b16c513 00000000`00000000 0000000d`d217e3e0 00000000`00000000 : python315!_PyEval_EvalFrameDefault+0x3aa5\n0000000d`d217e330 00007ffc`5f450891     : 0000000d`d217e3e0 000001b2`fe1dab40 00000000`00000000 00000000`00000000 : python315!_PyEval_EvalFrame+0x35\n0000000d`d217e370 00007ffc`5f450a79     : 000001b2`fe1c5470 000001b2`fe1c5dc0 000001b2`fe1c5dc0 000001b2`fe4d2770 : python315!_PyEval_Vector+0x291\n0000000d`d217e470 00007ffc`5f7591a9     : 000001b2`fe1c5dc0 00000000`00000000 000001b2`fe1c5dc0 00000000`0000000f : python315!PyEval_EvalCode+0x199\n0000000d`d217e510 00007ffc`5f758dc0     : 00000000`00000000 00000000`00000000 000001b2`f95e0871 00007ffc`5f8b1946 : python315!builtin_exec_impl+0x3a9\n0000000d`d217e5c0 00007ffc`5f6b00f5     : 00000000`00000002 00000000`00000000 00000000`00000000 00000000`00000002 : python315!builtin_exec+0x150\n0000000d`d217e670 00007ffc`5f3e37c8     : 00007ffc`5f6b0030 000001b2`fdf20ae0 00000000`00000002 00007ffc`5f3681c1 : python315!cfunction_vectorcall_FASTCALL_KEYWORDS+0xc5\n0000000d`d217e6b0 00007ffc`5f495c61     : 000001b2`fdf20ae0 000001b2`fe5330c0 000001b2`fdf20ae1 00000000`00000000 : python315!_PyVectorcall_Call+0x148\n0000000d`d217e710 00007ffc`5f496b6c     : 00000000`00000010 00000000`00000000 000001b2`fdf20ae1 00000000`00000002 : python315!_PyObject_Call+0x81\n0000000d`d217e770 00007ffc`5f766d33     : 000001b2`fe528201 000001b2`fdf0c7b0 00000000`00000008 00000000`00000000 : python315!PyObject_Call+0x5c\n0000000d`d217e7b0 00007ffc`5f4504e5     : 00000000`1ab78c8b 5f5f6e69`616d5f5f 0000000d`d217eaf0 00000000`00000002 : python315!_PyEval_EvalFrameDefault+0x6817\n0000000d`d217ea40 00007ffc`5f450891     : 0000000d`d217eaf0 000001b2`f94e9f90 00000000`00000000 0000000d`d217ec68 : python315!_PyEval_EvalFrame+0x35\n0000000d`d217ea80 00007ffc`5f673e28     : 5c5f5f65`68636163 5f5f6e69`616d5f5f 00000000`00000000 00007ffc`5fce9db8 : python315!_PyEval_Vector+0x291\n0000000d`d217eb80 00007ffc`5f4ae45e     : 000001b2`fdeffcc0 00000000`00000002 5c5f5f65`68636163 5f5f6e69`616d5f5f : python315!_PyFunction_Vectorcall+0x88\n0000000d`d217ebc0 00007ffc`5f3ea92b     : 00000000`00000002 0000000d`d217ed30 00000000`00000000 0000000d`d217ec68 : python315!_PyObject_VectorcallTstate+0xbe\n0000000d`d217ec10 00007ffc`5f673cf9     : 000001b2`fde7bf40 00000000`00000000 00000000`00000000 00000000`00000000 : python315!object_vacall+0x1ab\n0000000d`d217ecd0 00007ffc`5f441d83     : 00000000`00000000 00007ffc`5fca7760 000001b2`fe1c5470 000001b2`fdf20630 : python315!PyObject_CallMethodObjArgs+0x109\n0000000d`d217ed20 00007ffc`5f7a5ce4     : 00000000`00000000 00000000`00000000 00000000`00000000 00007ffc`5fc99478 : python315!import_find_and_load+0xf3\n0000000d`d217edb0 00007ffc`5f4429dd     : 00007ffc`5fcb2fa0 000001b2`fe15e840 000001b2`fe15e840 00000000`1b11c0c7 : python315!PyImport_ImportModuleLevelObject+0x384\n0000000d`d217ee20 00007ffc`5f442b4d     : 000001b2`fe1c5470 00000000`00000000 00000000`00000000 00000000`00000000 : python315!_PyEval_ImportNameWithImport+0xed\n0000000d`d217eed0 00007ffc`5f448104     : 000001b2`fe1c5470 00000000`00000000 00007ffc`5fce9db8 000001b2`fe15e840 : python315!_PyEval_ImportName+0xed\n0000000d`d217ef30 00007ffc`5f763fc1     : 000001b2`f9620228 000001b2`fdea86a0 0000000d`d217f130 00007ffc`5fce9db8 : python315!_PyEval_LazyImportName+0x124\n0000000d`d217f020 00007ffc`5f4504e5     : 00000000`1b16c513 5f5f6e69`616d5f5f 0000000d`d217f360 00000000`00000000 : python315!_PyEval_EvalFrameDefault+0x3aa5\n0000000d`d217f2b0 00007ffc`5f450891     : 0000000d`d217f360 000001b2`fe151730 00000000`00000000 00000000`00000000 : python315!_PyEval_EvalFrame+0x35\n0000000d`d217f2f0 00007ffc`5f450a79     : 00007ffc`5fca6408 000001b2`fe15e840 000001b2`fe15e840 000001b2`fe13b320 : python315!_PyEval_Vector+0x291\n0000000d`d217f3f0 00007ffc`5f7591a9     : 000001b2`fe15e840 00000000`00000000 000001b2`fe15e840 000001b2`fe113580 : python315!PyEval_EvalCode+0x199\n0000000d`d217f490 00007ffc`5f758dc0     : 00000000`00000000 00000000`00000000 000001b2`f95e0871 00007ffc`5f8b1946 : python315!builtin_exec_impl+0x3a9\n0000000d`d217f540 00007ffc`5f6b00f5     : 00000000`00000002 5f5f6e69`616d5f5f 00000000`00000000 80000000`00000002 : python315!builtin_exec+0x150\n0000000d`d217f5f0 00007ffc`5f4ae45e     : 000001b2`fdf20ae0 00007ffc`5fce9db8 0000000d`d217f738 5f5f6e69`616d5f5f : python315!cfunction_vectorcall_FASTCALL_KEYWORDS+0xc5\n0000000d`d217f630 00007ffc`5f3eaa96     : 00000000`00000005 000001b2`fdf20ae0 000001b2`f9620190 00000000`00000010 : python315!_PyObject_VectorcallTstate+0xbe\n0000000d`d217f680 00007ffc`5f3f136f     : 00000000`00000001 000001b2`fdf20ae0 00000000`00000000 00000000`00000000 : python315!PyObject_Vectorcall+0x56\n0000000d`d217f6d0 00007ffc`5f769b92     : 000001b2`fe15e841 000001b2`f9620180 00000000`0000000b 000001b2`fde9d3b4 : python315!_Py_VectorCallInstrumentation_StackRefSteal+0xef\n0000000d`d217f7f0 00007ffc`5f4504e5     : 00000000`1ab78c8b 000001b2`fe4d2350 0000000d`d217fb30 00000000`00000002 : python315!_PyEval_EvalFrameDefault+0x9676\n0000000d`d217fa80 00007ffc`5f450891     : 0000000d`d217fb30 000001b2`fe3af7f0 00000000`00000000 000001b2`fe1bba20 : python315!_PyEval_EvalFrame+0x35\n\nSTACK_COMMAND: ~0s; .ecxr ; kb\n\nIP_IN_PAGED_CODE: \npython315!_PyObject_IS_GC+20 [C:\\actions-runner\\_work\\pyperf_bench\\pyperf_bench\\cpython\\Include\\internal\\pycore_object.h @ 834]\n00007ffc`5f3395a0 4c8b4108        mov     r8,qword ptr [rcx+8]\n\nFAULTING_SOURCE_LINE:  C:\\actions-runner\\_work\\pyperf_bench\\pyperf_bench\\cpython\\Include\\internal\\pycore_object.h\n\nFAULTING_SOURCE_FILE:  C:\\actions-runner\\_work\\pyperf_bench\\pyperf_bench\\cpython\\Include\\internal\\pycore_object.h\n\nFAULTING_SOURCE_LINE_NUMBER:  834\n\nFAULTING_SOURCE_CODE:  \n   309: \n   310: static inline\n   311: PyTypeObject* _Py_TYPE_impl(PyObject *ob)\n   312: {\n\u003e  313:     return ob-\u003eob_type;\n   314: }\n   315: \n   316: // bpo-39573: The Py_SET_SIZE() function must be used to set an object size.\n   317: static inline Py_ssize_t\n   318: _Py_SIZE_impl(PyObject *ob)\n\n\nSYMBOL_NAME:  python315!_PyObject_IS_GC+20\n\nMODULE_NAME: python315\n\nIMAGE_NAME:  python315.dll\n\nFAILURE_BUCKET_ID:  INVALID_POINTER_READ_c0000005_python315.dll!_PyObject_IS_GC\n\nOS_VERSION:  10.0.26100.1\n\nBUILDLAB_STR:  ge_release\n\nOSPLATFORM_TYPE:  x64\n\nOSNAME:  Windows 10\n\nIMAGE_VERSION:  3.15.106.1013\n\nFAILURE_ID_HASH:  {41ad561c-4f71-20b0-5dcb-a02ca0bc2c99}\n\nFollowup:     MachineOwner\n---------\n\u003c/details\u003e\n\n\n### CPython versions tested on:\n\nCPython main branch\n\n### Operating systems tested on:\n\nWindows","author":{"url":"https://github.com/savannahostrowski","@type":"Person","name":"savannahostrowski"},"datePublished":"2026-02-18T18:42:37.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/144970/cpython/issues/144970"}