New submission from Connor W Fitzgerald <connorwadefitzger...@gmail.com>:
This is my first time submitting a bug report, so forgive me if I miss on important information. I am writing code that makes heavy use of sets (8GB+ of them). It segfaults semi-randomly during the processing of them. I've used versions 3.5.3, 3.6.3, and 3.7.0rc2. I debugged the process and came across the error in object/setobject.c:742. I don't really know what information to provide here but this is the best I can do. Error: Unhandled exception thrown: read access violation. entry->**key** was 0x8000. Stack Trace: python37.dll!set_traverse(PySetObject * so, int(*)(_object *, void *) visit, void * arg) Line 742 python37.dll!subtract_refs(_gc_head * containers) Line 295 python37.dll!collect(int generation, __int64 * n_collected, __int64 * n_uncollectable, int nofail) Line 862 python37.dll!collect_with_callback(int generation) Line 1027 python37.dll!collect_generations() Line 1049 python37.dll!PyType_GenericAlloc(_typeobject * type, __int64 nitems) Line 969 [Inline Frame] python37.dll!make_new_set(_typeobject *) Line 1055 python37.dll!set_new(_typeobject * type, _object * args, _object * kwds) Line 1127 python37.dll!type_call(_typeobject * type, _object * args, _object * kwds) Line 928 python37.dll!_PyObject_FastCallKeywords(_object * callable, _object * * stack, __int64 nargs, _object * kwnames) Line 199 python37.dll!call_function(_object * * * pp_stack, __int64 oparg, _object * kwnames) Line 4705 python37.dll!_PyEval_EvalFrameDefault(_frame * f, int throwflag) Line 3182 [Inline Frame] python37.dll!PyEval_EvalFrameEx(_frame *) Line 549 python37.dll!_PyEval_EvalCodeWithName(_object * _co, _object * globals, _object * locals, _object * * args, __int64 argcount, _object * * kwnames, _object * * kwargs, __int64 kwcount, int kwstep, _object * * defs, __int64 defcount, _object * kwdefs, _object * closure, _object * name, _object * qualname) Line 4011 python37.dll!_PyFunction_FastCallDict(_object * func, _object * * args, __int64 nargs, _object * kwargs) Line 376 [Inline Frame] python37.dll!PyEval_CallObjectWithKeywords(_object *) Line 819 python37.dll!defdict_missing(defdictobject * dd, _object * key) Line 1993 python37.dll!_PyMethodDef_RawFastCallDict(PyMethodDef * method, _object * self, _object * * args, __int64 nargs, _object * kwargs) Line 496 [Inline Frame] python37.dll!_PyCFunction_FastCallDict(_object *) Line 580 python37.dll!_PyObject_FastCallDict(_object * callable, _object * * args, __int64 nargs, _object * kwargs) Line 101 [Inline Frame] python37.dll!object_vacall(_object * callable, char *) Line 1194 python37.dll!PyObject_CallFunctionObjArgs(_object * callable, ...) Line 1259 python37.dll!dict_subscript(PyDictObject * mp, _object * key) Line 1984 python37.dll!_PyEval_EvalFrameDefault(_frame * f, int throwflag) Line 1316 [Inline Frame] python37.dll!PyEval_EvalFrameEx(_frame *) Line 549 python37.dll!_PyEval_EvalCodeWithName(_object * _co, _object * globals, _object * locals, _object * * args, __int64 argcount, _object * * kwnames, _object * * kwargs, __int64 kwcount, int kwstep, _object * * defs, __int64 defcount, _object * kwdefs, _object * closure, _object * name, _object * qualname) Line 4011 [Inline Frame] python37.dll!_PyFunction_FastCallKeywords(_object * stack, _object * *) Line 433 python37.dll!call_function(_object * * * pp_stack, __int64 oparg, _object * kwnames) Line 4703 python37.dll!_PyEval_EvalFrameDefault(_frame * f, int throwflag) Line 3182 [Inline Frame] python37.dll!PyEval_EvalFrameEx(_frame *) Line 549 python37.dll!_PyEval_EvalCodeWithName(_object * _co, _object * globals, _object * locals, _object * * args, __int64 argcount, _object * * kwnames, _object * * kwargs, __int64 kwcount, int kwstep, _object * * defs, __int64 defcount, _object * kwdefs, _object * closure, _object * name, _object * qualname) Line 4011 python37.dll!PyEval_EvalCodeEx(_object * _co, _object * globals, _object * locals, _object * * args, int argcount, _object * * kws, int kwcount, _object * * defs, int defcount, _object * kwdefs, _object * closure) Line 4045 python37.dll!PyEval_EvalCode(_object * co, _object * globals, _object * locals) Line 532 python37.dll!run_mod(_mod * mod, _object * filename, _object * globals, _object * locals, PyCompilerFlags * flags, _arena * arena) Line 987 python37.dll!PyRun_FileExFlags(_iobuf * fp, const char * filename_str, int start, _object * globals, _object * locals, int closeit, PyCompilerFlags * flags) Line 939 python37.dll!PyRun_SimpleFileExFlags(_iobuf * fp, const char * filename, int closeit, PyCompilerFlags * flags) Line 402 python37.dll!PyRun_AnyFileExFlags(_iobuf * fp, const char * filename, int closeit, PyCompilerFlags * flags) Line 84 python37.dll!run_file(_iobuf * fp, const wchar_t * filename, PyCompilerFlags * p_cf) Line 340 python37.dll!Py_Main(int argc, wchar_t * * argv) Line 894 [Inline Frame] python.exe!invoke_main() Line 79 python.exe!__scrt_common_main_seh() Line 253 kernel32.dll!0000000077a959cd() ntdll.dll!0000000077bca561() I'm not sure what I can do to reproduce this because I don't even know what line of code my program was running before it segfaulted. I'm using sqlite3, json, and pickle as my main extensions. Nothing outside of what is provided in the standard library is used. If you need any more information, I'll gladly provide it. ---------- components: Interpreter Core messages: 307539 nosy: connorwfitzgerald priority: normal severity: normal status: open title: Crash in set_traverse Within the Garbage Collector's collect_generations() type: crash versions: Python 3.5, Python 3.6, Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue32209> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
