New submission from Connor W Fitzgerald :
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
