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bpo-43588: fix codeobject.c static variables under building under building Python with --with-experimental-isolated-subinterpreters may cause crash. #24968

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bpo-43588: fix codeobject.c static variables under building under building Python with --with-experimental-isolated-subinterpreters may cause crash. #24968

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24 changes: 14 additions & 10 deletions Objects/codeobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -331,21 +331,22 @@ _PyCode_InitOpcache(PyCodeObject *co)
PyCodeObject *
PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
{
static PyObject *emptystring = NULL;
static PyObject *nulltuple = NULL;
PyObject *filename_ob = NULL;
PyObject *funcname_ob = NULL;
PyCodeObject *result = NULL;
if (emptystring == NULL) {
emptystring = PyBytes_FromString("");
if (emptystring == NULL)
goto failed;

PyObject *emptystring = PyBytes_FromString("");
if (emptystring == NULL)
{
goto failed;
}
if (nulltuple == NULL) {
nulltuple = PyTuple_New(0);
if (nulltuple == NULL)
goto failed;

PyObject *nulltuple = PyTuple_New(0);
if (nulltuple == NULL)
{
goto failed;
}

funcname_ob = PyUnicode_FromString(funcname);
if (funcname_ob == NULL)
goto failed;
Expand Down Expand Up @@ -375,6 +376,9 @@ PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
failed:
Py_XDECREF(funcname_ob);
Py_XDECREF(filename_ob);
Py_XDECREF(emptystring);
Py_XDECREF(nulltuple);

return result;
}

Expand Down