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[3.12] gh-116404: Handle errors correctly in wait_helper in posixmodule (GH-116405) #116406

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merged 1 commit into from
Mar 6, 2024
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[3.12] gh-116404: Handle errors correctly in wait_helper in posixmodule (GH-116405) #116406

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55 changes: 29 additions & 26 deletions Modules/posixmodule.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9245,36 +9245,39 @@ wait_helper(PyObject *module, pid_t pid, int status, struct rusage *ru)
if (!result)
return NULL;

int pos = 0;

#ifndef doubletime
#define doubletime(TV) ((double)(TV).tv_sec + (TV).tv_usec * 0.000001)
#endif

PyStructSequence_SET_ITEM(result, 0,
PyFloat_FromDouble(doubletime(ru->ru_utime)));
PyStructSequence_SET_ITEM(result, 1,
PyFloat_FromDouble(doubletime(ru->ru_stime)));
#define SET_INT(result, index, value)\
PyStructSequence_SET_ITEM(result, index, PyLong_FromLong(value))
SET_INT(result, 2, ru->ru_maxrss);
SET_INT(result, 3, ru->ru_ixrss);
SET_INT(result, 4, ru->ru_idrss);
SET_INT(result, 5, ru->ru_isrss);
SET_INT(result, 6, ru->ru_minflt);
SET_INT(result, 7, ru->ru_majflt);
SET_INT(result, 8, ru->ru_nswap);
SET_INT(result, 9, ru->ru_inblock);
SET_INT(result, 10, ru->ru_oublock);
SET_INT(result, 11, ru->ru_msgsnd);
SET_INT(result, 12, ru->ru_msgrcv);
SET_INT(result, 13, ru->ru_nsignals);
SET_INT(result, 14, ru->ru_nvcsw);
SET_INT(result, 15, ru->ru_nivcsw);
#undef SET_INT

if (PyErr_Occurred()) {
Py_DECREF(result);
return NULL;
}
#define SET_RESULT(CALL) \
do { \
PyObject *item = (CALL); \
if (item == NULL) { \
Py_DECREF(result); \
return NULL; \
} \
PyStructSequence_SET_ITEM(result, pos++, item); \
} while(0)

SET_RESULT(PyFloat_FromDouble(doubletime(ru->ru_utime)));
SET_RESULT(PyFloat_FromDouble(doubletime(ru->ru_stime)));
SET_RESULT(PyLong_FromLong(ru->ru_maxrss));
SET_RESULT(PyLong_FromLong(ru->ru_ixrss));
SET_RESULT(PyLong_FromLong(ru->ru_idrss));
SET_RESULT(PyLong_FromLong(ru->ru_isrss));
SET_RESULT(PyLong_FromLong(ru->ru_minflt));
SET_RESULT(PyLong_FromLong(ru->ru_majflt));
SET_RESULT(PyLong_FromLong(ru->ru_nswap));
SET_RESULT(PyLong_FromLong(ru->ru_inblock));
SET_RESULT(PyLong_FromLong(ru->ru_oublock));
SET_RESULT(PyLong_FromLong(ru->ru_msgsnd));
SET_RESULT(PyLong_FromLong(ru->ru_msgrcv));
SET_RESULT(PyLong_FromLong(ru->ru_nsignals));
SET_RESULT(PyLong_FromLong(ru->ru_nvcsw));
SET_RESULT(PyLong_FromLong(ru->ru_nivcsw));
#undef SET_RESULT

return Py_BuildValue("NiN", PyLong_FromPid(pid), status, result);
}
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