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[3.6] bpo-33451: Close pyc files before calling PyEval_EvalCode() (GH-7884) #7889

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Merged
miss-islington merged 1 commit into from
Jun 24, 2018
Merged

[3.6] bpo-33451: Close pyc files before calling PyEval_EvalCode() (GH-7884) #7889

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bpo-33451: Close pyc files before calling PyEval_EvalCode() (GH-7884) 
Directly executed pyc files were being kept open longer than necessary.
(cherry picked from commit ea73775)

Co-authored-by: Zackery Spytz <zspytz@gmail.com>
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@ZackerySpytz @miss-islington
ZackerySpytz authored and miss-islington committed Jun 24, 2018
commit 3da1734e9e0f98b4af21b16724e680ff86822e4d
1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Core and Builtins/2018-06-23-15-32-02.bpo-33451.sWN-1l.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Close directly executed pyc files before calling ``PyEval_EvalCode()``.
15 changes: 9 additions & 6 deletions Python/pythonrun.c
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Expand Up @@ -408,7 +408,6 @@ PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit,
goto done;
}
v = run_pyc_file(pyc_fp, filename, d, d, flags);
fclose(pyc_fp);
} else {
/* When running from stdin, leave __main__.__loader__ alone */
if (strcmp(filename, "<stdin>") != 0 &&
Expand Down Expand Up @@ -1041,27 +1040,31 @@ run_pyc_file(FILE *fp, const char *filename, PyObject *globals,
if (!PyErr_Occurred())
PyErr_SetString(PyExc_RuntimeError,
"Bad magic number in .pyc file");
return NULL;
goto error;
}
/* Skip mtime and size */
(void) PyMarshal_ReadLongFromFile(fp);
(void) PyMarshal_ReadLongFromFile(fp);
if (PyErr_Occurred())
return NULL;

if (PyErr_Occurred()) {
goto error;
}
v = PyMarshal_ReadLastObjectFromFile(fp);
if (v == NULL || !PyCode_Check(v)) {
Py_XDECREF(v);
PyErr_SetString(PyExc_RuntimeError,
"Bad code object in .pyc file");
return NULL;
goto error;
}
fclose(fp);
co = (PyCodeObject *)v;
v = PyEval_EvalCode((PyObject*)co, globals, locals);
if (v && flags)
flags->cf_flags |= (co->co_flags & PyCF_MASK);
Py_DECREF(co);
return v;
error:
fclose(fp);
return NULL;
}

PyObject *
Expand Down