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Fix for SF bug [ #492403 ] exec() segfaults on closure's func_code

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Based on the patch from Danny Yoo.  The fix is in exec_statement() in
ceval.c.

There are also changes to introduce use of PyCode_GetNumFree() in
several places.
This commit is contained in:
Jeremy Hylton 2001-12-13 19:51:56 +00:00
parent 3095a4c228
commit 733c8935f9
3 changed files with 10 additions and 5 deletions
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7
Python/ceval.c
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@ -2094,7 +2094,7 @@ eval_frame(PyFrameObject *f)
int nfree;
v = POP(); /* code object */
x = PyFunction_New(v, f->f_globals);
nfree = PyTuple_GET_SIZE(((PyCodeObject *)v)->co_freevars);
nfree = PyCode_GetNumFree((PyCodeObject *)v);
Py_DECREF(v);
/* XXX Maybe this should be a separate opcode? */
if (x != NULL && nfree > 0) {
@ -3631,6 +3631,11 @@ exec_statement(PyFrameObject *f, PyObject *prog, PyObject *globals,
if (PyDict_GetItemString(globals, "__builtins__") == NULL)
PyDict_SetItemString(globals, "__builtins__", f->f_builtins);
if (PyCode_Check(prog)) {
if (PyCode_GetNumFree((PyCodeObject *)prog) > 0) {
PyErr_SetString(PyExc_TypeError,
"code object passed to exec may not contain free variables");
return -1;
}
v = PyEval_EvalCode((PyCodeObject *) prog, globals, locals);
}
else if (PyFile_Check(prog)) {