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In PyFrame_New(), don't set extras to something derived from code

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before code has been checked for validity.  Discovered by Vladimir
Marangozov.
This commit is contained in:
Guido van Rossum 1998-09-25 14:11:46 +00:00
parent d35c255e44
commit 67906af811
1 changed files with 2 additions and 1 deletions
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3
Objects/frameobject.c
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@ -150,7 +150,7 @@ PyFrame_New(tstate, code, globals, locals)
static PyObject *builtin_object; static PyObject *builtin_object;
PyFrameObject *f; PyFrameObject *f;
PyObject *builtins; PyObject *builtins;
int extras = code->co_stacksize + code->co_nlocals; int extras;
if (builtin_object == NULL) { if (builtin_object == NULL) {
builtin_object = PyString_InternFromString("__builtins__"); builtin_object = PyString_InternFromString("__builtins__");
@ -164,6 +164,7 @@ PyFrame_New(tstate, code, globals, locals)
PyErr_BadInternalCall(); PyErr_BadInternalCall();
return NULL; return NULL;
} }
extras = code->co_stacksize + code->co_nlocals;
if (back == NULL || back->f_globals != globals) { if (back == NULL || back->f_globals != globals) {
builtins = PyDict_GetItem(globals, builtin_object); builtins = PyDict_GetItem(globals, builtin_object);
if (builtins != NULL && PyModule_Check(builtins)) if (builtins != NULL && PyModule_Check(builtins))