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Wrote down the invariants of some common objects whose structure is

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exposed in header files.  Fixed a few comments in these headers.

As we might have expected, writing down invariants systematically exposed a
(minor) bug.  In this case, function objects have a writeable func_code
attribute, which could be set to code objects with the wrong number of
free variables.  Calling the resulting function segfaulted the interpreter.
Added a corresponding test.
This commit is contained in:
Armin Rigo 2004-10-28 16:32:00 +00:00
parent 063e1e846d
commit 89a39461bf
12 changed files with 98 additions and 25 deletions
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4
Include/sliceobject.h
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@ -16,12 +16,12 @@ PyAPI_DATA(PyObject) _Py_EllipsisObject; /* Don't use this directly */
A slice object containing start, stop, and step data members (the
names are from range). After much talk with Guido, it was decided to
let these be any arbitrary python type.
let these be any arbitrary python type. Py_None stands for omitted values.
*/
typedef struct {
PyObject_HEAD
PyObject *start, *stop, *step;
PyObject *start, *stop, *step; /* not NULL */
} PySliceObject;
PyAPI_DATA(PyTypeObject) PySlice_Type;