Christian Tismer's "trashcan" patch:
Added wrapping macros to dictobject.c, listobject.c, tupleobject.c,
frameobject.c, traceback.c that safely prevends core dumps
on stack overflow. Macros and functions in object.c, object.h.
The method is an "elevator destructor" that turns cascading
deletes into tail recursive behavior when some limit is hit.
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index dcd760c..4c716cd 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -103,6 +103,7 @@
int i;
PyObject **fastlocals;
+ Py_TRASHCAN_SAFE_BEGIN(f)
/* Kill all local variables */
fastlocals = f->f_localsplus;
for (i = f->f_nlocals; --i >= 0; ++fastlocals) {
@@ -120,6 +121,7 @@
Py_XDECREF(f->f_exc_traceback);
f->f_back = free_list;
free_list = f;
+ Py_TRASHCAN_SAFE_END(f)
}
PyTypeObject PyFrame_Type = {