I just tried this:
Python 2.1b1 (#15, Mar 16 2001, 04:31:43)
[GCC egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)] on linux2
Type "copyright", "credits" or "license" for more information.
>>> from __future__ import nested_scopes
>>> def f(x):
... x = x + 1
... a = x + 3
... b = x + 5
... def g(y):
... def h(z):
... return a, b, x, y, z
... return h
... return g
...
Fatal Python error: non-string found in code slot
Aborted (core dumped)
gdb says v is NULL:
#5 0x8059cce in PyCode_New (argcount=1, nlocals=2, stacksize=5, flags=3, code=0x8144688, consts=0x8145c1c, names=0x8122974, varnames=0x8145c6c, freevars=0x80ecc14, cellvars=0x81225d4, filename=0x812f900, name=0x810c288, firstlineno=5, lnotab=0x8144af0) at Python/compile.c:279
279 intern_strings(freevars);
(gdb) down
#4 0x8059b80 in intern_strings (tuple=0x80ecc14) at Python/compile.c:233
233 Py_FatalError("non-string found in code slot");
(gdb) list 230
225 static int
226 intern_strings(PyObject *tuple)
227 {
228 int i;
229
230 for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
231 PyObject *v = PyTuple_GET_ITEM(tuple, i);
232 if (v == NULL || !PyString_Check(v)) {
233 Py_FatalError("non-string found in code slot");
234 PyErr_BadInternalCall();
(gdb) print v
$1 = (PyObject *) 0x0
Hope this helps (this test should probably be added to test_scope.py too),
-- ?!ng
Happiness comes more from loving than being loved; and often when our
affection seems wounded it is is only our vanity bleeding. To love, and
to be hurt often, and to love again--this is the brave and happy life.
-- J. E. Buchrose
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