optimised builtin methods are not assignable as bound methods

[scoder]

Unbound methods work, however, assigning an optimised bound method fails during type analysis:

cdef set s = {0,1,2}
clear = s.clear    # fails here
clear()

The error message is

Cannot convert 'int (set) except -1' to Python object

which indicates that the method was mapped to a C function which Cython then cannot assign to a (Python) variable anymore.

[scoder]

Fixed here:

 http://hg.cython.org/cython-devel/rev/55f7bcd6a372