Testcase fix, update error message

Cython/Compiler/ExprNodes.py

@@ -3939,7 +3939,7 @@ class TypecastNode(NewTempExprNode):
             if self.type.from_py_function:
                 self.operand = self.operand.coerce_to(self.type, env)
             elif self.type.is_ptr and not (self.type.base_type.is_void or self.type.base_type.is_struct):
-                error(self.pos, "Python objects can only be cast to void*")
+                error(self.pos, "Python objects cannot be casted to pointers of primitive types")
             else:
                 warning(self.pos, "No conversion from %s to %s, python object pointer used." % (self.type, self.operand.type))
         elif from_py and to_py:

tests/errors/e_tempcast.pyx

 cdef object blarg
 
 def foo(obj):
-	cdef int *p
-	p = <int *>blarg # okay
-	p = <int *>(foo + blarg) # error - temporary
+	cdef void *p
+	p = <void *>blarg # ok
+	p = <void *>(obj + blarg) # error - temporary
+	
 _ERRORS = u"""
 6:5: Casting temporary Python object to non-numeric non-Python type
 """

tests/errors/pyobjcastdisallow_T313.pyx

@@ -5,5 +5,5 @@ cdef void* allowed = <void*>a
 cdef double* disallowed = <double*>a
 
 _ERRORS = u"""
-5:26: Python objects can only be cast to void*
+5:26: Python objects cannot be casted to pointers of primitive types
 """