Fix crash when check_input=True

theano/tensor/opt.py

@@ -782,22 +782,24 @@ class MakeVector(T.Op):
         # So there will be (1 * nb_dtype) + ((nb len(inp) - 1 ))
         # different c code with the following algo
         out_shape = len(inp)
-        out_dtype = numpy.dtype(node.outputs[0].dtype).num
+        out_num = numpy.dtype(node.outputs[0].dtype).num
+        # don't use dtype_%(out)s as when check_input=False, it isn't defined.
+        out_dtype = node.outputs[0].type.dtype_specs()[1]
         if len(inp) > 0:
             assert self.dtype == node.inputs[0].dtype
-            out_dtype = 'PyArray_TYPE(%s)' % inp[0]
+            out_num = 'PyArray_TYPE(%s)' % inp[0]
 
         ret = """
         npy_intp dims[1];
         dims[0] = %(out_shape)s;
         if(!%(out)s || PyArray_DIMS(%(out)s)[0] != %(out_shape)s){
             Py_XDECREF(%(out)s);
-            %(out)s = (PyArrayObject*)PyArray_EMPTY(1, dims, %(out_dtype)s, 0);
+            %(out)s = (PyArrayObject*)PyArray_EMPTY(1, dims, %(out_num)s, 0);
         }
         """ % locals()
         for idx, i in enumerate(inp):
             ret += """
-            *((dtype_%(out)s *)PyArray_GETPTR1(%(out)s, %(idx)s)) = *((dtype_%(out)s *) PyArray_DATA(%(i)s));
+            *((%(out_dtype)s *)PyArray_GETPTR1(%(out)s, %(idx)s)) = *((%(out_dtype)s *) PyArray_DATA(%(i)s));
             """ % locals()
         return ret