Merge pull request #1773 from nouiz/make_vector_bug

theano/tensor/opt.py

@@ -587,7 +587,7 @@ class MakeVector(T.Op):
             out[0][...] = inputs
 
     def c_code_cache_version(self):
-        return (1,)
+        return (2,)
 
     def c_code(self, node, name, inp, out_, sub):
         out, = out_
@@ -604,7 +604,7 @@ class MakeVector(T.Op):
         ret = """
         npy_intp dims[1];
         dims[0] = %(out_shape)s;
-        if(!%(out)s || PyArray_DIMS(%(out)s)[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);
         }