expr::clone() should not ZORBA_ASSERT, but only raise an error.
expr::clone() should not ZORBA_ASSERT, but only raise an error.

cezarfx/zorba,28msec/zorba,28msec/zorba,bgarrels/zorba,bgarrels/zorba,bgarrels/zorba,bgarrels/zorba,28msec/zorba,cezarfx/zorba,cezarfx/zorba,28msec/zorba,cezarfx/zorba,28msec/zorba,cezarfx/zorba,cezarfx/zorba,28msec/zorba,cezarfx/zorba,bgarrels/zorba,cezarfx/zorba,28msec/zorba,28msec/zorba,cezarfx/zorba,bgarrels/zorba,28msec/zorba,bgarrels/zorba,bgarrels/zorba,cezarfx/zorba