// Copyright: (C) 2009 Gilles Muller, Julia Lawall, INRIA, DIKU.  GPLv2.

@@
expression E,E1;
identifier f,fld,fld1;
statement S1,S2;
@@

E->fld = f(...);
... when != E = E1
    when != E->fld1 = E1
if (
-   E
+   E->fld
           == NULL) S1 else S2