A simplified version of the semantic match that finds this problem is
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r1@
statement S;
position p,p1;
@@
S@p1;@p

@script:python r2@
p << r1.p;
p1 << r1.p1;
@@
if p[0].line != p1[0].line_end:
    cocci.include_match(False)
@@
position r1.p;
@@
-;@p
// </smpl>

Change-Id: Ib9708d37fbb4c6060f88d5dae3814a2d37b2091e
Reviewed-on: https://gerrit.libreoffice.org/9493Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>