Author: Julia Lawall <julia@diku.dk> Go to existing error handling code at the end of the function that calls clk_put. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @r exists@ expression e1,e2; statement S; @@ e1 = clk_get@p1(…); … when != e1 = e2 when != clk_put(e1) when …