Author: Julia Lawall <julia@diku.dk> dst_state_alloc returns an ERR_PTR value in an error case instead of NULL. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @match exists@ expression x, E; statement S1, S2; @@ x = dst_state_alloc(…) … when != x = E ( * if (x == …
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