coccinelle: add a rule to make "type" code use FREE_AND_NULL()

avar · gitster · commit cf9f49ea4817 · 2017-06-16T12:41:54.000-07:00
Signed-off-by: Ævar Arnfjörð Bjarmason &lt;avarab@gmail.com&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/contrib/coccinelle/free.cocci b/contrib/coccinelle/free.cocci
@@ -9,3 +9,11 @@ expression E;
 @@
 - if (!E)
   free(E);
+
+@@
+type T;
+T *ptr;
+@@
+- free(ptr);
+- ptr = NULL;
++ FREE_AND_NULL(ptr);
