[bpt/coccinelle.git] / tests / cst_null.cocci

// test x != NULL <=> NULL != x iso, and x != NULL => x iso

@r@
expression x;
expression E1,E2;
statement S2;
@@

- x = kmalloc(E1,E2)
+ x = kzalloc(E1,E2)
  ...
  if (x!=NULL) {
    ...
-   memset(x,0,E1);
    ...
  } else S2
Commit	Line	Data
c3e37e97 C	1	// test x != NULL <=> NULL != x iso, and x != NULL => x iso
	2
	3	@r@
	4	expression x;
	5	expression E1,E2;
	6	statement S2;
	7	@@
	8
	9	- x = kmalloc(E1,E2)
	10	+ x = kzalloc(E1,E2)
	11	...
	12	if (x!=NULL) {
	13	...
	14	- memset(x,0,E1);
	15	...
	16	} else S2