From 112fbe00a4e7fe23b7314485304df7a9b029fda6 Mon Sep 17 00:00:00 2001 From: Lukas Fleischer Date: Mon, 18 Apr 2011 01:18:03 +0200 Subject: llist.c: Nullify pointers after free()'ing. * Set all data members to "NULL" in llist_free_inner() after freeing them. Altough we normally shouldn't continue working with a list that already went through llist_free_inner(), this will protect against dangling pointer bugs in case anyone will ever come up with the idea of doing so. * Set list head to "NULL" in llist_free(), basically to put the list into an initialized state. Signed-off-by: Lukas Fleischer --- src/llist.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/llist.c b/src/llist.c index 021de82..e24f9fc 100644 --- a/src/llist.c +++ b/src/llist.c @@ -52,6 +52,8 @@ llist_free (llist_t *l) t = i->next; mem_free (i); } + + l->head = NULL; } void @@ -62,7 +64,10 @@ llist_free_inner (llist_t *l, llist_fn_free_t fn_free) for (i = l->head; i; i = i->next) { if (i->data) - fn_free(i->data); + { + fn_free(i->data); + i->data = NULL; + } } } -- cgit v1.2.3-70-g09d2