fixed plist_new when no obstack is given

[r8182]

diff --git a/ir/adt/plist.c b/ir/adt/plist.c
index 9c4261d..7016f57 100644 (file)
--- a/ir/adt/plist.c
+++ b/ir/adt/plist.c
@@ -39,7 +39,9 @@ static plist_element_t *allocate_element(plist_t* list) {
 plist_t* plist_new(void) {
        plist_t* list = xmalloc(sizeof(*list));
 
+       list->obst = xmalloc(sizeof(*list->obst));
        obstack_init(list->obst);
+
        list->foreign_obstack    = 0;
        list->first_element      = NULL;
        list->last_element       = NULL;
@@ -70,6 +72,7 @@ void plist_free(plist_t *list) {
 
        if (! list->foreign_obstack) {
                obstack_free(list->obst, NULL);
+               xfree(list->obst);
                xfree(list);
        }
 }