Initialize the new "flags" integer when creating a list.

Src/linklist.c

@@ -41,6 +41,7 @@ newlinklist(void)
     list = (LinkList) zhalloc(sizeof *list);
     list->list.first = NULL;
     list->list.last = &list->node;
+    list->list.flags = 0;
     return list;
 }
 
@@ -53,6 +54,7 @@ znewlinklist(void)
     list = (LinkList) zalloc(sizeof *list);
     list->list.first = NULL;
     list->list.last = &list->node;
+    list->list.flags = 0;
     return list;
 }
 

Src/zsh.h

@@ -415,12 +415,14 @@ union linkroot {
     do { \
         (N).list.first = NULL; \
         (N).list.last = &(N).node; \
+        (N).list.flags = 0; \
     } while (0)
 #define local_list1(N) union linkroot N; struct linknode __n0
 #define init_list1(N,V0) \
     do { \
         (N).list.first = &__n0; \
         (N).list.last = &__n0; \
+        (N).list.flags = 0; \
         __n0.next = NULL; \
         __n0.prev = &(N).node; \
         __n0.dat = (void *) (V0); \