list.c: (in function list_addh)
list.c:24:5: Variable e is kept in true branch, but not kept in continuation.
+ list.c:24:5: in true branch:
list.c:23:7: Storage e becomes kept
+ list.c:24:5: in continuation:
+ list.c:12:22: Storage e becomes only
list.c:25:2: Storage *(l->next) reachable from parameter contains 1 undefined
field: next
list.c: (in function list_addh2)