From 23dee69f53cf5024ca79e0b707dcb03c63f33bef Mon Sep 17 00:00:00 2001 From: Eric Wong Date: Sun, 6 Oct 2019 23:30:41 +0000 Subject: OFFSETOF_VAR macro to simplify hashmap iterators While we cannot rely on a `__typeof__' operator being portable to use with `offsetof'; we can calculate the pointer offset using an existing pointer and the address of a member using pointer arithmetic for compilers without `__typeof__'. This allows us to simplify usage of hashmap iterator macros by not having to specify a type when a pointer of that type is already given. In the future, list iterator macros (e.g. list_for_each_entry) may also be implemented using OFFSETOF_VAR to save hackers the trouble of using container_of/list_entry macros and without relying on non-portable `__typeof__'. v3: use `__typeof__' to avoid clang warnings Signed-off-by: Eric Wong Reviewed-by: Derrick Stolee Signed-off-by: Junio C Hamano --- attr.c | 1 - 1 file changed, 1 deletion(-) (limited to 'attr.c') diff --git a/attr.c b/attr.c index ca8be46e8e..9849106627 100644 --- a/attr.c +++ b/attr.c @@ -168,7 +168,6 @@ static void all_attrs_init(struct attr_hashmap *map, struct attr_check *check) check->all_attrs_nr = size; hashmap_for_each_entry(&map->map, &iter, e, - struct attr_hash_entry, ent /* member name */) { const struct git_attr *a = e->value; check->all_attrs[a->attr_nr].attr = a; -- cgit v1.3