add_excludes_from_file: clarify the bom skipping logic

diff --git a/alloc.c b/alloc.c
index 03e458bad02329927fffa12180122253c4671fc8..12afadfacdd6094912a6e18a217a9aa6318b47b2 100644 (file)
--- a/alloc.c
+++ b/alloc.c
@@ -52,6 +52,7 @@ static struct alloc_state blob_state;
 void *alloc_blob_node(void)
 {
        struct blob *b = alloc_node(&blob_state, sizeof(struct blob));
+       b->object.type = OBJ_BLOB;
        return b;
 }
 
@@ -59,6 +60,7 @@ static struct alloc_state tree_state;
 void *alloc_tree_node(void)
 {
        struct tree *t = alloc_node(&tree_state, sizeof(struct tree));
+       t->object.type = OBJ_TREE;
        return t;
 }
 
@@ -66,6 +68,7 @@ static struct alloc_state tag_state;
 void *alloc_tag_node(void)
 {
        struct tag *t = alloc_node(&tag_state, sizeof(struct tag));
+       t->object.type = OBJ_TAG;
        return t;
 }
 
@@ -73,16 +76,23 @@ static struct alloc_state object_state;
 void *alloc_object_node(void)
 {
        struct object *obj = alloc_node(&object_state, sizeof(union any_object));
+       obj->type = OBJ_NONE;
        return obj;
 }
 
 static struct alloc_state commit_state;
 
+unsigned int alloc_commit_index(void)
+{
+       static unsigned int count;
+       return count++;
+}
+
 void *alloc_commit_node(void)
 {
-       static int commit_count;
        struct commit *c = alloc_node(&commit_state, sizeof(struct commit));
-       c->index = commit_count++;
+       c->object.type = OBJ_COMMIT;
+       c->index = alloc_commit_index();
        return c;
 }