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-rw-r--r--object.c26
1 files changed, 23 insertions, 3 deletions
diff --git a/object.c b/object.c
index 10b5349461..243d694a58 100644
--- a/object.c
+++ b/object.c
@@ -260,11 +260,18 @@ void add_object_array(struct object *obj, const char *name, struct object_array
add_object_array_with_mode(obj, name, array, S_IFINVALID);
}
+/*
+ * A zero-length string to which object_array_entry::name can be
+ * initialized without requiring a malloc/free.
+ */
+static char object_array_slopbuf[1];
+
void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode)
{
unsigned nr = array->nr;
unsigned alloc = array->alloc;
struct object_array_entry *objects = array->objects;
+ struct object_array_entry *entry;
if (nr >= alloc) {
alloc = (alloc + 32) * 2;
@@ -272,9 +279,16 @@ void add_object_array_with_mode(struct object *obj, const char *name, struct obj
array->alloc = alloc;
array->objects = objects;
}
- objects[nr].item = obj;
- objects[nr].name = name;
- objects[nr].mode = mode;
+ entry = &objects[nr];
+ entry->item = obj;
+ if (!name)
+ entry->name = NULL;
+ else if (!*name)
+ /* Use our own empty string instead of allocating one: */
+ entry->name = object_array_slopbuf;
+ else
+ entry->name = xstrdup(name);
+ entry->mode = mode;
array->nr = ++nr;
}
@@ -289,6 +303,9 @@ void object_array_filter(struct object_array *array,
if (src != dst)
objects[dst] = objects[src];
dst++;
+ } else {
+ if (objects[src].name != object_array_slopbuf)
+ free(objects[src].name);
}
}
array->nr = dst;
@@ -319,6 +336,9 @@ void object_array_remove_duplicates(struct object_array *array)
if (src != array->nr)
objects[array->nr] = objects[src];
array->nr++;
+ } else {
+ if (objects[src].name != object_array_slopbuf)
+ free(objects[src].name);
}
}
}