X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fattributes.h;h=6da0b0ef9cd71b362b45122bd93c1d8300e17620;hb=bc5c6c1953ada1737620e27e6a968392a38d8c8f;hp=b0712fcc8f4a8ab6f5f5d2ec1a9662b80fe4ea5c;hpb=3dd0f6ae0d5eb73a2270a243e443c4ae03c2c16e;p=pspp

diff --git a/src/data/attributes.h b/src/data/attributes.h
index b0712fcc8f..6da0b0ef9c 100644
--- a/src/data/attributes.h
+++ b/src/data/attributes.h
@@ -45,6 +45,7 @@ struct attrset
   {
     struct hmap map;
   };
+#define ATTRSET_INITIALIZER(ATTRSET) { .map = HMAP_INITIALIZER((ATTRSET).map) }
 
 void attrset_init (struct attrset *);
 void attrset_clone (struct attrset *, const struct attrset *);
@@ -53,6 +54,7 @@ void attrset_destroy (struct attrset *);
 size_t attrset_count (const struct attrset *);
 
 struct attribute *attrset_lookup (const struct attrset *, const char *);
+bool attrset_try_add (struct attrset *, struct attribute *);
 void attrset_add (struct attrset *, struct attribute *);
 void attrset_delete (struct attrset *, const char *);
 void attrset_clear (struct attrset *);