2 files changed, 23 insertions, 4 deletions
diff --git a/avahi-common/strlst.c b/avahi-common/strlst.c
index d4d67da..46ed852 100644
--- a/avahi-common/strlst.c
+++ b/avahi-common/strlst.c
@@ -28,14 +28,25 @@
 
 #include "strlst.h"
 
+AvahiStringList*avahi_string_list_add_anonymous(AvahiStringList *l, guint size) {
+    AvahiStringList *n;
+
+    n = g_malloc(sizeof(AvahiStringList) + size);
+    n->next = l;
+    n->size = size;
+    
+    return n;
+}
+
 AvahiStringList *avahi_string_list_add_arbitrary(AvahiStringList *l, const guint8*text, guint size) {
     AvahiStringList *n;
 
     g_assert(text);
 
-    n = g_malloc(sizeof(AvahiStringList) + size);
-    n->next = l;
-    memcpy(n->text, text, n->size = size);
+    n = avahi_string_list_add_anonymous(l, size);
+
+    if (size > 0)
+        memcpy(n->text, text, size);
     
     return n;
 }
diff --git a/avahi-common/strlst.h b/avahi-common/strlst.h
index 99a9d2a..a4a4202 100644
--- a/avahi-common/strlst.h
+++ b/avahi-common/strlst.h
@@ -62,10 +62,17 @@ void avahi_string_list_free(AvahiStringList *l);
  * start. */
 AvahiStringList *avahi_string_list_add(AvahiStringList *l, const gchar *text);
 
-/** Append am arbitrary length byte string to the list. Returns the
+/** Append an arbitrary length byte string to the list. Returns the
  * new list start. */
 AvahiStringList *avahi_string_list_add_arbitrary(AvahiStringList *l, const guint8 *text, guint size);
 
+/** Append a new entry to the string list. The string is not filled
+with data. The caller should fill in string data afterwards by writing
+it to l->text, where l is the pointer returned by this function. This
+function exists solely to optimize a few operations where otherwise
+superfluous string copying would be necessary. */
+AvahiStringList*avahi_string_list_add_anonymous(AvahiStringList *l, guint size);
+
 /** Same as avahi_string_list_add(), but takes a variable number of
  * NUL terminated strings. The argument list must be terminated by a
  * NULL pointer. Returns the new list start. */
@@ -99,6 +106,7 @@ AvahiStringList* avahi_string_list_reverse(AvahiStringList *l);
 /** Return the number of elements in the string list */
 guint avahi_string_list_length(const AvahiStringList *l);
 
+
 AVAHI_C_DECL_END
 
 #endif