tree.c (build_string): Do not waste tail padding in struct tree_string.

2006-06-26  Richard Guenther  <rguenther@suse.de>

	* tree.c (build_string): Do not waste tail padding in
	struct tree_string.

From-SVN: r115021

gcc/ChangeLog

 2006-06-26  Richard Guenther  <rguenther@suse.de>
 
+	* tree.c (build_string): Do not waste tail padding in
+	struct tree_string.
+
+2006-06-26  Richard Guenther  <rguenther@suse.de>
+
 	* ggc-page.c (init_ggc): Add missing element to size_lookup
 	table.
 

gcc/tree.c

@@ -1120,8 +1120,9 @@ build_string (int len, const char *str)
 {
   tree s;
   size_t length;
-  
-  length = len + sizeof (struct tree_string);
+
+  /* Do not waste bytes provided by padding of struct tree_string.  */
+  length = len + offsetof (struct tree_string, str) + 1;
 
 #ifdef GATHER_STATISTICS
   tree_node_counts[(int) c_kind]++;