* dwarf2read.c (dwarf2_read_index): Don't use index if symbol table

is empty.

gdb/ChangeLog

@@ -1,3 +1,8 @@
+2012-04-27  Doug Evans  <dje@google.com>
+
+	* dwarf2read.c (dwarf2_read_index): Don't use index if symbol table
+	is empty.
+
 2012-04-27  Sergio Durigan Junior  <sergiodj@redhat.com>
 	    Tom Tromey  <tromey@redhat.com>
 

gdb/dwarf2read.c

@@ -2192,6 +2192,10 @@ dwarf2_read_index (struct objfile *objfile)
 
   map->constant_pool = addr + MAYBE_SWAP (metadata[i]);
 
+  /* Don't use the index if it's empty.  */
+  if (map->symbol_table_slots == 0)
+    return 0;
+
   if (!create_cus_from_index (objfile, cu_list, cu_list_elements))
     return 0;