re PR lto/65015 (LTO produces randomly ordered debug information)

2015-02-13  Richard Biener  <rguenther@suse.de>

	PR lto/65015
	* dwarf2out.c (dwarf2out_finish): Use <artificial> as DW_AT_name
	for LTO produced CUs.

From-SVN: r220678

gcc/ChangeLog

+2015-02-13  Richard Biener  <rguenther@suse.de>
+
+	PR lto/65015
+	* dwarf2out.c (dwarf2out_finish): Use <artificial> as DW_AT_name
+	for LTO produced CUs.
+
 2015-02-13  Bin Cheng  <bin.cheng@arm.com>
 
 	PR tree-optimization/64705

gcc/dwarf2out.c

@@ -24527,8 +24527,13 @@ dwarf2out_finish (const char *filename)
   gen_remaining_tmpl_value_param_die_attribute ();
 
   /* Add the name for the main input file now.  We delayed this from
-     dwarf2out_init to avoid complications with PCH.  */
-  add_name_attribute (comp_unit_die (), remap_debug_filename (filename));
+     dwarf2out_init to avoid complications with PCH.
+     For LTO produced units use a fixed artificial name to avoid
+     leaking tempfile names into the dwarf.  */
+  if (!in_lto_p)
+    add_name_attribute (comp_unit_die (), remap_debug_filename (filename));
+  else
+    add_name_attribute (comp_unit_die (), "<artificial>");
   if (!IS_ABSOLUTE_PATH (filename) || targetm.force_at_comp_dir)
     add_comp_dir_attribute (comp_unit_die ());
   else if (get_AT (comp_unit_die (), DW_AT_comp_dir) == NULL)