Re: [PATCH][2/n] Drop DW_AT_name for LTO produced unit DIEs

[Richard Biener]

On Wed, 11 Feb 2015, Richard Biener wrote:

> 
> Testing in progress.
> 
> Ok?

So it was said that retaining something like <artificial> is better.
Thus the following.

LTO bootstrapped & tested on x86_64-unknown-linux-gnu - ok?

Thanks,
Richard.

2015-02-11  Richard Biener  <rguent...@suse.de>

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

Index: gcc/dwarf2out.c
===================================================================
--- gcc/dwarf2out.c     (revision 220613)
+++ gcc/dwarf2out.c     (working copy)
@@ -24521,8 +24521,13 @@ 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)