[Bug c/89539] [9.0 regression] gcc fails to build/bootstrap on MACOSX

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89539

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-02-28
                 CC|                            |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I have used the following patch

--- ../_clean/gcc/dwarf2out.c   2019-02-27 15:29:19.000000000 +0100
+++ gcc/dwarf2out.c     2019-02-28 01:44:53.000000000 +0100
@@ -11234,7 +11234,7 @@ output_skeleton_debug_sections (dw_die_r
 /* Output a comdat type unit DIE and its children.  */

 static void
-output_comdat_type_unit (comdat_type_node *node, bool early_lto_debug)
+output_comdat_type_unit (comdat_type_node *node, bool early_lto_debug
__attribute((unused)))
 {
   const char *secname;
   char *tmp;