http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57551
--- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
OK, C++ FE properly brings the decl local as part of constrain_visibility,
however later in pt.c it is made public again in
mark_decl_instantiated as explicit instantiation.
My wild try is the following:
Index: pt.c
===================================================================
--- pt.c (revision 199698)
+++ pt.c (working copy)
@@ -17402,6 +17402,13 @@ mark_decl_instantiated (tree result, int
if (TREE_ASM_WRITTEN (result))
return;
+ /* For anonymous namespace we don't need to do anything. */
+ if (decl_anon_ns_mem_p (result))
+ {
+ gcc_assert (!TREE_PUBLIC (result));
+ return;
+ }
+
if (TREE_CODE (result) != FUNCTION_DECL)
/* The TREE_PUBLIC flag for function declarations will have been
set correctly by tsubst. */
