PR c++/41611

[pf3gnuchains/gcc-fork.git] / gcc / cp / decl2.c

diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c
index 53f66ad..faa3c9d 100644 (file)
--- a/gcc/cp/decl2.c
+++ b/gcc/cp/decl2.c
@@ -789,7 +789,7 @@ grokfield (const cp_declarator *declarator,
 
   if (TREE_CODE (value) == TYPE_DECL && init)
     {
-      error ("typedef %qD is initialized (use __typeof__ instead)", value);
+      error ("typedef %qD is initialized (use decltype instead)", value);
       init = NULL_TREE;
     }
 
@@ -1313,6 +1313,7 @@ build_anon_union_vars (tree type, tree object)
          decl = build_decl (input_location,
                             VAR_DECL, DECL_NAME (field), TREE_TYPE (field));
          DECL_ANON_UNION_VAR_P (decl) = 1;
+         DECL_ARTIFICIAL (decl) = 1;
 
          base = get_base_address (object);
          TREE_PUBLIC (decl) = TREE_PUBLIC (base);
@@ -1573,8 +1574,7 @@ comdat_linkage (tree decl)
        }
     }
 
-  if (DECL_LANG_SPECIFIC (decl))
-    DECL_COMDAT (decl) = 1;
+  DECL_COMDAT (decl) = 1;
 }
 
 /* For win32 we also want to put explicit instantiations in
@@ -1883,6 +1883,8 @@ constrain_visibility (tree decl, int visibility)
       if (!DECL_EXTERN_C_P (decl))
        {
          TREE_PUBLIC (decl) = 0;
+         DECL_WEAK (decl) = 0;
+         DECL_COMMON (decl) = 0;
          DECL_COMDAT_GROUP (decl) = NULL_TREE;
          DECL_INTERFACE_KNOWN (decl) = 1;
          if (DECL_LANG_SPECIFIC (decl))
@@ -2552,7 +2554,9 @@ get_guard (tree decl)
       TREE_PUBLIC (guard) = TREE_PUBLIC (decl);
       TREE_STATIC (guard) = TREE_STATIC (decl);
       DECL_COMMON (guard) = DECL_COMMON (decl);
-      DECL_COMDAT_GROUP (guard) = DECL_COMDAT_GROUP (decl);
+      DECL_COMDAT (guard) = DECL_COMDAT (decl);
+      if (DECL_ONE_ONLY (decl))
+       make_decl_one_only (guard, cxx_comdat_group (guard));
       if (TREE_PUBLIC (decl))
        DECL_WEAK (guard) = DECL_WEAK (decl);
       DECL_VISIBILITY (guard) = DECL_VISIBILITY (decl);
@@ -3655,7 +3659,19 @@ cp_write_global_declarations (void)
          if (DECL_NOT_REALLY_EXTERN (decl)
              && DECL_INITIAL (decl)
              && decl_needed_p (decl))
-           DECL_EXTERNAL (decl) = 0;
+           {
+             struct cgraph_node *node = cgraph_get_node (decl), *alias;
+
+             DECL_EXTERNAL (decl) = 0;
+             /* If we mark !DECL_EXTERNAL one of the same body aliases,
+                we need to mark all of them that way.  */
+             if (node && node->same_body)
+               {
+                 DECL_EXTERNAL (node->decl) = 0;
+                 for (alias = node->same_body; alias; alias = alias->next)
+                   DECL_EXTERNAL (alias->decl) = 0;
+               }
+           }
 
          /* If we're going to need to write this function out, and
             there's already a body for it, create RTL for it now.