re PR bootstrap/53042 (AIX bootstrap: cgraph symbol table error)

	PR target/53042
	* decl2.c (maybe_emit_vtables): Do not initialize same_comdat_group
	list when target has no support for it.

From-SVN: r186627

gcc/cp/ChangeLog

+2012-04-20  Jan Hubicka  <jh@suse.cz>
+
+	PR target/53042
+	* decl2.c (maybe_emit_vtables): Do not initialize same_comdat_group
+	list when target has no support for it.
+
 2012-04-20  Michael Matz  <matz@suse.de>
 
 	* error.c (pedwarn_cxx98): Move va_end call after user

gcc/cp/decl2.c

@@ -1894,7 +1894,7 @@ maybe_emit_vtables (tree ctype)
 	 actually marking the variable as written.  */
       if (flag_syntax_only)
 	TREE_ASM_WRITTEN (vtbl) = 1;
-      else if (DECL_COMDAT (vtbl))
+      else if (DECL_ONE_ONLY (vtbl))
 	{
 	  current = varpool_node (vtbl);
 	  if (last)