X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gold%2Ferrors.cc;h=2b022e78840ecd0c8118e465b5625ca41db17d55;hb=06a6207a1ab458521656f293bb1ca8fd013d6f7c;hp=b79764bd1d8285308e7bef6468e929c3279b18ef;hpb=e6455dfbc2dae8cc91f64b4120e87e138970cf84;p=deliverable%2Fbinutils-gdb.git

diff --git a/gold/errors.cc b/gold/errors.cc
index b79764bd1d..2b022e7884 100644
--- a/gold/errors.cc
+++ b/gold/errors.cc
@@ -1,6 +1,6 @@
 // errors.cc -- handle errors for gold
 
-// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+// Copyright (C) 2006-2020 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -193,6 +193,14 @@ Errors::undefined_symbol(const Symbol* sym, const std::string& location)
     fprintf(stderr,
             _("%s: %s: undefined reference to '%s', version '%s'\n"),
 	    location.c_str(), zmsg, sym->demangled_name().c_str(), version);
+
+  if (sym->is_cxx_vtable())
+    gold_info(_("%s: the vtable symbol may be undefined because "
+		"the class is missing its key function"),
+	      program_name);
+  if (sym->is_placeholder())
+    gold_info(_("%s: the symbol should have been defined by a plugin"),
+	      program_name);
 }
 
 // Issue a debugging message.