diff --git a/gold/ChangeLog b/gold/ChangeLog
index 87543b508e2..b6a7d844a25 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,11 @@
+2009-02-04  Duncan Sands  <baldrick@free.fr>
+
+	PR 9812
+	* reduced_debug_output.h
+	(Output_reduced_debug_abbrev_section::failed): Use format for
+	gold_warning.
+	(Output_reduced_debug_info_section::faild): Likewise.
+
 2009-01-31  Mikolaj Zalewski  <mikolajz@google.com>
 
 	* script.cc (Lazy_demangler): New class.
diff --git a/gold/reduced_debug_output.h b/gold/reduced_debug_output.h
index bd8da2237c2..d1682288c3b 100644
--- a/gold/reduced_debug_output.h
+++ b/gold/reduced_debug_output.h
@@ -64,7 +64,7 @@ class Output_reduced_debug_abbrev_section : public Output_section
   void
   failed(std::string reason)
   {
-    gold_warning(reason.c_str());
+    gold_warning("%s", reason.c_str());
     failed_ = true;
   }
 
@@ -110,7 +110,7 @@ class Output_reduced_debug_info_section : public Output_section
   void
   failed(std::string reason)
   {
-    gold_warning(reason.c_str());
+    gold_warning("%s", reason.c_str());
     this->failed_ = true;
   }