diff --git a/gold/ChangeLog b/gold/ChangeLog
index e9b79d4b462..f668eadcc58 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,8 @@
+2010-04-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* testsuite/plugin_common_test_1.c (foo): Add prototype.
+	* testsuite/plugin_common_test_2.c (foo): Likewise.
+
 2010-04-08  Doug Kwan  <dougkwan@google.com>
 
 	* merge.cc (Output_merge_data::set_final_data_size): Handle empty
diff --git a/gold/testsuite/plugin_common_test_1.c b/gold/testsuite/plugin_common_test_1.c
index cf9ca2f78ee..262c298597d 100644
--- a/gold/testsuite/plugin_common_test_1.c
+++ b/gold/testsuite/plugin_common_test_1.c
@@ -32,6 +32,8 @@ extern int c3;
 int c4;
 int c5 = 50;
 
+extern void foo (void);
+
 int
 main (int argc __attribute__ ((unused)), char** argv __attribute__ ((unused)))
 {
diff --git a/gold/testsuite/plugin_common_test_2.c b/gold/testsuite/plugin_common_test_2.c
index 149fd456d80..54139ceb9c5 100644
--- a/gold/testsuite/plugin_common_test_2.c
+++ b/gold/testsuite/plugin_common_test_2.c
@@ -32,8 +32,10 @@ int c3;
 int c4 = 40;
 int c5;
 
+extern void foo (void);
+
 void
-foo ()
+foo (void)
 {
   c1 = 10;
   c2 = 20;