diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 3109c755614..90f0c4ff200 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2003-05-03  Kazu Hirata  <kazu@cs.umass.edu>
+
+	* gcc.dg/m-un-2.c: Fix the typedef of size_t.
+
 2003-05-03  Kriang Lerdsuwanakij  <lerdsuwa@users.sourceforge.net>
 
 	PR c++/9364, c++/10553, c++/10586
diff --git a/gcc/testsuite/gcc.dg/m-un-2.c b/gcc/testsuite/gcc.dg/m-un-2.c
index e31646b6f20..bb617369163 100644
--- a/gcc/testsuite/gcc.dg/m-un-2.c
+++ b/gcc/testsuite/gcc.dg/m-un-2.c
@@ -1,7 +1,7 @@
 /* { dg-do compile } */
 /* { dg-options "-W -Wall" } */
 
-typedef unsigned long size_t;
+typedef __SIZE_TYPE__ size_t;
 extern void* malloc (size_t);
 extern void free (void*);
 extern void* realloc (void*, size_t);