diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 52a26bc9d4c7..3e3481e42695 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -15,6 +15,7 @@
 	* g++.old-deja/g++.pt/enum6.C: Likewise.
 	* g++.old-deja/g++.other/anon9.C: Likewise.
 	* g++.old-deja/g++.other/linkage1.C: Likewise.
+	* c-c++-common/dfp/pr35620.c: Give the union a name.
 
 2009-11-02  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
 
diff --git a/gcc/testsuite/c-c++-common/dfp/pr35620.c b/gcc/testsuite/c-c++-common/dfp/pr35620.c
index 37a9c4044ed5..2d56ab76b844 100644
--- a/gcc/testsuite/c-c++-common/dfp/pr35620.c
+++ b/gcc/testsuite/c-c++-common/dfp/pr35620.c
@@ -9,7 +9,7 @@ extern void foo (_Decimal32);
 _Decimal32 *p;
 
 extern int i;
-union { _Decimal32 a; int b; } u;
+union U { _Decimal32 a; int b; } u;
 
 void
 blatz (void)