diff --git a/internal/shader/testdata/for4.expected.vs b/internal/shader/testdata/for4.expected.vs
index 1dfb5aee1..0d489c79b 100644
--- a/internal/shader/testdata/for4.expected.vs
+++ b/internal/shader/testdata/for4.expected.vs
@@ -8,6 +8,7 @@ void F0(in int l0, out int l1) {
 
 void F1(out int l0) {
 	int l1 = 0;
+	int l3 = 0;
 	l1 = 0;
 	for (int l2 = 0; l2 < 10; l2++) {
 		int l3 = 0;
@@ -16,6 +17,8 @@ void F1(out int l0) {
 		l4 = l3;
 		l1 = (l1) + (l4);
 	}
+	l3 = 0;
+	l1 = (l1) + (l3);
 	l0 = l1;
 	return;
 }
diff --git a/internal/shader/testdata/for4.go b/internal/shader/testdata/for4.go
index e5ae24670..cf2f6c2ad 100644
--- a/internal/shader/testdata/for4.go
+++ b/internal/shader/testdata/for4.go
@@ -10,5 +10,7 @@ func Foo() int {
 		x := Ident(i)
 		sum += x
 	}
+	y := 0
+	sum += y
 	return sum
 }