diff --git a/test/zerodivide.go b/test/zerodivide.go
index 224797fcd9d..5fe1eb00d38 100644
--- a/test/zerodivide.go
+++ b/test/zerodivide.go
@@ -46,6 +46,30 @@ var (
 	c128, d128, e128 complex128 = 0+0i, 0+0i, 1+1i
 )
 
+// Fool gccgo into thinking that these variables can change.
+func NotCalled() {
+	i++; j++; k++
+	i8++; j8++; k8++
+	i16++; j16++; k16++
+	i32++; j32++; k32++
+	i64++; j64++; k64++
+
+	u++; v++; w++
+	u8++; v8++; w8++
+	u16++; v16++; w16++
+	u32++; v32++; w32++
+	u64++; v64++; w64++
+	up++; vp++; wp++
+
+	f += 1; g += 1; h += 1
+	f32 += 1; g32 += 1; h32 += 1
+	f64 += 1; g64 += 1; h64 += 1
+
+	c += 1+1i; d += 1+1i; e += 1+1i
+	c64 += 1+1i; d64 += 1+1i; e64 += 1+1i
+	c128 += 1+1i; d128 += 1+1i; e128 += 1+1i
+}
+
 var tmp interface{}
 
 // We could assign to _ but the compiler optimizes it too easily.