func test5986(t *testing.T) {
	C.output5986()
}

// issue 6128

func test6128() {
	// nothing to run, just make sure this compiles.
	_ = C.X
}

// issue 6390

func test6390(t *testing.T) {
	p1 := C.malloc(1024)
	if p1 == nil {
		t.Fatalf("C.malloc(1024) returned nil")
	}
	p2 := C.malloc(0)
	if p2 == nil {
		t.Fatalf("C.malloc(0) returned nil")
	}
	C.free(p1)