Wrong virtual method override called.

[vgvassilev]

class A {
public:
  virtual float vm(float x, float y) {
    return x + y;
  }
};
class B : public A {
public:
  float vm(float x, float y) override {
    return x*x + y*y;
  }
};
int main() {
  auto vm_darg0_A = clad::differentiate(&A::vm, 0);
  printf("Result is = %f\n", vm_darg0_A.execute(a, 2, 3)); // CHECK-EXEC: Result is = 1.0000
  auto vm_darg0_B = clad::differentiate(&B::vm, 0);
  printf("Result is = %f\n", vm_darg0_B.execute(b, 2, 3)); // CHECK-EXEC: Result is = 4.0000
}

For some reason vm_darg0_A.execute(a, 2, 3) calls the B::vm. If the execute()-s get swapped it works as expected.