Void function calls with literal arguments crash Clad in forward mode

[gojakuch]

#include "clad/Differentiator/Differentiator.h"
#include <iostream>

void some_important_void_func(double y) {
}

double f(double x) {
  some_important_void_func(0);
  return x;
}

int main() {
  auto df = clad::differentiate(f, 0);
  df.dump();
  std::cout << "f(3)=" << f(3.0) << "; df(3)=" << df.execute(3.0) << std::endl;
  return 0;
}