import java.io.IOException; 

public class Repro { 

  /** 
   * Compiles on JDK 8, 9 and 10 but fails to compile on JDK 11: 
   * 
   * unreported exception java.lang.Exception; must be caught or declared to be thrown 
   */ 
  void repro() throws IOException { 
    when(f(any())); 

    // The below code compiles on JDK 11. Perhaps when() wrapping the call to f(any()) breaks type inference? 
    // var v = f(any()); 
    // when(v); 
  } 

  interface G<T, E extends Exception> { } 

  <T, E extends Exception> T f(G<T, E> g) throws IOException, E { 
    return null; 
  } 

  static <T> T any() { 
    return null; 
  } 

  static <T> void when(T methodCall) { 
  } 
}