1 /*

     2  * @test /nodynamiccopyright/

     3  * @bug 8067883

     4  * @summary Javac misses some opportunities for diagnostic simplification

     5  *

     6  * @compile/fail/ref=T8067883a.out -Xdiags:compact -XDrawDiagnostics T8067883.java

     7  * @compile/fail/ref=T8067883b.out -Xdiags:verbose -XDrawDiagnostics T8067883.java

     8  *

     9  */

    10 

    11 import java.util.List;

    12 

    13 class T8067883 {

    14     void testMethod(List<Integer> li) {

    15         m(null, li);

    16         m(1, li);

    17     }

    18 

    19     void testDiamond(List<Integer> li) {

    20         new Box<>(null, li);

    21         new Box<>(1, li);

    22     }

    23 

    24     <Z> void m(List<Z> z, List<String> ls) { }

    25 

    26     static class Box<X> {

    27         Box(List<X> z, List<String> ls) { }

    28     }

    29 }