1 /**

     2  * @test /nodynamiccopyright/

     3  * @bug 7086601

     4  * @summary Error message bug: cause for method mismatch is 'null'

     5  * @compile/fail/ref=T7086601a.out -XDrawDiagnostics T7086601a.java

     6  */

     7 

     8 class T7086601 {

     9     static <S> void m1(Iterable<? super S> s1, Iterable<? super S> s2) { }

    10     static void m1(Object o) {}

    11 

    12     static <S> void m2(Iterable<? super S> s1, Iterable<? super S> s2, Iterable<? super S> s3) { }

    13     static void m2(Object o) {}

    14 

    15     @SafeVarargs

    16     static <S> void m3(Iterable<? super S>... ss) { }

    17     static void m3(Object o) {}

    18 

    19     static void test1(Iterable<String> is, Iterable<Integer> ii) {

    20         m1(is, ii);

    21     }

    22 

    23     static void test2(Iterable<String> is, Iterable<Integer> ii, Iterable<Double> id) {

    24         m2(is, ii, id);

    25     }

    26 

    27     static void test3(Iterable<String> is, Iterable<Integer> ii) {

    28         m3(is, ii);

    29     }

    30 

    31     static void test4(Iterable<String> is, Iterable<Integer> ii, Iterable<Double> id) {

    32         m3(is, ii, id);

    33     }

    34 }