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test/langtools/tools/javac/lambda/MostSpecific08.java
41 строка
1 KB
Guoxiong Li
8258525: Some existing tests should use /nodynamiccopyright/ instead of the standard header
30 дек 2020, 20:20
30 дек 2020, 20:20
8435f0d
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/* * @test /nodynamiccopyright/ * @bug 8008813 * @summary Structural most specific fails when method reference is passed to overloaded method * @compile/fail/ref=MostSpecific08.out -XDrawDiagnostics MostSpecific08.java */ class MostSpecific08 { static class C { int getInt() { return -1; } Integer getInteger() { return -1; } } interface IntResult { } interface ReferenceResult<X> { } interface PrimitiveFunction { int f(C c); } interface ReferenceFunction<X> { X f(C c); } interface Tester { IntResult apply(PrimitiveFunction p); <Z> ReferenceResult<Z> apply(ReferenceFunction<Z> p); } void testMref(Tester t) { IntResult pr = t.apply(C::getInt); //ok - unoverloaded mref ReferenceResult<Integer> rr = t.apply(C::getInteger); //ok - unoverloaded mref } void testLambda(Tester t) { IntResult pr1 = t.apply(c->c.getInt()); //ambiguous - implicit IntResult pr2 = t.apply((C c)->c.getInt()); //ok ReferenceResult<Integer> rr1 = t.apply(c->c.getInteger()); //ambiguous - implicit ReferenceResult<Integer> rr2 = t.apply((C c)->c.getInteger()); //ok } }