test/tools/javac/lambda/TargetType14.java

Tue, 12 Mar 2013 16:02:43 +0000

author
mcimadamore
date
Tue, 12 Mar 2013 16:02:43 +0000
changeset 1628
5ddecb91d843
parent 0
959103a6100f
permissions
-rw-r--r--

8009545: Graph inference: dependencies between inference variables should be set during incorporation
Summary: Move all transitivity checks into the incorporation round
Reviewed-by: jjg

aoqi@0 1 /*
aoqi@0 2 * @test /nodynamiccopyright/
aoqi@0 3 * @bug 8003280
aoqi@0 4 * @summary Add lambda tests
aoqi@0 5 * check that return type is inferred from target type when cyclic inference found
aoqi@0 6 * @author Maurizio Cimadamore
aoqi@0 7 * @compile/fail/ref=TargetType14.out -XDrawDiagnostics TargetType14.java
aoqi@0 8 */
aoqi@0 9
aoqi@0 10 class TargetType14 {
aoqi@0 11
aoqi@0 12 interface SAM<X> {
aoqi@0 13 X m(int i, int j);
aoqi@0 14 }
aoqi@0 15
aoqi@0 16 static void test() {
aoqi@0 17 SAM<Integer> s1 = (i, j) -> i + j;
aoqi@0 18 m((i, j) -> i + j);
aoqi@0 19 SAM<Integer> s2 = m2((i, j) -> i + j); //ok
aoqi@0 20 SAM<Integer> s3 = m2((i, j) -> "" + i + j); //no
aoqi@0 21 }
aoqi@0 22
aoqi@0 23 static void m(SAM<Integer> s) { }
aoqi@0 24 static <X> SAM<X> m2(SAM<X> s) { return null; }
aoqi@0 25 }

mercurial