• file
• revisions
• annotate
• diff
• comparison
• raw

test/tools/javac/lambda/MethodReference64.java@c09b7234cded (annotated)

test/tools/javac/lambda/MethodReference64.java

Tue, 14 May 2013 11:11:09 -0700

author

rfield

date

Tue, 14 May 2013 11:11:09 -0700

changeset 1752

c09b7234cded

parent 0

959103a6100f

permissions

-rw-r--r--

8012556: Implement lambda methods on interfaces as static
8006140: Javac NPE compiling Lambda expression on initialization expression of static field in interface
Summary: Lambdas occurring in static contexts or those not needing instance information should be generated into static methods. This has long been the case for classes. However, as a work-around to the lack of support for statics on interfaces, interface lambda methods have been generated into default methods. For lambdas in interface static contexts (fields and static methods) this causes an NPE in javac because there is no 'this'. MethodHandles now support static methods on interfaces. This changeset allows lambda methods to be generated as static interface methods. An existing bug in Hotspot (8013875) is exposed in a test when the "-esa" flag is used. This test and another test that already exposed this bug have been marked with @ignore.
Reviewed-by: mcimadamore

aoqi@0	1	/*
aoqi@0	2	* @test /nodynamiccopyright/
aoqi@0	3	* @bug 8008540 8008539 8008538
aoqi@0	4	* @summary Constructor reference to non-reifiable array should be rejected
aoqi@0	5	* @compile/fail/ref=MethodReference64.out -XDrawDiagnostics MethodReference64.java
aoqi@0	6	*/
aoqi@0	7	class MethodReference64 {
aoqi@0	8	interface ClassFactory {
aoqi@0	9	Object m();
aoqi@0	10	}
aoqi@0	11
aoqi@0	12	interface ArrayFactory {
aoqi@0	13	Object m(int i);
aoqi@0	14	}
aoqi@0	15
aoqi@0	16	@interface Anno { }
aoqi@0	17
aoqi@0	18	enum E { }
aoqi@0	19
aoqi@0	20	interface I { }
aoqi@0	21
aoqi@0	22	static class Foo<X> { }
aoqi@0	23
aoqi@0	24	void m(ClassFactory cf) { }
aoqi@0	25	void m(ArrayFactory cf) { }
aoqi@0	26
aoqi@0	27	void testAssign() {
aoqi@0	28	ClassFactory c1 = Anno::new; //error
aoqi@0	29	ClassFactory c2 = E::new; //error
aoqi@0	30	ClassFactory c3 = I::new; //error
aoqi@0	31	ClassFactory c4 = Foo<?>::new; //error
aoqi@0	32	ClassFactory c5 = 1::new; //error
aoqi@0	33	ArrayFactory a1 = Foo<?>[]::new; //ok
aoqi@0	34	ArrayFactory a2 = Foo<? extends String>[]::new; //error
aoqi@0	35	}
aoqi@0	36
aoqi@0	37	void testMethod() {
aoqi@0	38	m(Anno::new); //error
aoqi@0	39	m(E::new); //error
aoqi@0	40	m(I::new); //error
aoqi@0	41	m(Foo<?>::new); //error
aoqi@0	42	m(1::new); //error
aoqi@0	43	m(Foo<?>[]::new); //ok - resolves to m(ArrayFactory)
aoqi@0	44	m(Foo<? extends String>[]::new); //error
aoqi@0	45	}
aoqi@0	46	}