31 lines
1.0 KiB
Java
31 lines
1.0 KiB
Java
/*
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* @test /nodynamiccopyright/
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* @summary Negative regression test from odersky
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* @author odersky
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*
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* @compile/fail/ref=BadTest.out -XDrawDiagnostics BadTest.java
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*/
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class BadTest {
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static class Main {
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static <B> List<B> nil() { return new List<B>(); }
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static <A> List<A> cons(A x, List<A> xs) { return xs.prepend(x); }
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static <A> Cell<A> makeCell(A x) { return new Cell<A>(x); }
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static <A> A id(A x) { return x; }
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public static void main(String[] args) {
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List<Cell<String>> as = nil().prepend(makeCell(null));
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List<Cell<String>> bs = cons(makeCell(null), nil());
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List<String> xs = id(nil());
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List<String> ys = cons("abc", id(nil()));
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List<String> zs = id(nil()).prepend("abc");
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List<Cell<String>> us = id(nil()).prepend(makeCell(null));
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List<Cell<String>> vs = cons(makeCell(null), id(nil()));
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System.out.println(nil() instanceof List<String>);
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nil();
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}
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}
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}
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