8168774: Polymorhic signature method check crashes javac
Summary: Check for polysig method assumes arity is greater than zero
Reviewed-by: vromero
/*
* @test /nodynamiccopyright/
* @bug 4720356
* @summary compiler fails to check cross-package overriding
* @author gafter
*
* @compile/fail/ref=T4720356a.out -XDrawDiagnostics T4720356a.java T4720356b.java
*/
package p1;
public class T4720356a {
void m() {}
}
class T4720356c extends p2.T4720356b {
// conflicting return type, even though a.m() not inherited
public int m() { return 1; }
}