8168774: Polymorhic signature method check crashes javac
Summary: Check for polysig method assumes arity is greater than zero
Reviewed-by: vromero
/*
* @test /nodynamiccopyright/
* @bug 6794959
* @summary add new switch -XDexpectKeys=key,key,...
* @compile T6794959.java
* @compile/fail/ref=T6794959a.out -XDrawDiagnostics -XDfailcomplete=java.lang.String T6794959.java
* @compile -XDfailcomplete=java.lang.String -XDexpectKeys=compiler.err.cant.resolve.location T6794959.java
* @compile/fail/ref=T6794959b.out -XDrawDiagnostics -XDexpectKeys=compiler.err.cant.resolve.location T6794959.java
*/
class T6794959 {
String s;
}