8168774: Polymorhic signature method check crashes javac
Summary: Check for polysig method assumes arity is greater than zero
Reviewed-by: vromero
SynthName2.java:33:9: compiler.err.synthetic.name.conflict: val$zzz, InnClass
SynthName2.java:34:17: compiler.err.synthetic.name.conflict: val$prm1, InnClass
SynthName2.java:35:17: compiler.err.synthetic.name.conflict: val$zzz, InnClass
3 errors