Omitting the ending '}' in a type statement causes a StackOverflowError

To reproduce: in the mdsal project, go to mdsal/model/ietf/ietf-restconf and do mvn clean. Open src/main/yang/ietf-restconf@2013-10-19.yang. On line 114, remove the ending '}:

typedef revision-identifier {
type string {
pattern '\d

-\d

';
} <--- line 114

description ...
}

In your terminal window, set the scrollback size to like 5000 (1000 lines wasn't enough for me). Run mvn. If your window has enough scrollback you should see the StackOverflowError.