9cbae35238
If we encounter conditions that would have caused vsnprintf to return a negative value, then something pretty wild is going on. We choose to terminate the vm when this occurs. This fixes security bug 1745. Review URL: https://chromiumcodereview.appspot.com//10696165 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@9558 260f80e4-7a28-3924-810f-c04153c831b5