Hi, Please review the fix for bug 8235904 "Infinite loop when rendering huge lines": http://cr.openjdk.java.net/~ceisserer/8235904/webrev.01/
The issue was caused by integer overflow during clipping: While the original native code used int or long depending on the coordinate range, the java-port unconditionally always used ints - which led to the issue. The code was ported to java back then to avoid JNI overhead. A big thanks to Mario Torre for analyzing the issue in detail and bringing it to my attention. Thanks, Clemens