The test files in javax/swing/text/html/parser/Parser/8078268/ are empty:

jdk8u> ls -l jdk/test/javax/swing/text/html/parser/Parser/8078268/
total 0
-rw-r--r-- 1 <user> None 0 Apr 14 15:01 bug8078268.java
-rw-r--r-- 1 <user> None 0 Jan 18 21:49 slowparse.html