This change, 8149773: StandardDocFileFactory should be converted to use java.nio.file.Path, results in 16 failures on both windows platforms.
These tests,
com/sun/javadoc/JavascriptWinTitle/JavascriptWinTitle.java
com/sun/javadoc/testClassCrossReferences/TestClassCrossReferences.java
com/sun/javadoc/testDocRootInlineTag/TestDocRootInlineTag.java
com/sun/javadoc/testExternalOverridenMethod/TestExternalOverridenMethod.java
com/sun/javadoc/testHref/TestHref.java
com/sun/javadoc/testLinkOption/TestLinkOption.java
com/sun/javadoc/testLinkOption/TestNewLineInLink.java
com/sun/javadoc/testTitleInHref/TestTitleInHref.java
jdk/javadoc/doclet/JavascriptWinTitle/JavascriptWinTitle.java
jdk/javadoc/doclet/testClassCrossReferences/TestClassCrossReferences.java
jdk/javadoc/doclet/testDocRootInlineTag/TestDocRootInlineTag.java
jdk/javadoc/doclet/testExternalOverridenMethod/TestExternalOverridenMethod.java
jdk/javadoc/doclet/testHref/TestHref.java
jdk/javadoc/doclet/testLinkOption/TestLinkOption.java
jdk/javadoc/doclet/testLinkOption/TestNewLineInLink.java
jdk/javadoc/doclet/testTitleInHref/TestTitleInHref.java

all fail with errors similar to

java.nio.file.NoSuchFileException: out\\overview-summary.html
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:520)
at JavadocTester.runTests(JavadocTester.java:248)
at JavascriptWinTitle.main(JavascriptWinTitle.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:520)
at com.sun.javatest.regtest.agent.MainActionHelper$SameVMRunnable.run(MainActionHelper.java:218)
at java.lang.Thread.run(Thread.java:804)
Caused by: java.lang.Error: Error reading file: overview-summary.html
at JavadocTester.readFile(JavadocTester.java:595)
at JavadocTester.checkOutput(JavadocTester.java:382)
at JavascriptWinTitle.test(JavascriptWinTitle.java:53)
... 12 more