--- jsr166/build.xml	2016/05/21 00:12:12	1.211
+++ jsr166/build.xml	2017/03/24 16:33:02	1.238
@@ -1,5 +1,6 @@
 <project name="jsr166" default="usage"
-  xmlns:if="ant:if" xmlns:unless="ant:unless">
+  xmlns:if="ant:if" xmlns:unless="ant:unless"
+  xmlns:ivy="antlib:org.apache.ivy.ant">
 
   <description>
 ------------------------------------------------------------------------------
@@ -17,24 +18,23 @@
   itself.  Because the JDK version matters and because different
   targets require different JDKs, we assume that users have created a
   hierarchy containing:
-  $HOME/jdk/jdk6
   $HOME/jdk/jdk7
   $HOME/jdk/jdk8
   $HOME/jdk/jdk9
+  $HOME/jdk/jdk10
   where each of the above is a JDK or a symlink to same, and
-  $HOME/jdk/src/jdk6
   $HOME/jdk/src/jdk7
   $HOME/jdk/src/jdk8
   $HOME/jdk/src/jdk9
+  $HOME/jdk/src/jdk10
   where each of the above is a complete JDK source tree
   (e.g. mercurial forest) or a symlink to same.
 
   Alternatively, define ant variables thus:
   ant -Djdk$N.home=... -Djdk$N.src.home=...
-  for $N in 6 7 8 9 ...
+  for $N in 7 8 9 10 ...
 
-  As of 2016-03, the sources in src/main are for jdk9+ only.  The "docs"
-  target is currently broken.
+  As of 2016-03, the sources in src/main are for jdk9+ only.
 ------------------------------------------------------------------------------
   </description>
 
@@ -63,7 +63,6 @@
   <property name="build.classes.dir"           location="${build.dir}/classes"/>
   <property name="build.testcases.dir"         location="${build.dir}/testcases"/>
   <property name="build.loops.dir"             location="${build.dir}/loops"/>
-  <property name="build.reports.dir"           location="${build.dir}/reports"/>
 
   <property name="build.4jdk7.dir"             location="${build.dir}/jsr166-4jdk7"/>
   <property name="build.4jdk7.classes.dir"     location="${build.4jdk7.dir}/classes"/>
@@ -134,6 +133,7 @@
   <defjdklocations v="7"/>
   <defjdklocations v="8"/>
   <defjdklocations v="9"/>
+  <defjdklocations v="10"/>
 
   <!-- Source locations -->
   <property name="src.dir"              location="${basedir}/src/main"/>
@@ -143,6 +143,7 @@
   <property name="jtreg7.src.dir"       location="${test.src.dir}/jtreg-jdk7"/>
   <property name="jtreg8.src.dir"       location="${test.src.dir}/jtreg-jdk8"/>
   <property name="jtreg9.src.dir"       location="${test.src.dir}/jtreg"/>
+  <property name="jtreg10.src.dir"      location="${test.src.dir}/jtreg"/>
   <property name="jtreg.src.dir"        location="${jtreg9.src.dir}"/>
   <property name="lib.dir"              location="${basedir}/lib"/>
   <property name="dist.dir"             location="${basedir}/dist"/>
@@ -188,7 +189,7 @@
   <property name="java8.docroot.url"      value="http://docs.oracle.com/javase/8/docs"/>
   <!-- The expected canonical location does not yet exist as of 2016-04 -->
   <!-- <property name="java9.docroot.url" value="http://docs.oracle.com/javase/9/docs"/> -->
-  <property name="java9.docroot.url"      value="http://http://download.java.net/java/jdk9/docs"/>
+  <property name="java9.docroot.url"      value="http://download.java.net/java/jdk9/docs"/>
   <!-- Default jdk doc location (latest stable release seems best) -->
   <property name="java.docroot.url"       value="${java8.docroot.url}"/>
 
@@ -233,6 +234,11 @@
       <available file="${jdk@{compile-target}.home}/jmods" type="dir"/>
     </condition>
 
+    <local name="use-doclint"/>
+    <condition property="use-doclint">
+      <not> <equals arg1="@{target}" arg2="7"/> </not>
+    </condition>
+
     <mkdir dir="@{workdir}/tck-classes"/>
 
     <javac srcdir="@{tck.src.dir}"
@@ -245,14 +251,16 @@
            classpath="${junit.jar}"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac@{compile-target}}"
            fork="true">
 
       <include name="*.java"/>
       <compilerarg value="-XDignore.symbol.file=true"/>
       <compilerarg value="-Xlint:all,-unchecked,-rawtypes,-serial,-deprecation,-try"/>
+      <compilerarg value="-Xdoclint:reference/private" if:set="use-doclint"/>
       <compilerarg value="-Xbootclasspath/p:@{classes}" unless:set="modules"/>
-      <compilerarg value="-Xpatch:java.base=${build.classes.dir}/java.base" if:set="modules"/>
+      <compilerarg value="--patch-module=java.base=@{classes}" if:set="modules"/>
       <compilerarg line="${build.args}"/>
       <javac-elements/>
 
@@ -263,10 +271,17 @@
           jvm="${java@{target}}"
           fork="true">
 	<jvmarg value="-Xbootclasspath/p:@{classes}" unless:set="modules"/>
-	<jvmarg value="-Xpatch:java.base=${build.classes.dir}/java.base" if:set="modules"/>
+	<jvmarg value="--patch-module=java.base=@{classes}" if:set="modules"/>
+	<jvmarg value="--add-opens=java.base/java.lang=ALL-UNNAMED" if:set="modules"/>
+	<jvmarg value="--add-opens=java.base/java.util=ALL-UNNAMED" if:set="modules"/>
+	<jvmarg value="--add-opens=java.base/java.util.concurrent=ALL-UNNAMED" if:set="modules"/>
+	<jvmarg value="--add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED" if:set="modules"/>
+	<jvmarg value="--add-opens=java.base/java.util.concurrent.locks=ALL-UNNAMED" if:set="modules"/>
 	<jvmarg line="@{jvmflags}"/>
+	<!-- ant -Dvmoptions="-Xmx8m" -Djsr166.tckTestClass=CompletableFutureTest tck -->
+	<jvmarg line="${vmoptions}" if:set="vmoptions"/>
 
-        <!-- ant -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 tck -->
+	<!-- ant -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 tck -->
 	<syspropertyset id="system-properties-used-by-tck">
 	  <propertyref prefix="java.util.concurrent.ForkJoinPool"/>
 	  <propertyref prefix="jsr166."/>
@@ -292,9 +307,6 @@
   <fileset dir="${jtreg8.src.dir}">
     <patternset id="jdk8.jtreg.tests">
       <include name="**/*.java"/>
-      <exclude name="**/SpliteratorCharacteristics.java"/>
-      <!-- https://bugs.openjdk.java.net/browse/JDK-6842353 -->
-      <exclude name="**/GCDuringIteration.java"/>
     </patternset>
   </fileset>
 
@@ -326,15 +338,15 @@
     </condition>
 
     <delete dir="@{workdir}/JTwork"   quiet="true"/>
-    <delete dir="@{workdir}/JTreport" quiet="true"/>
     <jtreg dir="${jtreg@{target}.src.dir}"
            jdk="${jdk@{target}.home}"
-           workDir="@{workdir}/JTwork"
-           reportDir="@{workdir}/JTreport">
+           workDir="@{workdir}/JTwork">
       <patternset refid="jdk@{target}.jtreg.tests"/>
       <arg value="-Xbootclasspath/p:@{classes}" unless:set="modules"/>
-      <arg value="-vmoption:-Xpatch:java.base=${build.classes.dir}/java.base" if:set="modules"/>
+      <arg value="-javacoptions:--patch-module java.base=@{classes}" if:set="modules"/>
+      <arg value="-vmoptions:--patch-module java.base=@{classes}" if:set="modules"/>
       <arg value="-agentvm"/>
+      <arg value="-noreport"/>
       <arg value="-verbose:${jtreg.verbose}"/>
       <arg value="-vmoptions:-esa -ea"/>
       <arg value="-automatic"/>
@@ -389,16 +401,17 @@
            classpath=""
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${build.main.javac}"
            fork="true">
 
       <include name="**/*.java"/>
-      <compilerarg value="-Xmodule:java.base" if:set="modules"/>
+      <compilerarg value="--patch-module=java.base=${src.dir}" if:set="modules"/>
       <compilerarg value="-Xprefer:source"/>
       <compilerarg value="-XDignore.symbol.file=true"/>
       <compilerarg value="-Xlint:all"/>
       <compilerarg value="-Werror"/>
-      <compilerarg value="-Xdoclint:all/protected"/>
+      <compilerarg value="-Xdoclint:all/protected,reference/private"/>
       <compilerarg line="-Xmaxerrs 1000 -Xmaxwarns 1000"/>
       <compilerarg line="${build.args}"/>
 
@@ -409,9 +422,10 @@
   <target name="jar"
           depends="compile"
           description="Builds library jar for src/main from compiled sources">
-
+    <local name="subdir"/>
+    <available property="subdir" file="${build.classes.dir}/java.base" type="dir" value="/java.base"/>
     <jar destfile="${product.jar}">
-      <fileset dir="${build.classes.dir}"/>
+      <fileset dir="${build.classes.dir}${subdir}"/>
       <manifest>
         <attribute name="Built-By" value="${user.name}"/>
         <attribute name="Implementation-Vendor" value="JCP JSR-166 Expert Group."/>
@@ -429,12 +443,17 @@
     <!-- the packagenames="none" hack below prevents scanning the -->
     <!-- sourcepath for packages -->
 
+<!-- TODO: sourcepath="${src.dir}:${jdk9.src.dir}" -->
+<!-- TODO: sourcepath="${src.dir}:${jdk9.src.dir}:${jdk9.src.home}/jdk/src/java.logging/share/classes" -->
+<!-- TODO: sourcepath="${src.dir}:${jdk9.home}/src.zip" -->
+<!-- TODO: <arg line="-sourcepath ${src.dir}:${jdk9.home}/src.zip"/> -->
+<!-- TODO: <arg line="- -module-source-path ${jdk9.home}/src.zip"/> -->
     <javadoc destdir="${docs.dir}"
              packagenames="none"
              link="${java9.api.url}"
              overview="${src.dir}/intro.html"
              access="${build.javadoc.access}"
-             sourcepath="${src.dir}:${jdk9.src.dir}"
+             sourcepath="${src.dir}"
              classpath=""
              executable="${javadoc9}">
       <fileset dir="${src.dir}" defaultexcludes="yes">
@@ -443,20 +462,21 @@
       <arg line="-Xdocrootparent ${java9.docroot.url}"/>
       <arg line="-Xmaxerrs 1000 -Xmaxwarns 1000"/>
       <arg value="-XDignore.symbol.file=true"/>
-<!--  TODO     <arg value="-Xmodule:java.base"/> -->
+      <arg value="--patch-module=java.base=${src.dir}"/>
       <arg value="-tag"/>
       <arg value="${javadoc.jls.option}"/>
+<!-- @apiNote currently unused -->
+<!--       <arg value="-tag"/> -->
+<!--       <arg value="apiNote:a:API Note:"/> -->
       <arg value="-tag"/>
-      <arg value="apiNote:a:&lt;em&gt;API Note:&lt;/em&gt;"/>
-      <arg value="-tag"/>
-      <arg value="implSpec:a:&lt;em&gt;Implementation Requirements:&lt;/em&gt;"/>
-      <arg value="-tag"/>
-      <arg value="implNote:a:&lt;em&gt;Implementation Note:&lt;/em&gt;"/>
-<!-- tags added in jdk9 -->
+      <arg value="implSpec:a:Implementation Requirements:"/>
       <arg value="-tag"/>
-      <arg value="revised:X"/>
-      <arg value="-tag"/>
-      <arg value="spec:X"/>
+      <arg value="implNote:a:Implementation Note:"/>
+<!-- tags added in jdk9: currently unused -->
+<!--       <arg value="-tag"/> -->
+<!--       <arg value="revised:X"/> -->
+<!--       <arg value="-tag"/> -->
+<!--       <arg value="spec:X"/> -->
     </javadoc>
   </target>
 
@@ -522,7 +542,11 @@
     <run-tck-tests
       target="${build.main.java.version}"
       workdir="${build.dir}"
-      classes="${product.jar}"/>
+      classes="${product.jar}">
+      <javac-elements>
+        <compilerarg value="-Werror"/>
+      </javac-elements>
+    </run-tck-tests>
   </target>
 
   <target name="tck-parallelism-1"
@@ -539,6 +563,13 @@
     </antcall>
   </target>
 
+  <target name="tck-security-manager"
+          description="Runs tck with a security manager">
+    <antcall target="tck">
+      <param name="jsr166.useSecurityManager" value="true"/>
+    </antcall>
+  </target>
+
   <target name="jtreg"
 	  depends="jar"
           description="Runs jtreg tests for src/main using the jtreg ant task">
@@ -583,9 +614,7 @@
 
   <target name="configure-compiler">
     <fail message="ant version too old">
-      <condition>
-	<not> <antversion atleast="1.9.1"/> </not>
-      </condition>
+      <condition> <not> <antversion atleast="1.9.1"/> </not> </condition>
     </fail>
 
     <property name="unchecked.option" value="-Xlint:unchecked"/>
@@ -619,6 +648,7 @@
       deprecation="${build.deprecation}"
            source="${build.sourcelevel}"
            target="${build.sourcelevel}"
+         encoding="ASCII"
              fork="true">
 
       <compilerarg line="${build.args}"/>
@@ -646,6 +676,7 @@
            deprecation="${build.deprecation}"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac9}"
            fork="true">
 
@@ -679,6 +710,7 @@
            bootclasspath="${bootclasspath8}"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac8}"
            fork="true">
 
@@ -709,6 +741,7 @@
            bootclasspath="${bootclasspath8}"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac8}"
            fork="true">
 
@@ -716,7 +749,7 @@
       <compilerarg value="-Xprefer:source"/>
       <compilerarg value="-XDignore.symbol.file=true"/>
       <compilerarg value="-Xlint:all"/>
-      <compilerarg value="-Xdoclint:all/protected"/>
+      <compilerarg value="-Xdoclint:all/protected,reference/private"/>
       <compilerarg line="${build.args}"/>
 
     </javac>
@@ -750,6 +783,7 @@
         <!-- JDK9+ test classes -->
         <exclude name="*9Test.java"/>
         <exclude name="*10Test.java"/>
+        <compilerarg value="-Werror"/>
       </javac-elements>
     </run-tck-tests>
   </target>
@@ -793,8 +827,9 @@
       <arg value="-XDignore.symbol.file=true"/>
       <arg value="-tag"/>
       <arg value="${javadoc.jls.option}"/>
-      <arg value="-tag"/>
-      <arg value="apiNote:a:&lt;em&gt;API Note:&lt;/em&gt;"/>
+<!-- @apiNote currently unused -->
+<!--       <arg value="-tag"/> -->
+<!--       <arg value="apiNote:a:&lt;em&gt;API Note:&lt;/em&gt;"/> -->
       <arg value="-tag"/>
       <arg value="implSpec:a:&lt;em&gt;Implementation Requirements:&lt;/em&gt;"/>
       <arg value="-tag"/>
@@ -848,6 +883,7 @@
            bootclasspath="${bootclasspath6}"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac7}"
            fork="true">
 
@@ -878,6 +914,7 @@
            bootclasspath="${bootclasspath6}"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac8}"
            fork="true">
 
@@ -928,6 +965,7 @@
         <exclude name="SplittableRandomTest.java"/>
         <exclude name="StampedLockTest.java"/>
         <exclude name="SubmissionPublisherTest.java"/>
+        <compilerarg value="-Werror"/>
       </javac-elements>
     </run-tck-tests>
   </target>
@@ -1045,6 +1083,7 @@
            target="5"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac7}"
            fork="true">
 
@@ -1138,6 +1177,7 @@
            bootclasspath="${bootclasspath6}"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac7}"
            fork="true">
 
@@ -1232,6 +1272,7 @@
            target="6"
            includeAntRuntime="false"
            includeJavaRuntime="false"
+           encoding="ASCII"
            executable="${javac7}"
            fork="true">
 
@@ -1480,4 +1521,153 @@
   </target>
 
 
+<!-- ==============================================================
+  Experimental errorprone support - http://errorprone.info
+  You may need to bring your own errorprone jar.
+=================================================================== -->
+  <target name="errorprone"
+          depends="clean, configure-compiler"
+          description="Run errorprone over jsr166 source code">
+
+    <local name="destdir"/>
+    <property name="destdir" value="${build.classes.dir}/java.base"/>
+    <mkdir dir="${destdir}"/>
+
+    <javac srcdir="${src.dir}"
+           destdir="${destdir}"
+           debug="${build.debug}"
+           debuglevel="${build.debuglevel}"
+           deprecation="${build.deprecation}"
+           classpath=""
+           includeAntRuntime="false"
+           includeJavaRuntime="false"
+           encoding="ASCII"
+           executable="${build.main.javac}"
+           fork="true">
+
+      <include name="**/*.java"/>
+      <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED"/>
+      <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"/>
+      <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED"/>
+      <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED"/>
+      <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED"/>
+      <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED"/>
+      <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED"/>
+      <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED"/>
+      <compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED"/>
+      <compilerarg line="-processorpath ${lib.dir}/error_prone_ant-2.0.20-SNAPSHOT.jar"/>
+      <compilerarg value="-Xplugin:ErrorProne
+                          -Xep:IdentityBinaryExpression:WARN 
+                          -Xep:MissingOverride:OFF
+                          -Xep:MixedArrayDimensions:WARN 
+                          -Xep:RemoveUnusedImports:ERROR 
+                          -Xep:MethodCanBeStatic:WARN"/>
+      <compilerarg value="--patch-module=java.base=${src.dir}"/>
+      <compilerarg value="-Xprefer:source"/>
+      <compilerarg value="-XDignore.symbol.file=true"/>
+      <compilerarg value="-Xlint:all"/>
+      <compilerarg value="-Xdoclint:all/protected,reference/private"/>
+      <compilerarg line="-Xmaxerrs 3000 -Xmaxwarns 3000"/>
+      <compilerarg line="${build.args}"/>
+    </javac>
+
+    <jar destfile="${product.jar}">
+      <fileset dir="${destdir}"/>
+    </jar>
+
+    <run-tck-tests
+      target="${build.main.java.version}"
+      workdir="${build.dir}"
+      classes="${product.jar}">
+      <javac-elements>
+        <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED"/>
+        <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED"/>
+        <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED"/>
+        <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED"/>
+        <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED"/>
+        <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED"/>
+        <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED"/>
+        <compilerarg value="-J--add-exports=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED"/>
+        <compilerarg value="-J--add-opens=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED"/>
+        <compilerarg line="-processorpath ${lib.dir}/error_prone_ant-2.0.20-SNAPSHOT.jar"/>
+        <compilerarg value="-Xplugin:ErrorProne 
+                            -Xep:IdentityBinaryExpression:WARN 
+                            -Xep:BoxedPrimitiveConstructor:OFF 
+                            -Xep:HashtableContains:OFF 
+                            -Xep:ModifyingCollectionWithItself:OFF 
+                            -Xep:MissingOverride:OFF 
+                            -Xep:MixedArrayDimensions:WARN 
+                            -Xep:RemoveUnusedImports:ERROR 
+                            -Xep:MethodCanBeStatic:WARN"/>
+        <compilerarg line="-Xmaxerrs 3000 -Xmaxwarns 3000"/>
+      </javac-elements>
+    </run-tck-tests>
+  </target>
+
+
+<!-- ==============================================================
+  Running guava tests against jsr166 code
+=================================================================== -->
+
+<!-- <ivy:cachepath pathid="lib.path.id" inline="true" conf="*" -->
+<!--   organisation="com.google.guava" module="guava-testlib" revision="21.0"/> -->
+<!-- <property name="guava.version" value="21.0"/> -->
+
+<!-- HOWTO debug print a path id -->
+<!-- <pathconvert property="guava.testlib.classpath" refid="guava.testlib.classpath" /> -->
+<!-- <echo message="guava.testlib.classpath=${guava.testlib.classpath}"/> -->
+
+<!-- <ivy:retrieve pathid="guava.tests.classpath" type="jar" inline="true" conf="*" pattern="${lib.dir}/[type]/[artifact].[ext]" -->
+<!--   organisation="com.google.guava" module="guava-tests"/> -->
+<!-- <get src="http://repo2.maven.org/maven2/com/google/guava/guava-tests/${guava.version}/guava-tests-${guava.version}-tests.jar" -->
+<!--   dest="${lib.dir}/jar/guava-tests-tests.jar" usetimestamp="true"/> -->
+<!--     <ivy:cachepath pathid="lib.path.id" inline="true" conf="*" type="*" -->
+<!--       organisation="com.google.guava" module="guava-testlib" revision="${guava.version}"/> -->
+
+<!-- <test name="com.google.common.collect.testing.TestsForQueuesInJavaUtil"/> -->
+<!-- <test name="com.google.common.collect.testing.TestsForListsInJavaUtil"/> -->
+<!-- <test name="com.google.common.collect.testing.TestsForSetsInJavaUtil"/> -->
+<!-- <test name="com.google.common.collect.testing.TestsForMapsInJavaUtil"/> -->
+
+<!-- <ivy:retrieve pathid="guava.testlib.classpath" -->
+<!--   type="*" inline="true" conf="*(private),*(public)" -->
+<!--   pattern="${guava.dir}/[artifact].[ext]" -->
+<!--   organisation="com.google.guava" module="guava-testlib"/> -->
+
+<!-- Work around bug below by downloading guava-testlib-tests.jar "by hand": -->
+<!-- https://issues.apache.org/jira/browse/IVY-1444 -->
+<!-- maven tests artifacts cannot be downloaded because they are mapped to private configurations -->
+
+  <target name="init-ivy">
+    <get src="http://repo2.maven.org/maven2/org/apache/ivy/ivy/2.4.0/ivy-2.4.0.jar"
+         dest="${build.dir}/ivy.jar" usetimestamp="true" skipexisting="true"/>
+    <taskdef resource="org/apache/ivy/ant/antlib.xml" uri="antlib:org.apache.ivy.ant"
+             classpath="${build.dir}/ivy.jar"/>
+  </target>
+
+  <target name="guava-tests" depends="jar, init-ivy"
+          description="Guava tests run against jsr166 collections">
+    <property name="guava.dir" value="${build.dir}/guava-testlib"/>
+    <mkdir dir="${guava.dir}"/>
+    <ivy:retrieve pathid="guava.testlib.classpath"
+      type="jar,bundle" inline="true" conf="default,master"
+      pattern="${guava.dir}/[artifact].[ext]"
+      organisation="com.google.guava" module="guava-testlib"/>
+    <property name="guava.version" value="21.0"/>
+    <get src="http://repo2.maven.org/maven2/com/google/guava/guava-testlib/${guava.version}/guava-testlib-${guava.version}-tests.jar"
+         dest="${guava.dir}/guava-testlib-tests.jar" usetimestamp="true"/>
+    <junit printsummary="true" showoutput="true" haltonfailure="true"
+           jvm="${java9}" fork="true">
+      <jvmarg line="-ea -esa --patch-module java.base=${product.jar}"/>
+      <formatter type="brief"/>
+      <classpath>
+        <pathelement location="${guava.dir}/guava-testlib-tests.jar"/>
+        <path refid="guava.testlib.classpath"/>
+      </classpath>
+
+      <!-- "6" in "OpenJdk6Tests" misleadingly means "6+" -->
+      <test name="com.google.common.collect.testing.OpenJdk6Tests"/>
+    </junit>
+  </target>
+
 </project>