--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/sjavac/JavacState.java	Tue Nov 03 17:54:36 2015 +0100
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/sjavac/JavacState.java	Tue Nov 03 21:29:46 2015 +0100
@@ -527,7 +527,7 @@
      * Compare the javac_state recorded public apis of packages on the classpath
      * with the actual public apis on the classpath.
      */
-    public void taintPackagesDependingOnChangedClasspathPackages() {
+    public void taintPackagesDependingOnChangedClasspathPackages() throws IOException {
 
         // 1. Collect fully qualified names of all interesting classpath dependencies
         Set<String> fqDependencies = new HashSet<>();
@@ -549,6 +549,7 @@
         for (String cpDep : fqDependencies) {
             onDiskPubApi.put(cpDep, pubApiExtractor.getPubApi(cpDep));
         }
+        pubApiExtractor.close();
 
         // 3. Compare them with the public APIs as of last compilation (loaded from javac_state)
         nextPkg:

--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/sjavac/PubApiExtractor.java	Tue Nov 03 17:54:36 2015 +0100
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/sjavac/PubApiExtractor.java	Tue Nov 03 21:29:46 2015 +0100
@@ -25,6 +25,7 @@
 
 package com.sun.tools.sjavac;
 
+import java.io.IOException;
 import java.io.PrintWriter;
 import java.util.Arrays;
 
@@ -46,8 +47,10 @@
 public class PubApiExtractor {
     // Setup a compiler context for finding classes in the classpath
     // and to execute annotation processors.
-    Context context;
-    CompilationTask task;
+    final Context context;
+    final CompilationTask task;
+
+    final SmartFileManager fileManager;
 
     /**
      * Setup a compilation context, used for reading public apis of classes on the classpath
@@ -55,7 +58,7 @@
      */
     public PubApiExtractor(Options options) {
         JavacTool compiler = com.sun.tools.javac.api.JavacTool.create();
-        SmartFileManager fileManager = new SmartFileManager(compiler.getStandardFileManager(null, null, null));
+        fileManager = new SmartFileManager(compiler.getStandardFileManager(null, null, null));
         context = new com.sun.tools.javac.util.Context();
         String[] args = options.prepJavacArgs();
         task = compiler.getTask(new PrintWriter(System.err),
@@ -82,4 +85,8 @@
         v.visit(cs);
         return v.getCollectedPubApi();
     }
+
+    public void close() throws IOException {
+        fileManager.close();
+    }
 }

--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/sjavac/comp/SjavacImpl.java	Tue Nov 03 17:54:36 2015 +0100
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/sjavac/comp/SjavacImpl.java	Tue Nov 03 21:29:46 2015 +0100
@@ -209,21 +209,20 @@
             // Go through all sources and taint all packages that miss artifacts.
             javac_state.taintPackagesThatMissArtifacts();
 
-            // Check recorded classpath public apis. Taint packages that depend on
-            // classpath classes whose public apis have changed.
-            javac_state.taintPackagesDependingOnChangedClasspathPackages();
+            try {
+                // Check recorded classpath public apis. Taint packages that depend on
+                // classpath classes whose public apis have changed.
+                javac_state.taintPackagesDependingOnChangedClasspathPackages();
 
-            // Now clean out all known artifacts belonging to tainted packages.
-            javac_state.deleteClassArtifactsInTaintedPackages();
-            // Copy files, for example property files, images files, xml files etc etc.
-            javac_state.performCopying(Util.pathToFile(options.getDestDir()), suffixRules);
-            // Translate files, for example compile properties or compile idls.
-            javac_state.performTranslation(Util.pathToFile(gensrc), suffixRules);
-            // Add any potentially generated java sources to the tobe compiled list.
-            // (Generated sources must always have a package.)
-            Map<String,Source> generated_sources = new HashMap<>();
-
-            try {
+                // Now clean out all known artifacts belonging to tainted packages.
+                javac_state.deleteClassArtifactsInTaintedPackages();
+                // Copy files, for example property files, images files, xml files etc etc.
+                javac_state.performCopying(Util.pathToFile(options.getDestDir()), suffixRules);
+                // Translate files, for example compile properties or compile idls.
+                javac_state.performTranslation(Util.pathToFile(gensrc), suffixRules);
+                // Add any potentially generated java sources to the tobe compiled list.
+                // (Generated sources must always have a package.)
+                Map<String,Source> generated_sources = new HashMap<>();
 
                 Source.scanRoot(Util.pathToFile(options.getGenSrcDir()), Util.set(".java"), null, null, null, null,
                         generated_sources, modules, current_module, false, true, false);

--- a/langtools/test/tools/sjavac/ApiExtraction.java	Tue Nov 03 17:54:36 2015 +0100
+++ b/langtools/test/tools/sjavac/ApiExtraction.java	Tue Nov 03 21:29:46 2015 +0100
@@ -92,6 +92,7 @@
         Options options = Options.parseArgs("-d", "bin", "--state-dir=bin", "-cp", ".");
         PubApiExtractor pubApiExtr = new PubApiExtractor(options);
         PubApi actualApi = pubApiExtr.getPubApi("TestClass");
+        pubApiExtr.close();
 
         // Validate result
         PubApi expectedApi = getExpectedPubApi();