diff -r 640eb9781ce5 -r 0d00f3ea77bc langtools/test/tools/javac/modules/MissingModuleTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/modules/MissingModuleTest.java	Fri Feb 03 08:16:24 2017 -0800
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8172240
+ * @summary javac should not need the transitive closure to compile a module
+ * @library /tools/lib
+ * @modules
+ *      jdk.compiler/com.sun.tools.javac.api
+ *      jdk.compiler/com.sun.tools.javac.code
+ *      jdk.compiler/com.sun.tools.javac.main
+ *      jdk.compiler/com.sun.tools.javac.processing
+ * @build toolbox.ToolBox toolbox.JavacTask toolbox.ModuleBuilder ModuleTestBase
+ * @run main MissingModuleTest
+ */
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Arrays;
+import java.util.List;
+
+import toolbox.JavacTask;
+import toolbox.Task;
+import toolbox.Task.Expect;
+
+public class MissingModuleTest extends ModuleTestBase {
+
+    public static void main(String... args) throws Exception {
+        new MissingModuleTest().runTests();
+    }
+
+    @Test
+    public void testMissingNotNeeded(Path base) throws Exception {
+        doTest(base, "m1x", new String[0]);
+    }
+
+    @Test
+    public void testMissingNeededTransitive(Path base) throws Exception {
+        doTest(base, "m2x", "- compiler.err.module.not.found: m2x", "1 error");
+    }
+
+    @Test
+    public void testMissingNeededDirect(Path base) throws Exception {
+        doTest(base, "m3x", "module-info.java:1:24: compiler.err.module.not.found: m3x", "1 error");
+    }
+
+    @Test
+    public void testMultipleErrors(Path base) throws Exception {
+        doTest(base, "m4x", "module-info.java:1:38: compiler.err.module.not.found: m4x", "1 error");
+    }
+
+    private void doTest(Path base, String toDelete, String... errors) throws Exception {
+        //note: avoiding use of java.base, as that gets special handling on some places:
+        Path srcMP = base.resolve("src-mp");
+        Path m1x = srcMP.resolve("m1x");
+        tb.writeJavaFiles(m1x,
+                          "module m1x { exports api1; }",
+                          "package api1; public interface Api { }");
+        Path m2x = srcMP.resolve("m2x");
+        tb.writeJavaFiles(m2x,
+                          "module m2x { requires m1x; exports api2; }",
+                          "package api2; public interface Api { }");
+        Path m3x = srcMP.resolve("m3x");
+        tb.writeJavaFiles(m3x,
+                          "module m3x { requires transitive m2x; }");
+        Path m4x = srcMP.resolve("m4x");
+        tb.writeJavaFiles(m4x,
+                          "module m4x { requires transitive m2x; }");
+        Path m5x = srcMP.resolve("m5x");
+        tb.writeJavaFiles(m5x,
+                          "module m5x { requires transitive m4x; }");
+        Path classesMP = base.resolve("classes-mp");
+        tb.createDirectories(classesMP);
+
+        new JavacTask(tb)
+            .options("--module-source-path", srcMP.toString())
+            .outdir(classesMP)
+            .files(findJavaFiles(srcMP))
+            .run()
+            .writeAll();
+
+        tb.cleanDirectory(classesMP.resolve(toDelete));
+        Files.delete(classesMP.resolve(toDelete));
+
+        Path src = base.resolve("src");
+        tb.writeJavaFiles(src,
+                          "module test { requires m3x; requires m4x; requires m5x; } ");
+        Path classes = base.resolve("classes");
+        tb.createDirectories(classes);
+
+        List<String> log = new JavacTask(tb)
+                .options("--module-path", classesMP.toString(),
+                         "-XDrawDiagnostics")
+                .outdir(classes)
+                .files(findJavaFiles(src))
+                .run(errors.length > 0 ? Expect.FAIL : Expect.SUCCESS)
+                .writeAll()
+                .getOutputLines(Task.OutputKind.DIRECT);
+
+        if (errors.length == 0) {
+            errors = new String[] {""};
+        }
+
+        if (!log.equals(Arrays.asList(errors)))
+            throw new Exception("expected output not found: " + log);
+    }
+
+}