I believe the assertion in Varargs.assertTypesAreCompatible() should be:

assert componentType.isAssignableFrom(in)

Instead of:

assert in.isAssignableFrom(componentType)

Here is a test that shows the issue:

@Test
public void testVarargs()
        throws Throwable
{
    MethodHandle foo = Binder.from(MethodType.methodType(String.class, String.class))
            .varargs(0, Object[].class)
            .invokeStatic(lookup(), getClass(), "foo");
    Assert.assertEquals(foo.invokeWithArguments("value"), "value");
}

public static String foo(Object... args)
{
    return (String) args[0];
}

module-info.java requires Java 9 so the source should be specified as 9.

Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:jar (default-cli) on project invokebinder: MavenReportException: Error while generating Javadoc:
Exit code: 1 - /root/deb/invokebinder/src/main/java/module-info.java:1: error: modules are not supported in -source 8
module com.headius.invokebinder {
^
  (use -source 9 or higher to enable modules)

Command line was: /usr/lib/jvm/java-11-openjdk-amd64/bin/javadoc @options @packages @argfile

Hi,

I was just testing the build on travis-ci. But its failing with below error:
"
Worker information
0.16s0.01s0.00s0.01s
system_info
Build system information
0.02s0.01s0.64s0.23s0.05s0.00s0.04s0.00s0.01s0.01s0.01s0.01s0.01s0.00s0.00s0.02s0.00s0.01s0.36s0.00s0.00s0.00s0.01s0.00s0.10s0.01s0.85s0.00s0.00s6.03s0.00s2.93s0.00s2.56s
docker_mtu
resolvconf
install_jdk
Installing oraclejdk9
11.98s$ travis_apt_get_update
Installing APT Packages
0.42s$ sudo -E apt-get -yq --no-install-suggests --no-install-recommends $(travis_apt_get_options) install oracle-java9-installer
Reading package lists...
Building dependency tree...
Reading state information...
Package oracle-java9-installer is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'oracle-java9-installer' has no installation candidate
apt-get.diagnostics
apt-get install failed
The command "sudo -E apt-get -yq --no-install-suggests --no-install-recommends $(travis_apt_get_options) install oracle-java9-installer" failed and exited with 100 during .
Your build has been stopped.
"

Please have a look on this.

Thanks !!

Add maven-bundle-plugin to POM and allow to install and use invokebinder in OSGi environment

.. if possible. Thanx!