public static record Child(String name) implements Parent {}
            }
        """
    }

    def "source compatibility lower than compiler version does not allow accessing newer Java language features"() {
        def jdk = AvailableJavaHomes.getJdk(JavaVersion.VERSION_17)

        buildFile << """
            apply plugin: "java"

            java {
                toolchain {

			"Each plugin listed should be manually verified for compatibility with the newer version of CoreDNS. " +
			"Once ready, the upgrade can be initiated by skipping the preflight check. During the upgrade, " +
			"kubeadm will migrate the configuration while leaving the listed plugin configs untouched, " +
			"but cannot guarantee that they will work with the newer version of CoreDNS.")

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

// Newer official download info URLs appear earlier below.

#   * v0.1.0
#   * v0.0.0-20190430073000-30950c05d534
# Only v0.1.0 is tagged.
#
# The v0.1.1 pseudo-version is semantically higher than the latest tag.
# The v0.0.0 pseudo-version is chronologically newer.

# The latest pseudo-version is semantically higher than the latest tag.
# 'list -u' should not suggest a lower version as an upgrade.

go get example.com/pseudoupgrade@b5426c8
go list -m -u all

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

// Newer official download info URLs appear earlier below.

	// sequence of string pointers followed by a NULL, and auxv.
	// There is no TLS base pointer.
	//
	// TODO(austin): Support ABI v1 dynamic linking entry point
	XOR	R0, R0 // Note, newer kernels may not always set R0 to 0.
	MOVD	$runtime·rt0_go(SB), R12
	MOVD	R12, CTR
	MOVBZ	runtime·iscgo(SB), R5
	CMP	R5, $0
	BEQ	nocgo
	BR	(CTR)
nocgo:
	MOVD	0(R1), R3 // argc
	ADD	$8, R1, R4 // argv

# Test that dependencies can use Go language features newer than the
# Go version specified by the main module.

env GO111MODULE=on

go build

-- go.mod --
module m
go 1.12
require (
	sub.1 v1.0.0
)
replace (
	sub.1 => ./sub
)

-- x.go --
package x

import "sub.1"

func F() { sub.F(0, 0) }

var A sub.Alias
var D sub.Defined

-- sub/go.mod --
module m
go 1.14

-- sub/sub.go --

				kubeadmVersion: "v1.12.3",
			},
			newK8sVersion:         "v1.10.10",
			expectedMandatoryErrs: 1, // version must be higher than v1.12.0
			expectedSkippableErrs: 1, // can't upgrade old k8s with newer kubeadm
		},
		{
			name: "upgrading two minor versions in one go is not supported",
			vg: &fakeVersionGetter{
				clusterVersion: "v1.11.3",
				kubeletVersion: "v1.11.3",
				kubeadmVersion: "v1.13.0",
			},

     Required by:
         project :
      > Dependency resolution is looking for a library compatible with JVM runtime version 6, but 'project :producer' is only compatible with JVM runtime version 7 or newer.""")
        failure.assertHasResolution("Change the dependency on 'project :producer' to an earlier version that supports JVM runtime version 7.")
    }

func Accept(fd int) (nfd int, sa Sockaddr, err error) {
	var rsa RawSockaddrAny
	var len _Socklen = SizeofSockaddrAny
	// Try accept4 first for Android and newer kernels.
	nfd, err = accept4(fd, &rsa, &len, 0)
	if err == ENOSYS {
		nfd, err = accept(fd, &rsa, &len)
	}
	if err != nil {
		return
	}
	sa, err = anyToSockaddr(&rsa)
	if err != nil {
		Close(nfd)