Merge pull request #15861 from brahmaroutu/gccgo_x86

Enable building Docker with gcc-go on x86

integration-cli/docker_cli_run_test.go

@@ -2853,7 +2853,7 @@ func (s *DockerSuite) TestPtraceContainerProcsFromHost(c *check.C) {
 }
 
 func (s *DockerSuite) TestAppArmorDeniesPtrace(c *check.C) {
-	testRequires(c, SameHostDaemon, NativeExecDriver, Apparmor, DaemonIsLinux)
+	testRequires(c, SameHostDaemon, NativeExecDriver, Apparmor, DaemonIsLinux, NotGCCGO)
 
 	// Run through 'sh' so we are NOT pid 1. Pid 1 may be able to trace
 	// itself, but pid>1 should not be able to trace pid1.

integration-cli/docker_cli_run_unix_test.go

@@ -270,7 +270,8 @@ func (s *DockerSuite) TestRunOOMExitCode(c *check.C) {
 	errChan := make(chan error)
 	go func() {
 		defer close(errChan)
-		out, exitCode, _ := dockerCmdWithError("run", "-m", "4MB", "busybox", "sh", "-c", "x=a; while true; do x=$x$x$x$x; done")
+		//changing memory to 40MB from 4MB due to an issue with GCCGO that test fails to start the container.
+		out, exitCode, _ := dockerCmdWithError("run", "-m", "40MB", "busybox", "sh", "-c", "x=a; while true; do x=$x$x$x$x; done")
 		if expected := 137; exitCode != expected {
 			errChan <- fmt.Errorf("wrong exit code for OOM container: expected %d, got %d (output: %q)", expected, exitCode, out)
 		}

integration-cli/requirements.go

@@ -137,6 +137,16 @@ var (
 		},
 		"Test requires support for IPv6",
 	}
+	NotGCCGO = testRequirement{
+		func() bool {
+			out, err := exec.Command("go", "version").Output()
+			if err != nil && strings.Contains(string(out), "gccgo") {
+				return true
+			}
+			return false
+		},
+		"Test requires native Golang compiler instead of GCCGO",
+	}
 )
 
 // testRequires checks if the environment satisfies the requirements