see #20522 see #21005 - Allow security manager, otherwise it raises a warning in Java 17 and throws an error with Java 18+

See https://bugs.openjdk.java.net/browse/JDK-8271301
See https://bugs.openjdk.java.net/browse/JDK-8270380

git-svn-id: https://josm.openstreetmap.de/svn/trunk@18322 0c6e7542-c601-0410-84e7-c038aed88b3b

Author: don-vip

build.xml

@@ -457,6 +457,7 @@ Build-Date: ${build.tstamp}
 	                    <jvmarg value="${jacocoagent@{testfamily}@{testITsuffix}}" if:set="jacocoagent@{testfamily}@{testITsuffix}" />
 	                    <jvmarg value="-Dfile.encoding=UTF-8"/>
 	                    <jvmarg value="-Djava.locale.providers=SPI,JRE,CLDR" if:set="isJava9" />
+	                    <jvmarg value="-Djava.security.manager=allow" if:set="isJava17" />
 	                    <jvmarg value="-javaagent:${test.dir}/lib/jmockit.jar"/>
 	                    <jvmarg value="-Djunit.jupiter.extensions.autodetection.enabled=true"/>
 	                    <jvmarg value="-Djunit.jupiter.execution.parallel.enabled=true"/>

src/org/openstreetmap/josm/gui/MainApplication.java

@@ -1034,6 +1034,11 @@ private static void updateSystemProperties() {
         }
         // Disable automatic POST retry after 5 minutes, see #17882 / https://bugs.openjdk.java.net/browse/JDK-6382788
         Utils.updateSystemProperty("sun.net.http.retryPost", "false");
+        if (Utils.getJavaVersion() >= 17) {
+            // Allow security manager, otherwise it raises a warning in Java 17 and throws an error with Java 18+
+            // See https://bugs.openjdk.java.net/browse/JDK-8271301 / https://bugs.openjdk.java.net/browse/JDK-8270380
+            Utils.updateSystemProperty("java.security.manager", "allow");
+        }
     }
 
     /**