Prevent StackOverFlowException in metadata processor

Fixes gh-11037

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/context/properties/ConfigurationPropertiesReportEndpointSerializationTests.java

@@ -23,7 +23,6 @@ import java.util.List;
 import java.util.Map;
 
 import com.zaxxer.hikari.HikariDataSource;
-import org.junit.Ignore;
 import org.junit.Test;
 
 import org.springframework.boot.actuate.context.properties.ConfigurationPropertiesReportEndpoint.ApplicationConfigurationProperties;
@@ -115,7 +114,6 @@ public class ConfigurationPropertiesReportEndpointSerializationTests {
 	}
 
 	@Test
-	@Ignore("gh-11037")
 	public void testCycle() {
 		ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 				.withUserConfiguration(CycleConfig.class);
@@ -516,7 +514,7 @@ public class ConfigurationPropertiesReportEndpointSerializationTests {
 
 		@Bean
 		// gh-11037
-		// @ConfigurationProperties(prefix = "cycle")
+		@ConfigurationProperties(prefix = "cycle")
 		public Cycle cycle() {
 			return new Cycle();
 		}

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/main/java/org/springframework/boot/configurationprocessor/ConfigurationMetadataAnnotationProcessor.java

@@ -468,10 +468,23 @@ public class ConfigurationMetadataAnnotationProcessor extends AbstractProcessor
 		if (hasAnnotation(field, nestedConfigurationPropertyAnnotation())) {
 			return true;
 		}
+		if (isCyclePresent(returnType, element)) {
+			return false;
+		}
 		return (isParentTheSame(returnType, element))
 				&& returnType.getKind() != ElementKind.ENUM;
 	}
 
+	private boolean isCyclePresent(Element returnType, Element element) {
+		if (!(element.getEnclosingElement() instanceof TypeElement)) {
+			return false;
+		}
+		if (element.getEnclosingElement().equals(returnType)) {
+			return true;
+		}
+		return isCyclePresent(returnType, element.getEnclosingElement());
+	}
+
 	private boolean isParentTheSame(Element returnType, TypeElement element) {
 		if (returnType == null || element == null) {
 			return false;