Merge branch '6.2.x'

spring-context/src/test/java/org/springframework/context/annotation/BackgroundBootstrapTests.java

@@ -56,6 +56,16 @@ class BackgroundBootstrapTests {
 		ctx.close();
 	}
 
+	@Test
+	@Timeout(5)
+	@EnabledForTestGroups(LONG_RUNNING)
+	void bootstrapWithCircularReference() {
+		ConfigurableApplicationContext ctx = new AnnotationConfigApplicationContext(CircularReferenceBeanConfig.class);
+		ctx.getBean("testBean1", TestBean.class);
+		ctx.getBean("testBean2", TestBean.class);
+		ctx.close();
+	}
+
 	@Test
 	@Timeout(5)
 	@EnabledForTestGroups(LONG_RUNNING)
@@ -138,6 +148,34 @@ class BackgroundBootstrapTests {
 	}
 
 
+	@Configuration(proxyBeanMethods = false)
+	static class CircularReferenceBeanConfig {
+
+		@Bean
+		public TestBean testBean1(ObjectProvider<TestBean> testBean2) {
+			new Thread(testBean2::getObject).start();
+			try {
+				Thread.sleep(1000);
+			}
+			catch (InterruptedException ex) {
+				throw new RuntimeException(ex);
+			}
+			return new TestBean();
+		}
+
+		@Bean
+		public TestBean testBean2(TestBean testBean1) {
+			try {
+				Thread.sleep(2000);
+			}
+			catch (InterruptedException ex) {
+				throw new RuntimeException(ex);
+			}
+			return new TestBean();
+		}
+	}
+
+
 	@Configuration(proxyBeanMethods = false)
 	static class CustomExecutorBeanConfig {