Merge branch '2.4.x'

Closes gh-25348

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/config/InvalidConfigDataPropertyException.java

@@ -43,6 +43,8 @@ public class InvalidConfigDataPropertyException extends ConfigDataException {
 		Map<ConfigurationPropertyName, ConfigurationPropertyName> warnings = new LinkedHashMap<>();
 		warnings.put(ConfigurationPropertyName.of("spring.profiles"),
 				ConfigurationPropertyName.of("spring.config.activate.on-profile"));
+		warnings.put(ConfigurationPropertyName.of("spring.profiles[0]"),
+				ConfigurationPropertyName.of("spring.config.activate.on-profile"));
 		WARNINGS = Collections.unmodifiableMap(warnings);
 	}
 
@@ -50,8 +52,11 @@ public class InvalidConfigDataPropertyException extends ConfigDataException {
 	static {
 		Set<ConfigurationPropertyName> errors = new LinkedHashSet<>();
 		errors.add(Profiles.INCLUDE_PROFILES);
+		errors.add(Profiles.INCLUDE_PROFILES.append("[0]"));
 		errors.add(ConfigurationPropertyName.of(AbstractEnvironment.ACTIVE_PROFILES_PROPERTY_NAME));
+		errors.add(ConfigurationPropertyName.of(AbstractEnvironment.ACTIVE_PROFILES_PROPERTY_NAME + "[0]"));
 		errors.add(ConfigurationPropertyName.of(AbstractEnvironment.DEFAULT_PROFILES_PROPERTY_NAME));
+		errors.add(ConfigurationPropertyName.of(AbstractEnvironment.DEFAULT_PROFILES_PROPERTY_NAME + "[0]"));
 		PROFILE_SPECIFIC_ERRORS = Collections.unmodifiableSet(errors);
 	}
 

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/context/config/ConfigDataEnvironmentPostProcessorIntegrationTests.java

@@ -642,9 +642,10 @@ class ConfigDataEnvironmentPostProcessorIntegrationTests {
 	}
 
 	@Test
-	void runWhenHasIncludedProfilesWithProfileSpecificFileThrowsException() {
-		assertThatExceptionOfType(InvalidConfigDataPropertyException.class).isThrownBy(() -> this.application
-				.run("--spring.config.name=application-include-profiles-in-profile-specific-file"));
+	void runWhenHasIncludedProfilesWithListSyntaxWithProfileSpecificDocumentThrowsException() {
+		assertThatExceptionOfType(InvalidConfigDataPropertyException.class).isThrownBy(() -> this.application.run(
+				"--spring.config.name=application-include-profiles-list-in-profile-specific-file",
+				"--spring.profiles.active=test"));
 	}
 
 	@Test

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/context/config/InvalidConfigDataPropertyExceptionTests.java

@@ -169,6 +169,16 @@ class InvalidConfigDataPropertyExceptionTests {
 				+ "'spring.config.activate.on-profile' [origin: \"spring.profiles\" from property source \"mockProperties\"]");
 	}
 
+	@Test
+	void throwOrWarnWhenHasWarningPropertyWithListSyntaxLogsWarning() {
+		MockPropertySource propertySource = new MockPropertySource();
+		propertySource.setProperty("spring.profiles[0]", "a");
+		ConfigDataEnvironmentContributor contributor = ConfigDataEnvironmentContributor.ofExisting(propertySource);
+		InvalidConfigDataPropertyException.throwOrWarn(this.logger, contributor);
+		verify(this.logger).warn("Property 'spring.profiles[0]' is invalid and should be replaced with "
+				+ "'spring.config.activate.on-profile' [origin: \"spring.profiles[0]\" from property source \"mockProperties\"]");
+	}
+
 	private static class TestConfigDataResource extends ConfigDataResource {
 
 		@Override

spring-boot-project/spring-boot/src/test/resources/application-include-profiles-list-in-profile-specific-file-test.yml

+spring:
+  profiles:
+    include:
+    - p