Update error about unsupported language and API versions

Set first supported version to 1.3
Add property for oldest depecated language version in order to control unsupported ones
Report error on attempts to manually disable language feature from unsupported versions
Update test data, drop compatibility tests for features from unsupported versions

KT-36146 In progress

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -426,6 +426,7 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
 
     private fun HashMap<LanguageFeature, LanguageFeature.State>.configureLanguageFeaturesFromInternalArgs(collector: MessageCollector) {
         val featuresThatForcePreReleaseBinaries = mutableListOf<LanguageFeature>()
+        val disabledFeaturesFromUnsupportedVersions = mutableListOf<LanguageFeature>()
 
         var standaloneSamConversionFeaturePassedExplicitly = false
         var functionReferenceWithDefaultValueFeaturePassedExplicitly = false
@@ -435,6 +436,10 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
                 featuresThatForcePreReleaseBinaries += feature
             }
 
+            if (state == LanguageFeature.State.DISABLED && feature.sinceVersion?.isUnsupported == true) {
+                disabledFeaturesFromUnsupportedVersions += feature
+            }
+
             when (feature) {
                 LanguageFeature.SamConversionPerArgument ->
                     standaloneSamConversionFeaturePassedExplicitly = true
@@ -460,6 +465,14 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
                 "Following manually enabled features will force generation of pre-release binaries: ${featuresThatForcePreReleaseBinaries.joinToString()}"
             )
         }
+
+        if (disabledFeaturesFromUnsupportedVersions.isNotEmpty()) {
+            collector.report(
+                CompilerMessageSeverity.ERROR,
+                "The following features cannot be disabled manually, because the version they first appeared in is no longer " +
+                        "supported:\n${disabledFeaturesFromUnsupportedVersions.joinToString()}"
+            )
+        }
     }
 
     fun toLanguageVersionSettings(collector: MessageCollector): LanguageVersionSettings {
@@ -471,32 +484,77 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
         // (API version cannot be greater than the language version)
         val apiVersion = parseVersion(collector, apiVersion, "API") ?: languageVersion
 
+        checkApiVersionIsNotGreaterThenLanguageVersion(languageVersion, apiVersion, collector)
+        checkLanguageVersionIsStable(languageVersion, collector)
+        checkOutdatedVersions(languageVersion, apiVersion, collector)
+        checkProgressiveMode(languageVersion, collector)
+
+        val languageVersionSettings = LanguageVersionSettingsImpl(
+            languageVersion,
+            ApiVersion.createByLanguageVersion(apiVersion),
+            configureAnalysisFlags(collector),
+            configureLanguageFeatures(collector)
+        )
+
+        checkCoroutines(languageVersionSettings, collector)
+
+        return languageVersionSettings
+    }
+
+    private fun checkApiVersionIsNotGreaterThenLanguageVersion(
+        languageVersion: LanguageVersion,
+        apiVersion: LanguageVersion,
+        collector: MessageCollector
+    ) {
         if (apiVersion > languageVersion) {
             collector.report(
                 CompilerMessageSeverity.ERROR,
                 "-api-version (${apiVersion.versionString}) cannot be greater than -language-version (${languageVersion.versionString})"
             )
         }
+    }
 
+    private fun checkLanguageVersionIsStable(languageVersion: LanguageVersion, collector: MessageCollector) {
         if (!languageVersion.isStable) {
             collector.report(
                 CompilerMessageSeverity.STRONG_WARNING,
-                "Language version ${languageVersion.versionString} is experimental, there are no backwards compatibility guarantees for new language and library features"
+                "Language version ${languageVersion.versionString} is experimental, there are no backwards compatibility guarantees for " +
+                        "new language and library features"
             )
         }
+    }
 
-        val deprecatedVersion = when {
-            languageVersion < LanguageVersion.FIRST_SUPPORTED -> "Language version ${languageVersion.versionString}"
-            apiVersion < LanguageVersion.FIRST_SUPPORTED -> "API version ${apiVersion.versionString}"
+    private fun checkOutdatedVersions(language: LanguageVersion, api: LanguageVersion, collector: MessageCollector) {
+        val (version, versionKind) = findOutdatedVersion(language, api) ?: return
+        when {
+            version.isUnsupported -> {
+                collector.report(
+                    CompilerMessageSeverity.ERROR,
+                    "${versionKind.text} version ${version.versionString} is no longer supported; " +
+                            "please, use version ${LanguageVersion.OLDEST_DEPRECATED.versionString} or greater."
+                )
+            }
+            version.isDeprecated -> {
+                collector.report(
+                    CompilerMessageSeverity.STRONG_WARNING,
+                    "${versionKind.text} version ${version.versionString} is deprecated " +
+                            "and its support will be removed in a future version of Kotlin"
+                )
+            }
+        }
+    }
+
+    private fun findOutdatedVersion(language: LanguageVersion, api: LanguageVersion): Pair<LanguageVersion, VersionKind>? {
+        return when {
+            language.isUnsupported -> language to VersionKind.LANGUAGE
+            api.isUnsupported -> api to VersionKind.API
+            language.isDeprecated -> language to VersionKind.LANGUAGE
+            api.isDeprecated -> api to VersionKind.API
             else -> null
         }
-        if (deprecatedVersion != null) {
-            collector.report(
-                CompilerMessageSeverity.STRONG_WARNING,
-                "$deprecatedVersion is deprecated and its support will be removed in a future version of Kotlin"
-            )
-        }
+    }
 
+    private fun checkProgressiveMode(languageVersion: LanguageVersion, collector: MessageCollector) {
         if (progressiveMode && languageVersion < LanguageVersion.LATEST_STABLE) {
             collector.report(
                 CompilerMessageSeverity.STRONG_WARNING,
@@ -506,14 +564,9 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
                         "or turning off progressive mode."
             )
         }
+    }
 
-        val languageVersionSettings = LanguageVersionSettingsImpl(
-            languageVersion,
-            ApiVersion.createByLanguageVersion(apiVersion),
-            configureAnalysisFlags(collector),
-            configureLanguageFeatures(collector)
-        )
-
+    private fun checkCoroutines(languageVersionSettings: LanguageVersionSettings, collector: MessageCollector) {
         if (languageVersionSettings.supportsFeature(LanguageFeature.ReleaseCoroutines)) {
             if (coroutinesState != DEFAULT) {
                 collector.report(
@@ -522,19 +575,21 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
                 )
             }
         }
+    }
 
-        return languageVersionSettings
+    private enum class VersionKind(val text: String) {
+        LANGUAGE("Language"), API("API")
     }
 
     private fun parseVersion(collector: MessageCollector, value: String?, versionOf: String): LanguageVersion? =
         if (value == null) null
         else LanguageVersion.fromVersionString(value)
-                ?: run {
-                    val versionStrings = LanguageVersion.values().map(LanguageVersion::description)
-                    val message = "Unknown $versionOf version: $value\nSupported $versionOf versions: ${versionStrings.joinToString(", ")}"
-                    collector.report(CompilerMessageSeverity.ERROR, message, null)
-                    null
-                }
+            ?: run {
+                val versionStrings = LanguageVersion.values().map(LanguageVersion::description)
+                val message = "Unknown $versionOf version: $value\nSupported $versionOf versions: ${versionStrings.joinToString(", ")}"
+                collector.report(CompilerMessageSeverity.ERROR, message, null)
+                null
+            }
 
     // Used only for serialize and deserialize settings. Don't use in other places!
     class DummyImpl : CommonCompilerArguments()

compiler/testData/cli/js/languageVersion.args

@@ -2,4 +2,4 @@ $TESTDATA_DIR$/languageVersion.kt
 -output
 $TEMP_DIR$/out.js
 -language-version
-1.2
+1.3

compiler/testData/cli/js/languageVersion.kt

@@ -1,5 +1,9 @@
 package test
 
-annotation class Outer {
-    class Nested
+fun test() {
+    while (true) {
+        when {
+            true -> break
+        }
+    }
 }

compiler/testData/cli/js/languageVersion.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/js/languageVersion.kt:4:5: error: members are not allowed in annotation class
-    class Nested
-    ^
+compiler/testData/cli/js/languageVersion.kt:6:21: error: 'break' and 'continue' are not allowed in 'when' statements. Consider using labels to continue/break from the outer loop
+            true -> break
+                    ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/apiAndLanguageVersionsUnsupported.args

@@ -0,0 +1,7 @@
+$TESTDATA_DIR$/apiAndLanguageVersionsUnsupported.kt
+-d
+$TEMP_DIR$
+-language-version
+1.1
+-api-version
+1.0

compiler/testData/cli/jvm/apiAndLanguageVersionsUnsupported.kt

@@ -0,0 +1 @@
+class Test

compiler/testData/cli/jvm/apiAndLanguageVersionsUnsupported.out

@@ -0,0 +1,2 @@
+error: language version 1.1 is no longer supported; please, use version 1.2 or greater.
+COMPILATION_ERROR

compiler/testData/cli/jvm/apiVersion.kt

@@ -1,3 +1,14 @@
-fun test() {
-    ""::class.sealedSubclasses
+class A
+
+fun foo(
+    p00: A, p01: A, p02: A, p03: A, p04: A, p05: A, p06: A, p07: A, p08: A, p09: A,
+    p10: A, p11: A, p12: A, p13: A, p14: A, p15: A, p16: A, p17: A, p18: A, p19: A,
+    p20: A, p21: A, p22: A, p23: A, p24: A, p25: A, p26: A, p27: A, p28: A, p29: A
+) {}
+
+fun bar(x: Any) {}
+
+fun test(vararg x: Function30<*, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, Unit>) {
+    bar(::foo)
+    bar(x)
 }

compiler/testData/cli/jvm/apiVersion.out

@@ -1,4 +1,8 @@
-compiler/testData/cli/jvm/apiVersion.kt:2:15: error: unresolved reference: sealedSubclasses
-    ""::class.sealedSubclasses
-              ^
+warning: API version 1.2 is deprecated and its support will be removed in a future version of Kotlin
+compiler/testData/cli/jvm/apiVersion.kt:11:20: error: the feature "function types with big arity" is only available since API version 1.3
+fun test(vararg x: Function30<*, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, Unit>) {
+                   ^
+compiler/testData/cli/jvm/apiVersion.kt:12:9: error: the feature "function types with big arity" is only available since API version 1.3
+    bar(::foo)
+        ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/apiVersion1.0.args

@@ -1,7 +0,0 @@
-$TESTDATA_DIR$/apiVersion1.0.kt
--d
-$TEMP_DIR$
--language-version
-1.1
--api-version
-1.0

compiler/testData/cli/jvm/apiVersion1.0.kt

@@ -1,16 +0,0 @@
-typealias Foo = Int
-
-sealed class A
-data class B(val foo: Int): A()
-
-inline val f get() = ""
-
-suspend fun test() {
-    ""::class
-    ""::toString
-
-    Foo::class
-    Foo::toString
-
-    val b by lazy { "" }
-}

compiler/testData/cli/jvm/apiVersion1.0.out

@@ -1,14 +0,0 @@
-warning: language version 1.1 is deprecated and its support will be removed in a future version of Kotlin
-compiler/testData/cli/jvm/apiVersion1.0.kt:8:1: error: the feature "coroutines" is only available since API version 1.1 (see: https://kotlinlang.org/docs/diagnostics/experimental-coroutines)
-suspend fun test() {
-^
-compiler/testData/cli/jvm/apiVersion1.0.kt:9:5: error: the feature "bound callable references" is only available since API version 1.1
-    ""::class
-    ^
-compiler/testData/cli/jvm/apiVersion1.0.kt:10:5: error: the feature "bound callable references" is only available since API version 1.1
-    ""::toString
-    ^
-compiler/testData/cli/jvm/apiVersion1.0.kt:15:11: error: the feature "local delegated properties" is only available since API version 1.1
-    val b by lazy { "" }
-          ^
-COMPILATION_ERROR

compiler/testData/cli/jvm/apiVersionAndSinceNewerKotlin.out

@@ -1,3 +1,4 @@
+warning: API version 1.2 is deprecated and its support will be removed in a future version of Kotlin
 compiler/testData/cli/jvm/apiVersionAndSinceNewerKotlin.kt:4:1: warning: the version is greater than the specified API version 1.2
 @SinceKotlin("1.3")
 ^

compiler/testData/cli/jvm/apiVersionGreaterThanLanguage.args

@@ -2,6 +2,6 @@ $TESTDATA_DIR$/apiVersion.kt
 -d
 $TEMP_DIR$
 -api-version
-1.3
+1.4
 -language-version
-1.2
+1.3

compiler/testData/cli/jvm/apiVersionGreaterThanLanguage.out

@@ -1,2 +1,2 @@
-error: -api-version (1.3) cannot be greater than -language-version (1.2)
+error: -api-version (1.4) cannot be greater than -language-version (1.3)
 COMPILATION_ERROR

compiler/testData/cli/jvm/apiVersionLessThanLanguage.out

@@ -1,4 +1,8 @@
-compiler/testData/cli/jvm/apiVersion.kt:2:15: error: unresolved reference: sealedSubclasses
-    ""::class.sealedSubclasses
-              ^
+warning: API version 1.2 is deprecated and its support will be removed in a future version of Kotlin
+compiler/testData/cli/jvm/apiVersion.kt:11:20: error: the feature "function types with big arity" is only available since API version 1.3
+fun test(vararg x: Function30<*, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, Unit>) {
+                   ^
+compiler/testData/cli/jvm/apiVersion.kt:12:9: error: the feature "function types with big arity" is only available since API version 1.3
+    bar(::foo)
+        ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/apiVersionLessThanLanguageUsingArgfile.out

@@ -1,4 +1,8 @@
-compiler/testData/cli/jvm/apiVersion.kt:2:15: error: unresolved reference: sealedSubclasses
-    ""::class.sealedSubclasses
-              ^
+warning: API version 1.2 is deprecated and its support will be removed in a future version of Kotlin
+compiler/testData/cli/jvm/apiVersion.kt:11:20: error: the feature "function types with big arity" is only available since API version 1.3
+fun test(vararg x: Function30<*, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, Unit>) {
+                   ^
+compiler/testData/cli/jvm/apiVersion.kt:12:9: error: the feature "function types with big arity" is only available since API version 1.3
+    bar(::foo)
+        ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/apiVersionUnsupported.args

@@ -0,0 +1,5 @@
+$TESTDATA_DIR$/apiVersionUnsupported.kt
+-d
+$TEMP_DIR$
+-api-version
+1.1

compiler/testData/cli/jvm/apiVersionUnsupported.kt

@@ -0,0 +1 @@
+class Test

compiler/testData/cli/jvm/apiVersionUnsupported.out

@@ -0,0 +1,2 @@
+error: API version 1.1 is no longer supported; please, use version 1.2 or greater.
+COMPILATION_ERROR

compiler/testData/cli/jvm/argfileWithEscaping.out

@@ -1,6 +1,10 @@
 warning: flag is not supported by this version of the compiler: -Xdouble ' quote ' escaped " sequence /
 warning: flag is not supported by this version of the compiler: -Xsingle " quote " escaped ' sequence /
-compiler/testData/cli/jvm/apiVersion.kt:2:15: error: unresolved reference: sealedSubclasses
-    ""::class.sealedSubclasses
-              ^
+warning: API version 1.2 is deprecated and its support will be removed in a future version of Kotlin
+compiler/testData/cli/jvm/apiVersion.kt:11:20: error: the feature "function types with big arity" is only available since API version 1.3
+fun test(vararg x: Function30<*, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, Unit>) {
+                   ^
+compiler/testData/cli/jvm/apiVersion.kt:12:9: error: the feature "function types with big arity" is only available since API version 1.3
+    bar(::foo)
+        ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/deprecatedApiVersion.args

@@ -2,4 +2,4 @@ $TESTDATA_DIR$/simple.kt
 -d
 $TEMP_DIR$
 -api-version
-1.1
+1.2

compiler/testData/cli/jvm/deprecatedApiVersion.out

@@ -1,2 +1,2 @@
-warning: API version 1.1 is deprecated and its support will be removed in a future version of Kotlin
+warning: API version 1.2 is deprecated and its support will be removed in a future version of Kotlin
 OK

compiler/testData/cli/jvm/deprecatedLanguageUnsupportedApi.args

@@ -0,0 +1,7 @@
+$TESTDATA_DIR$/deprecatedLanguageUnsupportedApi.kt
+-d
+$TEMP_DIR$
+-language-version
+1.2
+-api-version
+1.1

compiler/testData/cli/jvm/deprecatedLanguageUnsupportedApi.kt

@@ -0,0 +1 @@
+class Test

compiler/testData/cli/jvm/deprecatedLanguageUnsupportedApi.out

@@ -0,0 +1,2 @@
+error: API version 1.1 is no longer supported; please, use version 1.2 or greater.
+COMPILATION_ERROR

compiler/testData/cli/jvm/deprecatedLanguageVersion.args

@@ -2,4 +2,4 @@ $TESTDATA_DIR$/simple.kt
 -d
 $TEMP_DIR$
 -language-version
-1.1
+1.2

compiler/testData/cli/jvm/deprecatedLanguageVersion.out

@@ -1,2 +1,2 @@
-warning: language version 1.1 is deprecated and its support will be removed in a future version of Kotlin
+warning: language version 1.2 is deprecated and its support will be removed in a future version of Kotlin
 OK

compiler/testData/cli/jvm/disabledFeatureFromUnsupportedVersion.args

@@ -0,0 +1,5 @@
+$TESTDATA_DIR$/disabledFeatureInUnsupportedVersion.kt
+-XXLanguage\:-TypeAliases
+-XXLanguage\:-BoundCallableReferences
+-d
+$TEMP_DIR$

compiler/testData/cli/jvm/disabledFeatureFromUnsupportedVersion.kt

@@ -0,0 +1 @@
+class Test

compiler/testData/cli/jvm/disabledFeatureFromUnsupportedVersion.out

@@ -0,0 +1,13 @@
+warning: ATTENTION!
+This build uses unsafe internal compiler arguments:
+
+-XXLanguage:-TypeAliases
+-XXLanguage:-BoundCallableReferences
+
+This mode is not recommended for production use,
+as no stability/compatibility guarantees are given on
+compiler or generated code. Use it at your own risk!
+
+error: the following features cannot be disabled manually, because the version they first appeared in is no longer supported:
+TypeAliases, BoundCallableReferences
+COMPILATION_ERROR

compiler/testData/cli/jvm/internalArgEnableLanguageFeature.args

@@ -1,6 +1,6 @@
-$TESTDATA_DIR$/legacySmartCastsAfterTry.kt
+$TESTDATA_DIR$/variableInWhenSubject.kt
 -d
 $TEMP_DIR$
 -language-version
-1.1
--XXLanguage\:+SoundSmartCastsAfterTry
+1.2
+-XXLanguage\:+VariableDeclarationInWhenSubject

compiler/testData/cli/jvm/internalArgEnableLanguageFeature.out

@@ -1,14 +1,11 @@
 warning: ATTENTION!
 This build uses unsafe internal compiler arguments:
 
--XXLanguage:+SoundSmartCastsAfterTry
+-XXLanguage:+VariableDeclarationInWhenSubject
 
 This mode is not recommended for production use,
 as no stability/compatibility guarantees are given on
 compiler or generated code. Use it at your own risk!
 
-warning: language version 1.1 is deprecated and its support will be removed in a future version of Kotlin
-compiler/testData/cli/jvm/legacySmartCastsAfterTry.kt:8:9: error: only safe (?.) or non-null asserted (!!.) calls are allowed on a nullable receiver of type String?
-    some.length
-        ^
-COMPILATION_ERROR
+warning: language version 1.2 is deprecated and its support will be removed in a future version of Kotlin
+OK

compiler/testData/cli/jvm/internalArgNoWarningForEnablingBugfix.args

@@ -2,5 +2,5 @@ $TESTDATA_DIR$/simple.kt
 -d
 $TEMP_DIR$
 -language-version
-1.2
--XXLanguage\:+ProhibitDataClassesOverridingCopy
+1.3
+-XXLanguage\:+RestrictReturnStatementTarget

compiler/testData/cli/jvm/kt19628_12.out

@@ -1 +1,2 @@
+warning: language version 1.2 is deprecated and its support will be removed in a future version of Kotlin
 OK

compiler/testData/cli/jvm/languageVersion.args

@@ -2,4 +2,4 @@ $TESTDATA_DIR$/languageVersion.kt
 -d
 $TEMP_DIR$
 -language-version
-1.2
+1.3

compiler/testData/cli/jvm/languageVersion.kt

@@ -1,5 +1,9 @@
 package test
 
-annotation class Outer {
-    class Nested
+fun test() {
+    while (true) {
+        when {
+            true -> break
+        }
+    }
 }

compiler/testData/cli/jvm/languageVersion.out

@@ -1,4 +1,4 @@
-compiler/testData/cli/jvm/languageVersion.kt:4:5: error: members are not allowed in annotation class
-    class Nested
-    ^
+compiler/testData/cli/jvm/languageVersion.kt:6:21: error: 'break' and 'continue' are not allowed in 'when' statements. Consider using labels to continue/break from the outer loop
+            true -> break
+                    ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/languageVersionUnsupported.args

@@ -0,0 +1,5 @@
+$TESTDATA_DIR$/languageVersionUnsupported.kt
+-d
+$TEMP_DIR$
+-language-version
+1.1

compiler/testData/cli/jvm/languageVersionUnsupported.kt

@@ -0,0 +1 @@
+class Test

compiler/testData/cli/jvm/languageVersionUnsupported.out

@@ -0,0 +1,2 @@
+error: language version 1.1 is no longer supported; please, use version 1.2 or greater.
+COMPILATION_ERROR

compiler/testData/cli/jvm/mixingArgfilesAndUsualArgs.out

@@ -1,4 +1,8 @@
-compiler/testData/cli/jvm/apiVersion.kt:2:15: error: unresolved reference: sealedSubclasses
-    ""::class.sealedSubclasses
-              ^
+warning: API version 1.2 is deprecated and its support will be removed in a future version of Kotlin
+compiler/testData/cli/jvm/apiVersion.kt:11:20: error: the feature "function types with big arity" is only available since API version 1.3
+fun test(vararg x: Function30<*, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, *, Unit>) {
+                   ^
+compiler/testData/cli/jvm/apiVersion.kt:12:9: error: the feature "function types with big arity" is only available since API version 1.3
+    bar(::foo)
+        ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/progressive/dataClassOverridingCopy.kt

@@ -1,5 +0,0 @@
-interface WithCopy<T> {
-    fun copy(str: T): WithCopy<T>
-}
-
-data class Test(val str: String): WithCopy<String>

compiler/testData/cli/jvm/progressive/nonConstValueAsVarargInAnnotation.kt

@@ -1,6 +0,0 @@
-val nonConstArray = longArrayOf(0)
-
-annotation class Anno(vararg val value: Long)
-
-@Anno(value = nonConstArray)
-fun foo1() {}

compiler/testData/cli/jvm/progressive/tailrecOnVirtualMember.kt

@@ -0,0 +1,3 @@
+open class A {
+    tailrec open fun foo(x: Int) {}
+}

compiler/testData/cli/jvm/progressive/typeParametersInAnonymousObjects.kt

@@ -0,0 +1,3 @@
+fun test() {
+    val x = object<T> { }
+}

compiler/testData/cli/jvm/progressive/valReassignmentViaBackingField.kt

@@ -1,5 +0,0 @@
-val my: Int = 1
-    get() {
-        field++
-        return field
-    }

compiler/testData/cli/jvm/progressiveModeOff.args

@@ -2,4 +2,4 @@ $TESTDATA_DIR$/progressive
 -d
 $TEMP_DIR$
 -language-version
-1.2
+1.3

compiler/testData/cli/jvm/progressiveModeOff.out

@@ -1,10 +1,13 @@
-compiler/testData/cli/jvm/progressive/dataClassOverridingCopy.kt:5:1: warning: function 'copy' generated for the data class has default values for parameters, and conflicts with member of supertype 'WithCopy'
-data class Test(val str: String): WithCopy<String>
-^
-compiler/testData/cli/jvm/progressive/nonConstValueAsVarargInAnnotation.kt:5:15: warning: an annotation argument must be a compile-time constant
-@Anno(value = nonConstArray)
-              ^
-compiler/testData/cli/jvm/progressive/valReassignmentViaBackingField.kt:3:9: warning: reassignment of read-only property via backing field is deprecated
-        field++
+compiler/testData/cli/jvm/progressive/tailrecOnVirtualMember.kt:2:5: warning: a function is marked as tail-recursive but no tail calls are found
+    tailrec open fun foo(x: Int) {}
+    ^
+compiler/testData/cli/jvm/progressive/tailrecOnVirtualMember.kt:2:5: warning: tailrec on open members is deprecated
+    tailrec open fun foo(x: Int) {}
+    ^
+compiler/testData/cli/jvm/progressive/typeParametersInAnonymousObjects.kt:2:9: warning: variable 'x' is never used
+    val x = object<T> { }
         ^
+compiler/testData/cli/jvm/progressive/typeParametersInAnonymousObjects.kt:2:19: warning: type parameters for anonymous objects are deprecated
+    val x = object<T> { }
+                  ^
 OK

compiler/testData/cli/jvm/progressiveModeOn.out

@@ -1,10 +1,7 @@
-compiler/testData/cli/jvm/progressive/dataClassOverridingCopy.kt:5:1: error: function 'copy' generated for the data class has default values for parameters, and conflicts with member of supertype 'WithCopy'
-data class Test(val str: String): WithCopy<String>
-^
-compiler/testData/cli/jvm/progressive/nonConstValueAsVarargInAnnotation.kt:5:15: error: an annotation argument must be a compile-time constant
-@Anno(value = nonConstArray)
-              ^
-compiler/testData/cli/jvm/progressive/valReassignmentViaBackingField.kt:3:9: error: reassignment of read-only property via backing field
-        field++
-        ^
+compiler/testData/cli/jvm/progressive/tailrecOnVirtualMember.kt:2:5: error: tailrec is not allowed on open members
+    tailrec open fun foo(x: Int) {}
+    ^
+compiler/testData/cli/jvm/progressive/typeParametersInAnonymousObjects.kt:2:19: error: type parameters are not allowed for objects
+    val x = object<T> { }
+                  ^
 COMPILATION_ERROR

compiler/testData/cli/jvm/releaseCoroutinesApiVersion1.2.out

@@ -1,3 +1,4 @@
+warning: API version 1.2 is deprecated and its support will be removed in a future version of Kotlin
 compiler/testData/cli/jvm/releaseCoroutinesApiVersion1.2.kt:1:1: error: unsupported [cannot use release coroutines with api version less than 1.3]
 suspend fun dummy() {}
 ^

compiler/testData/cli/jvm/unsupportedTypeAlias.args

@@ -1,5 +0,0 @@
--language-version
-1.0
-$TESTDATA_DIR$/unsupportedTypeAlias.kt
--d
-$TEMP_DIR$

compiler/testData/cli/jvm/unsupportedTypeAlias.kt

@@ -1,3 +0,0 @@
-package test
-
-typealias Unused = String

compiler/testData/cli/jvm/unsupportedTypeAlias.out

@@ -1,5 +0,0 @@
-warning: language version 1.0 is deprecated and its support will be removed in a future version of Kotlin
-compiler/testData/cli/jvm/unsupportedTypeAlias.kt:3:1: error: the feature "type aliases" is only available since language version 1.1
-typealias Unused = String
-^
-COMPILATION_ERROR

compiler/testData/cli/jvm/variableInWhenSubject.args

@@ -0,0 +1,6 @@
+$TESTDATA_DIR$/variableInWhenSubject.kt
+-d
+$TEMP_DIR$
+-language-version
+1.2
+-XXLanguage\:+VariableDeclarationInWhenSubject

compiler/testData/cli/jvm/variableInWhenSubject.kt

@@ -0,0 +1,5 @@
+fun test(s: String?) =
+    when (val v = s) {
+        null -> ""
+        else -> v
+    }

compiler/testData/cli/jvm/variableInWhenSubject.out

@@ -0,0 +1,11 @@
+warning: ATTENTION!
+This build uses unsafe internal compiler arguments:
+
+-XXLanguage:+VariableDeclarationInWhenSubject
+
+This mode is not recommended for production use,
+as no stability/compatibility guarantees are given on
+compiler or generated code. Use it at your own risk!
+
+warning: language version 1.2 is deprecated and its support will be removed in a future version of Kotlin
+OK

compiler/testData/compileKotlinAgainstCustomBinaries/obsoleteInlineSuspend/library/a.kt

@@ -1,31 +0,0 @@
-package library
-
-import kotlin.coroutines.experimental.*
-
-var continuation: Continuation<Unit>? = null
-val sb = java.lang.StringBuilder()
-
-fun append(s: String) { sb.append(s) }
-
-val libraryResult: String get() = sb.toString()
-
-// this is an inline tail-suspend function that should work properly despite being compiler by
-// compiler before 1.1.4 version that did not include suspension marks into bytecode.
-// In order to test that it works properly it shall actually suspend during its execution
-inline suspend fun foo(block: () -> Unit) {
-    append("(foo)")
-    block()
-    return suspendCoroutine<Unit> { continuation = it }
-}
-
-suspend fun bar() {
-    append("(bar)")
-    return suspendCoroutine<Unit> { continuation = it }
-}
-
-fun resumeLibrary() {
-    continuation?.let {
-        continuation = null
-        it.resume(Unit)
-    }
-}

compiler/testData/compileKotlinAgainstCustomBinaries/obsoleteInlineSuspend/output.txt

@@ -1 +0,0 @@
-OK

compiler/testData/compileKotlinAgainstCustomBinaries/obsoleteInlineSuspend/source.kt

@@ -1,36 +0,0 @@
-import library.*
-import kotlin.coroutines.experimental.*
-
-suspend fun test() {
-    append("[foo]")
-    foo { // we are inlining foo here
-        append("(block)")
-    }
-    append("[bar]")
-    bar() // and invoking suspending function bar
-    append("[test]")
-}
-
-fun runBlockingLibrary(block: suspend () -> Unit): String {
-    var done = false
-    block.startCoroutine(object : Continuation<Unit> {
-        override val context: CoroutineContext = EmptyCoroutineContext
-        override fun resume(value: Unit) { done = true }
-        override fun resumeWithException(exception: Throwable) { throw exception }
-    })
-    var resumeCounter = 0
-    while (!done) {
-        resumeCounter++
-        resumeLibrary()
-    }
-    return "$libraryResult:resumes=$resumeCounter"
-}
-
-// Retruns array of expected and received string
-fun run(): Array<String> {
-    val result = runBlockingLibrary {
-        test()
-    }
-    return arrayOf("[foo](foo)(block)[bar](bar)[test]:resumes=2", result)
-}
-

compiler/testData/compileKotlinAgainstCustomBinaries/releaseCoroutineCallFromExperimental/output.txt

@@ -1,3 +1,4 @@
+warning: language version 1.2 is deprecated and its support will be removed in a future version of Kotlin
 compiler/testData/compileKotlinAgainstCustomBinaries/releaseCoroutineCallFromExperimental/experimental.kt:2:5: error: 'dummy(): Unit' is only available since Kotlin 1.3 and cannot be used in Kotlin 1.2
     dummy()
     ^

compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/output.txt

@@ -1,37 +1,37 @@
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:13: error: 'A' is only available since Kotlin 42.33 and cannot be used in Kotlin 1.3. This declaration is only supported since Kotlin 42.33
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:13: error: 'A' is only available since Kotlin 42.33 and cannot be used in Kotlin 1.4. This declaration is only supported since Kotlin 42.33
 fun test(a: A): TA {
             ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:13: error: 'A' is only available since Kotlin 40.34 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:13: error: 'A' is only available since Kotlin 40.34 and cannot be used in Kotlin 1.4
 fun test(a: A): TA {
             ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:13: error: 'A' is only available since Kotlin 45.35 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:13: error: 'A' is only available since Kotlin 45.35 and cannot be used in Kotlin 1.4
 fun test(a: A): TA {
             ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:17: error: 'typealias TA = String' is only available since Kotlin 42.33 and cannot be used in Kotlin 1.3. This declaration is only supported since Kotlin 42.33
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:17: error: 'typealias TA = String' is only available since Kotlin 42.33 and cannot be used in Kotlin 1.4. This declaration is only supported since Kotlin 42.33
 fun test(a: A): TA {
                 ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:17: error: 'typealias TA = String' is only available since Kotlin 40.34 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:17: error: 'typealias TA = String' is only available since Kotlin 40.34 and cannot be used in Kotlin 1.4
 fun test(a: A): TA {
                 ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:17: error: 'typealias TA = String' is only available since Kotlin 45.35 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:3:17: error: 'typealias TA = String' is only available since Kotlin 45.35 and cannot be used in Kotlin 1.4
 fun test(a: A): TA {
                 ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:4:5: error: 'f(): Unit' is only available since Kotlin 42.33 and cannot be used in Kotlin 1.3. This declaration is only supported since Kotlin 42.33
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:4:5: error: 'f(): Unit' is only available since Kotlin 42.33 and cannot be used in Kotlin 1.4. This declaration is only supported since Kotlin 42.33
     f()
     ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:4:5: error: 'f(): Unit' is only available since Kotlin 40.34 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:4:5: error: 'f(): Unit' is only available since Kotlin 40.34 and cannot be used in Kotlin 1.4
     f()
     ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:4:5: error: 'f(): Unit' is only available since Kotlin 45.35 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:4:5: error: 'f(): Unit' is only available since Kotlin 45.35 and cannot be used in Kotlin 1.4
     f()
     ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:5:12: error: 'p: String' is only available since Kotlin 42.33 and cannot be used in Kotlin 1.3. This declaration is only supported since Kotlin 42.33
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:5:12: error: 'p: String' is only available since Kotlin 42.33 and cannot be used in Kotlin 1.4. This declaration is only supported since Kotlin 42.33
     return p
            ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:5:12: error: 'p: String' is only available since Kotlin 40.34 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:5:12: error: 'p: String' is only available since Kotlin 40.34 and cannot be used in Kotlin 1.4
     return p
            ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:5:12: error: 'p: String' is only available since Kotlin 45.35 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlin/source.kt:5:12: error: 'p: String' is only available since Kotlin 45.35 and cannot be used in Kotlin 1.4
     return p
            ^
 COMPILATION_ERROR

compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClasses/output.txt

@@ -1,7 +1,7 @@
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClasses/source.kt:3:19: error: 'Nested' is only available since Kotlin 1.44 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClasses/source.kt:3:19: error: 'Nested' is only available since Kotlin 1.44 and cannot be used in Kotlin 1.4
 fun test(a: Outer.Nested) {
                   ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClasses/source.kt:4:7: error: 'f(): Unit' is only available since Kotlin 1.88 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClasses/source.kt:4:7: error: 'f(): Unit' is only available since Kotlin 1.88 and cannot be used in Kotlin 1.4
     a.f()
       ^
 COMPILATION_ERROR

compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14/output.txt

@@ -1,7 +1,7 @@
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14/source.kt:3:19: error: 'Nested' is only available since Kotlin 1.44 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14/source.kt:3:19: error: 'Nested' is only available since Kotlin 1.44 and cannot be used in Kotlin 1.4
 fun test(a: Outer.Nested) {
                   ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14/source.kt:4:7: error: 'f(): Unit' is only available since Kotlin 1.88 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14/source.kt:4:7: error: 'f(): Unit' is only available since Kotlin 1.88 and cannot be used in Kotlin 1.4
     a.f()
       ^
 COMPILATION_ERROR

compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14Js/output.txt

@@ -1,7 +1,7 @@
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14Js/source.kt:3:19: error: 'Nested' is only available since Kotlin 1.44 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14Js/source.kt:3:19: error: 'Nested' is only available since Kotlin 1.44 and cannot be used in Kotlin 1.4
 fun test(a: Outer.Nested) {
                   ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14Js/source.kt:4:7: error: 'f(): Unit' is only available since Kotlin 1.88 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesAgainst14Js/source.kt:4:7: error: 'f(): Unit' is only available since Kotlin 1.88 and cannot be used in Kotlin 1.4
     a.f()
       ^
 COMPILATION_ERROR

compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesJs/output.txt

@@ -1,7 +1,7 @@
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesJs/source.kt:3:19: error: 'Nested' is only available since Kotlin 1.44 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesJs/source.kt:3:19: error: 'Nested' is only available since Kotlin 1.44 and cannot be used in Kotlin 1.4
 fun test(a: Outer.Nested) {
                   ^
-compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesJs/source.kt:4:7: error: 'f(): Unit' is only available since Kotlin 1.88 and cannot be used in Kotlin 1.3
+compiler/testData/compileKotlinAgainstCustomBinaries/requireKotlinInNestedClassesJs/source.kt:4:7: error: 'f(): Unit' is only available since Kotlin 1.88 and cannot be used in Kotlin 1.4
     a.f()
       ^
 COMPILATION_ERROR

compiler/testData/compileKotlinAgainstCustomBinaries/typeAliasesAreInvisibleInCompatibilityMode/library/typeAliases.kt

@@ -1,11 +0,0 @@
-package test
-
-typealias Str = String
-typealias L<T> = List<T>
-
-class Klass {
-    @Suppress("TOPLEVEL_TYPEALIASES_ONLY")
-    typealias Nested = Z
-
-    class Z
-}

compiler/testData/compileKotlinAgainstCustomBinaries/typeAliasesAreInvisibleInCompatibilityMode/main.kt

@@ -1,8 +0,0 @@
-import test.*
-import test.Str
-
-fun use(
-        str: Str,
-        l: L<Str>,
-        nested: Klass.Nested
-) {}

compiler/testData/compileKotlinAgainstCustomBinaries/typeAliasesAreInvisibleInCompatibilityMode/output.txt

@@ -1,17 +0,0 @@
-warning: language version 1.0 is deprecated and its support will be removed in a future version of Kotlin
-compiler/testData/compileKotlinAgainstCustomBinaries/typeAliasesAreInvisibleInCompatibilityMode/main.kt:2:13: error: unresolved reference: Str
-import test.Str
-            ^
-compiler/testData/compileKotlinAgainstCustomBinaries/typeAliasesAreInvisibleInCompatibilityMode/main.kt:5:14: error: unresolved reference: Str
-        str: Str,
-             ^
-compiler/testData/compileKotlinAgainstCustomBinaries/typeAliasesAreInvisibleInCompatibilityMode/main.kt:6:12: error: unresolved reference: L
-        l: L<Str>,
-           ^
-compiler/testData/compileKotlinAgainstCustomBinaries/typeAliasesAreInvisibleInCompatibilityMode/main.kt:6:14: error: unresolved reference: Str
-        l: L<Str>,
-             ^
-compiler/testData/compileKotlinAgainstCustomBinaries/typeAliasesAreInvisibleInCompatibilityMode/main.kt:7:23: error: unresolved reference: Nested
-        nested: Klass.Nested
-                      ^
-COMPILATION_ERROR

compiler/testData/integration/ant/jvm/languageVersion/build.log.expected

@@ -3,9 +3,9 @@ Buildfile: [TestData]/build.xml
 
 build:
   [kotlinc] Compiling [[TestData]/main.kt] => [[Temp]/hello.jar]
-  [kotlinc] [TestData]/main.kt:2:5: error: members are not allowed in annotation class
-  [kotlinc]     class Nested
-  [kotlinc]     ^
+  [kotlinc] [TestData]/main.kt:4:21: error: 'break' and 'continue' are not allowed in 'when' statements. Consider using labels to continue/break from the outer loop
+  [kotlinc]             true -> break
+  [kotlinc]                     ^
 
 ERR:
 

compiler/testData/integration/ant/jvm/languageVersion/build.xml

@@ -3,7 +3,7 @@
 
     <target name="build">
         <kotlinc src="${test.data}/main.kt" output="${temp}/hello.jar">
-            <compilerarg line="-language-version 1.2"/>
+            <compilerarg line="-language-version 1.3"/>
         </kotlinc>
     </target>
 </project>

compiler/testData/integration/ant/jvm/languageVersion/main.kt

@@ -1,3 +1,7 @@
-annotation class Outer {
-    class Nested
+fun test() {
+    while (true) {
+        when {
+            true -> break
+        }
+    }
 }

compiler/tests/org/jetbrains/kotlin/cli/CliTestGenerated.java

@@ -30,16 +30,16 @@ public class CliTestGenerated extends AbstractCliTest {
             KotlinTestUtils.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/cli/jvm"), Pattern.compile("^(.+)\\.args$"), null, false);
         }
 
+        @TestMetadata("apiAndLanguageVersionsUnsupported.args")
+        public void testApiAndLanguageVersionsUnsupported() throws Exception {
+            runTest("compiler/testData/cli/jvm/apiAndLanguageVersionsUnsupported.args");
+        }
+
         @TestMetadata("apiVersion.args")
         public void testApiVersion() throws Exception {
             runTest("compiler/testData/cli/jvm/apiVersion.args");
         }
 
-        @TestMetadata("apiVersion1.0.args")
-        public void testApiVersion1_0() throws Exception {
-            runTest("compiler/testData/cli/jvm/apiVersion1.0.args");
-        }
-
         @TestMetadata("apiVersionAndSinceNewerKotlin.args")
         public void testApiVersionAndSinceNewerKotlin() throws Exception {
             runTest("compiler/testData/cli/jvm/apiVersionAndSinceNewerKotlin.args");
@@ -65,6 +65,11 @@ public class CliTestGenerated extends AbstractCliTest {
             runTest("compiler/testData/cli/jvm/apiVersionLessThanLanguageUsingArgfile.args");
         }
 
+        @TestMetadata("apiVersionUnsupported.args")
+        public void testApiVersionUnsupported() throws Exception {
+            runTest("compiler/testData/cli/jvm/apiVersionUnsupported.args");
+        }
+
         @TestMetadata("argfileWithEmptyArgument.args")
         public void testArgfileWithEmptyArgument() throws Exception {
             runTest("compiler/testData/cli/jvm/argfileWithEmptyArgument.args");
@@ -160,6 +165,11 @@ public class CliTestGenerated extends AbstractCliTest {
             runTest("compiler/testData/cli/jvm/deprecatedApiVersion.args");
         }
 
+        @TestMetadata("deprecatedLanguageUnsupportedApi.args")
+        public void testDeprecatedLanguageUnsupportedApi() throws Exception {
+            runTest("compiler/testData/cli/jvm/deprecatedLanguageUnsupportedApi.args");
+        }
+
         @TestMetadata("deprecatedLanguageVersion.args")
         public void testDeprecatedLanguageVersion() throws Exception {
             runTest("compiler/testData/cli/jvm/deprecatedLanguageVersion.args");
@@ -170,6 +180,11 @@ public class CliTestGenerated extends AbstractCliTest {
             runTest("compiler/testData/cli/jvm/diagnosticsOrder.args");
         }
 
+        @TestMetadata("disabledFeatureFromUnsupportedVersion.args")
+        public void testDisabledFeatureFromUnsupportedVersion() throws Exception {
+            runTest("compiler/testData/cli/jvm/disabledFeatureFromUnsupportedVersion.args");
+        }
+
         @TestMetadata("duplicateSources.args")
         public void testDuplicateSources() throws Exception {
             runTest("compiler/testData/cli/jvm/duplicateSources.args");
@@ -480,6 +495,11 @@ public class CliTestGenerated extends AbstractCliTest {
             runTest("compiler/testData/cli/jvm/languageVersionInvalid.args");
         }
 
+        @TestMetadata("languageVersionUnsupported.args")
+        public void testLanguageVersionUnsupported() throws Exception {
+            runTest("compiler/testData/cli/jvm/languageVersionUnsupported.args");
+        }
+
         @TestMetadata("legacySmartCastsAfterTry.args")
         public void testLegacySmartCastsAfterTry() throws Exception {
             runTest("compiler/testData/cli/jvm/legacySmartCastsAfterTry.args");
@@ -645,16 +665,16 @@ public class CliTestGenerated extends AbstractCliTest {
             runTest("compiler/testData/cli/jvm/unknownExtraFlags.args");
         }
 
-        @TestMetadata("unsupportedTypeAlias.args")
-        public void testUnsupportedTypeAlias() throws Exception {
-            runTest("compiler/testData/cli/jvm/unsupportedTypeAlias.args");
-        }
-
         @TestMetadata("useMixedNamedArgumentsFlag.args")
         public void testUseMixedNamedArgumentsFlag() throws Exception {
             runTest("compiler/testData/cli/jvm/useMixedNamedArgumentsFlag.args");
         }
 
+        @TestMetadata("variableInWhenSubject.args")
+        public void testVariableInWhenSubject() throws Exception {
+            runTest("compiler/testData/cli/jvm/variableInWhenSubject.args");
+        }
+
         @TestMetadata("warningJdkWithNoJdk.args")
         public void testWarningJdkWithNoJdk() throws Exception {
             runTest("compiler/testData/cli/jvm/warningJdkWithNoJdk.args");

compiler/tests/org/jetbrains/kotlin/jvm/compiler/CompileKotlinAgainstCustomBinariesTest.kt

@@ -448,15 +448,6 @@ class CompileKotlinAgainstCustomBinariesTest : AbstractKotlinCompilerIntegration
         compileKotlin("main.kt", tmpdir, listOf(library))
     }
 
-    fun testTypeAliasesAreInvisibleInCompatibilityMode() {
-        val library = compileLibrary("library")
-        // -Xskip-metadata-version-check because if master is pre-release, an extra error will be reported when compiling with LV 1.0
-        // against a library compiled by a pre-release compiler
-        compileKotlin(
-            "main.kt", tmpdir, listOf(library), K2JVMCompiler(), listOf("-language-version", "1.0", "-Xskip-metadata-version-check")
-        )
-    }
-
     fun testInnerClassPackageConflict() {
         val output = compileLibrary("library", destination = File(tmpdir, "library"))
         File(testDataDirectory, "library/test/Foo/x.txt").copyTo(File(output, "test/Foo/x.txt"))

compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt

@@ -248,6 +248,12 @@ enum class LanguageVersion(val major: Int, val minor: Int) : DescriptionAware {
     val isStable: Boolean
         get() = this <= LATEST_STABLE
 
+    val isDeprecated: Boolean
+        get() = this >= OLDEST_DEPRECATED && this < FIRST_SUPPORTED
+
+    val isUnsupported: Boolean
+        get() = this < OLDEST_DEPRECATED
+
     val versionString: String
         get() = "$major.$minor"
 
@@ -265,7 +271,10 @@ enum class LanguageVersion(val major: Int, val minor: Int) : DescriptionAware {
             str.split(".", "-").let { if (it.size >= 2) fromVersionString("${it[0]}.${it[1]}") else null }
 
         @JvmField
-        val FIRST_SUPPORTED = KOTLIN_1_2
+        val OLDEST_DEPRECATED = KOTLIN_1_2
+
+        @JvmField
+        val FIRST_SUPPORTED = KOTLIN_1_3
 
         @JvmField
         val LATEST_STABLE = KOTLIN_1_4