[FIR] Sort HMPP dependencies topologically for symbol providers

This fixes an issue where an actual class from an intermediate module
has more supertypes than its expect declaration which leads to a
false-positive resolution error because a type reference resolves to the
expect class. The fix is to sort the dependencies topologically from
"most actual" to "most expect" when creating the list of symbol
providers.

#KT-57369 Fixed

compiler/container/src/org/jetbrains/kotlin/container/DataStructures.kt

@@ -19,7 +19,7 @@ package org.jetbrains.kotlin.container
 import java.util.ArrayList
 import java.util.HashSet
 
-fun <T> topologicalSort(items: Iterable<T>, dependencies: (T) -> Iterable<T>): List<T> {
+fun <T> topologicalSort(items: Iterable<T>, reverseOrder: Boolean = false, dependencies: (T) -> Iterable<T>): List<T> {
     val itemsInProgress = HashSet<T>()
     val completedItems = HashSet<T>()
     val result = ArrayList<T>()
@@ -45,7 +45,7 @@ fun <T> topologicalSort(items: Iterable<T>, dependencies: (T) -> Iterable<T>): L
     for (item in items)
         DfsVisit(item)
 
-    return result.apply { reverse() }
+    return result.apply { if (!reverseOrder) reverse() }
 }
 
 class CycleInTopoSortException : Exception()

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendMPPDiagnosticsWithLightTreeTestGenerated.java

@@ -550,6 +550,12 @@ public class FirOldFrontendMPPDiagnosticsWithLightTreeTestGenerated extends Abst
             KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/diagnostics/tests/multiplatform/hmpp"), Pattern.compile("^(.*)\\.kts?$"), Pattern.compile("^(.+)\\.(reversed|fir|ll)\\.kts?$"), TargetBackend.JVM_IR, true);
         }
 
+        @Test
+        @TestMetadata("intermediateActualHasAdditionalSupertypes.kt")
+        public void testIntermediateActualHasAdditionalSupertypes() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/hmpp/intermediateActualHasAdditionalSupertypes.kt");
+        }
+
         @Test
         @TestMetadata("kt-55570.kt")
         public void testKt_55570() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendMPPDiagnosticsWithPsiTestGenerated.java

@@ -550,6 +550,12 @@ public class FirOldFrontendMPPDiagnosticsWithPsiTestGenerated extends AbstractFi
             KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/diagnostics/tests/multiplatform/hmpp"), Pattern.compile("^(.*)\\.kts?$"), Pattern.compile("^(.+)\\.(reversed|fir|ll)\\.kts?$"), TargetBackend.JVM_IR, true);
         }
 
+        @Test
+        @TestMetadata("intermediateActualHasAdditionalSupertypes.kt")
+        public void testIntermediateActualHasAdditionalSupertypes() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/multiplatform/hmpp/intermediateActualHasAdditionalSupertypes.kt");
+        }
+
         @Test
         @TestMetadata("kt-55570.kt")
         public void testKt_55570() throws Exception {

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/session/FirAbstractSessionFactory.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.fir.session
 
 import org.jetbrains.kotlin.config.LanguageVersionSettings
+import org.jetbrains.kotlin.container.topologicalSort
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.checkers.registerCommonCheckers
 import org.jetbrains.kotlin.fir.deserialization.ModuleDataProvider
@@ -139,7 +140,13 @@ abstract class FirAbstractSessionFactory {
 
     private fun FirSession.computeDependencyProviderList(moduleData: FirModuleData): List<FirSymbolProvider> {
         val visited = mutableSetOf<FirSymbolProvider>()
-        return (moduleData.dependencies + moduleData.friendDependencies + moduleData.dependsOnDependencies)
+
+        // dependsOnDependencies can actualize declarations from their dependencies. Because actual declarations can be more specific
+        // (e.g. have additional supertypes), the modules must be ordered from most specific (i.e. actual) to most generic (i.e. expect)
+        // to prevent false positive resolution errors (see KT-57369 for an example).
+        val dependsOnDependencies = topologicalSort(moduleData.dependsOnDependencies) { it.dependsOnDependencies }
+
+        return (moduleData.dependencies + moduleData.friendDependencies + dependsOnDependencies)
             .mapNotNull { sessionProvider?.getSession(it) }
             .map { it.symbolProvider }
             .flatMap { it.flatten(visited, collectSourceProviders = it.session.kind == FirSession.Kind.Source) }

compiler/testData/diagnostics/tests/multiplatform/hmpp/intermediateActualHasAdditionalSupertypes.fir.kt

@@ -0,0 +1,30 @@
+// ISSUE: KT-57369
+
+// MODULE: common
+// TARGET_PLATFORM: Common
+interface CompletionHandler {
+    fun foo()
+}
+
+expect class CompletionHandlerBase()
+
+fun invokeOnCompletion(handler: CompletionHandler) {}
+
+// MODULE: intermediate()()(common)
+// TARGET_PLATFORM: Common
+// actual has an additional super type
+actual class CompletionHandlerBase : CompletionHandler {
+    override fun foo() {}
+}
+
+fun cancelFutureOnCompletionAlt(handlerBase: CompletionHandlerBase) {
+    invokeOnCompletion(handlerBase)
+    handlerBase.foo()
+}
+
+// MODULE: main()()(common, intermediate)
+// the order of dependencies is important to reproduce KT-57369
+fun cancelFutureOnCompletion(handlerBase: CompletionHandlerBase) {
+    invokeOnCompletion(handlerBase)
+    handlerBase.foo()
+}

compiler/testData/diagnostics/tests/multiplatform/hmpp/intermediateActualHasAdditionalSupertypes.kt

@@ -0,0 +1,30 @@
+// ISSUE: KT-57369
+
+// MODULE: common
+// TARGET_PLATFORM: Common
+interface CompletionHandler {
+    fun foo()
+}
+
+expect <!EXPECT_AND_ACTUAL_IN_THE_SAME_MODULE{COMMON}!>class CompletionHandlerBase<!>()
+
+fun invokeOnCompletion(handler: CompletionHandler) {}
+
+// MODULE: intermediate()()(common)
+// TARGET_PLATFORM: Common
+// actual has an additional super type
+actual <!EXPECT_AND_ACTUAL_IN_THE_SAME_MODULE!>class CompletionHandlerBase<!> : CompletionHandler {
+    override fun foo() {}
+}
+
+fun cancelFutureOnCompletionAlt(handlerBase: CompletionHandlerBase) {
+    invokeOnCompletion(handlerBase)
+    handlerBase.foo()
+}
+
+// MODULE: main()()(common, intermediate)
+// the order of dependencies is important to reproduce KT-57369
+fun cancelFutureOnCompletion(handlerBase: CompletionHandlerBase) {
+    invokeOnCompletion(handlerBase)
+    handlerBase.foo()
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -22209,6 +22209,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                     KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/diagnostics/tests/multiplatform/hmpp"), Pattern.compile("^(.*)\\.kts?$"), Pattern.compile("^(.+)\\.(reversed|fir|ll)\\.kts?$"), true);
                 }
 
+                @Test
+                @TestMetadata("intermediateActualHasAdditionalSupertypes.kt")
+                public void testIntermediateActualHasAdditionalSupertypes() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/multiplatform/hmpp/intermediateActualHasAdditionalSupertypes.kt");
+                }
+
                 @Test
                 @TestMetadata("kt-55570.kt")
                 public void testKt_55570() throws Exception {

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/FirFrontendFacade.kt

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.cli.jvm.config.jvmModularRoots
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.JVMConfigurationKeys
 import org.jetbrains.kotlin.config.LanguageFeature
+import org.jetbrains.kotlin.container.topologicalSort
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.checkers.registerExtendedCommonCheckers
 import org.jetbrains.kotlin.fir.deserialization.ModuleDataProvider
@@ -105,22 +106,9 @@ open class FirFrontendFacade(
     }
 
     protected fun sortDependsOnTopologically(module: TestModule): List<TestModule> {
-        val sortedModules = mutableListOf<TestModule>()
+        return topologicalSort(listOf(module), reverseOrder = true) { item ->
-        val visitedModules = mutableSetOf<TestModule>()
+            item.dependsOnDependencies.map { testServices.dependencyProvider.getTestModule(it.moduleName) }
-        val modulesQueue = ArrayDeque<TestModule>()
-        modulesQueue.add(module)
-
-        while (modulesQueue.isNotEmpty()) {
-            val currentModule = modulesQueue.removeFirst()
-            if (!visitedModules.add(currentModule)) continue
-            sortedModules.add(currentModule)
-
-            for (dependency in currentModule.dependsOnDependencies) {
-                modulesQueue.add(testServices.dependencyProvider.getTestModule(dependency.moduleName))
-            }
         }
-
-        return sortedModules.reversed()
     }
 
     private fun initializeModuleData(modules: List<TestModule>): Pair<Map<TestModule, FirModuleData>, ModuleDataProvider> {

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/HierarchicalMppIT.kt

@@ -334,6 +334,17 @@ open class HierarchicalMppIT : KGPBaseTest() {
         }
     }
 
+    @GradleTest
+    @DisplayName("KT-57369 K2/MPP: supertypes established in actual-classifiers from other source sets are not visible")
+    fun testHmppActualHasAdditionalSuperTypes(gradleVersion: GradleVersion) {
+        project(
+            "hierarchical-mpp-actual-has-additional-supertypes",
+            gradleVersion
+        ) {
+            build("assemble")
+        }
+    }
+
     @GradleTest
     @DisplayName("Test that disambiguation attribute of Kotlin JVM Target is propagated to Java configurations")
     fun testMultipleJvmTargetsWithJavaAndDisambiguationAttributeKt31468(gradleVersion: GradleVersion) {

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/hierarchical-mpp-actual-has-additional-supertypes/build.gradle.kts

@@ -0,0 +1,34 @@
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompilationTask
+
+plugins {
+    kotlin("multiplatform")
+}
+
+repositories {
+    mavenLocal()
+    maven("<localRepo>")
+    mavenCentral()
+}
+
+kotlin {
+    jvm {}
+    sourceSets {
+        val common = maybeCreate("commonMain")
+        val concurrent = maybeCreate("concurrentMain")
+        val jvm = maybeCreate("jvmMain")
+
+        concurrent.dependsOn(common)
+        jvm.dependsOn(concurrent)
+        jvm.dependsOn(common)
+    }
+}
+
+tasks.withType<KotlinCompilationTask<*>>().configureEach {
+    compilerOptions {
+        with(project.providers) {
+            languageVersion.set(KotlinVersion.KOTLIN_2_0)
+            apiVersion.set(KotlinVersion.KOTLIN_2_0)
+        }
+    }
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/hierarchical-mpp-actual-has-additional-supertypes/settings.gradle.kts

@@ -0,0 +1 @@
+rootProject.name = "mpp-sandbox"

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/hierarchical-mpp-actual-has-additional-supertypes/src/commonMain/kotlin/Main.common.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+interface CompletionHandler {
+    fun foo()
+}
+
+expect class CompletionHandlerBase()
+
+fun invokeOnCompletion(handler: CompletionHandler) {}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/hierarchical-mpp-actual-has-additional-supertypes/src/concurrentMain/kotlin/Main.concurrent.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+actual class CompletionHandlerBase: CompletionHandler {
+    override fun foo() {}
+}
+
+fun cancelFutureOnCompletionAlt(handlerBase: CompletionHandlerBase) {
+    invokeOnCompletion(handlerBase)
+    handlerBase.foo()
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/hierarchical-mpp-actual-has-additional-supertypes/src/jvmMain/kotlin/Main.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+fun cancelFutureOnCompletion(handlerBase: CompletionHandlerBase) {
+    invokeOnCompletion(handlerBase)
+    handlerBase.foo()
+}

native/native.tests/tests/org/jetbrains/kotlin/konan/blackboxtest/support/compilation/TestCompilationFactory.kt

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.konan.blackboxtest.support.compilation
 
+import org.jetbrains.kotlin.container.topologicalSort
 import org.jetbrains.kotlin.konan.blackboxtest.support.PackageName
 import org.jetbrains.kotlin.konan.blackboxtest.support.TestCase
 import org.jetbrains.kotlin.konan.blackboxtest.support.TestCase.*
@@ -205,21 +206,8 @@ internal class TestCompilationFactory {
         return CompilationDependencies(klibDependencies, staticCacheDependencies)
     }
 
-    // mimics FirFrontendFacade.sortDependsOnTopologically(org.jetbrains.kotlin.test.model.TestModule)
     private fun sortDependsOnTopologically(module: TestModule): List<TestModule> {
-        val sortedModules = mutableListOf<TestModule>()
+        return topologicalSort(listOf(module), reverseOrder = true) { it.allDependsOn }
-        val visitedModules = mutableSetOf<TestModule>()
-        val modulesQueue = ArrayDeque<TestModule>()
-        modulesQueue.add(module)
-
-        while (modulesQueue.isNotEmpty()) {
-            val currentModule = modulesQueue.removeFirst()
-            if (!visitedModules.add(currentModule)) continue
-            sortedModules.add(currentModule)
-            modulesQueue += currentModule.allDependsOn
-        }
-
-        return sortedModules.reversed()
     }
 
     companion object {