K2: handle alias-based types nullability properly in ConeTypeContext

#KT-60154 Fixed

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFE10TestdataTestGenerated.java

@@ -41290,6 +41290,12 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
                 runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/hashMapTypeAlias.kt");
             }
 
+            @Test
+            @TestMetadata("nothingTypeAlias.kt")
+            public void testNothingTypeAlias() throws Exception {
+                runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/nothingTypeAlias.kt");
+            }
+
             @Test
             @TestMetadata("typeAliasSamAdapterConstructors.kt")
             public void testTypeAliasSamAdapterConstructors() throws Exception {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated.java

@@ -41290,6 +41290,12 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
                 runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/hashMapTypeAlias.kt");
             }
 
+            @Test
+            @TestMetadata("nothingTypeAlias.kt")
+            public void testNothingTypeAlias() throws Exception {
+                runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/nothingTypeAlias.kt");
+            }
+
             @Test
             @TestMetadata("typeAliasSamAdapterConstructors.kt")
             public void testTypeAliasSamAdapterConstructors() throws Exception {

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

@@ -41354,6 +41354,12 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
                 runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/hashMapTypeAlias.kt");
             }
 
+            @Test
+            @TestMetadata("nothingTypeAlias.kt")
+            public void testNothingTypeAlias() throws Exception {
+                runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/nothingTypeAlias.kt");
+            }
+
             @Test
             @TestMetadata("typeAliasSamAdapterConstructors.kt")
             public void testTypeAliasSamAdapterConstructors() throws Exception {

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

@@ -41468,6 +41468,12 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
                 runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/hashMapTypeAlias.kt");
             }
 
+            @Test
+            @TestMetadata("nothingTypeAlias.kt")
+            public void testNothingTypeAlias() throws Exception {
+                runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/nothingTypeAlias.kt");
+            }
+
             @Test
             @TestMetadata("typeAliasSamAdapterConstructors.kt")
             public void testTypeAliasSamAdapterConstructors() throws Exception {

compiler/fir/providers/src/org/jetbrains/kotlin/fir/types/ConeTypeContext.kt

@@ -143,12 +143,12 @@ interface ConeTypeContext : TypeSystemContext, TypeSystemOptimizationContext, Ty
 
     override fun SimpleTypeMarker.isMarkedNullable(): Boolean {
         require(this is ConeKotlinType)
-        return this.nullability.isNullable
+        return fullyExpandedType(session).nullability.isNullable
     }
 
     override fun SimpleTypeMarker.withNullability(nullable: Boolean): SimpleTypeMarker {
         require(this is ConeKotlinType)
-        return withNullability(ConeNullability.create(nullable), session.typeContext)
+        return fullyExpandedType(session).withNullability(ConeNullability.create(nullable), session.typeContext) as SimpleTypeMarker
     }
 
     override fun SimpleTypeMarker.typeConstructor(): TypeConstructorMarker {

compiler/testData/diagnostics/testsWithStdLib/typealias/nothingTypeAlias.kt

@@ -0,0 +1,22 @@
+// FIR_IDENTICAL
+// ISSUE: KT-60154
+
+// MODULE: lib
+// FILE: lib.kt
+
+interface Column<TData : Any, TValue>
+
+fun <T : Any> column(): Column<T, Void> = TODO()
+
+fun <T : Any> column(id: String): Column<T, String> = TODO()
+
+typealias Void = Nothing?
+
+// MODULE: app(lib)
+// FILE: app.kt
+
+interface RowData<T : Comparable<T>>
+
+typealias ReadonlyArray<T> = Array<out T>
+
+private val ALL_COLUMNS: ReadonlyArray<Column<RowData<*>, *>> = arrayOf(column(id = ""), column())

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

@@ -42472,6 +42472,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                 runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/hashMapTypeAlias.kt");
             }
 
+            @Test
+            @TestMetadata("nothingTypeAlias.kt")
+            public void testNothingTypeAlias() throws Exception {
+                runTest("compiler/testData/diagnostics/testsWithStdLib/typealias/nothingTypeAlias.kt");
+            }
+
             @Test
             @TestMetadata("typeAliasSamAdapterConstructors.kt")
             public void testTypeAliasSamAdapterConstructors() throws Exception {