[FE] Prohibit open val deferred initialization

^KT-57553 Fixed
Review: https://jetbrains.team/p/kt/reviews/9967

Other related tests:
- testUninitializedOrReassignedVariables
- testUseOfPropertiesWithoutPrimary
- @TestMetadata("compiler/testData/diagnostics/tests/secondaryConstructors")
- testAugmentedAssignmentInInitializer
- testInitOpenSetter
- testInitOverrideInConstructorComplex
- testPropertyInitializationOrder

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDataClassConverters.kt

@@ -2857,6 +2857,12 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.MUST_BE_INITIALIZED_OR_BE_FINAL_WARNING) { firDiagnostic ->
+        MustBeInitializedOrBeFinalWarningImpl(
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.MUST_BE_INITIALIZED_OR_BE_ABSTRACT) { firDiagnostic ->
         MustBeInitializedOrBeAbstractImpl(
             firDiagnostic as KtPsiDiagnostic,
@@ -2869,6 +2875,12 @@ internal val KT_DIAGNOSTIC_CONVERTER = KtDiagnosticConverterBuilder.buildConvert
             token,
         )
     }
+    add(FirErrors.MUST_BE_INITIALIZED_OR_FINAL_OR_ABSTRACT_WARNING) { firDiagnostic ->
+        MustBeInitializedOrFinalOrAbstractWarningImpl(
+            firDiagnostic as KtPsiDiagnostic,
+            token,
+        )
+    }
     add(FirErrors.EXTENSION_PROPERTY_MUST_HAVE_ACCESSORS_OR_BE_ABSTRACT) { firDiagnostic ->
         ExtensionPropertyMustHaveAccessorsOrBeAbstractImpl(
             firDiagnostic as KtPsiDiagnostic,

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDiagnostics.kt

@@ -2023,6 +2023,10 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = MustBeInitializedOrBeFinal::class
     }
 
+    abstract class MustBeInitializedOrBeFinalWarning : KtFirDiagnostic<KtProperty>() {
+        override val diagnosticClass get() = MustBeInitializedOrBeFinalWarning::class
+    }
+
     abstract class MustBeInitializedOrBeAbstract : KtFirDiagnostic<KtProperty>() {
         override val diagnosticClass get() = MustBeInitializedOrBeAbstract::class
     }
@@ -2031,6 +2035,10 @@ sealed class KtFirDiagnostic<PSI : PsiElement> : KtDiagnosticWithPsi<PSI> {
         override val diagnosticClass get() = MustBeInitializedOrFinalOrAbstract::class
     }
 
+    abstract class MustBeInitializedOrFinalOrAbstractWarning : KtFirDiagnostic<KtProperty>() {
+        override val diagnosticClass get() = MustBeInitializedOrFinalOrAbstractWarning::class
+    }
+
     abstract class ExtensionPropertyMustHaveAccessorsOrBeAbstract : KtFirDiagnostic<KtProperty>() {
         override val diagnosticClass get() = ExtensionPropertyMustHaveAccessorsOrBeAbstract::class
     }

analysis/analysis-api-fir/src/org/jetbrains/kotlin/analysis/api/fir/diagnostics/KtFirDiagnosticsImpl.kt

@@ -2430,6 +2430,11 @@ internal class MustBeInitializedOrBeFinalImpl(
     override val token: KtLifetimeToken,
 ) : KtFirDiagnostic.MustBeInitializedOrBeFinal(), KtAbstractFirDiagnostic<KtProperty>
 
+internal class MustBeInitializedOrBeFinalWarningImpl(
+    override val firDiagnostic: KtPsiDiagnostic,
+    override val token: KtLifetimeToken,
+) : KtFirDiagnostic.MustBeInitializedOrBeFinalWarning(), KtAbstractFirDiagnostic<KtProperty>
+
 internal class MustBeInitializedOrBeAbstractImpl(
     override val firDiagnostic: KtPsiDiagnostic,
     override val token: KtLifetimeToken,
@@ -2440,6 +2445,11 @@ internal class MustBeInitializedOrFinalOrAbstractImpl(
     override val token: KtLifetimeToken,
 ) : KtFirDiagnostic.MustBeInitializedOrFinalOrAbstract(), KtAbstractFirDiagnostic<KtProperty>
 
+internal class MustBeInitializedOrFinalOrAbstractWarningImpl(
+    override val firDiagnostic: KtPsiDiagnostic,
+    override val token: KtLifetimeToken,
+) : KtFirDiagnostic.MustBeInitializedOrFinalOrAbstractWarning(), KtAbstractFirDiagnostic<KtProperty>
+
 internal class ExtensionPropertyMustHaveAccessorsOrBeAbstractImpl(
     override val firDiagnostic: KtPsiDiagnostic,
     override val token: KtLifetimeToken,

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

@@ -2984,6 +2984,24 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
                 runTest("compiler/testData/diagnostics/tests/backingField/MustBeInitializedEffectivelyFinalOn.kt");
             }
 
+            @Test
+            @TestMetadata("OpenValPartialDeferredInitErrorAnyway.kt")
+            public void testOpenValPartialDeferredInitErrorAnyway() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/OpenValPartialDeferredInitErrorAnyway.kt");
+            }
+
+            @Test
+            @TestMetadata("OpenValPartialDeferredInitSecondaryConstructorErrorAnyway.kt")
+            public void testOpenValPartialDeferredInitSecondaryConstructorErrorAnyway() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/OpenValPartialDeferredInitSecondaryConstructorErrorAnyway.kt");
+            }
+
+            @Test
+            @TestMetadata("OpenValPartialDeferredInitTwoSecondaryConstructorsErrorAnyway.kt")
+            public void testOpenValPartialDeferredInitTwoSecondaryConstructorsErrorAnyway() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/OpenValPartialDeferredInitTwoSecondaryConstructorsErrorAnyway.kt");
+            }
+
             @Test
             @TestMetadata("SetterWithExplicitType.kt")
             public void testSetterWithExplicitType() throws Exception {
@@ -2997,9 +3015,15 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
             }
 
             @Test
-            @TestMetadata("ValDeferredInitInOpenClass.kt")
-            public void testValDeferredInitInOpenClass() throws Exception {
-                runTest("compiler/testData/diagnostics/tests/backingField/ValDeferredInitInOpenClass.kt");
+            @TestMetadata("ValDeferredInitInOpenClassOpenValError.kt")
+            public void testValDeferredInitInOpenClassOpenValError() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/ValDeferredInitInOpenClassOpenValError.kt");
+            }
+
+            @Test
+            @TestMetadata("ValDeferredInitInOpenClassOpenValWarning.kt")
+            public void testValDeferredInitInOpenClassOpenValWarning() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/ValDeferredInitInOpenClassOpenValWarning.kt");
             }
 
             @Test

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

@@ -2984,6 +2984,24 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
                 runTest("compiler/testData/diagnostics/tests/backingField/MustBeInitializedEffectivelyFinalOn.kt");
             }
 
+            @Test
+            @TestMetadata("OpenValPartialDeferredInitErrorAnyway.kt")
+            public void testOpenValPartialDeferredInitErrorAnyway() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/OpenValPartialDeferredInitErrorAnyway.kt");
+            }
+
+            @Test
+            @TestMetadata("OpenValPartialDeferredInitSecondaryConstructorErrorAnyway.kt")
+            public void testOpenValPartialDeferredInitSecondaryConstructorErrorAnyway() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/OpenValPartialDeferredInitSecondaryConstructorErrorAnyway.kt");
+            }
+
+            @Test
+            @TestMetadata("OpenValPartialDeferredInitTwoSecondaryConstructorsErrorAnyway.kt")
+            public void testOpenValPartialDeferredInitTwoSecondaryConstructorsErrorAnyway() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/OpenValPartialDeferredInitTwoSecondaryConstructorsErrorAnyway.kt");
+            }
+
             @Test
             @TestMetadata("SetterWithExplicitType.kt")
             public void testSetterWithExplicitType() throws Exception {
@@ -2997,9 +3015,15 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
             }
 
             @Test
-            @TestMetadata("ValDeferredInitInOpenClass.kt")
-            public void testValDeferredInitInOpenClass() throws Exception {
-                runTest("compiler/testData/diagnostics/tests/backingField/ValDeferredInitInOpenClass.kt");
+            @TestMetadata("ValDeferredInitInOpenClassOpenValError.kt")
+            public void testValDeferredInitInOpenClassOpenValError() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/ValDeferredInitInOpenClassOpenValError.kt");
+            }
+
+            @Test
+            @TestMetadata("ValDeferredInitInOpenClassOpenValWarning.kt")
+            public void testValDeferredInitInOpenClassOpenValWarning() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/backingField/ValDeferredInitInOpenClassOpenValWarning.kt");
             }
 
             @Test