[FIR] Report EXPECTED_CLASS_CONSTRUCTOR_DELEGATION_CALL

^KT-59069 Fixed

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirExpectConsistencyChecker.kt

@@ -25,8 +25,7 @@ object FirExpectConsistencyChecker : FirBasicDeclarationChecker() {
         if (
             declaration !is FirMemberDeclaration ||
             !isTopLevel && !isInsideClass ||
-            !declaration.isExpect ||
-            declaration is FirConstructor
+            !declaration.isExpect
         ) {
             return
         }
@@ -34,6 +33,16 @@ object FirExpectConsistencyChecker : FirBasicDeclarationChecker() {
         val source = declaration.source ?: return
         if (source.kind is KtFakeSourceElementKind) return
 
+        if (declaration is FirConstructor) {
+            if (!declaration.isPrimary) {
+                val delegatedConstructorSource = declaration.delegatedConstructor?.source
+                if (delegatedConstructorSource?.kind !is KtFakeSourceElementKind) {
+                    reporter.reportOn(delegatedConstructorSource, FirErrors.EXPECTED_CLASS_CONSTRUCTOR_DELEGATION_CALL, context)
+                }
+            }
+            return
+        }
+
         if (Visibilities.isPrivate(declaration.visibility)) {
             reporter.reportOn(source, FirErrors.EXPECTED_PRIVATE_DECLARATION, context)
         }

compiler/testData/diagnostics/tests/multiplatform/headerClass/explicitConstructorDelegation.fir.kt

@@ -3,11 +3,11 @@
 <!NO_ACTUAL_FOR_EXPECT!>expect open class A {
     constructor(s: String)
 
-    constructor(n: Number) : this("A")
+    constructor(n: Number) : <!EXPECTED_CLASS_CONSTRUCTOR_DELEGATION_CALL!>this<!>("A")
 }<!>
 
 <!NO_ACTUAL_FOR_EXPECT!>expect class B : A {
     constructor(i: Int)
 
-    constructor() : super("B")
+    constructor() : <!EXPECTED_CLASS_CONSTRUCTOR_DELEGATION_CALL!>super<!>("B")
 }<!>

compiler/testData/diagnostics/tests/multiplatform/headerClass/headerClassWithFunctionBody.fir.kt

@@ -13,7 +13,7 @@
         "no"
     }
 
-    constructor() : this("no")
+    constructor() : <!EXPECTED_CLASS_CONSTRUCTOR_DELEGATION_CALL!>this<!>("no")
 
     val prop: String = <!EXPECTED_PROPERTY_INITIALIZER!>"no"<!>