Prohibit 'native' annotation on constructors

Currently doesn't work for primary ones

 #KT-7000 Fixed

compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/native.kt

@@ -23,7 +23,9 @@ import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
 import org.jetbrains.kotlin.diagnostics.DiagnosticSink
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
+import org.jetbrains.kotlin.descriptors.ConstructorDescriptor
 import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.diagnostics.Errors
 import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm
 import org.jetbrains.kotlin.psi.JetDeclarationWithBody
 import org.jetbrains.kotlin.resolve.annotations.hasInlineAnnotation
@@ -50,7 +52,10 @@ public class NativeFunChecker : DeclarationChecker {
             diagnosticHolder.report(ErrorsJvm.NATIVE_DECLARATION_CANNOT_BE_ABSTRACT.on(declaration))
         }
 
-        if (declaration is JetDeclarationWithBody && declaration.hasBody()) {
+        if (descriptor is ConstructorDescriptor) {
+            diagnosticHolder.report(Errors.INAPPLICABLE_ANNOTATION.on(declaration));
+        }
+        else if (declaration is JetDeclarationWithBody && declaration.hasBody()) {
             diagnosticHolder.report(ErrorsJvm.NATIVE_DECLARATION_CANNOT_HAVE_BODY.on(declaration))
         }
 

compiler/testData/diagnostics/testsWithStdLib/native/constructor.kt

@@ -0,0 +1,10 @@
+class A {
+    <!INAPPLICABLE_ANNOTATION!>native constructor() {}<!>
+    inner class B {
+        <!INAPPLICABLE_ANNOTATION!>native constructor() {}<!>
+    }
+
+    <!INAPPLICABLE_ANNOTATION!>native constructor(<!UNUSED_PARAMETER!>x<!>: Int)
+<!>}
+
+class C [native] () // TODO KT-7057

compiler/testData/diagnostics/testsWithStdLib/native/constructor.txt

@@ -0,0 +1,23 @@
+package
+
+internal final class A {
+    kotlin.jvm.native() public constructor A()
+    kotlin.jvm.native() public constructor A(/*0*/ x: kotlin.Int)
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    internal final inner class B {
+        kotlin.jvm.native() public constructor B()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+internal final class C {
+    kotlin.jvm.native() public constructor C()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/tests/org/jetbrains/kotlin/checkers/JetDiagnosticsTestWithStdLibGenerated.java

@@ -754,6 +754,12 @@ public class JetDiagnosticsTestWithStdLibGenerated extends AbstractJetDiagnostic
             doTest(fileName);
         }
 
+        @TestMetadata("constructor.kt")
+        public void testConstructor() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithStdLib/native/constructor.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("inline.kt")
         public void testInline() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithStdLib/native/inline.kt");