[NI] Report diagnostic on abstract class instantiation.

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/components/ResolutionParts.kt

@@ -16,10 +16,7 @@
 
 package org.jetbrains.kotlin.resolve.calls.components
 
-import org.jetbrains.kotlin.descriptors.CallableDescriptor
-import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
-import org.jetbrains.kotlin.descriptors.ReceiverParameterDescriptor
-import org.jetbrains.kotlin.descriptors.Visibilities
+import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.resolve.calls.components.TypeArgumentsToParametersMapper.TypeArgumentsMapping.NoExplicitArguments
 import org.jetbrains.kotlin.resolve.calls.inference.model.DeclaredUpperBoundConstraintPosition
 import org.jetbrains.kotlin.resolve.calls.inference.model.ExplicitTypeParameterConstraintPosition
@@ -29,6 +26,7 @@ import org.jetbrains.kotlin.resolve.calls.smartcasts.getReceiverValueWithSmartCa
 import org.jetbrains.kotlin.resolve.calls.tasks.ExplicitReceiverKind.*
 import org.jetbrains.kotlin.resolve.calls.tower.ResolutionCandidateApplicability
 import org.jetbrains.kotlin.resolve.calls.tower.ResolutionCandidateApplicability.IMPOSSIBLE_TO_GENERATE
+import org.jetbrains.kotlin.resolve.calls.tower.ResolutionCandidateApplicability.RUNTIME_ERROR
 import org.jetbrains.kotlin.resolve.calls.tower.VisibilityError
 import org.jetbrains.kotlin.types.IndexedParametersSubstitution
 import org.jetbrains.kotlin.types.TypeSubstitutor
@@ -36,6 +34,17 @@ import org.jetbrains.kotlin.types.UnwrappedType
 import org.jetbrains.kotlin.types.Variance
 import org.jetbrains.kotlin.types.typeUtil.asTypeProjection
 
+internal object CheckInstantiationOfAbstractClass : ResolutionPart {
+    override fun SimpleKotlinResolutionCandidate.process(): List<KotlinCallDiagnostic> {
+        if (candidateDescriptor is ConstructorDescriptor && !kotlinCall.isSupertypeConstructorCall) {
+            if (candidateDescriptor.constructedClass.modality == Modality.ABSTRACT) {
+                return listOf(InstantiationOfAbstractClass)
+            }
+        }
+
+        return emptyList()
+    }
+}
 
 internal object CheckVisibility : ResolutionPart {
     override fun SimpleKotlinResolutionCandidate.process(): List<KotlinCallDiagnostic> {
@@ -213,6 +222,10 @@ fun <D : CallableDescriptor> D.safeSubstitute(substitutor: TypeSubstitutor): D =
 fun UnwrappedType.substitute(substitutor: TypeSubstitutor): UnwrappedType = substitutor.substitute(this, Variance.INVARIANT)!!.unwrap()
 
 
+object InstantiationOfAbstractClass : KotlinCallDiagnostic(RUNTIME_ERROR) {
+    override fun report(reporter: DiagnosticReporter) = reporter.onCall(this)
+}
+
 class UnstableSmartCast(val expressionArgument: ExpressionKotlinCallArgument, val targetType: UnwrappedType) :
         KotlinCallDiagnostic(ResolutionCandidateApplicability.MAY_THROW_RUNTIME_ERROR) {
     override fun report(reporter: DiagnosticReporter) = reporter.onCallArgument(expressionArgument, this)

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/inference/components/SimpleConstraintSystemImpl.kt

@@ -63,5 +63,6 @@ class SimpleConstraintSystemImpl(constraintInjector: ConstraintInjector, resultT
         override val externalArgument: KotlinCallArgument? get() = throw UnsupportedOperationException()
         override val isInfixCall: Boolean get() = throw UnsupportedOperationException()
         override val isOperatorCall: Boolean get() = throw UnsupportedOperationException()
+        override val isSupertypeConstructorCall: Boolean get() = throw UnsupportedOperationException()
     }
 }

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/model/KotlinCall.kt

@@ -37,6 +37,7 @@ interface KotlinCall {
 
     val isInfixCall: Boolean
     val isOperatorCall: Boolean
+    val isSupertypeConstructorCall: Boolean
 }
 
 private fun SimpleKotlinCallArgument.checkReceiverInvariants() {

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/model/KotlinResolverContext.kt

@@ -81,6 +81,7 @@ enum class KotlinCallKind(vararg resolutionPart: ResolutionPart) {
             CheckReceivers
     ),
     FUNCTION(
+            CheckInstantiationOfAbstractClass,
             CheckVisibility,
             MapTypeArguments,
             MapArguments,