Add assertion for variable as operator call.

compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/CallResolver.java

@@ -301,7 +301,8 @@ public class CallResolver {
                 context.scope, calleeExpression, expectedType, context.dataFlowInfo, context.trace);
         ExpressionReceiver expressionReceiver = ExpressionReceiver.Companion.create(calleeExpression, calleeType, context.trace.getBindingContext());
 
-        Call call = new CallTransformer.CallForImplicitInvoke(context.call.getExplicitReceiver(), expressionReceiver, context.call);
+        Call call = new CallTransformer.CallForImplicitInvoke(context.call.getExplicitReceiver(), expressionReceiver, context.call,
+                                                              false);
         TracingStrategyForInvoke tracingForInvoke = new TracingStrategyForInvoke(calleeExpression, call, calleeType);
         return resolveCallForInvoke(context.replaceCall(call), tracingForInvoke);
     }

compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/CallTransformer.java

@@ -94,11 +94,13 @@ public class CallTransformer {
         private final Receiver explicitExtensionReceiver;
         private final ExpressionReceiver calleeExpressionAsDispatchReceiver;
         private final KtSimpleNameExpression fakeInvokeExpression;
+        public final boolean itIsVariableAsFunctionCall;
 
         public CallForImplicitInvoke(
                 @Nullable Receiver explicitExtensionReceiver,
                 @NotNull ExpressionReceiver calleeExpressionAsDispatchReceiver,
-                @NotNull Call call
+                @NotNull Call call,
+                boolean functionCall
         ) {
             super(call);
             this.outerCall = call;
@@ -107,6 +109,7 @@ public class CallTransformer {
             this.fakeInvokeExpression =
                     (KtSimpleNameExpression) KtPsiFactoryKt.KtPsiFactory(call.getCallElement())
                             .createExpression(OperatorNameConventions.INVOKE.asString());
+            itIsVariableAsFunctionCall = functionCall;
         }
 
         @Nullable

compiler/frontend/src/org/jetbrains/kotlin/resolve/calls/tower/NewResolutionOldInference.kt

@@ -397,7 +397,7 @@ class NewResolutionOldInference(
             // todo hacks
             val functionCall = CallTransformer.CallForImplicitInvoke(
                     basicCallContext.call.explicitReceiver?.check { useExplicitReceiver },
-                    variableReceiver, basicCallContext.call)
+                    variableReceiver, basicCallContext.call, true)
             val tracingForInvoke = TracingStrategyForInvoke(calleeExpression, functionCall, variableReceiver.type)
             val basicCallResolutionContext = basicCallContext.replaceBindingTrace(variable.resolvedCall.trace)
                     .replaceCall(functionCall)

compiler/frontend/src/org/jetbrains/kotlin/resolve/validation/OperatorValidator.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
+ * Copyright 2010-2016 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,15 +25,16 @@ import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.BindingTrace
 import org.jetbrains.kotlin.resolve.calls.CallTransformer
-import org.jetbrains.kotlin.resolve.calls.tasks.isDynamic
-import org.jetbrains.kotlin.types.ErrorUtils
-import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
+import org.jetbrains.kotlin.resolve.calls.callResolverUtil.isConventionCall
 import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
-import org.jetbrains.kotlin.util.OperatorNameConventions
-import org.jetbrains.kotlin.util.OperatorNameConventions.PLUS
+import org.jetbrains.kotlin.resolve.calls.model.VariableAsFunctionResolvedCall
+import org.jetbrains.kotlin.resolve.calls.tasks.isDynamic
+import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
+import org.jetbrains.kotlin.types.ErrorUtils
 import org.jetbrains.kotlin.util.OperatorNameConventions.MINUS
-import org.jetbrains.kotlin.util.OperatorNameConventions.UNARY_PLUS
+import org.jetbrains.kotlin.util.OperatorNameConventions.PLUS
 import org.jetbrains.kotlin.util.OperatorNameConventions.UNARY_MINUS
+import org.jetbrains.kotlin.util.OperatorNameConventions.UNARY_PLUS
 
 class OperatorValidator : SymbolUsageValidator {
 
@@ -59,6 +60,13 @@ class OperatorValidator : SymbolUsageValidator {
 
         fun isArrayAccessExpression() = jetElement is KtArrayAccessExpression
 
+        if (resolvedCall is VariableAsFunctionResolvedCall && call is CallTransformer.CallForImplicitInvoke && call.itIsVariableAsFunctionCall) {
+            val outerCall = call.outerCall
+            if (isConventionCall(outerCall)) {
+                throw AssertionError("Illegal resolved call to variable with invoke for $outerCall. Variable: ${resolvedCall.variableCall.resultingDescriptor}")
+            }
+        }
+
         if (isMultiDeclaration() || isInvokeCall()) {
             if (!functionDescriptor.isOperator && call != null) {
                 report(call.callElement, functionDescriptor, trace)