Fix exception from InvokeProcessor when we get invoke from extension function type.

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

@@ -143,13 +143,11 @@ private fun ScopeTower.getExtensionInvokeCandidateDescriptor(
 ): CandidateWithBoundDispatchReceiver<FunctionDescriptor>? {
     if (!KotlinBuiltIns.isExactExtensionFunctionType(extensionFunctionReceiver.type)) return null
 
-    return ReceiverScopeTowerLevel(this, extensionFunctionReceiver).getFunctions(OperatorNameConventions.INVOKE, null).single().let {
-        assert(it.diagnostics.isEmpty())
-        val synthesizedInvoke = createSynthesizedInvokes(listOf(it.descriptor)).single()
+    val invokeDescriptor = extensionFunctionReceiver.type.memberScope.getContributedFunctions(OperatorNameConventions.INVOKE, location).single()
+    val synthesizedInvoke = createSynthesizedInvokes(listOf(invokeDescriptor)).single()
 
-        // here we don't add SynthesizedDescriptor diagnostic because it should has priority as member
-        CandidateWithBoundDispatchReceiverImpl(extensionFunctionReceiver, synthesizedInvoke, listOf())
-    }
+    // here we don't add SynthesizedDescriptor diagnostic because it should has priority as member
+    return CandidateWithBoundDispatchReceiverImpl(extensionFunctionReceiver, synthesizedInvoke, listOf())
 }
 
 // case 1.(foo())() or (foo())()

compiler/testData/diagnostics/tests/resolve/invoke/invokeAndSmartCast.kt

@@ -0,0 +1,23 @@
+class A(val x: (String.() -> Unit)?)
+
+fun test(a: A) {
+    if (a.x != null) {
+        "".<!DEBUG_INFO_SMARTCAST!>(a.x)<!>()
+        a.<!UNSAFE_CALL!>x<!>("") // todo
+        <!DEBUG_INFO_SMARTCAST!>(a.x)<!>("")
+    }
+    "".<!UNSAFE_CALL!>(a.x)<!>()
+    a.<!UNSAFE_CALL!>x<!>("")
+    <!UNSAFE_CALL!>(a.x)<!>("")
+
+    with("") {
+        a.<!UNSAFE_CALL!>x<!>(<!NO_VALUE_FOR_PARAMETER!>)<!>
+        <!UNSAFE_CALL!>(a.x)<!>()
+        if (a.x != null) {
+            a.<!UNSAFE_CALL!>x<!>(<!NO_VALUE_FOR_PARAMETER!>)<!> // todo
+            <!DEBUG_INFO_SMARTCAST!>(a.x)<!>()
+        }
+    }
+}
+
+fun <T, R> with(receiver: T, f: T.() -> R): R = receiver.f()

compiler/testData/diagnostics/tests/resolve/invoke/invokeAndSmartCast.txt

@@ -0,0 +1,12 @@
+package
+
+public fun test(/*0*/ a: A): kotlin.Unit
+public fun </*0*/ T, /*1*/ R> with(/*0*/ receiver: T, /*1*/ f: T.() -> R): R
+
+public final class A {
+    public constructor A(/*0*/ x: (kotlin.String.() -> kotlin.Unit)?)
+    public final val x: (kotlin.String.() -> kotlin.Unit)?
+    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/DiagnosticsTestGenerated.java

@@ -13430,6 +13430,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                     doTest(fileName);
                 }
 
+                @TestMetadata("invokeAndSmartCast.kt")
+                public void testInvokeAndSmartCast() throws Exception {
+                    String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/resolve/invoke/invokeAndSmartCast.kt");
+                    doTest(fileName);
+                }
+
                 @TestMetadata("invokeAsExtension.kt")
                 public void testInvokeAsExtension() throws Exception {
                     String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/resolve/invoke/invokeAsExtension.kt");