KT-13780 No completion and assertion error in log

#KT-13780 Fixed

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupElementFactory.kt

@@ -153,7 +153,7 @@ class LookupElementFactory(
                 //TODO: order for them
                 val fuzzyParameterType = parameterType.toFuzzyType(descriptor.typeParameters)
                 for ((variable, substitutor) in contextVariablesProvider.functionTypeVariables(fuzzyParameterType)) {
-                    val substitutedDescriptor = descriptor.substitute(substitutor)
+                    val substitutedDescriptor = descriptor.substitute(substitutor) ?: continue
                     add(createFunctionCallElementWithArguments(substitutedDescriptor, variable.name.render(), useReceiverTypes))
                 }
             }

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/smart/TypeInstantiationItems.kt

@@ -210,7 +210,7 @@ class TypeInstantiationItems(
                 1 -> {
                     val constructor = visibleConstructors.single()
                     val substitutor = TypeSubstitutor.create(fuzzyType.presentationType())
-                    val substitutedConstructor = constructor.substitute(substitutor)
+                    val substitutedConstructor = constructor.substitute(substitutor) ?: constructor // render original signature if failed to substitute
                     BasicLookupElementFactory.SHORT_NAMES_RENDERER.renderFunctionParameters(substitutedConstructor)
                 }
 

idea/idea-completion/testData/basic/common/KT13780.kt

@@ -0,0 +1,9 @@
+class ResolvedCall<out D>(val candidateDescriptor: D)
+
+fun test(myResolvedCall: ResolvedCall<String>) {
+    bar(my<caret>)
+}
+
+fun bar(foo: ResolvedCall<*>) {}
+
+// EXIST: myResolvedCall

idea/idea-completion/testData/basic/common/KT13780_1.kt

@@ -0,0 +1,9 @@
+class ResolvedCall<out D>(val candidateDescriptor: D)
+
+fun test(myResolvedCall: ResolvedCall<Any>) {
+    bar(my<caret>)
+}
+
+fun bar(foo: ResolvedCall<out CharSequence>) {}
+
+// EXIST: myResolvedCall

idea/idea-completion/testData/smart/constructor/StarProjection1.kt

@@ -0,0 +1,9 @@
+class X<D>()
+
+fun test() {
+    bar(<caret>)
+}
+
+fun bar(foo: X<*>) {}
+
+// EXIST: { lookupString:"X", itemText:"X", tailText:"() (<root>)" }

idea/idea-completion/testData/smart/constructor/StarProjection2.kt

@@ -0,0 +1,9 @@
+class X<D>(d: D)
+
+fun test() {
+    bar(<caret>)
+}
+
+fun bar(foo: X<*>) {}
+
+// EXIST: { lookupString:"X", itemText:"X", tailText:"(d: D) (<root>)" }

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/JSBasicCompletionTestGenerated.java

@@ -493,6 +493,18 @@ public class JSBasicCompletionTestGenerated extends AbstractJSBasicCompletionTes
             doTest(fileName);
         }
 
+        @TestMetadata("KT13780.kt")
+        public void testKT13780() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/KT13780.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("KT13780_1.kt")
+        public void testKT13780_1() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/KT13780_1.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("LocalMultideclarationValues.kt")
         public void testLocalMultideclarationValues() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/LocalMultideclarationValues.kt");

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/JvmBasicCompletionTestGenerated.java

@@ -493,6 +493,18 @@ public class JvmBasicCompletionTestGenerated extends AbstractJvmBasicCompletionT
             doTest(fileName);
         }
 
+        @TestMetadata("KT13780.kt")
+        public void testKT13780() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/KT13780.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("KT13780_1.kt")
+        public void testKT13780_1() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/KT13780_1.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("LocalMultideclarationValues.kt")
         public void testLocalMultideclarationValues() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/LocalMultideclarationValues.kt");

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/JvmSmartCompletionTestGenerated.java

@@ -874,6 +874,18 @@ public class JvmSmartCompletionTestGenerated extends AbstractJvmSmartCompletionT
             doTest(fileName);
         }
 
+        @TestMetadata("StarProjection1.kt")
+        public void testStarProjection1() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/smart/constructor/StarProjection1.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("StarProjection2.kt")
+        public void testStarProjection2() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/smart/constructor/StarProjection2.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("WithParameters.kt")
         public void testWithParameters() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("idea/idea-completion/testData/smart/constructor/WithParameters.kt");