KT-37131 Record default arguments in argument adaptation

Also, don't adapt argument when expected type is base reflection type
(KCallable<T>, etc), since such types don't contain parameter types.

compiler/fir/fir2ir/tests/org/jetbrains/kotlin/fir/Fir2IrTextTestGenerated.java

@@ -1379,6 +1379,11 @@ public class Fir2IrTextTestGenerated extends AbstractFir2IrTextTest {
                 runTest("compiler/testData/ir/irText/expressions/callableReferences/constructorWithAdaptedArguments.kt");
             }
 
+            @TestMetadata("funWithDefaultParametersAsKCallableStar.kt")
+            public void testFunWithDefaultParametersAsKCallableStar() throws Exception {
+                runTest("compiler/testData/ir/irText/expressions/callableReferences/funWithDefaultParametersAsKCallableStar.kt");
+            }
+
             @TestMetadata("genericMember.kt")
             public void testGenericMember() throws Exception {
                 runTest("compiler/testData/ir/irText/expressions/callableReferences/genericMember.kt");
@@ -1389,6 +1394,11 @@ public class Fir2IrTextTestGenerated extends AbstractFir2IrTextTest {
                 runTest("compiler/testData/ir/irText/expressions/callableReferences/importedFromObject.kt");
             }
 
+            @TestMetadata("kt37131.kt")
+            public void testKt37131() throws Exception {
+                runTest("compiler/testData/ir/irText/expressions/callableReferences/kt37131.kt");
+            }
+
             @TestMetadata("typeArguments.kt")
             public void testTypeArguments() throws Exception {
                 runTest("compiler/testData/ir/irText/expressions/callableReferences/typeArguments.kt");

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

@@ -304,7 +304,10 @@ class CallableReferencesCandidateFactory(
 
                 mappedArgumentTypes[index] = mappedArgument
             }
-            if (resolvedArgument == ResolvedCallArgument.DefaultArgument) defaults++
+            if (resolvedArgument == ResolvedCallArgument.DefaultArgument) {
+                defaults++
+                mappedArguments[valueParameter] = resolvedArgument
+            }
         }
         if (mappedArgumentTypes.any { it == null }) return null
 
@@ -317,9 +320,16 @@ class CallableReferencesCandidateFactory(
 
         val coercion = if (returnExpectedType.isUnit()) CoercionStrategy.COERCION_TO_UNIT else CoercionStrategy.NO_COERCION
 
+        val adaptedArguments =
+            if (expectedType != null && ReflectionTypes.isBaseTypeForNumberedReferenceTypes(expectedType))
+                emptyMap()
+            else
+                mappedArguments
+
         return CallableReferenceAdaptation(
             @Suppress("UNCHECKED_CAST") (mappedArgumentTypes as Array<KotlinType>),
-            coercion, defaults, mappedArguments
+            coercion, defaults,
+            adaptedArguments
         )
     }
 

compiler/testData/ir/irText/expressions/callableReferences/funWithDefaultParametersAsKCallableStar.fir.txt

@@ -0,0 +1,73 @@
+FILE fqName:<root> fileName:/funWithDefaultParametersAsKCallableStar.kt
+  FUN name:defaultsOnly visibility:public modality:FINAL <> (x:kotlin.String) returnType:kotlin.Int
+    VALUE_PARAMETER name:x index:0 type:kotlin.String
+      EXPRESSION_BODY
+        CONST String type=kotlin.String value=""
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun defaultsOnly (x: kotlin.String): kotlin.Int declared in <root>'
+        CONST Int type=kotlin.Int value=1
+  FUN name:regularAndDefaults visibility:public modality:FINAL <> (x1:kotlin.String, x2:kotlin.String) returnType:kotlin.Int
+    VALUE_PARAMETER name:x1 index:0 type:kotlin.String
+    VALUE_PARAMETER name:x2 index:1 type:kotlin.String
+      EXPRESSION_BODY
+        CONST String type=kotlin.String value=""
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun regularAndDefaults (x1: kotlin.String, x2: kotlin.String): kotlin.Int declared in <root>'
+        CONST Int type=kotlin.Int value=1
+  FUN name:varargs visibility:public modality:FINAL <> (xs:kotlin.Array<out kotlin.String>) returnType:kotlin.Int
+    VALUE_PARAMETER name:xs index:0 type:kotlin.Array<out kotlin.String> varargElementType:kotlin.String [vararg]
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun varargs (vararg xs: kotlin.String): kotlin.Int declared in <root>'
+        CONST Int type=kotlin.Int value=1
+  CLASS CLASS name:C modality:FINAL visibility:public superTypes:[kotlin.Any]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.C
+    CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:<root>.C [primary]
+      VALUE_PARAMETER name:x index:0 type:kotlin.String
+        EXPRESSION_BODY
+          CONST String type=kotlin.String value=""
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:C modality:FINAL visibility:public superTypes:[kotlin.Any]'
+    PROPERTY name:x visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'x: kotlin.String declared in <root>.C.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:<root>.C) returnType:kotlin.String
+        correspondingProperty: PROPERTY name:x visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.C
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-x> (): kotlin.String declared in <root>.C'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.C declared in <root>.C.<get-x>' type=<root>.C origin=null
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  FUN name:useKCallableStar visibility:public modality:FINAL <> (fn:kotlin.reflect.KCallable<*>) returnType:kotlin.Unit
+    VALUE_PARAMETER name:fn index:0 type:kotlin.reflect.KCallable<*>
+    BLOCK_BODY
+  FUN name:testDefaultsOnlyStar visibility:public modality:FINAL <> () returnType:kotlin.Unit
+    BLOCK_BODY
+      ERROR_CALL 'Unresolved reference: <Inapplicable(INAPPLICABLE): [/useKCallableStar]>#' type=IrErrorType
+        FUNCTION_REFERENCE 'public final fun defaultsOnly (x: kotlin.String): kotlin.Int declared in <root>' type=kotlin.reflect.KFunction0<kotlin.Int> origin=null reflectionTarget=<same>
+  FUN name:testRegularAndDefaultsStar visibility:public modality:FINAL <> () returnType:kotlin.Unit
+    BLOCK_BODY
+      ERROR_CALL 'Unresolved reference: <Inapplicable(INAPPLICABLE): [/useKCallableStar]>#' type=IrErrorType
+        FUNCTION_REFERENCE 'public final fun regularAndDefaults (x1: kotlin.String, x2: kotlin.String): kotlin.Int declared in <root>' type=kotlin.reflect.KFunction1<kotlin.String, kotlin.Int> origin=null reflectionTarget=<same>
+  FUN name:testVarargsStar visibility:public modality:FINAL <> () returnType:kotlin.Unit
+    BLOCK_BODY
+      ERROR_CALL 'Unresolved reference: <Inapplicable(INAPPLICABLE): [/useKCallableStar]>#' type=IrErrorType
+        FUNCTION_REFERENCE 'public final fun varargs (vararg xs: kotlin.String): kotlin.Int declared in <root>' type=kotlin.reflect.KFunction1<kotlin.Array<out kotlin.String>, kotlin.Int> origin=null reflectionTarget=<same>
+  FUN name:testCtorStar visibility:public modality:FINAL <> () returnType:kotlin.Unit
+    BLOCK_BODY
+      ERROR_CALL 'Unresolved reference: <Inapplicable(INAPPLICABLE): [/useKCallableStar]>#' type=IrErrorType
+        FUNCTION_REFERENCE 'public constructor <init> (x: kotlin.String) [primary] declared in <root>.C' type=kotlin.reflect.KFunction0<<root>.C> origin=null reflectionTarget=<same>

compiler/testData/ir/irText/expressions/callableReferences/funWithDefaultParametersAsKCallableStar.kt

@@ -0,0 +1,21 @@
+// WITH_REFLECT
+import kotlin.reflect.KCallable
+
+fun defaultsOnly(x: String = "") = 1
+
+fun regularAndDefaults(x1: String, x2: String = "") = 1
+
+fun varargs(vararg xs: String) = 1
+
+class C(val x: String = "")
+
+fun useKCallableStar(fn: KCallable<*>) {}
+
+
+fun testDefaultsOnlyStar() { useKCallableStar(::defaultsOnly) }
+
+fun testRegularAndDefaultsStar() { useKCallableStar(::regularAndDefaults) }
+
+fun testVarargsStar() { useKCallableStar(::varargs) }
+
+fun testCtorStar() { useKCallableStar(::C) }

compiler/testData/ir/irText/expressions/callableReferences/funWithDefaultParametersAsKCallableStar.txt

@@ -0,0 +1,73 @@
+FILE fqName:<root> fileName:/funWithDefaultParametersAsKCallableStar.kt
+  FUN name:defaultsOnly visibility:public modality:FINAL <> (x:kotlin.String) returnType:kotlin.Int
+    VALUE_PARAMETER name:x index:0 type:kotlin.String
+      EXPRESSION_BODY
+        CONST String type=kotlin.String value=""
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun defaultsOnly (x: kotlin.String): kotlin.Int declared in <root>'
+        CONST Int type=kotlin.Int value=1
+  FUN name:regularAndDefaults visibility:public modality:FINAL <> (x1:kotlin.String, x2:kotlin.String) returnType:kotlin.Int
+    VALUE_PARAMETER name:x1 index:0 type:kotlin.String
+    VALUE_PARAMETER name:x2 index:1 type:kotlin.String
+      EXPRESSION_BODY
+        CONST String type=kotlin.String value=""
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun regularAndDefaults (x1: kotlin.String, x2: kotlin.String): kotlin.Int declared in <root>'
+        CONST Int type=kotlin.Int value=1
+  FUN name:varargs visibility:public modality:FINAL <> (xs:kotlin.Array<out kotlin.String>) returnType:kotlin.Int
+    VALUE_PARAMETER name:xs index:0 type:kotlin.Array<out kotlin.String> varargElementType:kotlin.String [vararg]
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun varargs (vararg xs: kotlin.String): kotlin.Int declared in <root>'
+        CONST Int type=kotlin.Int value=1
+  CLASS CLASS name:C modality:FINAL visibility:public superTypes:[kotlin.Any]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.C
+    CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:<root>.C [primary]
+      VALUE_PARAMETER name:x index:0 type:kotlin.String
+        EXPRESSION_BODY
+          CONST String type=kotlin.String value=""
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:C modality:FINAL visibility:public superTypes:[kotlin.Any]'
+    PROPERTY name:x visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'x: kotlin.String declared in <root>.C.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:<root>.C) returnType:kotlin.String
+        correspondingProperty: PROPERTY name:x visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.C
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-x> (): kotlin.String declared in <root>.C'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.C declared in <root>.C.<get-x>' type=<root>.C origin=null
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  FUN name:useKCallableStar visibility:public modality:FINAL <> (fn:kotlin.reflect.KCallable<*>) returnType:kotlin.Unit
+    VALUE_PARAMETER name:fn index:0 type:kotlin.reflect.KCallable<*>
+    BLOCK_BODY
+  FUN name:testDefaultsOnlyStar visibility:public modality:FINAL <> () returnType:kotlin.Unit
+    BLOCK_BODY
+      CALL 'public final fun useKCallableStar (fn: kotlin.reflect.KCallable<*>): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+        fn: FUNCTION_REFERENCE 'public final fun defaultsOnly (x: kotlin.String): kotlin.Int declared in <root>' type=kotlin.reflect.KFunction0<kotlin.Int> origin=null reflectionTarget=<same>
+  FUN name:testRegularAndDefaultsStar visibility:public modality:FINAL <> () returnType:kotlin.Unit
+    BLOCK_BODY
+      CALL 'public final fun useKCallableStar (fn: kotlin.reflect.KCallable<*>): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+        fn: FUNCTION_REFERENCE 'public final fun regularAndDefaults (x1: kotlin.String, x2: kotlin.String): kotlin.Int declared in <root>' type=kotlin.reflect.KFunction2<kotlin.String, kotlin.String, kotlin.Int> origin=null reflectionTarget=<same>
+  FUN name:testVarargsStar visibility:public modality:FINAL <> () returnType:kotlin.Unit
+    BLOCK_BODY
+      CALL 'public final fun useKCallableStar (fn: kotlin.reflect.KCallable<*>): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+        fn: FUNCTION_REFERENCE 'public final fun varargs (vararg xs: kotlin.String): kotlin.Int declared in <root>' type=kotlin.reflect.KFunction0<kotlin.Int> origin=null reflectionTarget=<same>
+  FUN name:testCtorStar visibility:public modality:FINAL <> () returnType:kotlin.Unit
+    BLOCK_BODY
+      CALL 'public final fun useKCallableStar (fn: kotlin.reflect.KCallable<*>): kotlin.Unit declared in <root>' type=kotlin.Unit origin=null
+        fn: FUNCTION_REFERENCE 'public constructor <init> (x: kotlin.String) [primary] declared in <root>.C' type=kotlin.reflect.KFunction0<<root>.C> origin=null reflectionTarget=<same>

compiler/testData/ir/irText/expressions/callableReferences/kt37131.fir.txt

@@ -0,0 +1,57 @@
+FILE fqName:<root> fileName:/kt37131.kt
+  FUN name:foo visibility:public modality:FINAL <> (x:kotlin.String) returnType:kotlin.String
+    VALUE_PARAMETER name:x index:0 type:kotlin.String
+      EXPRESSION_BODY
+        CONST String type=kotlin.String value=""
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun foo (x: kotlin.String): kotlin.String declared in <root>'
+        GET_VAR 'x: kotlin.String declared in <root>.foo' type=kotlin.String origin=null
+  CLASS CLASS name:C modality:FINAL visibility:public superTypes:[kotlin.Any]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.C
+    CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:<root>.C [primary]
+      VALUE_PARAMETER name:x index:0 type:kotlin.String
+        EXPRESSION_BODY
+          CONST String type=kotlin.String value=""
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:C modality:FINAL visibility:public superTypes:[kotlin.Any]'
+    PROPERTY name:x visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'x: kotlin.String declared in <root>.C.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:<root>.C) returnType:kotlin.String
+        correspondingProperty: PROPERTY name:x visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.C
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-x> (): kotlin.String declared in <root>.C'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.C declared in <root>.C.<get-x>' type=<root>.C origin=null
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  FUN name:use visibility:public modality:FINAL <> (fn:kotlin.Function0<kotlin.Any>) returnType:kotlin.Any
+    VALUE_PARAMETER name:fn index:0 type:kotlin.Function0<kotlin.Any>
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun use (fn: kotlin.Function0<kotlin.Any>): kotlin.Any declared in <root>'
+        CALL 'public abstract fun invoke (): R of kotlin.Function0 [operator] declared in kotlin.Function0' type=kotlin.Any origin=INVOKE
+          $this: GET_VAR 'fn: kotlin.Function0<kotlin.Any> declared in <root>.use' type=kotlin.Function0<kotlin.Any> origin=null
+  FUN name:testFn visibility:public modality:FINAL <> () returnType:kotlin.Any
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun testFn (): kotlin.Any declared in <root>'
+        CALL 'public final fun use (fn: kotlin.Function0<kotlin.Any>): kotlin.Any declared in <root>' type=kotlin.Any origin=null
+          fn: FUNCTION_REFERENCE 'public final fun foo (x: kotlin.String): kotlin.String declared in <root>' type=kotlin.reflect.KFunction0<kotlin.String> origin=null reflectionTarget=<same>
+  FUN name:testCtor visibility:public modality:FINAL <> () returnType:kotlin.Any
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun testCtor (): kotlin.Any declared in <root>'
+        CALL 'public final fun use (fn: kotlin.Function0<kotlin.Any>): kotlin.Any declared in <root>' type=kotlin.Any origin=null
+          fn: FUNCTION_REFERENCE 'public constructor <init> (x: kotlin.String) [primary] declared in <root>.C' type=kotlin.reflect.KFunction0<<root>.C> origin=null reflectionTarget=<same>

compiler/testData/ir/irText/expressions/callableReferences/kt37131.kt

@@ -0,0 +1,9 @@
+fun foo(x: String = ""): String = x
+
+class C(val x: String = "")
+
+fun use(fn: () -> Any) = fn()
+
+fun testFn() = use(::foo)
+
+fun testCtor() = use(::C)

compiler/testData/ir/irText/expressions/callableReferences/kt37131.txt

@@ -0,0 +1,67 @@
+FILE fqName:<root> fileName:/kt37131.kt
+  FUN name:foo visibility:public modality:FINAL <> (x:kotlin.String) returnType:kotlin.String
+    VALUE_PARAMETER name:x index:0 type:kotlin.String
+      EXPRESSION_BODY
+        CONST String type=kotlin.String value=""
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun foo (x: kotlin.String): kotlin.String declared in <root>'
+        GET_VAR 'x: kotlin.String declared in <root>.foo' type=kotlin.String origin=null
+  CLASS CLASS name:C modality:FINAL visibility:public superTypes:[kotlin.Any]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.C
+    CONSTRUCTOR visibility:public <> (x:kotlin.String) returnType:<root>.C [primary]
+      VALUE_PARAMETER name:x index:0 type:kotlin.String
+        EXPRESSION_BODY
+          CONST String type=kotlin.String value=""
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:C modality:FINAL visibility:public superTypes:[kotlin.Any]'
+    PROPERTY name:x visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'x: kotlin.String declared in <root>.C.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-x> visibility:public modality:FINAL <> ($this:<root>.C) returnType:kotlin.String
+        correspondingProperty: PROPERTY name:x visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.C
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-x> (): kotlin.String declared in <root>.C'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.C declared in <root>.C.<get-x>' type=<root>.C origin=null
+    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+  FUN name:use visibility:public modality:FINAL <> (fn:kotlin.Function0<kotlin.Any>) returnType:kotlin.Any
+    VALUE_PARAMETER name:fn index:0 type:kotlin.Function0<kotlin.Any>
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun use (fn: kotlin.Function0<kotlin.Any>): kotlin.Any declared in <root>'
+        CALL 'public abstract fun invoke (): R of kotlin.Function0 [operator] declared in kotlin.Function0' type=kotlin.Any origin=INVOKE
+          $this: GET_VAR 'fn: kotlin.Function0<kotlin.Any> declared in <root>.use' type=kotlin.Function0<kotlin.Any> origin=VARIABLE_AS_FUNCTION
+  FUN name:testFn visibility:public modality:FINAL <> () returnType:kotlin.Any
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun testFn (): kotlin.Any declared in <root>'
+        CALL 'public final fun use (fn: kotlin.Function0<kotlin.Any>): kotlin.Any declared in <root>' type=kotlin.Any origin=null
+          fn: BLOCK type=kotlin.reflect.KFunction0<kotlin.String> origin=null
+            FUN ADAPTER_FOR_CALLABLE_REFERENCE name:foo visibility:local modality:FINAL <> () returnType:kotlin.String
+              BLOCK_BODY
+                RETURN type=kotlin.Nothing from='local final fun foo (): kotlin.String declared in <root>.testFn'
+                  CALL 'public final fun foo (x: kotlin.String): kotlin.String declared in <root>' type=kotlin.String origin=null
+            FUNCTION_REFERENCE 'local final fun foo (): kotlin.String declared in <root>.testFn' type=kotlin.reflect.KFunction0<kotlin.String> origin=null reflectionTarget=null
+  FUN name:testCtor visibility:public modality:FINAL <> () returnType:kotlin.Any
+    BLOCK_BODY
+      RETURN type=kotlin.Nothing from='public final fun testCtor (): kotlin.Any declared in <root>'
+        CALL 'public final fun use (fn: kotlin.Function0<kotlin.Any>): kotlin.Any declared in <root>' type=kotlin.Any origin=null
+          fn: BLOCK type=kotlin.reflect.KFunction0<<root>.C> origin=null
+            FUN ADAPTER_FOR_CALLABLE_REFERENCE name:<init> visibility:local modality:FINAL <> () returnType:<root>.C
+              BLOCK_BODY
+                RETURN type=kotlin.Nothing from='local final fun <init> (): <root>.C declared in <root>.testCtor'
+                  CONSTRUCTOR_CALL 'public constructor <init> (x: kotlin.String) [primary] declared in <root>.C' type=<root>.C origin=null
+            FUNCTION_REFERENCE 'local final fun <init> (): <root>.C declared in <root>.testCtor' type=kotlin.reflect.KFunction0<<root>.C> origin=null reflectionTarget=null

compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java

@@ -1378,6 +1378,11 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
                 runTest("compiler/testData/ir/irText/expressions/callableReferences/constructorWithAdaptedArguments.kt");
             }
 
+            @TestMetadata("funWithDefaultParametersAsKCallableStar.kt")
+            public void testFunWithDefaultParametersAsKCallableStar() throws Exception {
+                runTest("compiler/testData/ir/irText/expressions/callableReferences/funWithDefaultParametersAsKCallableStar.kt");
+            }
+
             @TestMetadata("genericMember.kt")
             public void testGenericMember() throws Exception {
                 runTest("compiler/testData/ir/irText/expressions/callableReferences/genericMember.kt");
@@ -1388,6 +1393,11 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
                 runTest("compiler/testData/ir/irText/expressions/callableReferences/importedFromObject.kt");
             }
 
+            @TestMetadata("kt37131.kt")
+            public void testKt37131() throws Exception {
+                runTest("compiler/testData/ir/irText/expressions/callableReferences/kt37131.kt");
+            }
+
             @TestMetadata("typeArguments.kt")
             public void testTypeArguments() throws Exception {
                 runTest("compiler/testData/ir/irText/expressions/callableReferences/typeArguments.kt");