Properly find invoke method on default lambda inlining

In general case parameter type could differ from actual default lambda type.
  E.g.: fun inlineFun(s: (Child) -> Base = { a: Base -> a as Child}),
  where type of default lambda is '(Base) -> Child'.
  In such case we should find somehow actual invoke method in bytecode knowing
  only name, number of parameters and that's actual invoke is non-synthetic
  regardless of bridge one.

  #KT-21946 Fixed

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/LambdaInfo.kt

@@ -157,17 +157,18 @@ class DefaultLambda(
 
         isBoundCallableReference = (isFunctionReference || isPropertyReference) && capturedVars.isNotEmpty()
 
-        invokeMethod = Method(
-            (if (isPropertyReference) OperatorNameConventions.GET else OperatorNameConventions.INVOKE).asString(),
-            sourceCompiler.state.typeMapper.mapSignatureSkipGeneric(invokeMethodDescriptor).asmMethod.descriptor
-        )
+        val methodName = (if (isPropertyReference) OperatorNameConventions.GET else OperatorNameConventions.INVOKE).asString()
+        val signature = sourceCompiler.state.typeMapper.mapSignatureSkipGeneric(invokeMethodDescriptor).asmMethod.descriptor
 
         node = getMethodNode(
             classReader.b,
-            invokeMethod.name,
-            invokeMethod.descriptor,
-            lambdaClassType
-        ) ?: error("Can't find method '${invokeMethod.name}${invokeMethod.descriptor}' in '${classReader.className}'")
+            methodName,
+            signature,
+            lambdaClassType,
+            signatureAmbiguity = true
+        ) ?: error("Can't find method '$methodName$signature' in '${classReader.className}'")
+
+        invokeMethod = Method(node.node.name, node.node.desc)
 
         if (needReification) {
             //nested classes could also require reification

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/inlineCodegenUtils.kt

@@ -88,7 +88,8 @@ internal fun getMethodNode(
     classData: ByteArray,
     methodName: String,
     methodDescriptor: String,
-    classType: Type
+    classType: Type,
+    signatureAmbiguity: Boolean = false
 ): SMAPAndMethodNode? {
     val cr = ClassReader(classData)
     var node: MethodNode? = null
@@ -112,17 +113,28 @@ internal fun getMethodNode(
             signature: String?,
             exceptions: Array<String>?
         ): MethodVisitor? {
-            if (methodName == name && methodDescriptor == desc) {
-                node = object : MethodNode(Opcodes.API_VERSION, access, name, desc, signature, exceptions) {
-                    override fun visitLineNumber(line: Int, start: Label) {
-                        super.visitLineNumber(line, start)
-                        lines[0] = Math.min(lines[0], line)
-                        lines[1] = Math.max(lines[1], line)
-                    }
+            if (methodName != name || (signatureAmbiguity && access.and(Opcodes.ACC_SYNTHETIC) != 0)) return null
+
+            if (methodDescriptor != desc) {
+                val sameNumberOfParameters = Type.getArgumentTypes(methodDescriptor).size == Type.getArgumentTypes(desc).size
+                if (!signatureAmbiguity || !sameNumberOfParameters) {
+                    return null
                 }
-                return node
             }
-            return null
+
+            node?.let { existing ->
+                throw AssertionError("Can't find proper '$name' method for inline: ambiguity between '${existing.name + existing.desc}' and '${name + desc}'")
+            }
+
+            return object : MethodNode(Opcodes.API_VERSION, access, name, desc, signature, exceptions) {
+                override fun visitLineNumber(line: Int, start: Label) {
+                    super.visitLineNumber(line, start)
+                    lines[0] = Math.min(lines[0], line)
+                    lines[1] = Math.max(lines[1], line)
+                }
+            }.also {
+                node = it
+            }
         }
     }, ClassReader.SKIP_FRAMES or if (GENERATE_SMAP) 0 else ClassReader.SKIP_DEBUG)
 

compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature.kt

@@ -0,0 +1,22 @@
+// IGNORE_BACKEND: JVM_IR
+// FILE: 1.kt
+// SKIP_INLINE_CHECK_IN: inlineFun$default
+package test
+
+open class Base
+
+class Child(val value: String) : Base()
+
+fun foo(a: Base): Child = a as Child
+
+
+inline fun inlineFun(s: (Child) -> Base = ::foo): Base {
+    return s(Child("OK"))
+}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    return (inlineFun() as Child).value
+}

compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature2.kt

@@ -0,0 +1,17 @@
+// IGNORE_BACKEND: JVM_IR
+// FILE: 1.kt
+// SKIP_INLINE_CHECK_IN: inlineFun$default
+package test
+
+fun foo(a: Number): String = "OK"
+
+inline fun inlineFun(s: (Double) -> String = ::foo): String {
+    return s(1.0)
+}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    return inlineFun()
+}

compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/differentInvokeSignature.kt

@@ -0,0 +1,19 @@
+// IGNORE_BACKEND: JVM_IR
+// FILE: 1.kt
+// SKIP_INLINE_CHECK_IN: inlineFun$default
+package test
+
+
+open class Base
+class Child(val value: String): Base()
+
+inline fun inlineFun(s: (Child) -> Base = { a: Base -> a as Child}): Base {
+    return s(Child("OK"))
+}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    return (inlineFun() as Child).value
+}

compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21946.kt

@@ -0,0 +1,21 @@
+// IGNORE_BACKEND: JVM_IR
+// FILE: 1.kt
+// NO_CHECK_LAMBDA_INLINING
+package test
+
+interface Call {
+    fun run(): String
+}
+
+inline fun test(p: String, s: () -> Call = {
+    object : Call {
+        override fun run() = p
+    }
+}) = s()
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    return test("OK").run()
+}

compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt24477.kt

@@ -0,0 +1,17 @@
+// IGNORE_BACKEND: JVM_IR
+// FILE: 1.kt
+// SKIP_INLINE_CHECK_IN: inlineFun$default
+package test
+
+class Item
+
+inline fun inlineFun(number: String, getItem: ((String) -> String?) = { null }): String {
+    return number + (getItem(number) ?: "")
+}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    return inlineFun("OK")
+}

compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt25106.kt

@@ -0,0 +1,15 @@
+// IGNORE_BACKEND: JVM_IR
+// FILE: 1.kt
+// SKIP_INLINE_CHECK_IN: inlineFun$default
+package test
+
+inline fun inlineFun(action: () -> Any = { "OK" }): Any {
+    return action()
+}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    return inlineFun() as String
+}

compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt26636.kt

@@ -0,0 +1,25 @@
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND: JVM_IR
+// WITH_RUNTIME
+// FILE: 1.kt
+// SKIP_INLINE_CHECK_IN: enumOrThrow$default
+package test
+
+enum class TarEnum {
+    OK
+}
+inline fun <reified T : Enum<T>> String?.enumOrNull(): T? {
+    this ?: return null
+    return enumValues<T>().firstOrNull { it.name == this }
+}
+
+inline fun <reified T : Enum<T>> String?.enumOrThrow(handleNull: () -> Throwable = { IllegalArgumentException("Enum type ${T::class.java} not contain value=$this") }): T {
+    return this.enumOrNull<T>() ?: throw handleNull()
+}
+
+// FILE: 2.kt
+import test.*
+
+fun box(): String {
+    return "OK".enumOrThrow<TarEnum>()!!.name
+}

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxInlineCodegenTestGenerated.java

@@ -1214,6 +1214,11 @@ public class BlackBoxInlineCodegenTestGenerated extends AbstractBlackBoxInlineCo
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/defaultLambdaInNoInline.kt");
             }
 
+            @TestMetadata("differentInvokeSignature.kt")
+            public void testDifferentInvokeSignature() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/differentInvokeSignature.kt");
+            }
+
             @TestMetadata("genericLambda.kt")
             public void testGenericLambda() throws Exception {
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/genericLambda.kt");
@@ -1239,6 +1244,26 @@ public class BlackBoxInlineCodegenTestGenerated extends AbstractBlackBoxInlineCo
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21827.kt");
             }
 
+            @TestMetadata("kt21946.kt")
+            public void testKt21946() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21946.kt");
+            }
+
+            @TestMetadata("kt24477.kt")
+            public void testKt24477() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt24477.kt");
+            }
+
+            @TestMetadata("kt25106.kt")
+            public void testKt25106() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt25106.kt");
+            }
+
+            @TestMetadata("kt26636.kt")
+            public void testKt26636() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt26636.kt");
+            }
+
             @TestMetadata("noInline.kt")
             public void testNoInline() throws Exception {
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/noInline.kt");
@@ -1356,6 +1381,16 @@ public class BlackBoxInlineCodegenTestGenerated extends AbstractBlackBoxInlineCo
                     runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/constuctorReference.kt");
                 }
 
+                @TestMetadata("differentInvokeSignature.kt")
+                public void testDifferentInvokeSignature() throws Exception {
+                    runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature.kt");
+                }
+
+                @TestMetadata("differentInvokeSignature2.kt")
+                public void testDifferentInvokeSignature2() throws Exception {
+                    runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature2.kt");
+                }
+
                 @TestMetadata("functionImportedFromObject.kt")
                 public void testFunctionImportedFromObject() throws Exception {
                     runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/functionImportedFromObject.kt");

compiler/tests/org/jetbrains/kotlin/codegen/CompileKotlinAgainstInlineKotlinTestGenerated.java

@@ -1214,6 +1214,11 @@ public class CompileKotlinAgainstInlineKotlinTestGenerated extends AbstractCompi
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/defaultLambdaInNoInline.kt");
             }
 
+            @TestMetadata("differentInvokeSignature.kt")
+            public void testDifferentInvokeSignature() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/differentInvokeSignature.kt");
+            }
+
             @TestMetadata("genericLambda.kt")
             public void testGenericLambda() throws Exception {
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/genericLambda.kt");
@@ -1239,6 +1244,26 @@ public class CompileKotlinAgainstInlineKotlinTestGenerated extends AbstractCompi
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21827.kt");
             }
 
+            @TestMetadata("kt21946.kt")
+            public void testKt21946() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21946.kt");
+            }
+
+            @TestMetadata("kt24477.kt")
+            public void testKt24477() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt24477.kt");
+            }
+
+            @TestMetadata("kt25106.kt")
+            public void testKt25106() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt25106.kt");
+            }
+
+            @TestMetadata("kt26636.kt")
+            public void testKt26636() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt26636.kt");
+            }
+
             @TestMetadata("noInline.kt")
             public void testNoInline() throws Exception {
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/noInline.kt");
@@ -1356,6 +1381,16 @@ public class CompileKotlinAgainstInlineKotlinTestGenerated extends AbstractCompi
                     runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/constuctorReference.kt");
                 }
 
+                @TestMetadata("differentInvokeSignature.kt")
+                public void testDifferentInvokeSignature() throws Exception {
+                    runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature.kt");
+                }
+
+                @TestMetadata("differentInvokeSignature2.kt")
+                public void testDifferentInvokeSignature2() throws Exception {
+                    runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature2.kt");
+                }
+
                 @TestMetadata("functionImportedFromObject.kt")
                 public void testFunctionImportedFromObject() throws Exception {
                     runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/functionImportedFromObject.kt");

compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxInlineCodegenTestGenerated.java

@@ -1214,6 +1214,11 @@ public class IrBlackBoxInlineCodegenTestGenerated extends AbstractIrBlackBoxInli
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/defaultLambdaInNoInline.kt");
             }
 
+            @TestMetadata("differentInvokeSignature.kt")
+            public void testDifferentInvokeSignature() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/differentInvokeSignature.kt");
+            }
+
             @TestMetadata("genericLambda.kt")
             public void testGenericLambda() throws Exception {
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/genericLambda.kt");
@@ -1239,6 +1244,26 @@ public class IrBlackBoxInlineCodegenTestGenerated extends AbstractIrBlackBoxInli
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21827.kt");
             }
 
+            @TestMetadata("kt21946.kt")
+            public void testKt21946() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21946.kt");
+            }
+
+            @TestMetadata("kt24477.kt")
+            public void testKt24477() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt24477.kt");
+            }
+
+            @TestMetadata("kt25106.kt")
+            public void testKt25106() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt25106.kt");
+            }
+
+            @TestMetadata("kt26636.kt")
+            public void testKt26636() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt26636.kt");
+            }
+
             @TestMetadata("noInline.kt")
             public void testNoInline() throws Exception {
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/noInline.kt");
@@ -1356,6 +1381,16 @@ public class IrBlackBoxInlineCodegenTestGenerated extends AbstractIrBlackBoxInli
                     runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/constuctorReference.kt");
                 }
 
+                @TestMetadata("differentInvokeSignature.kt")
+                public void testDifferentInvokeSignature() throws Exception {
+                    runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature.kt");
+                }
+
+                @TestMetadata("differentInvokeSignature2.kt")
+                public void testDifferentInvokeSignature2() throws Exception {
+                    runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature2.kt");
+                }
+
                 @TestMetadata("functionImportedFromObject.kt")
                 public void testFunctionImportedFromObject() throws Exception {
                     runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/functionImportedFromObject.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/InlineDefaultValuesTestsGenerated.java

@@ -176,6 +176,11 @@ public class InlineDefaultValuesTestsGenerated extends AbstractInlineDefaultValu
             runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/defaultLambdaInNoInline.kt");
         }
 
+        @TestMetadata("differentInvokeSignature.kt")
+        public void testDifferentInvokeSignature() throws Exception {
+            runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/differentInvokeSignature.kt");
+        }
+
         @TestMetadata("genericLambda.kt")
         public void testGenericLambda() throws Exception {
             runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/genericLambda.kt");
@@ -196,6 +201,21 @@ public class InlineDefaultValuesTestsGenerated extends AbstractInlineDefaultValu
             runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21827.kt");
         }
 
+        @TestMetadata("kt21946.kt")
+        public void testKt21946() throws Exception {
+            runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21946.kt");
+        }
+
+        @TestMetadata("kt24477.kt")
+        public void testKt24477() throws Exception {
+            runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt24477.kt");
+        }
+
+        @TestMetadata("kt25106.kt")
+        public void testKt25106() throws Exception {
+            runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt25106.kt");
+        }
+
         @TestMetadata("noInline.kt")
         public void testNoInline() throws Exception {
             runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/noInline.kt");
@@ -313,6 +333,16 @@ public class InlineDefaultValuesTestsGenerated extends AbstractInlineDefaultValu
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/constuctorReference.kt");
             }
 
+            @TestMetadata("differentInvokeSignature.kt")
+            public void testDifferentInvokeSignature() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature.kt");
+            }
+
+            @TestMetadata("differentInvokeSignature2.kt")
+            public void testDifferentInvokeSignature2() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature2.kt");
+            }
+
             @TestMetadata("functionImportedFromObject.kt")
             public void testFunctionImportedFromObject() throws Exception {
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/functionImportedFromObject.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/IrInlineDefaultValuesTestsGenerated.java

@@ -176,6 +176,11 @@ public class IrInlineDefaultValuesTestsGenerated extends AbstractIrInlineDefault
             runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/defaultLambdaInNoInline.kt");
         }
 
+        @TestMetadata("differentInvokeSignature.kt")
+        public void testDifferentInvokeSignature() throws Exception {
+            runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/differentInvokeSignature.kt");
+        }
+
         @TestMetadata("genericLambda.kt")
         public void testGenericLambda() throws Exception {
             runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/genericLambda.kt");
@@ -196,6 +201,21 @@ public class IrInlineDefaultValuesTestsGenerated extends AbstractIrInlineDefault
             runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21827.kt");
         }
 
+        @TestMetadata("kt21946.kt")
+        public void testKt21946() throws Exception {
+            runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt21946.kt");
+        }
+
+        @TestMetadata("kt24477.kt")
+        public void testKt24477() throws Exception {
+            runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt24477.kt");
+        }
+
+        @TestMetadata("kt25106.kt")
+        public void testKt25106() throws Exception {
+            runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/kt25106.kt");
+        }
+
         @TestMetadata("noInline.kt")
         public void testNoInline() throws Exception {
             runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/noInline.kt");
@@ -313,6 +333,16 @@ public class IrInlineDefaultValuesTestsGenerated extends AbstractIrInlineDefault
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/constuctorReference.kt");
             }
 
+            @TestMetadata("differentInvokeSignature.kt")
+            public void testDifferentInvokeSignature() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature.kt");
+            }
+
+            @TestMetadata("differentInvokeSignature2.kt")
+            public void testDifferentInvokeSignature2() throws Exception {
+                runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/differentInvokeSignature2.kt");
+            }
+
             @TestMetadata("functionImportedFromObject.kt")
             public void testFunctionImportedFromObject() throws Exception {
                 runTest("compiler/testData/codegen/boxInline/defaultValues/lambdaInlining/callableReferences/functionImportedFromObject.kt");