From c74453d8d2ed6cf2c68b7f6e053209db8f88e0fb Mon Sep 17 00:00:00 2001
From: Xin Wang <scaventz@outlook.com>
Date: Mon, 29 Nov 2021 19:27:48 +0800
Subject: [PATCH] JVM_IR KT-48987 handle star projection arguments in smart
 casts

---
 .../codegen/FirBlackBoxCodegenTestGenerated.java     |  6 ++++++
 .../backend/jvm/lower/FunctionReferenceLowering.kt   |  7 ++++++-
 compiler/testData/codegen/box/casts/kt48987.kt       | 12 ++++++++++++
 .../codegen/IrBlackBoxCodegenTestGenerated.java      |  6 ++++++
 4 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 compiler/testData/codegen/box/casts/kt48987.kt

diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java
index 2d43e3427f3..588286bd376 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java
@@ -4589,6 +4589,12 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/casts/kt48927_privateMethodOnDerivedCastToBase.kt");
         }
 
+        @Test
+        @TestMetadata("kt48987.kt")
+        public void testKt48987() throws Exception {
+            runTest("compiler/testData/codegen/box/casts/kt48987.kt");
+        }
+
         @Test
         @TestMetadata("lambdaToUnitCast.kt")
         public void testLambdaToUnitCast() throws Exception {
diff --git a/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/FunctionReferenceLowering.kt b/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/FunctionReferenceLowering.kt
index b89e3a47a6e..4ebd9abb517 100644
--- a/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/FunctionReferenceLowering.kt
+++ b/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/FunctionReferenceLowering.kt
@@ -532,7 +532,12 @@ internal class FunctionReferenceLowering(private val context: JvmBackendContext)
             else irFunctionReference.getArgumentsWithIr().singleOrNull()
 
         // The type of the reference is KFunction<in A1, ..., in An, out R>
-        private val parameterTypes = (irFunctionReference.type as IrSimpleType).arguments.map { (it as IrTypeProjection).type }
+        private val parameterTypes = (irFunctionReference.type as IrSimpleType).arguments.map {
+            when (it) {
+                is IrTypeProjection -> it.type
+                else -> context.irBuiltIns.anyNType
+            }
+        }
         private val argumentTypes = parameterTypes.dropLast(1)
         private val referenceReturnType = parameterTypes.last()
 
diff --git a/compiler/testData/codegen/box/casts/kt48987.kt b/compiler/testData/codegen/box/casts/kt48987.kt
new file mode 100644
index 00000000000..0efb3603418
--- /dev/null
+++ b/compiler/testData/codegen/box/casts/kt48987.kt
@@ -0,0 +1,12 @@
+// TARGET_BACKEND: JVM_IR
+// WITH_STDLIB
+
+fun box(): String {
+    return try {
+        val range1 = 0..1
+        range1 as List<Double>
+        range1.joinToString { "" }
+    } catch (e: java.lang.ClassCastException) {
+        "OK"
+    }
+}
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
index e5c06e18b8b..f1d9ed1bc4b 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
@@ -4589,6 +4589,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/casts/kt48927_privateMethodOnDerivedCastToBase.kt");
         }
 
+        @Test
+        @TestMetadata("kt48987.kt")
+        public void testKt48987() throws Exception {
+            runTest("compiler/testData/codegen/box/casts/kt48987.kt");
+        }
+
         @Test
         @TestMetadata("lambdaToUnitCast.kt")
         public void testLambdaToUnitCast() throws Exception {