[FIR2IR] Properly generate arguments for annotation constructors calls in default values of annotation constructors

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/ClassMemberGenerator.kt

@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.fir.backend.generators
 
+import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.fir.backend.*
 import org.jetbrains.kotlin.fir.declarations.*
@@ -103,8 +104,9 @@ internal class ClassMemberGenerator(
                         irFunction.putParametersInScope(firFunction)
                     }
                 }
+                val annotationMode = containingClass?.classKind == ClassKind.ANNOTATION_CLASS && irFunction is IrConstructor
                 for ((valueParameter, firValueParameter) in valueParameters.zip(firFunction.valueParameters)) {
-                    valueParameter.setDefaultValue(firValueParameter)
+                    valueParameter.setDefaultValue(firValueParameter, annotationMode)
                     annotationGenerator.generate(valueParameter, firValueParameter, irFunction is IrConstructor)
                 }
                 annotationGenerator.generate(irFunction, firFunction)
@@ -345,10 +347,10 @@ internal class ClassMemberGenerator(
         }
     }
 
-    private fun IrValueParameter.setDefaultValue(firValueParameter: FirValueParameter) {
+    private fun IrValueParameter.setDefaultValue(firValueParameter: FirValueParameter, annotationMode: Boolean) {
         val firDefaultValue = firValueParameter.defaultValue
         if (firDefaultValue != null) {
-            this.defaultValue = factory.createExpressionBody(visitor.convertToIrExpression(firDefaultValue))
+            this.defaultValue = factory.createExpressionBody(visitor.convertToIrExpression(firDefaultValue, annotationMode))
         }
     }
 }

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirBlackBoxCodegenTestGenerated.java

@@ -89,6 +89,12 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/annotations/annotationWithKotlinPropertyFromInterfaceCompanion.kt");
         }
 
+        @Test
+        @TestMetadata("annotationWithVarargAsDefaultValue.kt")
+        public void testAnnotationWithVarargAsDefaultValue() throws Exception {
+            runTest("compiler/testData/codegen/box/annotations/annotationWithVarargAsDefaultValue.kt");
+        }
+
         @Test
         @TestMetadata("annotationsOnDefault.kt")
         public void testAnnotationsOnDefault() throws Exception {

compiler/testData/codegen/box/annotations/annotationWithVarargAsDefaultValue.kt

@@ -0,0 +1,13 @@
+// TARGET_BACKEND: JVM_IR
+
+annotation class MyReplaceWith(val x: String, vararg val y: String)
+
+annotation class MyDeprecated(
+    val replaceWith: MyReplaceWith = MyReplaceWith(""),
+)
+
+fun getInt(x: String, vararg y: String): Int = 1
+
+fun test(x: Int = getInt("")) {}
+
+fun box() = "OK"

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java

@@ -89,6 +89,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/annotations/annotationWithKotlinPropertyFromInterfaceCompanion.kt");
         }
 
+        @Test
+        @TestMetadata("annotationWithVarargAsDefaultValue.kt")
+        public void testAnnotationWithVarargAsDefaultValue() throws Exception {
+            runTest("compiler/testData/codegen/box/annotations/annotationWithVarargAsDefaultValue.kt");
+        }
+
         @Test
         @TestMetadata("annotationsOnDefault.kt")
         public void testAnnotationsOnDefault() throws Exception {