[FIR2IR] Fix crash caused by unresolved annotation argument in deserialized class

#KT-60181 Fixed

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrVisitor.kt

@@ -43,6 +43,7 @@ import org.jetbrains.kotlin.ir.expressions.impl.*
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.impl.IrValueParameterSymbolImpl
 import org.jetbrains.kotlin.ir.types.*
+import org.jetbrains.kotlin.ir.types.impl.IrErrorClassImpl
 import org.jetbrains.kotlin.ir.types.impl.IrErrorTypeImpl
 import org.jetbrains.kotlin.ir.util.constructors
 import org.jetbrains.kotlin.ir.util.defaultConstructor
@@ -1414,6 +1415,11 @@ class Fir2IrVisitor(
             }
             is FirClassReferenceExpression -> {
                 (argument.classTypeRef.coneType.lowerBoundIfFlexible() as? ConeClassLikeType)?.toIrClassSymbol()
+                // A null value means we have some unresolved code, possibly in a binary dependency that's missing a transitive dependency,
+                // see KT-60181.
+                // Returning null will lead to convertToIrExpression(argument) being called below which leads to a crash.
+                // Instead, we return an error symbol.
+                    ?: IrErrorClassImpl.symbol
             }
             else -> null
         }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/K2Tests.kt

@@ -120,4 +120,21 @@ class CustomK2Tests : KGPBaseTest() {
             }
         }
     }
+
+    @GradleTest
+    @DisplayName("Java binary dependency class contains unresolved annotation argument. KT-60181")
+    fun kt60181JavaDependencyAnnotatedWithUnresolved(gradleVersion: GradleVersion) {
+        with(
+            project(
+                "k2-java-dep-unresolved-annotation-argument",
+                gradleVersion,
+                buildOptions = defaultBuildOptions.copy(languageVersion = "2.0"),
+            )
+        ) {
+            val taskToExecute = ":compileKotlin"
+            build(taskToExecute) {
+                assertTasksExecuted(taskToExecute)
+            }
+        }
+    }
 }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/k2-java-dep-unresolved-annotation-argument/build.gradle.kts

@@ -0,0 +1,14 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+    kotlin("jvm")
+}
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+}
+
+dependencies {
+    implementation("org.springframework.boot:spring-boot-actuator-autoconfigure:2.7.12")
+}

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/k2-java-dep-unresolved-annotation-argument/src/main/kotlin/Main.kt

@@ -0,0 +1,18 @@
+import org.springframework.beans.factory.ObjectProvider
+import org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthContributorAutoConfiguration
+import org.springframework.boot.actuate.autoconfigure.jdbc.DataSourceHealthIndicatorProperties
+import org.springframework.boot.actuate.health.HealthContributor
+import org.springframework.boot.jdbc.metadata.DataSourcePoolMetadataProvider
+import javax.sql.DataSource
+
+class MyDataSourceHealthContributorAutoConfiguration(
+        metadataProviders: ObjectProvider<DataSourcePoolMetadataProvider>,
+) : DataSourceHealthContributorAutoConfiguration(metadataProviders) {
+    override fun dbHealthContributor(
+            dataSources: MutableMap<String, DataSource>,
+            dataSourceHealthIndicatorProperties: DataSourceHealthIndicatorProperties,
+    ): HealthContributor? {
+        return super.dbHealthContributor(dataSources, dataSourceHealthIndicatorProperties)
+    }
+}
+