diff --git a/native/native.tests/tests/org/jetbrains/kotlin/konan/test/blackbox/CompilerOutputTest.kt b/native/native.tests/tests/org/jetbrains/kotlin/konan/test/blackbox/CompilerOutputTest.kt
index 1a3269df998..2e2645c70d8 100644
--- a/native/native.tests/tests/org/jetbrains/kotlin/konan/test/blackbox/CompilerOutputTest.kt
+++ b/native/native.tests/tests/org/jetbrains/kotlin/konan/test/blackbox/CompilerOutputTest.kt
@@ -129,6 +129,10 @@ abstract class CompilerOutputTestBase : AbstractNativeSimpleTest() {
     internal fun TestCompilationResult<*>.toOutput(): String {
         check(this is TestCompilationResult.ImmediateResult<*>) { this }
         val loggedData = this.loggedData
+
+        // Debug output for KT-64822 investigation
+        println("Compiler logged data:\n$loggedData")
+
         check(loggedData is LoggedData.CompilationToolCall) { loggedData::class }
         return normalizeOutput(loggedData.toolOutput, loggedData.exitCode)
     }