Add regression test for already fixed issue KT-41885

compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirOldFrontendDiagnosticsTestWithStdlibGenerated.java

@@ -3200,6 +3200,11 @@ public class FirOldFrontendDiagnosticsTestWithStdlibGenerated extends AbstractFi
                     runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/kt38799.kt");
                 }
 
+                @TestMetadata("manyArguments.kt")
+                public void testManyArguments() throws Exception {
+                    runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/manyArguments.kt");
+                }
+
                 @TestMetadata("moreSpecificOutputType.kt")
                 public void testMoreSpecificOutputType() throws Exception {
                     runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/moreSpecificOutputType.kt");

compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/manyArguments.kt

@@ -0,0 +1,21 @@
+// FIR_IDENTICAL
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+
+fun main() {
+    val list: List<Int.() -> Unit> = listOf({}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {})
+
+    val map: Map<Int, Int.() -> Unit> = mapOf(
+        1 to {},
+        2 to {},
+        3 to {},
+        4 to {},
+        5 to {},
+        6 to {},
+        7 to {},
+        8 to {},
+        9 to {},
+        10 to {},
+        11 to {},
+        12 to {}
+    )
+}

compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/manyArguments.txt

@@ -0,0 +1,3 @@
+package
+
+public fun main(): kotlin.Unit

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestWithStdLibGenerated.java

@@ -3350,6 +3350,11 @@ public class DiagnosticsTestWithStdLibGenerated extends AbstractDiagnosticsTestW
                     runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/kt38799.kt");
                 }
 
+                @TestMetadata("manyArguments.kt")
+                public void testManyArguments() throws Exception {
+                    runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/manyArguments.kt");
+                }
+
                 @TestMetadata("moreSpecificOutputType.kt")
                 public void testMoreSpecificOutputType() throws Exception {
                     runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/moreSpecificOutputType.kt");

compiler/tests/org/jetbrains/kotlin/checkers/javac/DiagnosticsTestWithStdLibUsingJavacGenerated.java

@@ -3350,6 +3350,11 @@ public class DiagnosticsTestWithStdLibUsingJavacGenerated extends AbstractDiagno
                     runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/kt38799.kt");
                 }
 
+                @TestMetadata("manyArguments.kt")
+                public void testManyArguments() throws Exception {
+                    runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/manyArguments.kt");
+                }
+
                 @TestMetadata("moreSpecificOutputType.kt")
                 public void testMoreSpecificOutputType() throws Exception {
                     runTest("compiler/testData/diagnostics/testsWithStdLib/inference/completion/postponedArgumentsAnalysis/moreSpecificOutputType.kt");