K2: add test confirming successful work of KT-56261

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerFirTestdataTestGenerated.java

@@ -2866,6 +2866,12 @@ public class DiagnosisCompilerFirTestdataTestGenerated extends AbstractDiagnosis
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariable.kt");
                 }
 
+                @Test
+                @TestMetadata("localVariableInSecondaryConstructor.kt")
+                public void testLocalVariableInSecondaryConstructor() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariableInSecondaryConstructor.kt");
+                }
+
                 @Test
                 @TestMetadata("manyLocalVariables.kt")
                 public void testManyLocalVariables() throws Exception {

compiler/fir/analysis-tests/legacy-fir-tests/tests-gen/org/jetbrains/kotlin/fir/LazyBodyIsNotTouchedTilContractsPhaseTestGenerated.java

@@ -2512,6 +2512,11 @@ public class LazyBodyIsNotTouchedTilContractsPhaseTestGenerated extends Abstract
                 runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariable.kt");
             }
 
+            @TestMetadata("localVariableInSecondaryConstructor.kt")
+            public void testLocalVariableInSecondaryConstructor() throws Exception {
+                runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariableInSecondaryConstructor.kt");
+            }
+
             @TestMetadata("manyLocalVariables.kt")
             public void testManyLocalVariables() throws Exception {
                 runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/manyLocalVariables.kt");

compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariableInSecondaryConstructor.fir.txt

@@ -0,0 +1,19 @@
+FILE: localVariableInSecondaryConstructor.kt
+    public final fun main(): R|kotlin/Unit| {
+        lval localVariable: R|kotlin/Int| = Int(0)
+        local final class LocalClass : R|kotlin/Any| {
+            public constructor(arg: R|kotlin/Int|): R|LocalClass| {
+                super<R|kotlin/Any|>()
+            }
+
+            public final val arg: R|kotlin/Int| = R|<local>/arg|
+                public get(): R|kotlin/Int|
+
+            public constructor(): R|LocalClass| {
+                this<R|LocalClass|>(R|<local>/localVariable|)
+            }
+
+        }
+
+        R|/LocalClass.LocalClass|().R|<local>/arg|
+    }

compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariableInSecondaryConstructor.kt

@@ -0,0 +1,10 @@
+fun main() {
+
+    val localVariable = 0
+
+    class LocalClass(val arg: Int) {
+        constructor() : this(localVariable)
+    }
+
+    LocalClass().arg
+}

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirDiagnosticTestGenerated.java

@@ -2866,6 +2866,12 @@ public class FirDiagnosticTestGenerated extends AbstractFirDiagnosticTest {
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariable.kt");
                 }
 
+                @Test
+                @TestMetadata("localVariableInSecondaryConstructor.kt")
+                public void testLocalVariableInSecondaryConstructor() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariableInSecondaryConstructor.kt");
+                }
+
                 @Test
                 @TestMetadata("manyLocalVariables.kt")
                 public void testManyLocalVariables() throws Exception {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirDiagnosticsWithLightTreeTestGenerated.java

@@ -2866,6 +2866,12 @@ public class FirDiagnosticsWithLightTreeTestGenerated extends AbstractFirDiagnos
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariable.kt");
                 }
 
+                @Test
+                @TestMetadata("localVariableInSecondaryConstructor.kt")
+                public void testLocalVariableInSecondaryConstructor() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/localVariableInSecondaryConstructor.kt");
+                }
+
                 @Test
                 @TestMetadata("manyLocalVariables.kt")
                 public void testManyLocalVariables() throws Exception {