Don't report UNUSED_PARAMETER in main from object #KT-37718 Fixed

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

@@ -742,6 +742,11 @@ public class FirOldFrontendDiagnosticsTestWithStdlibGenerated extends AbstractFi
                 runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/localFun_LL13.kt");
             }
 
+            @TestMetadata("mainInObject.kt")
+            public void testMainInObject() throws Exception {
+                runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/mainInObject.kt");
+            }
+
             @TestMetadata("property.kt")
             public void testProperty() throws Exception {
                 runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/property.kt");

compiler/frontend/src/org/jetbrains/kotlin/cfg/ControlFlowInformationProvider.kt

@@ -745,6 +745,11 @@ class ControlFlowInformationProvider private constructor(
                             }
                             return
                         }
+                        else -> {
+                            if (owner.containingClassOrObject != null) {
+                                return
+                            }
+                        }
                     }
                 }
                 if (functionDescriptor.isOperator && functionName in OperatorNameConventions.DELEGATED_PROPERTY_OPERATORS) {

compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/mainInObject.kt

@@ -0,0 +1,6 @@
+// FIR_IDENTICAL
+object Test {
+    @JvmStatic
+    fun main(args: Array<String>) {
+    }
+}

compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/mainInObject.txt

@@ -0,0 +1,9 @@
+package
+
+public object Test {
+    private constructor Test()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    @kotlin.jvm.JvmStatic public final fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

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

@@ -743,6 +743,11 @@ public class DiagnosticsTestWithStdLibGenerated extends AbstractDiagnosticsTestW
                 runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/localFun_LL13.kt");
             }
 
+            @TestMetadata("mainInObject.kt")
+            public void testMainInObject() throws Exception {
+                runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/mainInObject.kt");
+            }
+
             @TestMetadata("property.kt")
             public void testProperty() throws Exception {
                 runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/property.kt");

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

@@ -743,6 +743,11 @@ public class DiagnosticsTestWithStdLibUsingJavacGenerated extends AbstractDiagno
                 runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/localFun_LL13.kt");
             }
 
+            @TestMetadata("mainInObject.kt")
+            public void testMainInObject() throws Exception {
+                runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/mainInObject.kt");
+            }
+
             @TestMetadata("property.kt")
             public void testProperty() throws Exception {
                 runTest("compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/property.kt");