[FIR] Reproduce KT-62473

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFE10TestdataTestGenerated.java

@@ -1251,6 +1251,12 @@ public class DiagnosticCompilerTestFE10TestdataTestGenerated extends AbstractDia
             runTest("compiler/testData/diagnostics/tests/suppressInWhen.kt");
         }
 
+        @Test
+        @TestMetadata("suppressOnPlusAssign.kt")
+        public void testSuppressOnPlusAssign() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/suppressOnPlusAssign.kt");
+        }
+
         @Test
         @TestMetadata("suspendConflictingOverloads.kt")
         public void testSuspendConflictingOverloads() throws Exception {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated.java

@@ -1251,6 +1251,12 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFE10TestDataTestGenerated
             runTest("compiler/testData/diagnostics/tests/suppressInWhen.kt");
         }
 
+        @Test
+        @TestMetadata("suppressOnPlusAssign.kt")
+        public void testSuppressOnPlusAssign() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/suppressOnPlusAssign.kt");
+        }
+
         @Test
         @TestMetadata("suspendConflictingOverloads.kt")
         public void testSuspendConflictingOverloads() throws Exception {

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

@@ -1251,6 +1251,12 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
             runTest("compiler/testData/diagnostics/tests/suppressInWhen.kt");
         }
 
+        @Test
+        @TestMetadata("suppressOnPlusAssign.kt")
+        public void testSuppressOnPlusAssign() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/suppressOnPlusAssign.kt");
+        }
+
         @Test
         @TestMetadata("suspendConflictingOverloads.kt")
         public void testSuspendConflictingOverloads() throws Exception {

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

@@ -1251,6 +1251,12 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
             runTest("compiler/testData/diagnostics/tests/suppressInWhen.kt");
         }
 
+        @Test
+        @TestMetadata("suppressOnPlusAssign.kt")
+        public void testSuppressOnPlusAssign() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/suppressOnPlusAssign.kt");
+        }
+
         @Test
         @TestMetadata("suspendConflictingOverloads.kt")
         public void testSuspendConflictingOverloads() throws Exception {

compiler/testData/diagnostics/tests/suppressOnPlusAssign.fir.kt

@@ -0,0 +1,10 @@
+// ISSUE: KT-62473
+// WITH_STDLIB
+
+class A(val list: List<*>)
+
+fun test(a: A) {
+    val result = mutableListOf<Int>()
+    @Suppress("UNCHECKED_CAST")
+    result += (a.list <!UNCHECKED_CAST!>as List<Int><!>).filter { it > 0 }
+}

compiler/testData/diagnostics/tests/suppressOnPlusAssign.kt

@@ -0,0 +1,10 @@
+// ISSUE: KT-62473
+// WITH_STDLIB
+
+class A(val list: List<*>)
+
+fun test(a: A) {
+    val result = mutableListOf<Int>()
+    @Suppress("UNCHECKED_CAST")
+    result += (a.list as List<Int>).filter { it > 0 }
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -1251,6 +1251,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
             runTest("compiler/testData/diagnostics/tests/suppressInWhen.kt");
         }
 
+        @Test
+        @TestMetadata("suppressOnPlusAssign.kt")
+        public void testSuppressOnPlusAssign() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/suppressOnPlusAssign.kt");
+        }
+
         @Test
         @TestMetadata("suspendConflictingOverloads.kt")
         public void testSuspendConflictingOverloads() throws Exception {