[FIR] Fix problem with local classes in anonymous objects

compiler/fir/analysis-tests/testData/resolve/cfg/innerClassInAnonymousObject.dot

@@ -0,0 +1,61 @@
+digraph innerClassInAnonymousObject_kt {
+    graph [nodesep=3]
+    node [shape=box penwidth=2]
+    edge [penwidth=2]
+
+    subgraph cluster_0 {
+        color=red
+        0 [label="Enter function <init>" style="filled" fillcolor=red];
+        2 [label="Delegated constructor call: super<R|kotlin/Any|>()"];
+        1 [label="Exit function <init>" style="filled" fillcolor=red];
+    }
+    0 -> {2};
+    2 -> {1};
+
+    subgraph cluster_1 {
+        color=red
+        3 [label="Enter function <init>" style="filled" fillcolor=red];
+        5 [label="Delegated constructor call: super<R|kotlin/Any|>()"];
+        4 [label="Exit function <init>" style="filled" fillcolor=red];
+    }
+    3 -> {5};
+    5 -> {4};
+
+    subgraph cluster_2 {
+        color=red
+        6 [label="Enter function foo" style="filled" fillcolor=red];
+        7 [label="Exit function foo" style="filled" fillcolor=red];
+    }
+    6 -> {7};
+
+    subgraph cluster_3 {
+        color=red
+        8 [label="Enter class Nested" style="filled" fillcolor=red];
+        9 [label="Exit class Nested" style="filled" fillcolor=red];
+    }
+    8 -> {9} [color=green];
+
+    subgraph cluster_4 {
+        color=red
+        10 [label="Enter class <anonymous>" style="filled" fillcolor=red];
+        11 [label="Exit class <anonymous>" style="filled" fillcolor=red];
+    }
+    10 -> {11} [color=green];
+
+    subgraph cluster_5 {
+        color=red
+        14 [label="Enter property" style="filled" fillcolor=red];
+        subgraph cluster_6 {
+            color=blue
+            12 [label="Enter function getter" style="filled" fillcolor=red];
+            13 [label="Exit function getter" style="filled" fillcolor=red];
+        }
+        16 [label="Exit anonymous object"];
+        15 [label="Exit property" style="filled" fillcolor=red];
+    }
+    14 -> {16};
+    14 -> {0 3 6} [color=red];
+    16 -> {15};
+    12 -> {13};
+
+}

compiler/fir/analysis-tests/testData/resolve/cfg/innerClassInAnonymousObject.kt

@@ -0,0 +1,7 @@
+// !DUMP_CFG
+
+val x = object {
+    class Nested {
+        fun foo() {}
+    }
+}

compiler/fir/analysis-tests/testData/resolve/cfg/innerClassInAnonymousObject.txt

@@ -0,0 +1,19 @@
+FILE: innerClassInAnonymousObject.kt
+    public final val x: R|anonymous| = object : R|kotlin/Any| {
+        private[local] constructor(): R|anonymous| {
+            super<R|kotlin/Any|>()
+        }
+
+        local final class Nested : R|kotlin/Any| {
+            public[local] constructor(): R|<anonymous>.Nested| {
+                super<R|kotlin/Any|>()
+            }
+
+            public[local] final fun foo(): R|kotlin/Unit| {
+            }
+
+        }
+
+    }
+
+        public get(): R|anonymous|

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

@@ -702,6 +702,11 @@ public class FirDiagnosticsTestGenerated extends AbstractFirDiagnosticsTest {
             runTest("compiler/fir/analysis-tests/testData/resolve/cfg/initBlockAndInPlaceLambda.kt");
         }
 
+        @TestMetadata("innerClassInAnonymousObject.kt")
+        public void testInnerClassInAnonymousObject() throws Exception {
+            runTest("compiler/fir/analysis-tests/testData/resolve/cfg/innerClassInAnonymousObject.kt");
+        }
+
         @TestMetadata("inplaceLambdaInControlFlowExpressions.kt")
         public void testInplaceLambdaInControlFlowExpressions() throws Exception {
             runTest("compiler/fir/analysis-tests/testData/resolve/cfg/inplaceLambdaInControlFlowExpressions.kt");

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

@@ -702,6 +702,11 @@ public class FirDiagnosticsWithLightTreeTestGenerated extends AbstractFirDiagnos
             runTest("compiler/fir/analysis-tests/testData/resolve/cfg/initBlockAndInPlaceLambda.kt");
         }
 
+        @TestMetadata("innerClassInAnonymousObject.kt")
+        public void testInnerClassInAnonymousObject() throws Exception {
+            runTest("compiler/fir/analysis-tests/testData/resolve/cfg/innerClassInAnonymousObject.kt");
+        }
+
         @TestMetadata("inplaceLambdaInControlFlowExpressions.kt")
         public void testInplaceLambdaInControlFlowExpressions() throws Exception {
             runTest("compiler/fir/analysis-tests/testData/resolve/cfg/inplaceLambdaInControlFlowExpressions.kt");

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/dfa/FirDataFlowAnalyzer.kt

@@ -177,7 +177,7 @@ abstract class FirDataFlowAnalyzer<FLOW : Flow>(
     }
 
     fun exitRegularClass(klass: FirRegularClass): ControlFlowGraph {
-        if (klass.isLocal) return exitLocalClass(klass)
+        if (klass.isLocal && components.container !is FirClass<*>) return exitLocalClass(klass)
         return graphBuilder.exitClass(klass)
     }