[FIR] Fix stopping in AbstractFirUseSiteMemberScope

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/scopes/impl/AbstractFirUseSiteMemberScope.kt

@@ -43,7 +43,7 @@ abstract class AbstractFirUseSiteMemberScope(
         processor: (FirClassifierSymbol<*>) -> ProcessorAction
     ): ProcessorAction {
         if (!declaredMemberScope.processClassifiersByName(name, processor)) {
-            return ProcessorAction.NEXT
+            return ProcessorAction.STOP
         }
         return superTypesScope.processClassifiersByName(name, processor)
     }

compiler/fir/resolve/testData/resolve/nestedClassNameClash.kt

@@ -0,0 +1,41 @@
+fun <T> listOf(): List<T> = <!UNRESOLVED_REFERENCE!>null!!<!>
+
+fun <T> materialize(): T = <!UNRESOLVED_REFERENCE!>null!!<!>
+
+class Result
+
+class Foo {
+    fun test_0() {
+        val result = materialize<Result>()
+        saveResult(result)
+    }
+
+    fun test_1() {
+        val results = listOf<Result>()
+        saveResults(results)
+    }
+
+    fun test_2(results: List<Result>) {
+        saveResults(results)
+    }
+
+    fun test_3(result: Result) {
+        saveResult(result)
+    }
+
+    fun test_4() {
+        val result = getResult()
+        saveResult(result)
+    }
+
+    fun test_5() {
+        val result = Result()
+        saveResult(result)
+    }
+
+    private fun getResult(): Result = Result()
+    private fun saveResults(results: List<Result>) {}
+    private fun saveResult(result: Result) {}
+
+    class Result
+}

compiler/fir/resolve/testData/resolve/nestedClassNameClash.txt

@@ -0,0 +1,80 @@
+FILE: nestedClassNameClash.kt
+    public final fun <T> listOf(): R|kotlin/collections/List<T>| {
+        ^listOf when (lval <bangbang>: R|kotlin/Nothing?| = Null(null)) {
+            ==($subj$, Null(null)) ->  {
+                throw <Unresolved name: KotlinNullPointerException>#()
+            }
+            else ->  {
+                R|<local>/<bangbang>|
+            }
+        }
+
+    }
+    public final fun <T> materialize(): R|T| {
+        ^materialize when (lval <bangbang>: R|kotlin/Nothing?| = Null(null)) {
+            ==($subj$, Null(null)) ->  {
+                throw <Unresolved name: KotlinNullPointerException>#()
+            }
+            else ->  {
+                R|<local>/<bangbang>|
+            }
+        }
+
+    }
+    public final class Result : R|kotlin/Any| {
+        public constructor(): R|Result| {
+            super<R|kotlin/Any|>()
+        }
+
+    }
+    public final class Foo : R|kotlin/Any| {
+        public constructor(): R|Foo| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final fun test_0(): R|kotlin/Unit| {
+            lval result: R|Foo.Result| = R|/materialize|<R|Foo.Result|>()
+            this@R|/Foo|.R|/Foo.saveResult|(R|<local>/result|)
+        }
+
+        public final fun test_1(): R|kotlin/Unit| {
+            lval results: R|kotlin/collections/List<Foo.Result>| = R|/listOf|<R|Foo.Result|>()
+            this@R|/Foo|.R|/Foo.saveResults|(R|<local>/results|)
+        }
+
+        public final fun test_2(results: R|kotlin/collections/List<Foo.Result>|): R|kotlin/Unit| {
+            this@R|/Foo|.R|/Foo.saveResults|(R|<local>/results|)
+        }
+
+        public final fun test_3(result: R|Foo.Result|): R|kotlin/Unit| {
+            this@R|/Foo|.R|/Foo.saveResult|(R|<local>/result|)
+        }
+
+        public final fun test_4(): R|kotlin/Unit| {
+            lval result: R|Foo.Result| = this@R|/Foo|.R|/Foo.getResult|()
+            this@R|/Foo|.R|/Foo.saveResult|(R|<local>/result|)
+        }
+
+        public final fun test_5(): R|kotlin/Unit| {
+            lval result: R|Foo.Result| = R|/Foo.Result.Result|()
+            this@R|/Foo|.R|/Foo.saveResult|(R|<local>/result|)
+        }
+
+        private final fun getResult(): R|Foo.Result| {
+            ^getResult R|/Foo.Result.Result|()
+        }
+
+        private final fun saveResults(results: R|kotlin/collections/List<Foo.Result>|): R|kotlin/Unit| {
+        }
+
+        private final fun saveResult(result: R|Foo.Result|): R|kotlin/Unit| {
+        }
+
+        public final class Result : R|kotlin/Any| {
+            public constructor(): R|Foo.Result| {
+                super<R|kotlin/Any|>()
+            }
+
+        }
+
+    }

compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirDiagnosticsTestGenerated.java

@@ -133,6 +133,11 @@ public class FirDiagnosticsTestGenerated extends AbstractFirDiagnosticsTest {
         runTest("compiler/fir/resolve/testData/resolve/nestedClass.kt");
     }
 
+    @TestMetadata("nestedClassNameClash.kt")
+    public void testNestedClassNameClash() throws Exception {
+        runTest("compiler/fir/resolve/testData/resolve/nestedClassNameClash.kt");
+    }
+
     @TestMetadata("NestedOfAliasedType.kt")
     public void testNestedOfAliasedType() throws Exception {
         runTest("compiler/fir/resolve/testData/resolve/NestedOfAliasedType.kt");