diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
index 13012a726cbf6..2d06308f97911 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
@@ -21,15 +21,19 @@ public class OK
         /* TARGET use-site */ <this>.#o
         /* TARGET use-site */ <this>.<set-o>(<set-?> = "O")
         /* TARGET use-site */ <this>.#o
-        /* TARGET use-site */ <this>.#k
-        /* TARGET use-site */ <this>.#k
+        local class <no name provided>
+            public fun run()
+                /* TARGET use-site */ <this>.#k
+                /* TARGET use-site */ <this>.#k
         /* TARGET use-site */ <this>.<get-o>()
     internal inline fun initializeAndReadOK(): String
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
         /* ACCESSOR use-site */ access$<set-o>($this = this, <set-?> = "O")
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+        local class <no name provided>
+            public fun run()
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
         /* ACCESSOR use-site */ access$<get-o>($this = this)
     /* ACCESSOR declaration */ internal /* static */ fun access$<get-o>($this: OK): String
         /* TARGET use-site */ $this.<get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt b/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
index d8629f44f7686..3b4a1224fb588 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
@@ -21,15 +21,19 @@ public class OK
         /* TARGET use-site */ <this>.#o
         /* TARGET use-site */ <this>.<set-o>(<set-?> = "O")
         /* TARGET use-site */ <this>.#o
-        /* TARGET use-site */ <this>.#k
-        /* TARGET use-site */ <this>.#k
+        local class <no name provided>
+            public fun run()
+                /* TARGET use-site */ <this>.#k
+                /* TARGET use-site */ <this>.#k
         /* TARGET use-site */ <this>.<get-o>()
     internal inline fun initializeAndReadOK(): String
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
         /* ACCESSOR use-site */ access$<set-o>($this = this, <set-?> = "O")
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+        local class <no name provided>
+            public fun run()
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
         /* ACCESSOR use-site */ access$<get-o>($this = this)
     /* ACCESSOR declaration */ public /* static */ fun access$<get-o>($this: OK): String
         /* TARGET use-site */ $this.<get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt b/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
index a238e4c58d9ae..dfeb66439e692 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
@@ -11,11 +11,22 @@ class OK {
         x = "X"
         if (!::x.isInitialized) throw Error("Property 'x' is not initialized")
 
-        if (::y.isInitialized) throw Error("Property 'y' already initialized")
-        y = "Y"
-        if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
-
-        return x + y
+        object {
+            fun run() {
+                if (::y.isInitialized) throw Error("Property 'y' already initialized")
+                y = "Y"
+                if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
+            }
+        }
+        val local = object {
+            lateinit var xy: String
+        }
+
+        if (local::xy.isInitialized) throw Error("Property 'xy' already initialized")
+        local.xy = x + y
+        if (!local::xy.isInitialized) throw Error("Property 'xy' is not initialized")
+
+        return local.xy
     }
 
     internal fun initializeAndReadXY(): String = doInitializeAndReadXY()
@@ -25,11 +36,23 @@ class OK {
         o = "O"
         if (!::o.isInitialized) throw Error("Property 'o' is not initialized")
 
-        if (::k.isInitialized) throw Error("Property 'k' already initialized")
-        k = "K"
-        if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+        object {
+            fun run() {
+                if (::k.isInitialized) throw Error("Property 'k' already initialized")
+                k = "K"
+                if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+            }
+        }.run()
+
+        val local = object {
+            lateinit var ok: String
+        }
+
+        if (local::ok.isInitialized) throw Error("Property 'ok' already initialized")
+        local.ok = o + k
+        if (!local::ok.isInitialized) throw Error("Property 'ok' is not initialized")
 
-        return o + k
+        return local.ok
     }
 
     internal inline fun initializeAndReadOK(): String = doInitializeAndReadOK()
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
index ddc29ed5adf09..8d6a7a7dd830e 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
@@ -21,15 +21,19 @@ public class OK
         /* TARGET use-site */ <this>.#o
         /* TARGET use-site */ <this>.<set-o>(<set-?> = "O")
         /* TARGET use-site */ <this>.#o
-        /* TARGET use-site */ <this>.#k
-        /* TARGET use-site */ <this>.#k
+        local class <no name provided>
+            public fun run()
+                /* TARGET use-site */ <this>.#k
+                /* TARGET use-site */ <this>.#k
         /* TARGET use-site */ <this>.<get-o>()
     internal inline fun initializeAndReadOK(): String
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
         /* ACCESSOR use-site */ access$<set-o>($this = this, <set-?> = "O")
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+        local class <no name provided>
+            public fun run()
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
         /* ACCESSOR use-site */ access$<get-o>($this = this)
     /* ACCESSOR declaration */ internal /* static */ fun access$<get-o>($this: OK): String
         /* TARGET use-site */ $this.<get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
index bd4c493b93f07..37c24ed0808f4 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
@@ -21,15 +21,19 @@ public class OK
         /* TARGET use-site */ <this>.#o
         /* TARGET use-site */ <this>.<set-o>(<set-?> = "O")
         /* TARGET use-site */ <this>.#o
-        /* TARGET use-site */ <this>.#k
-        /* TARGET use-site */ <this>.#k
+        local class <no name provided>
+            public fun run()
+                /* TARGET use-site */ <this>.#k
+                /* TARGET use-site */ <this>.#k
         /* TARGET use-site */ <this>.<get-o>()
     internal inline fun initializeAndReadOK(): String
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
         /* ACCESSOR use-site */ access$<set-o>($this = this, <set-?> = "O")
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+        local class <no name provided>
+            public fun run()
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
         /* ACCESSOR use-site */ access$<get-o>($this = this)
     /* ACCESSOR declaration */ public /* static */ fun access$<get-o>($this: OK): String
         /* TARGET use-site */ $this.<get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
index f9b4d0d55e01c..bcc3ff864662d 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
@@ -12,11 +12,22 @@ class OK {
         x = "X"
         if (!::x.isInitialized) throw Error("Property 'x' is not initialized")
 
-        if (::y.isInitialized) throw Error("Property 'y' already initialized")
-        y = "Y"
-        if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
+        object {
+            fun run() {
+                if (::y.isInitialized) throw Error("Property 'y' already initialized")
+                y = "Y"
+                if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
+            }
+        }
+        val local = object {
+            lateinit var xy: String
+        }
 
-        return x + y
+        if (local::xy.isInitialized) throw Error("Property 'xy' already initialized")
+        local.xy = x + y
+        if (!local::xy.isInitialized) throw Error("Property 'xy' is not initialized")
+
+        return local.xy
     }
 
     internal fun initializeAndReadXY(): String = doInitializeAndReadXY()
@@ -26,11 +37,23 @@ class OK {
         o = "O"
         if (!::o.isInitialized) throw Error("Property 'o' is not initialized")
 
-        if (::k.isInitialized) throw Error("Property 'k' already initialized")
-        k = "K"
-        if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+        object {
+            fun run() {
+                if (::k.isInitialized) throw Error("Property 'k' already initialized")
+                k = "K"
+                if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+            }
+        }.run()
+
+        val local = object {
+            lateinit var ok: String
+        }
+
+        if (local::ok.isInitialized) throw Error("Property 'ok' already initialized")
+        local.ok = o + k
+        if (!local::ok.isInitialized) throw Error("Property 'ok' is not initialized")
 
-        return o + k
+        return local.ok
     }
 
     internal inline fun initializeAndReadOK(): String = doInitializeAndReadOK()
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
index 083bcddf9b617..efc47841cffe6 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
@@ -21,15 +21,19 @@ public class OK
         /* TARGET use-site */ <this>.#o
         /* TARGET use-site */ <this>.<set-o>(<set-?> = "O")
         /* TARGET use-site */ <this>.#o
-        /* TARGET use-site */ <this>.#k
-        /* TARGET use-site */ <this>.#k
+        local class <no name provided>
+            public fun run()
+                /* TARGET use-site */ <this>.#k
+                /* TARGET use-site */ <this>.#k
         /* TARGET use-site */ <this>.<get-o>()
     internal inline fun initializeAndReadOK(): String
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
         /* ACCESSOR use-site */ access$<set-o>($this = this, <set-?> = "O")
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+        local class <no name provided>
+            public fun run()
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
         /* ACCESSOR use-site */ access$<get-o>($this = this)
     /* ACCESSOR declaration */ internal /* static */ fun access$<get-o>($this: OK): String
         /* TARGET use-site */ $this.<get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.accessors.txt b/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.accessors.txt
index c8d81b73853d5..44e0e0ffa1aad 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.accessors.txt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.accessors.txt
@@ -21,15 +21,19 @@ public class OK
         /* TARGET use-site */ <this>.#o
         /* TARGET use-site */ <this>.<set-o>(<set-?> = "O")
         /* TARGET use-site */ <this>.#o
-        /* TARGET use-site */ <this>.#k
-        /* TARGET use-site */ <this>.#k
+        local class <no name provided>
+            public fun run()
+                /* TARGET use-site */ <this>.#k
+                /* TARGET use-site */ <this>.#k
         /* TARGET use-site */ <this>.<get-o>()
     internal inline fun initializeAndReadOK(): String
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
         /* ACCESSOR use-site */ access$<set-o>($this = this, <set-?> = "O")
         /* ACCESSOR use-site */ access$<get-o>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
-        /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+        local class <no name provided>
+            public fun run()
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
+                /* ACCESSOR use-site */ access$<get-k>$p($this = this)
         /* ACCESSOR use-site */ access$<get-o>($this = this)
     /* ACCESSOR declaration */ public /* static */ fun access$<get-o>($this: OK): String
         /* TARGET use-site */ $this.<get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.kt b/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.kt
index 3cd15e2c987d5..52dfc36596b1a 100644
--- a/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.kt
+++ b/compiler/testData/klib/syntheticAccessors/privateMember/singleFile/useLateinitIsInitializedFromInternalInline.kt
@@ -10,11 +10,22 @@ class OK {
         x = "X"
         if (!::x.isInitialized) throw Error("Property 'x' is not initialized")
 
-        if (::y.isInitialized) throw Error("Property 'y' already initialized")
-        y = "Y"
-        if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
-
-        return x + y
+        object {
+            fun run() {
+                if (::y.isInitialized) throw Error("Property 'y' already initialized")
+                y = "Y"
+                if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
+            }
+        }
+        val local = object {
+            lateinit var xy: String
+        }
+
+        if (local::xy.isInitialized) throw Error("Property 'xy' already initialized")
+        local.xy = x + y
+        if (!local::xy.isInitialized) throw Error("Property 'xy' is not initialized")
+
+        return local.xy
     }
 
     internal fun initializeAndReadXY(): String = doInitializeAndReadXY()
@@ -24,11 +35,23 @@ class OK {
         o = "O"
         if (!::o.isInitialized) throw Error("Property 'o' is not initialized")
 
-        if (::k.isInitialized) throw Error("Property 'k' already initialized")
-        k = "K"
-        if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+        object {
+            fun run() {
+                if (::k.isInitialized) throw Error("Property 'k' already initialized")
+                k = "K"
+                if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+            }
+        }.run()
+
+        val local = object {
+            lateinit var ok: String
+        }
+
+        if (local::ok.isInitialized) throw Error("Property 'ok' already initialized")
+        local.ok = o + k
+        if (!local::ok.isInitialized) throw Error("Property 'ok' is not initialized")
 
-        return o + k
+        return local.ok
     }
 
     internal inline fun initializeAndReadOK(): String = doInitializeAndReadOK()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
index af7b08b92f5a0..e4ce28c6c3c45 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
@@ -20,15 +20,19 @@ private inline fun doInitializeAndReadOK(): String
     /* TARGET use-site */ #o
     /* TARGET use-site */ <set-o>(<set-?> = "O")
     /* TARGET use-site */ #o
-    /* TARGET use-site */ #k
-    /* TARGET use-site */ #k
+    local class <no name provided>
+        public fun run()
+            /* TARGET use-site */ #k
+            /* TARGET use-site */ #k
     /* TARGET use-site */ <get-o>()
 internal inline fun initializeAndReadOK(): String
     /* ACCESSOR use-site */ access$<get-o>$p$tOKKt()
     /* ACCESSOR use-site */ access$<set-o>$tOKKt(<set-?> = "O")
     /* ACCESSOR use-site */ access$<get-o>$p$tOKKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
+    local class <no name provided>
+        public fun run()
+            /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
+            /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
     /* ACCESSOR use-site */ access$<get-o>$tOKKt()
 /* ACCESSOR declaration */ internal fun access$<get-o>$tOKKt(): String
     /* TARGET use-site */ <get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
index f1f4d62c13ed0..9da9018de3ce1 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
@@ -20,15 +20,19 @@ private inline fun doInitializeAndReadOK(): String
     /* TARGET use-site */ #o
     /* TARGET use-site */ <set-o>(<set-?> = "O")
     /* TARGET use-site */ #o
-    /* TARGET use-site */ #k
-    /* TARGET use-site */ #k
+    local class <no name provided>
+        public fun run()
+            /* TARGET use-site */ #k
+            /* TARGET use-site */ #k
     /* TARGET use-site */ <get-o>()
 internal inline fun initializeAndReadOK(): String
     /* ACCESSOR use-site */ access$<get-o>$p$tOKKt()
     /* ACCESSOR use-site */ access$<set-o>$tOKKt(<set-?> = "O")
     /* ACCESSOR use-site */ access$<get-o>$p$tOKKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
+    local class <no name provided>
+        public fun run()
+            /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
+            /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
     /* ACCESSOR use-site */ access$<get-o>$tOKKt()
 /* ACCESSOR declaration */ public fun access$<get-o>$tOKKt(): String
     /* TARGET use-site */ <get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
index 50caf6446d630..1bd0566ecb2c1 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
@@ -10,11 +10,22 @@ private inline fun doInitializeAndReadXY(): String {
     x = "X"
     if (!::x.isInitialized) throw Error("Property 'x' is not initialized")
 
-    if (::y.isInitialized) throw Error("Property 'y' already initialized")
-    y = "Y"
-    if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
-
-    return x + y
+    object {
+        fun run() {
+            if (::y.isInitialized) throw Error("Property 'y' already initialized")
+            y = "Y"
+            if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
+        }
+    }
+    val local = object {
+        lateinit var xy: String
+    }
+
+    if (local::xy.isInitialized) throw Error("Property 'xy' already initialized")
+    local.xy = x + y
+    if (!local::xy.isInitialized) throw Error("Property 'xy' is not initialized")
+
+    return local.xy
 }
 
 internal fun initializeAndReadXY(): String = doInitializeAndReadXY()
@@ -24,11 +35,23 @@ private inline fun doInitializeAndReadOK(): String {
     o = "O"
     if (!::o.isInitialized) throw Error("Property 'o' is not initialized")
 
-    if (::k.isInitialized) throw Error("Property 'k' already initialized")
-    k = "K"
-    if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+    object {
+        fun run() {
+            if (::k.isInitialized) throw Error("Property 'k' already initialized")
+            k = "K"
+            if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+        }
+    }.run()
+
+    val local = object {
+        lateinit var ok: String
+    }
+
+    if (local::ok.isInitialized) throw Error("Property 'ok' already initialized")
+    local.ok = o + k
+    if (!local::ok.isInitialized) throw Error("Property 'ok' is not initialized")
 
-    return o + k
+    return local.ok
 }
 
 internal inline fun initializeAndReadOK(): String = doInitializeAndReadOK()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt
new file mode 100644
index 0000000000000..5db86abd83d87
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt
@@ -0,0 +1,16 @@
+/* MODULE name=<main> */
+
+/* FILE package=<root> fileName=A.kt */
+
+private lateinit var o: String?
+    /* TARGET declaration */ private fun <get-o>(): String
+    /* TARGET declaration */ private fun <set-o>(<set-?>: String)
+public class A
+    internal inline fun inlineMethod(): String
+        local fun <anonymous>()
+            /* ACCESSOR use-site */ access$<set-o>$tAKt(<set-?> = "O")
+        /* ACCESSOR use-site */ access$<get-o>$tAKt()
+/* ACCESSOR declaration */ internal fun access$<get-o>$tAKt(): String
+    /* TARGET use-site */ <get-o>()
+/* ACCESSOR declaration */ internal fun access$<set-o>$tAKt(<set-?>: String)
+    /* TARGET use-site */ <set-o>(<set-?> = <set-?>)
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors.txt
new file mode 100644
index 0000000000000..1b3c3936f2cef
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors.txt
@@ -0,0 +1,16 @@
+/* MODULE name=<main> */
+
+/* FILE package=<root> fileName=A.kt */
+
+private lateinit var o: String?
+    /* TARGET declaration */ private fun <get-o>(): String
+    /* TARGET declaration */ private fun <set-o>(<set-?>: String)
+public class A
+    internal inline fun inlineMethod(): String
+        local fun <anonymous>()
+            /* ACCESSOR use-site */ access$<set-o>$tAKt(<set-?> = "O")
+        /* ACCESSOR use-site */ access$<get-o>$tAKt()
+/* ACCESSOR declaration */ public fun access$<get-o>$tAKt(): String
+    /* TARGET use-site */ <get-o>()
+/* ACCESSOR declaration */ public fun access$<set-o>$tAKt(<set-?>: String)
+    /* TARGET use-site */ <set-o>(<set-?> = <set-?>)
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.kt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.kt
new file mode 100644
index 0000000000000..cd7630666f8b1
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.kt
@@ -0,0 +1,22 @@
+// IGNORE_BACKEND: JS_IR
+// ^^^ This test fails due to visibility violation on access to JS `internal` intrinsic functions
+//     `kotlin.sharedBoxCreate`, `kotlin.sharedBoxRead` and `kotlin.sharedBoxWrite`. To be fixed in KT-67304.
+
+// FILE: A.kt
+fun wrapper(block: () -> Unit) { block() }
+
+private lateinit var o: String
+
+class A {
+    internal inline fun inlineMethod(): String {
+        lateinit var k: String
+        wrapper {
+            o = "O"
+            k = "K"
+        }
+        return o + k
+    }
+}
+
+// FILE: main.kt
+fun box() = A().inlineMethod()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
index ac6deadc00a95..2cdb7907943f4 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
@@ -6,15 +6,19 @@ internal inline fun initializeAndReadOK(): String
     /* ACCESSOR use-site */ access$<get-o>$p$tOKKt()
     /* ACCESSOR use-site */ access$<set-o>$tOKKt(<set-?> = "O")
     /* ACCESSOR use-site */ access$<get-o>$p$tOKKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
+    local class <no name provided>
+        public fun run()
+            /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
+            /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
     /* ACCESSOR use-site */ access$<get-o>$tOKKt()
 private inline fun doInitializeAndReadOK(): String
     /* TARGET use-site */ #o
     /* TARGET use-site */ <set-o>(<set-?> = "O")
     /* TARGET use-site */ #o
-    /* TARGET use-site */ #k
-    /* TARGET use-site */ #k
+    local class <no name provided>
+        public fun run()
+            /* TARGET use-site */ #k
+            /* TARGET use-site */ #k
     /* TARGET use-site */ <get-o>()
 private lateinit var o: String?
     /* TARGET declaration */ private /* static field */ field o: String?
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
index 8f6d23a493cb3..86a8cd168b78a 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.accessors.txt
@@ -6,15 +6,19 @@ internal inline fun initializeAndReadOK(): String
     /* ACCESSOR use-site */ access$<get-o>$p$tOKKt()
     /* ACCESSOR use-site */ access$<set-o>$tOKKt(<set-?> = "O")
     /* ACCESSOR use-site */ access$<get-o>$p$tOKKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
+    local class <no name provided>
+        public fun run()
+            /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
+            /* ACCESSOR use-site */ access$<get-k>$p$tOKKt()
     /* ACCESSOR use-site */ access$<get-o>$tOKKt()
 private inline fun doInitializeAndReadOK(): String
     /* TARGET use-site */ #o
     /* TARGET use-site */ <set-o>(<set-?> = "O")
     /* TARGET use-site */ #o
-    /* TARGET use-site */ #k
-    /* TARGET use-site */ #k
+    local class <no name provided>
+        public fun run()
+            /* TARGET use-site */ #k
+            /* TARGET use-site */ #k
     /* TARGET use-site */ <get-o>()
 private lateinit var o: String?
     /* TARGET declaration */ private /* static field */ field o: String?
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
index 2bcf1b26026bf..11fe98b09d31e 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingLateinitIsInitializedFromInternalInline.kt
@@ -11,11 +11,22 @@ private inline fun doInitializeAndReadXY(): String {
     x = "X"
     if (!::x.isInitialized) throw Error("Property 'x' is not initialized")
 
-    if (::y.isInitialized) throw Error("Property 'y' already initialized")
-    y = "Y"
-    if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
-
-    return x + y
+    object {
+        fun run() {
+            if (::y.isInitialized) throw Error("Property 'y' already initialized")
+            y = "Y"
+            if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
+        }
+    }
+    val local = object {
+        lateinit var xy: String
+    }
+
+    if (local::xy.isInitialized) throw Error("Property 'xy' already initialized")
+    local.xy = x + y
+    if (!local::xy.isInitialized) throw Error("Property 'xy' is not initialized")
+
+    return local.xy
 }
 
 internal fun initializeAndReadXY(): String = doInitializeAndReadXY()
@@ -25,11 +36,23 @@ private inline fun doInitializeAndReadOK(): String {
     o = "O"
     if (!::o.isInitialized) throw Error("Property 'o' is not initialized")
 
-    if (::k.isInitialized) throw Error("Property 'k' already initialized")
-    k = "K"
-    if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+    object {
+        fun run() {
+            if (::k.isInitialized) throw Error("Property 'k' already initialized")
+            k = "K"
+            if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+        }
+    }.run()
+
+    val local = object {
+        lateinit var ok: String
+    }
+
+    if (local::ok.isInitialized) throw Error("Property 'ok' already initialized")
+    local.ok = o + k
+    if (!local::ok.isInitialized) throw Error("Property 'ok' is not initialized")
 
-    return o + k
+    return local.ok
 }
 
 internal inline fun initializeAndReadOK(): String = doInitializeAndReadOK()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt
new file mode 100644
index 0000000000000..5fef16a6ce811
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt
@@ -0,0 +1,16 @@
+/* MODULE name=<lib> */
+
+/* FILE package=<root> fileName=A.kt */
+
+public class A
+    internal inline fun inlineMethod(): String
+        local fun <anonymous>()
+            /* ACCESSOR use-site */ access$<set-o>$tAKt(<set-?> = "O")
+        /* ACCESSOR use-site */ access$<get-o>$tAKt()
+private lateinit var o: String?
+    /* TARGET declaration */ private fun <get-o>(): String
+    /* TARGET declaration */ private fun <set-o>(<set-?>: String)
+/* ACCESSOR declaration */ internal fun access$<get-o>$tAKt(): String
+    /* TARGET use-site */ <get-o>()
+/* ACCESSOR declaration */ internal fun access$<set-o>$tAKt(<set-?>: String)
+    /* TARGET use-site */ <set-o>(<set-?> = <set-?>)
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors.txt
new file mode 100644
index 0000000000000..991edc376a160
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.accessors.txt
@@ -0,0 +1,16 @@
+/* MODULE name=<lib> */
+
+/* FILE package=<root> fileName=A.kt */
+
+public class A
+    internal inline fun inlineMethod(): String
+        local fun <anonymous>()
+            /* ACCESSOR use-site */ access$<set-o>$tAKt(<set-?> = "O")
+        /* ACCESSOR use-site */ access$<get-o>$tAKt()
+private lateinit var o: String?
+    /* TARGET declaration */ private fun <get-o>(): String
+    /* TARGET declaration */ private fun <set-o>(<set-?>: String)
+/* ACCESSOR declaration */ public fun access$<get-o>$tAKt(): String
+    /* TARGET use-site */ <get-o>()
+/* ACCESSOR declaration */ public fun access$<set-o>$tAKt(<set-?>: String)
+    /* TARGET use-site */ <set-o>(<set-?> = <set-?>)
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.kt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.kt
new file mode 100644
index 0000000000000..b3095704de0a9
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.kt
@@ -0,0 +1,24 @@
+// IGNORE_BACKEND: JS_IR
+// ^^^ This test fails due to visibility violation on access to JS `internal` intrinsic functions
+//     `kotlin.sharedBoxCreate`, `kotlin.sharedBoxRead` and `kotlin.sharedBoxWrite`. To be fixed in KT-67304.
+
+// MODULE: lib
+// FILE: A.kt
+fun wrapper(block: () -> Unit) { block() }
+
+private lateinit var o: String
+
+class A {
+    internal inline fun inlineMethod(): String {
+        lateinit var k: String
+        wrapper {
+            o = "O"
+            k = "K"
+        }
+        return o + k
+    }
+}
+
+// MODULE: main()(lib)
+// FILE: main.kt
+fun box() = A().inlineMethod()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt
new file mode 100644
index 0000000000000..48fafa554be56
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.accessors-narrowed.txt
@@ -0,0 +1,16 @@
+/* MODULE name=<main> */
+
+/* FILE package=<root> fileName=leakingPrivateTopLevelLateinitVar.kt */
+
+private lateinit var o: String?
+    /* TARGET declaration */ private fun <get-o>(): String
+    /* TARGET declaration */ private fun <set-o>(<set-?>: String)
+public class A
+    internal inline fun inlineMethod(): String
+        local fun <anonymous>()
+            /* ACCESSOR use-site */ access$<set-o>$tLeakingPrivateTopLevelLateinitVarKt(<set-?> = "O")
+        /* ACCESSOR use-site */ access$<get-o>$tLeakingPrivateTopLevelLateinitVarKt()
+/* ACCESSOR declaration */ internal fun access$<get-o>$tLeakingPrivateTopLevelLateinitVarKt(): String
+    /* TARGET use-site */ <get-o>()
+/* ACCESSOR declaration */ internal fun access$<set-o>$tLeakingPrivateTopLevelLateinitVarKt(<set-?>: String)
+    /* TARGET use-site */ <set-o>(<set-?> = <set-?>)
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.accessors.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.accessors.txt
new file mode 100644
index 0000000000000..4db2762190847
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.accessors.txt
@@ -0,0 +1,16 @@
+/* MODULE name=<main> */
+
+/* FILE package=<root> fileName=leakingPrivateTopLevelLateinitVar.kt */
+
+private lateinit var o: String?
+    /* TARGET declaration */ private fun <get-o>(): String
+    /* TARGET declaration */ private fun <set-o>(<set-?>: String)
+public class A
+    internal inline fun inlineMethod(): String
+        local fun <anonymous>()
+            /* ACCESSOR use-site */ access$<set-o>$tLeakingPrivateTopLevelLateinitVarKt(<set-?> = "O")
+        /* ACCESSOR use-site */ access$<get-o>$tLeakingPrivateTopLevelLateinitVarKt()
+/* ACCESSOR declaration */ public fun access$<get-o>$tLeakingPrivateTopLevelLateinitVarKt(): String
+    /* TARGET use-site */ <get-o>()
+/* ACCESSOR declaration */ public fun access$<set-o>$tLeakingPrivateTopLevelLateinitVarKt(<set-?>: String)
+    /* TARGET use-site */ <set-o>(<set-?> = <set-?>)
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.kt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.kt
new file mode 100644
index 0000000000000..ff3ec4673b2d0
--- /dev/null
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.kt
@@ -0,0 +1,20 @@
+// IGNORE_BACKEND: JS_IR
+// ^^^ This test fails due to visibility violation on access to JS `internal` intrinsic functions
+//     `kotlin.sharedBoxCreate`, `kotlin.sharedBoxRead` and `kotlin.sharedBoxWrite`. To be fixed in KT-67304.
+
+fun wrapper(block: () -> Unit) { block() }
+
+private lateinit var o: String
+
+class A {
+    internal inline fun inlineMethod(): String {
+        lateinit var k: String
+        wrapper {
+            o = "O"
+            k = "K"
+        }
+        return o + k
+    }
+}
+
+fun box() = A().inlineMethod()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.accessors-narrowed.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
index 848202e19e449..54ddd506891de 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.accessors-narrowed.txt
@@ -20,15 +20,19 @@ private inline fun doInitializeAndReadOK(): String
     /* TARGET use-site */ #o
     /* TARGET use-site */ <set-o>(<set-?> = "O")
     /* TARGET use-site */ #o
-    /* TARGET use-site */ #k
-    /* TARGET use-site */ #k
+    local class <no name provided>
+        public fun run()
+            /* TARGET use-site */ #k
+            /* TARGET use-site */ #k
     /* TARGET use-site */ <get-o>()
 internal inline fun initializeAndReadOK(): String
     /* ACCESSOR use-site */ access$<get-o>$p$tUseLateinitIsInitializedFromInternalInlineKt()
     /* ACCESSOR use-site */ access$<set-o>$tUseLateinitIsInitializedFromInternalInlineKt(<set-?> = "O")
     /* ACCESSOR use-site */ access$<get-o>$p$tUseLateinitIsInitializedFromInternalInlineKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tUseLateinitIsInitializedFromInternalInlineKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tUseLateinitIsInitializedFromInternalInlineKt()
+    local class <no name provided>
+        public fun run()
+            /* ACCESSOR use-site */ access$<get-k>$p$tUseLateinitIsInitializedFromInternalInlineKt()
+            /* ACCESSOR use-site */ access$<get-k>$p$tUseLateinitIsInitializedFromInternalInlineKt()
     /* ACCESSOR use-site */ access$<get-o>$tUseLateinitIsInitializedFromInternalInlineKt()
 /* ACCESSOR declaration */ internal fun access$<get-o>$tUseLateinitIsInitializedFromInternalInlineKt(): String
     /* TARGET use-site */ <get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.accessors.txt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.accessors.txt
index ecf75651f58af..5c5a45eb9d4d5 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.accessors.txt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.accessors.txt
@@ -20,15 +20,19 @@ private inline fun doInitializeAndReadOK(): String
     /* TARGET use-site */ #o
     /* TARGET use-site */ <set-o>(<set-?> = "O")
     /* TARGET use-site */ #o
-    /* TARGET use-site */ #k
-    /* TARGET use-site */ #k
+    local class <no name provided>
+        public fun run()
+            /* TARGET use-site */ #k
+            /* TARGET use-site */ #k
     /* TARGET use-site */ <get-o>()
 internal inline fun initializeAndReadOK(): String
     /* ACCESSOR use-site */ access$<get-o>$p$tUseLateinitIsInitializedFromInternalInlineKt()
     /* ACCESSOR use-site */ access$<set-o>$tUseLateinitIsInitializedFromInternalInlineKt(<set-?> = "O")
     /* ACCESSOR use-site */ access$<get-o>$p$tUseLateinitIsInitializedFromInternalInlineKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tUseLateinitIsInitializedFromInternalInlineKt()
-    /* ACCESSOR use-site */ access$<get-k>$p$tUseLateinitIsInitializedFromInternalInlineKt()
+    local class <no name provided>
+        public fun run()
+            /* ACCESSOR use-site */ access$<get-k>$p$tUseLateinitIsInitializedFromInternalInlineKt()
+            /* ACCESSOR use-site */ access$<get-k>$p$tUseLateinitIsInitializedFromInternalInlineKt()
     /* ACCESSOR use-site */ access$<get-o>$tUseLateinitIsInitializedFromInternalInlineKt()
 /* ACCESSOR declaration */ public fun access$<get-o>$tUseLateinitIsInitializedFromInternalInlineKt(): String
     /* TARGET use-site */ <get-o>()
diff --git a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.kt b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.kt
index 383ab95477e67..f353ef3288d90 100644
--- a/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.kt
+++ b/compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/useLateinitIsInitializedFromInternalInline.kt
@@ -9,11 +9,23 @@ private inline fun doInitializeAndReadXY(): String {
     x = "X"
     if (!::x.isInitialized) throw Error("Property 'x' is not initialized")
 
-    if (::y.isInitialized) throw Error("Property 'y' already initialized")
-    y = "Y"
-    if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
-
-    return x + y
+    object {
+        fun run() {
+            if (::y.isInitialized) throw Error("Property 'y' already initialized")
+            y = "Y"
+            if (!::y.isInitialized) throw Error("Property 'y' is not initialized")
+        }
+    }.run()
+
+    val local = object {
+        lateinit var xy: String
+    }
+
+    if (local::xy.isInitialized) throw Error("Property 'xy' already initialized")
+    local.xy = x + y
+    if (!local::xy.isInitialized) throw Error("Property 'xy' is not initialized")
+
+    return local.xy
 }
 
 internal fun initializeAndReadXY(): String = doInitializeAndReadXY()
@@ -23,11 +35,23 @@ private inline fun doInitializeAndReadOK(): String {
     o = "O"
     if (!::o.isInitialized) throw Error("Property 'o' is not initialized")
 
-    if (::k.isInitialized) throw Error("Property 'k' already initialized")
-    k = "K"
-    if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+    object {
+        fun run() {
+            if (::k.isInitialized) throw Error("Property 'k' already initialized")
+            k = "K"
+            if (!::k.isInitialized) throw Error("Property 'k' is not initialized")
+        }
+    }.run()
+
+    val local = object {
+        lateinit var ok: String
+    }
+
+    if (local::ok.isInitialized) throw Error("Property 'ok' already initialized")
+    local.ok = o + k
+    if (!local::ok.isInitialized) throw Error("Property 'ok' is not initialized")
 
-    return o + k
+    return local.ok
 }
 
 internal inline fun initializeAndReadOK(): String = doInitializeAndReadOK()
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsKlibSyntheticAccessorInPhase1TestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsKlibSyntheticAccessorInPhase1TestGenerated.java
index 8e37bcdb4dd9c..0564a2721ba13 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsKlibSyntheticAccessorInPhase1TestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsKlibSyntheticAccessorInPhase1TestGenerated.java
@@ -1173,6 +1173,12 @@ public void testLeakingPrivateTopLevelFunWithDifferentVisibility() {
         runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelFunWithDifferentVisibility.kt");
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("leakingPrivateTopLevelSetterThroughInlineFun.kt")
       public void testLeakingPrivateTopLevelSetterThroughInlineFun() {
@@ -1363,6 +1369,12 @@ public void testLeakingPrivateTopLevelFunWithDifferentVisibility() {
         runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelFunWithDifferentVisibility.kt");
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("leakingPrivateTopLevelSetterThroughInlineFun.kt")
       public void testLeakingPrivateTopLevelSetterThroughInlineFun() {
@@ -1451,6 +1463,12 @@ public void testAllFilesPresentInSingleFile() {
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile"), Pattern.compile("^(.+)\\.kt$"), null, TargetBackend.JS_IR, true);
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("useLateinitIsInitializedFromInternalInline.kt")
       public void testUseLateinitIsInitializedFromInternalInline() {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsKlibSyntheticAccessorInPhase2TestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsKlibSyntheticAccessorInPhase2TestGenerated.java
index 94d58dc6ce45c..4e20acee295cd 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsKlibSyntheticAccessorInPhase2TestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsKlibSyntheticAccessorInPhase2TestGenerated.java
@@ -1173,6 +1173,12 @@ public void testLeakingPrivateTopLevelFunWithDifferentVisibility() {
         runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelFunWithDifferentVisibility.kt");
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("leakingPrivateTopLevelSetterThroughInlineFun.kt")
       public void testLeakingPrivateTopLevelSetterThroughInlineFun() {
@@ -1363,6 +1369,12 @@ public void testLeakingPrivateTopLevelFunWithDifferentVisibility() {
         runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelFunWithDifferentVisibility.kt");
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("leakingPrivateTopLevelSetterThroughInlineFun.kt")
       public void testLeakingPrivateTopLevelSetterThroughInlineFun() {
@@ -1451,6 +1463,12 @@ public void testAllFilesPresentInSingleFile() {
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile"), Pattern.compile("^(.+)\\.kt$"), null, TargetBackend.JS_IR, true);
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("useLateinitIsInitializedFromInternalInline.kt")
       public void testUseLateinitIsInitializedFromInternalInline() {
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeKlibSyntheticAccessorInPhase1TestGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeKlibSyntheticAccessorInPhase1TestGenerated.java
index bad9efb24fe12..befef413cad39 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeKlibSyntheticAccessorInPhase1TestGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeKlibSyntheticAccessorInPhase1TestGenerated.java
@@ -1233,6 +1233,12 @@ public void testLeakingPrivateTopLevelFunWithDifferentVisibility() {
         runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelFunWithDifferentVisibility.kt");
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("leakingPrivateTopLevelSetterThroughInlineFun.kt")
       public void testLeakingPrivateTopLevelSetterThroughInlineFun() {
@@ -1428,6 +1434,12 @@ public void testLeakingPrivateTopLevelFunWithDifferentVisibility() {
         runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelFunWithDifferentVisibility.kt");
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("leakingPrivateTopLevelSetterThroughInlineFun.kt")
       public void testLeakingPrivateTopLevelSetterThroughInlineFun() {
@@ -1521,6 +1533,12 @@ public void testAllFilesPresentInSingleFile() {
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile"), Pattern.compile("^(.+)\\.kt$"), null, TargetBackend.NATIVE, true);
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("useLateinitIsInitializedFromInternalInline.kt")
       public void testUseLateinitIsInitializedFromInternalInline() {
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeKlibSyntheticAccessorInPhase2TestGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeKlibSyntheticAccessorInPhase2TestGenerated.java
index e29850e5e1fbd..30015a1256c9e 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeKlibSyntheticAccessorInPhase2TestGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeKlibSyntheticAccessorInPhase2TestGenerated.java
@@ -1233,6 +1233,12 @@ public void testLeakingPrivateTopLevelFunWithDifferentVisibility() {
         runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelFunWithDifferentVisibility.kt");
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossFilePrivateLeak/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("leakingPrivateTopLevelSetterThroughInlineFun.kt")
       public void testLeakingPrivateTopLevelSetterThroughInlineFun() {
@@ -1428,6 +1434,12 @@ public void testLeakingPrivateTopLevelFunWithDifferentVisibility() {
         runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelFunWithDifferentVisibility.kt");
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/crossModulePrivateLeak/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("leakingPrivateTopLevelSetterThroughInlineFun.kt")
       public void testLeakingPrivateTopLevelSetterThroughInlineFun() {
@@ -1521,6 +1533,12 @@ public void testAllFilesPresentInSingleFile() {
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile"), Pattern.compile("^(.+)\\.kt$"), null, TargetBackend.NATIVE, true);
       }
 
+      @Test
+      @TestMetadata("leakingPrivateTopLevelLateinitVar.kt")
+      public void testLeakingPrivateTopLevelLateinitVar() {
+        runTest("compiler/testData/klib/syntheticAccessors/topLevelPrivate/singleFile/leakingPrivateTopLevelLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("useLateinitIsInitializedFromInternalInline.kt")
       public void testUseLateinitIsInitializedFromInternalInline() {