diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.1.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.1.kt
new file mode 100644
index 00000000000..08d48c599fa
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.1.kt
@@ -0,0 +1,26 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 1 -> sentence 1
+ * RELEVANT PLACES: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 5 -> sentence 1
+ * overloadable-operators -> paragraph 4 -> sentence 1
+ * statements, assignments -> paragraph 3 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: check postfix decrement expression
+ */
+
+fun box(): String {
+    var a = A()
+    val res: A = a--
+    return if (a.i == -1 && res.i == 0) "OK"
+    else "NOK"
+}
+
+class A(var i: Int = 0)  {
+    operator fun dec(): A {
+        return A(i-1)
+    }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.2.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.2.kt
new file mode 100644
index 00000000000..740a5dc1b74
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.2.kt
@@ -0,0 +1,32 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 1 -> sentence 1
+ * RELEVANT PLACES: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 5 -> sentence 1
+ * overloadable-operators -> paragraph 4 -> sentence 1
+ * statements, assignments -> paragraph 3 -> sentence 1
+ * NUMBER: 2
+ * DESCRIPTION: check postfix decrement expression
+ */
+
+
+fun box(): String {
+    var a1 = A()
+    val res1: A = --a1
+
+    var a2 = A()
+    val res2: A = a2--
+
+    return if (res1.i == -1 && res2.i == 0) "OK"
+    else "NOK"
+}
+
+class A(var i :Int = 0) {
+    operator fun dec(): A {
+        return A(i-1)
+    }
+}
+
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.1.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.1.kt
new file mode 100644
index 00000000000..91361fc1012
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.1.kt
@@ -0,0 +1,28 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 4 -> sentence 1
+ * RELEVANT PLACES: statements, assignments -> paragraph 3 -> sentence 3
+ * NUMBER: 1
+ * DESCRIPTION: check for a  decrement expression A-- expression A must be an assignable expression (an indexing expression)
+ */
+
+fun box(): String {
+    val arr = arrayOf(A(), A(), A())
+
+    val a = arr[0]--
+    val b = (arr[2]--).i
+
+    return if (arr[0].i == -1 && a.i == 0 && arr[1].i == 0 && arr[2].i == -1 && b == 0)
+        "OK"
+    else "NOK"
+}
+
+class A(var i :Int = 0) {
+    operator fun dec(): A {
+        return A(i-1)
+    }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.2.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.2.kt
new file mode 100644
index 00000000000..f6971823f84
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.2.kt
@@ -0,0 +1,29 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 4 -> sentence 1
+ * RELEVANT PLACES: statements, assignments -> paragraph 3 -> sentence 2
+ * NUMBER: 2
+ * DESCRIPTION: check for A-- expression A must be an assignable expression (a navigation expression referring to a mutable property)
+ */
+
+
+fun box(): String {
+    var b = B()
+    val x = b.a--
+    return if (x.i == 0 && b.a.i == -1)
+        "OK"
+    else "NOK"
+}
+
+class A(var i :Int = 0) {
+    operator fun dec(): A {
+        return A(i-1)
+    }
+}
+class B() {
+    var a: A = A()
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-5/pos/1.1.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-5/pos/1.1.kt
new file mode 100644
index 00000000000..ee5c3dfbd23
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-5/pos/1.1.kt
@@ -0,0 +1,34 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 5 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: check the result of dec() is assigned to A, the return type of dec must be a subtype of A.
+ */
+
+
+fun box(): String {
+    var res = B(1 )
+    val res1: Any = res--
+    return if (res1 is B && res.i == -1 && res.j == 0 && res1.i == 0 && res1.j == 1) {
+        "OK"
+    } else
+        "NOK"
+}
+
+
+data class B(var j: Int, var k: Int = 0) : A(k) {
+    override operator fun dec(): B {
+        super.dec()
+        return B(j - 1, this.i-1)
+    }
+}
+
+open class A(var i: Int = 0) {
+    open operator fun dec(): A {
+        return A(i - 1)
+    }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.1.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.1.kt
new file mode 100644
index 00000000000..932a58f3a3b
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.1.kt
@@ -0,0 +1,28 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 6 -> sentence 1
+ * RELEVANT PLACES: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 5 -> sentence 1
+ * overloadable-operators -> paragraph 4 -> sentence 1
+ * statements, assignments -> paragraph 3 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: check postfix decrement expression has the same type as its operand expression
+ */
+
+fun box(): String {
+    var a = A()
+    val res: Any? = a--
+
+    return if (res is A ) "OK"
+    else "NOK"
+}
+
+
+open class A(var i: Int = 0) {
+    open operator fun dec(): A {
+        return A(i - 1)
+    }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.2.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.2.kt
new file mode 100644
index 00000000000..26f4478f1da
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.2.kt
@@ -0,0 +1,31 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-decrement-expression -> paragraph 6 -> sentence 1
+ * RELEVANT PLACES: expressions, prefix-expressions, prefix-decrement-expression -> paragraph 5 -> sentence 1
+ * overloadable-operators -> paragraph 4 -> sentence 1
+ * NUMBER: 2
+ * DESCRIPTION: check postfix decrement expression has the same type as its operand expression
+ */
+
+
+fun box(): String {
+    var a = A()
+    val res: Any? = a--
+    return if ((res !is B) && (res is A)) "OK"
+    else "NOK"
+}
+
+open class A() {
+    var i = 0
+
+    open operator fun dec(): B {
+        return B()
+    }
+
+}
+
+class B() : A() {}
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/testsMap.json b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/testsMap.json
new file mode 100644
index 00000000000..fe5dc4c9fc9
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/testsMap.json
@@ -0,0 +1,89 @@
+{
+  "6": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix decrement expression has the same type as its operand expression",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix decrement expression has the same type as its operand expression",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
+  "5": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix decrement expression has the same type as its operand expression",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.1.kt",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix decrement expression",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.2.kt",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix decrement expression",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.1.kt",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check the result of dec() is assigned to A, the return type of dec must be a subtype of A.",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
+  "1": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix decrement expression",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix decrement expression",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
+  "4": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check for A-- expression A must be an assignable expression (a navigation expression referring to a mutable property)",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check for a  decrement expression A-- expression A must be an assignable expression (an indexing expression)",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.1.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.1.kt
new file mode 100644
index 00000000000..038b894947a
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.1.kt
@@ -0,0 +1,26 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 1 -> sentence 1
+ * RELEVANT PLACES: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 5 -> sentence 1
+ * overloadable-operators -> paragraph 4 -> sentence 1
+ * statements, assignments -> paragraph 3 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: check postfix increment expression
+ */
+
+fun box(): String {
+    var a = A()
+    val res: A = a++
+    return if (a.i == 1 && res.i == 0) "OK"
+    else "NOK"
+}
+
+class A(var i: Int = 0)  {
+    operator fun inc(): A {
+        return A(i+1)
+    }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.2.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.2.kt
new file mode 100644
index 00000000000..f1f5860811c
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.2.kt
@@ -0,0 +1,32 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 1 -> sentence 1
+ * RELEVANT PLACES: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 5 -> sentence 1
+ * overloadable-operators -> paragraph 4 -> sentence 1
+ * statements, assignments -> paragraph 3 -> sentence 1
+ * NUMBER: 2
+ * DESCRIPTION: check postfix increment expression
+ */
+
+
+fun box(): String {
+    var a1 = A()
+    val res1: A = ++a1
+
+    var a2 = A()
+    val res2: A = a2++
+
+    return if (res1.i == 1 && res2.i == 0) "OK"
+    else "NOK"
+}
+
+class A(var i :Int = 0) {
+    operator fun inc(): A {
+        return A(i+1)
+    }
+}
+
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.1.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.1.kt
new file mode 100644
index 00000000000..40fe93d0623
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.1.kt
@@ -0,0 +1,28 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 4 -> sentence 1
+ * RELEVANT PLACES: statements, assignments -> paragraph 3 -> sentence 3
+ * NUMBER: 1
+ * DESCRIPTION: check for a  increment expression A++ expression A must be an assignable expression (an indexing expression)
+ */
+
+fun box(): String {
+    val arr = arrayOf(A(), A(), A())
+
+    val a = arr[0]++
+    val b = (arr[2]++).i
+
+    return if (arr[0].i == 1 && a.i == 0 && arr[1].i == 0 && arr[2].i == 1 && b == 0)
+        "OK"
+    else "NOK"
+}
+
+class A(var i :Int = 0) {
+    operator fun inc(): A {
+        return A(i+1)
+    }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.2.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.2.kt
new file mode 100644
index 00000000000..d9d1812edcf
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.2.kt
@@ -0,0 +1,30 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 4 -> sentence 1
+ * RELEVANT PLACES: statements, assignments -> paragraph 3 -> sentence 2
+ * NUMBER: 2
+ * DESCRIPTION: check for A++ expression A must be an assignable expression (a navigation expression referring to a mutable property)
+ */
+
+
+fun box(): String {
+    var b = B()
+    val x = b.a++
+    return if (x.i == 0 && b.a.i == 1)
+        "OK"
+    else "NOK"
+}
+
+class A(var i :Int = 0) {
+    operator fun inc(): A {
+        return A(i+1)
+    }
+}
+
+class B() {
+    var a: A = A()
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-5/pos/1.1.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-5/pos/1.1.kt
new file mode 100644
index 00000000000..44b35bf6ab0
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-5/pos/1.1.kt
@@ -0,0 +1,34 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 5 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: check the result of inc() is assigned to A, the return type of inc must be a subtype of A.
+ */
+
+
+fun box(): String {
+    var res = BIncrement(1 )
+    val res1: Any = res++
+    return if (res1 is BIncrement && res.i == 1 && res.j == 2 && res1.i == 0 && res1.j == 1) {
+        "OK"
+    } else
+        "NOK"
+}
+
+
+data class BIncrement(var j: Int, var k: Int = 0) : AIncrement(k) {
+    override operator fun inc(): BIncrement {
+        super.inc()
+        return BIncrement(j + 1, this.i+1)
+    }
+}
+
+open class AIncrement(var i: Int = 0) {
+    open operator fun inc(): AIncrement {
+        return AIncrement(i + 1)
+    }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.1.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.1.kt
new file mode 100644
index 00000000000..690c62a1f89
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.1.kt
@@ -0,0 +1,27 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 6 -> sentence 1
+ * RELEVANT PLACES: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 5 -> sentence 1
+ * overloadable-operators -> paragraph 4 -> sentence 1
+ * statements, assignments -> paragraph 3 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION:  check postfix increment expression
+ */
+
+fun box(): String {
+    var a = A()
+    val res: Any? = a++
+
+    return if (res is A ) "OK"
+    else "NOK"
+}
+
+class A(var i: Int = 0) {
+    operator fun inc(): A {
+        return A(i + 1)
+    }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.2.kt b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.2.kt
new file mode 100644
index 00000000000..1d94115ee27
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.2.kt
@@ -0,0 +1,29 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, postfix-operator-expressions, postfix-increment-expression -> paragraph 6 -> sentence 1
+ * RELEVANT PLACES: expressions, prefix-expressions, prefix-increment-expression -> paragraph 5 -> sentence 1
+ * overloadable-operators -> paragraph 4 -> sentence 1
+ * NUMBER: 2
+ * DESCRIPTION: check postfix increment expression has the same type as its operand expression
+ */
+
+
+fun box(): String {
+    var a = A()
+    val res: Any? = a++
+    return if ((res !is B) && (res is A)) "OK"
+    else "NOK"
+}
+
+open class A(var i :Int = 0) {
+
+    open operator fun inc(): B {
+        return B()
+    }
+}
+
+class B() : A() {}
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/testsMap.json b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/testsMap.json
new file mode 100644
index 00000000000..6e29ae72fdb
--- /dev/null
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/testsMap.json
@@ -0,0 +1,89 @@
+{
+  "6": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix increment expression has the same type as its operand expression",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": " check postfix increment expression",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
+  "5": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": " check postfix increment expression",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.1.kt",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix increment expression",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.2.kt",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix increment expression",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.1.kt",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check the result of inc() is assigned to A, the return type of inc must be a subtype of A.",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
+  "1": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix increment expression",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix increment expression",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
+  "4": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check for A++ expression A must be an assignable expression (a navigation expression referring to a mutable property)",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check for a  increment expression A++ expression A must be an assignable expression (an indexing expression)",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions/prefix-decrement-expression/testsMap.json b/compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions/prefix-decrement-expression/testsMap.json
index 20229892aaf..bb029391fe2 100644
--- a/compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions/prefix-decrement-expression/testsMap.json
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions/prefix-decrement-expression/testsMap.json
@@ -1,25 +1,14 @@
 {
-  "6": {
-    "pos": {
-      "1": [
-        {
-          "specVersion": "0.1-213",
-          "casesNumber": 0,
-          "description": "",
-          "unexpectedBehaviour": false
-        },
-        {
-          "specVersion": "0.1-213",
-          "casesNumber": 0,
-          "description": "",
-          "unexpectedBehaviour": false
-        }
-      ]
-    }
-  },
   "5": {
     "pos": {
       "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix decrement expression has the same type as its operand expression",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.2.kt",
+          "unexpectedBehaviour": false
+        },
         {
           "specVersion": "0.1-213",
           "casesNumber": 0,
@@ -57,6 +46,24 @@
       ]
     }
   },
+  "6": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
   "1": {
     "pos": {
       "1": [
diff --git a/compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions/prefix-increment-expression/testsMap.json b/compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions/prefix-increment-expression/testsMap.json
index d7fc0cb5cb0..8db6c99d8c0 100644
--- a/compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions/prefix-increment-expression/testsMap.json
+++ b/compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions/prefix-increment-expression/testsMap.json
@@ -1,25 +1,14 @@
 {
-  "6": {
-    "pos": {
-      "1": [
-        {
-          "specVersion": "0.1-213",
-          "casesNumber": 0,
-          "description": "",
-          "unexpectedBehaviour": false
-        },
-        {
-          "specVersion": "0.1-213",
-          "casesNumber": 0,
-          "description": "",
-          "unexpectedBehaviour": false
-        }
-      ]
-    }
-  },
   "5": {
     "pos": {
       "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check postfix increment expression has the same type as its operand expression",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.2.kt",
+          "unexpectedBehaviour": false
+        },
         {
           "specVersion": "0.1-213",
           "casesNumber": 0,
@@ -57,6 +46,24 @@
       ]
     }
   },
+  "6": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
   "1": {
     "pos": {
       "1": [
diff --git a/compiler/tests-spec/testData/codegen/box/linked/statements/assignments/testsMap.json b/compiler/tests-spec/testData/codegen/box/linked/statements/assignments/testsMap.json
index ea1265635df..57183bdceea 100644
--- a/compiler/tests-spec/testData/codegen/box/linked/statements/assignments/testsMap.json
+++ b/compiler/tests-spec/testData/codegen/box/linked/statements/assignments/testsMap.json
@@ -2,6 +2,20 @@
   "3": {
     "pos": {
       "2": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check for A++ expression A must be an assignable expression (a navigation expression referring to a mutable property)",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.2.kt",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check for A-- expression A must be an assignable expression (a navigation expression referring to a mutable property)",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.2.kt",
+          "unexpectedBehaviour": false
+        },
         {
           "specVersion": "0.1-213",
           "casesNumber": 0,
@@ -18,6 +32,20 @@
         }
       ],
       "3": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check for a  increment expression A++ expression A must be an assignable expression (an indexing expression)",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.1.kt",
+          "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 0,
+          "description": "check for a  decrement expression A-- expression A must be an assignable expression (an indexing expression)",
+          "path": "compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.1.kt",
+          "unexpectedBehaviour": false
+        },
         {
           "specVersion": "0.1-213",
           "casesNumber": 0,
diff --git a/compiler/tests-spec/tests/org/jetbrains/kotlin/spec/codegen/BlackBoxCodegenTestSpecGenerated.java b/compiler/tests-spec/tests/org/jetbrains/kotlin/spec/codegen/BlackBoxCodegenTestSpecGenerated.java
index 9021a6dcf34..9b9f71d531c 100644
--- a/compiler/tests-spec/tests/org/jetbrains/kotlin/spec/codegen/BlackBoxCodegenTestSpecGenerated.java
+++ b/compiler/tests-spec/tests/org/jetbrains/kotlin/spec/codegen/BlackBoxCodegenTestSpecGenerated.java
@@ -1481,6 +1481,323 @@ public class BlackBoxCodegenTestSpecGenerated extends AbstractBlackBoxCodegenTes
                 }
             }
 
+            @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions")
+            @TestDataPath("$PROJECT_ROOT")
+            @RunWith(JUnit3RunnerWithInners.class)
+            public static class Postfix_operator_expressions extends AbstractBlackBoxCodegenTestSpec {
+                private void runTest(String testDataFilePath) throws Exception {
+                    KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                }
+
+                public void testAllFilesPresentInPostfix_operator_expressions() throws Exception {
+                    KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions"), Pattern.compile("^(.+)\\.kt$"), true);
+                }
+
+                @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression")
+                @TestDataPath("$PROJECT_ROOT")
+                @RunWith(JUnit3RunnerWithInners.class)
+                public static class Postfix_decrement_expression extends AbstractBlackBoxCodegenTestSpec {
+                    private void runTest(String testDataFilePath) throws Exception {
+                        KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                    }
+
+                    public void testAllFilesPresentInPostfix_decrement_expression() throws Exception {
+                        KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression"), Pattern.compile("^(.+)\\.kt$"), true);
+                    }
+
+                    @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1")
+                    @TestDataPath("$PROJECT_ROOT")
+                    @RunWith(JUnit3RunnerWithInners.class)
+                    public static class P_1 extends AbstractBlackBoxCodegenTestSpec {
+                        private void runTest(String testDataFilePath) throws Exception {
+                            KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                        }
+
+                        public void testAllFilesPresentInP_1() throws Exception {
+                            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1"), Pattern.compile("^(.+)\\.kt$"), true);
+                        }
+
+                        @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos")
+                        @TestDataPath("$PROJECT_ROOT")
+                        @RunWith(JUnit3RunnerWithInners.class)
+                        public static class Pos extends AbstractBlackBoxCodegenTestSpec {
+                            private void runTest(String testDataFilePath) throws Exception {
+                                KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                            }
+
+                            @TestMetadata("1.1.kt")
+                            public void test1_1() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.1.kt");
+                            }
+
+                            @TestMetadata("1.2.kt")
+                            public void test1_2() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos/1.2.kt");
+                            }
+
+                            public void testAllFilesPresentInPos() throws Exception {
+                                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-1/pos"), Pattern.compile("^(.+)\\.kt$"), true);
+                            }
+                        }
+                    }
+
+                    @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4")
+                    @TestDataPath("$PROJECT_ROOT")
+                    @RunWith(JUnit3RunnerWithInners.class)
+                    public static class P_4 extends AbstractBlackBoxCodegenTestSpec {
+                        private void runTest(String testDataFilePath) throws Exception {
+                            KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                        }
+
+                        public void testAllFilesPresentInP_4() throws Exception {
+                            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4"), Pattern.compile("^(.+)\\.kt$"), true);
+                        }
+
+                        @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos")
+                        @TestDataPath("$PROJECT_ROOT")
+                        @RunWith(JUnit3RunnerWithInners.class)
+                        public static class Pos extends AbstractBlackBoxCodegenTestSpec {
+                            private void runTest(String testDataFilePath) throws Exception {
+                                KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                            }
+
+                            @TestMetadata("1.1.kt")
+                            public void test1_1() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.1.kt");
+                            }
+
+                            @TestMetadata("1.2.kt")
+                            public void test1_2() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos/1.2.kt");
+                            }
+
+                            public void testAllFilesPresentInPos() throws Exception {
+                                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-4/pos"), Pattern.compile("^(.+)\\.kt$"), true);
+                            }
+                        }
+                    }
+
+                    @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-5")
+                    @TestDataPath("$PROJECT_ROOT")
+                    @RunWith(JUnit3RunnerWithInners.class)
+                    public static class P_5 extends AbstractBlackBoxCodegenTestSpec {
+                        private void runTest(String testDataFilePath) throws Exception {
+                            KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                        }
+
+                        public void testAllFilesPresentInP_5() throws Exception {
+                            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-5"), Pattern.compile("^(.+)\\.kt$"), true);
+                        }
+
+                        @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-5/pos")
+                        @TestDataPath("$PROJECT_ROOT")
+                        @RunWith(JUnit3RunnerWithInners.class)
+                        public static class Pos extends AbstractBlackBoxCodegenTestSpec {
+                            private void runTest(String testDataFilePath) throws Exception {
+                                KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                            }
+
+                            @TestMetadata("1.1.kt")
+                            public void test1_1() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-5/pos/1.1.kt");
+                            }
+
+                            public void testAllFilesPresentInPos() throws Exception {
+                                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-5/pos"), Pattern.compile("^(.+)\\.kt$"), true);
+                            }
+                        }
+                    }
+
+                    @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6")
+                    @TestDataPath("$PROJECT_ROOT")
+                    @RunWith(JUnit3RunnerWithInners.class)
+                    public static class P_6 extends AbstractBlackBoxCodegenTestSpec {
+                        private void runTest(String testDataFilePath) throws Exception {
+                            KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                        }
+
+                        public void testAllFilesPresentInP_6() throws Exception {
+                            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6"), Pattern.compile("^(.+)\\.kt$"), true);
+                        }
+
+                        @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos")
+                        @TestDataPath("$PROJECT_ROOT")
+                        @RunWith(JUnit3RunnerWithInners.class)
+                        public static class Pos extends AbstractBlackBoxCodegenTestSpec {
+                            private void runTest(String testDataFilePath) throws Exception {
+                                KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                            }
+
+                            @TestMetadata("1.1.kt")
+                            public void test1_1() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.1.kt");
+                            }
+
+                            @TestMetadata("1.2.kt")
+                            public void test1_2() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos/1.2.kt");
+                            }
+
+                            public void testAllFilesPresentInPos() throws Exception {
+                                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-decrement-expression/p-6/pos"), Pattern.compile("^(.+)\\.kt$"), true);
+                            }
+                        }
+                    }
+                }
+
+                @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression")
+                @TestDataPath("$PROJECT_ROOT")
+                @RunWith(JUnit3RunnerWithInners.class)
+                public static class Postfix_increment_expression extends AbstractBlackBoxCodegenTestSpec {
+                    private void runTest(String testDataFilePath) throws Exception {
+                        KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                    }
+
+                    public void testAllFilesPresentInPostfix_increment_expression() throws Exception {
+                        KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression"), Pattern.compile("^(.+)\\.kt$"), true);
+                    }
+
+                    @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1")
+                    @TestDataPath("$PROJECT_ROOT")
+                    @RunWith(JUnit3RunnerWithInners.class)
+                    public static class P_1 extends AbstractBlackBoxCodegenTestSpec {
+                        private void runTest(String testDataFilePath) throws Exception {
+                            KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                        }
+
+                        public void testAllFilesPresentInP_1() throws Exception {
+                            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1"), Pattern.compile("^(.+)\\.kt$"), true);
+                        }
+
+                        @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos")
+                        @TestDataPath("$PROJECT_ROOT")
+                        @RunWith(JUnit3RunnerWithInners.class)
+                        public static class Pos extends AbstractBlackBoxCodegenTestSpec {
+                            private void runTest(String testDataFilePath) throws Exception {
+                                KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                            }
+
+                            @TestMetadata("1.1.kt")
+                            public void test1_1() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.1.kt");
+                            }
+
+                            @TestMetadata("1.2.kt")
+                            public void test1_2() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos/1.2.kt");
+                            }
+
+                            public void testAllFilesPresentInPos() throws Exception {
+                                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-1/pos"), Pattern.compile("^(.+)\\.kt$"), true);
+                            }
+                        }
+                    }
+
+                    @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4")
+                    @TestDataPath("$PROJECT_ROOT")
+                    @RunWith(JUnit3RunnerWithInners.class)
+                    public static class P_4 extends AbstractBlackBoxCodegenTestSpec {
+                        private void runTest(String testDataFilePath) throws Exception {
+                            KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                        }
+
+                        public void testAllFilesPresentInP_4() throws Exception {
+                            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4"), Pattern.compile("^(.+)\\.kt$"), true);
+                        }
+
+                        @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos")
+                        @TestDataPath("$PROJECT_ROOT")
+                        @RunWith(JUnit3RunnerWithInners.class)
+                        public static class Pos extends AbstractBlackBoxCodegenTestSpec {
+                            private void runTest(String testDataFilePath) throws Exception {
+                                KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                            }
+
+                            @TestMetadata("1.1.kt")
+                            public void test1_1() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.1.kt");
+                            }
+
+                            @TestMetadata("1.2.kt")
+                            public void test1_2() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos/1.2.kt");
+                            }
+
+                            public void testAllFilesPresentInPos() throws Exception {
+                                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-4/pos"), Pattern.compile("^(.+)\\.kt$"), true);
+                            }
+                        }
+                    }
+
+                    @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-5")
+                    @TestDataPath("$PROJECT_ROOT")
+                    @RunWith(JUnit3RunnerWithInners.class)
+                    public static class P_5 extends AbstractBlackBoxCodegenTestSpec {
+                        private void runTest(String testDataFilePath) throws Exception {
+                            KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                        }
+
+                        public void testAllFilesPresentInP_5() throws Exception {
+                            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-5"), Pattern.compile("^(.+)\\.kt$"), true);
+                        }
+
+                        @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-5/pos")
+                        @TestDataPath("$PROJECT_ROOT")
+                        @RunWith(JUnit3RunnerWithInners.class)
+                        public static class Pos extends AbstractBlackBoxCodegenTestSpec {
+                            private void runTest(String testDataFilePath) throws Exception {
+                                KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                            }
+
+                            @TestMetadata("1.1.kt")
+                            public void test1_1() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-5/pos/1.1.kt");
+                            }
+
+                            public void testAllFilesPresentInPos() throws Exception {
+                                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-5/pos"), Pattern.compile("^(.+)\\.kt$"), true);
+                            }
+                        }
+                    }
+
+                    @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6")
+                    @TestDataPath("$PROJECT_ROOT")
+                    @RunWith(JUnit3RunnerWithInners.class)
+                    public static class P_6 extends AbstractBlackBoxCodegenTestSpec {
+                        private void runTest(String testDataFilePath) throws Exception {
+                            KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                        }
+
+                        public void testAllFilesPresentInP_6() throws Exception {
+                            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6"), Pattern.compile("^(.+)\\.kt$"), true);
+                        }
+
+                        @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos")
+                        @TestDataPath("$PROJECT_ROOT")
+                        @RunWith(JUnit3RunnerWithInners.class)
+                        public static class Pos extends AbstractBlackBoxCodegenTestSpec {
+                            private void runTest(String testDataFilePath) throws Exception {
+                                KotlinTestUtils.runTest(this::doTest, this, testDataFilePath);
+                            }
+
+                            @TestMetadata("1.1.kt")
+                            public void test1_1() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.1.kt");
+                            }
+
+                            @TestMetadata("1.2.kt")
+                            public void test1_2() throws Exception {
+                                runTest("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos/1.2.kt");
+                            }
+
+                            public void testAllFilesPresentInPos() throws Exception {
+                                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/tests-spec/testData/codegen/box/linked/expressions/postfix-operator-expressions/postfix-increment-expression/p-6/pos"), Pattern.compile("^(.+)\\.kt$"), true);
+                            }
+                        }
+                    }
+                }
+            }
+
             @TestMetadata("compiler/tests-spec/testData/codegen/box/linked/expressions/prefix-expressions")
             @TestDataPath("$PROJECT_ROOT")
             @RunWith(JUnit3RunnerWithInners.class)