// DIAGNOSTICS: -UNUSED_EXPRESSION -UNUSED_PARAMETER -UNUSED_VARIABLE -UNUSED_VALUE -VARIABLE_WITH_REDUNDANT_INITIALIZER
// SKIP_TXT

/*
 * KOTLIN DIAGNOSTICS NOT LINKED SPEC TEST (POSITIVE)
 *
 * SECTIONS: dfa
 * NUMBER: 52
 * DESCRIPTION: Raw data flow analysis test
 * HELPERS: classes, objects, typealiases, functions, enumClasses, interfaces, sealedClasses
 */

/*
 * TESTCASE NUMBER: 1
 * UNEXPECTED BEHAVIOUR
 * ISSUES: KT-22175
 */
fun case_1(x: String?) = x
fun case_1(x: Int?) = x
fun case_1() {
    var x: Int? = 10
    x = null
    <!OVERLOAD_RESOLUTION_AMBIGUITY!>case_1<!>(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>)
}

// TESTCASE NUMBER: 2
fun case_2(x: Int?) = x
fun case_2(x: Nothing?) = x
fun case_2() {
    var x: Int? = 10
    x = null
    case_2(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>)
}

// TESTCASE NUMBER: 3
fun case_3(x: String?) = x
fun case_3() {
    var x: Int? = 10
    x = null
    case_3(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>)
}

/*
 * TESTCASE NUMBER: 4
 * UNEXPECTED BEHAVIOUR
 * ISSUES: KT-22175
 */
fun String?.case_4() = this
fun Int?.case_4() = this
fun case_4() {
    var x: Int? = 10
    x = null
    <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>.<!OVERLOAD_RESOLUTION_AMBIGUITY!>case_4<!>()
}

// TESTCASE NUMBER: 5
fun Int?.case_5() = this
fun Nothing?.case_5() = this
fun case_5() {
    var x: Int? = 10
    x = null
    <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>.case_5()
}

// TESTCASE NUMBER: 6
fun String?.case_6() = this
fun case_6() {
    var x: Int? = 10
    x = null
    <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>.case_6()
}

/*
 * TESTCASE NUMBER: 7
 * UNEXPECTED BEHAVIOUR
 * ISSUES: KT-22175
 */
fun <T : String?> T.case_7() = this
fun <T : Int?> T.case_7() = this
fun case_7() {
    var x: Int? = 10
    x = null
    <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>.<!OVERLOAD_RESOLUTION_AMBIGUITY!>case_7<!>()
}

// TESTCASE NUMBER: 8
fun <T : Int?> T.case_8() = this
fun <T : Nothing?> T.case_8() = this
fun case_8() {
    var x: Int? = 10
    x = null
    <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>.case_8()
}

// TESTCASE NUMBER: 9
fun <T : String?> T.case_9() = this
fun case_9() {
    var x: Int? = 10
    x = null
    <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>.case_9()
}

/*
 * TESTCASE NUMBER: 10
 * UNEXPECTED BEHAVIOUR
 * ISSUES: KT-22175
 */
fun <T : <!FINAL_UPPER_BOUND!>String<!>> T?.case_10() = this
fun <T : <!FINAL_UPPER_BOUND!>Int<!>> T?.case_10() = this
fun case_10() {
    var x: Int? = 10
    x = null
    <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>.<!OVERLOAD_RESOLUTION_AMBIGUITY!>case_10<!>()
}

// TESTCASE NUMBER: 11
fun <T : <!FINAL_UPPER_BOUND!>String<!>> T?.case_11() = this
fun case_11() {
    var x: Int? = 10
    x = null
    <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing?")!>x<!>.case_11()
}
