Fix compiler tests

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeFromDifferentSources.kt

@@ -17,7 +17,7 @@ fun test3() {
 fun throwNPE() = null!!
 
 class A {
-    fun plus(<!UNUSED_PARAMETER!>a<!>: A): Nothing = throw Exception()
+    operator fun plus(<!UNUSED_PARAMETER!>a<!>: A): Nothing = throw Exception()
 }
 
 fun bar() {}

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeFromDifferentSources.txt

@@ -11,7 +11,7 @@ package c {
         public constructor A()
         public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
         public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-        public final fun plus(/*0*/ a: c.A): kotlin.Nothing
+        public final operator fun plus(/*0*/ a: c.A): kotlin.Nothing
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
     }
 }

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeInArrayAccess.kt

@@ -5,12 +5,12 @@ fun testArrayAccess1(array: Array<Any>) {
 }
 
 fun testArrayAccess2() {
-    fun Nothing.get(i: Int, s: String) {}
+    operator fun Nothing.get(i: Int, s: String) {}
     todo()<!UNREACHABLE_CODE!>[1, ""]<!>
 }
 
 fun testAraryAccess3() {
-    fun Nothing.get(n: Nothing) {}
+    operator fun Nothing.get(n: Nothing) {}
     todo()<!UNREACHABLE_CODE!>[todo()]<!>
 }
 
@@ -23,17 +23,17 @@ fun testArrayAssignment2(array: Array<Any>) {
 }
 
 fun testArrayAssignment3(n: Nothing) {
-    fun Nothing.set(i: Int, j: Int) {}
+    operator fun Nothing.set(i: Int, j: Int) {}
     n<!UNREACHABLE_CODE!>[1] = 2<!>
 }
 
 fun testArrayAssignment4(n: Nothing) {
-    fun Nothing.set(i: Int, a: Any) {}
+    operator fun Nothing.set(i: Int, a: Any) {}
     n<!UNREACHABLE_CODE!>[1] = todo()<!>
 }
 
 fun testArrayPlusAssign(array: Array<Any>) {
-    fun Any.plusAssign(a: Any) {}
+    operator fun Any.plusAssign(a: Any) {}
     array[1] <!UNREACHABLE_CODE!>+=<!> todo()
 }
 

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeInAssignment.kt

@@ -8,7 +8,7 @@ fun testVariableDeclaration() {
 }
 
 fun testPlusAssign() {
-    fun Int.plusAssign(<!UNUSED_PARAMETER!>i<!>: Int) {}
+    operator fun Int.plusAssign(<!UNUSED_PARAMETER!>i<!>: Int) {}
 
     var a = 1
     a <!UNREACHABLE_CODE!>+=<!> todo()

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeInBinaryExpressions.kt

@@ -1,5 +1,5 @@
 fun testBinary1() {
-    fun Int.times(<!UNUSED_PARAMETER!>s<!>: String) {}
+    operator fun Int.times(<!UNUSED_PARAMETER!>s<!>: String) {}
 
     todo() <!UNREACHABLE_CODE!>* ""<!>
 }

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeInInnerExpressions.kt

@@ -1,12 +1,12 @@
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 fun testCompound() {
-    fun Nothing.get(i: Int) {}
+    operator fun Nothing.get(i: Int) {}
     todo()<!UNREACHABLE_CODE!><!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>[12]<!>
 }
 
 fun testCompound1() {
-    fun Int.times(s: String): Array<String> = throw Exception()
+    operator fun Int.times(s: String): Array<String> = throw Exception()
     <!UNREACHABLE_CODE!>(<!>todo() <!UNREACHABLE_CODE!>* "")[1]<!>
 }
 

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeInLoops.kt

@@ -1,5 +1,5 @@
 fun testFor() {
-    fun Nothing.iterator() = (0..1).iterator()
+    operator fun Nothing.iterator() = (0..1).iterator()
 
     <!UNREACHABLE_CODE!>for (i in<!> todo()<!UNREACHABLE_CODE!>) {}<!>
 }

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeInUnaryExpr.kt

@@ -1,10 +1,10 @@
 fun testPrefix() {
-    fun Any.not() {}
+    operator fun Any.not() {}
     <!UNREACHABLE_CODE!>!<!>todo()
 }
 
 fun testPostfixWithCall(n: Nothing) {
-    fun Nothing.inc(): Nothing = this
+    operator fun Nothing.inc(): Nothing = this
     n<!UNREACHABLE_CODE!>++<!>
 }