Fix for EA-68871 #EA-68871 Fixed

compiler/testData/diagnostics/tests/when/EmptyConditionWithExpression.kt

@@ -0,0 +1,8 @@
+// EA-68871: empty when condition
+fun foo(arg: Int): Int {
+    when (arg) {
+        0 -> return 0
+        <!SYNTAX!><!>-> return 4
+        else -> return -1
+    }
+}

compiler/testData/diagnostics/tests/when/EmptyConditionWithExpression.txt

@@ -0,0 +1,3 @@
+package
+
+internal fun foo(/*0*/ arg: kotlin.Int): kotlin.Int

compiler/testData/diagnostics/tests/when/EmptyConditionWithExpressionEnum.kt

@@ -0,0 +1,9 @@
+// EA-68871: empty when condition
+enum class My { FIRST, SECOND }
+fun foo(arg: My): Int {
+    when (arg) {
+        My.FIRST -> return 0
+        <!SYNTAX!><!>-> return 4
+        else -> return -1
+    }
+}

compiler/testData/diagnostics/tests/when/EmptyConditionWithExpressionEnum.txt

@@ -0,0 +1,37 @@
+package
+
+internal fun foo(/*0*/ arg: My): kotlin.Int
+
+internal final enum class My : kotlin.Enum<My> {
+    public enum entry FIRST : My {
+        private constructor FIRST()
+        public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: My): kotlin.Int
+        public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public final override /*1*/ /*fake_override*/ fun name(): kotlin.String
+        public final override /*1*/ /*fake_override*/ fun ordinal(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public enum entry SECOND : My {
+        private constructor SECOND()
+        public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: My): kotlin.Int
+        public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public final override /*1*/ /*fake_override*/ fun name(): kotlin.String
+        public final override /*1*/ /*fake_override*/ fun ordinal(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    private constructor My()
+    public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: My): kotlin.Int
+    public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public final override /*1*/ /*fake_override*/ fun name(): kotlin.String
+    public final override /*1*/ /*fake_override*/ fun ordinal(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    // Static members
+    public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): My
+    public final /*synthesized*/ fun values(): kotlin.Array<My>
+}