Backwards compatibility test

Author: ndkoval

kotlinx-coroutines-core/common/src/selects/Select.kt

@@ -50,10 +50,10 @@ import kotlin.native.concurrent.*
  * Use [yield] or [CoroutineScope.isActive] to periodically check for cancellation in tight loops if needed.
  */
 public suspend inline fun <R> select(crossinline builder: SelectBuilder<R>.() -> Unit): R {
+    contract {
+        callsInPlace(builder, InvocationKind.EXACTLY_ONCE)
+    }
     return selectOld(builder)
-//    contract {
-//        callsInPlace(builder, InvocationKind.EXACTLY_ONCE)
-//    }
 //    return SelectImplementation<R>(coroutineContext).run {
 //        builder(this)
 //        // TAIL-CALL OPTIMIZATION: the only

kotlinx-coroutines-core/common/src/selects/SelectUnbiased.kt

@@ -19,10 +19,10 @@ import kotlin.coroutines.*
  * See [select] function description for all the other details.
  */
 public suspend inline fun <R> selectUnbiased(crossinline builder: SelectBuilder<R>.() -> Unit): R {
+    contract {
+        callsInPlace(builder, InvocationKind.EXACTLY_ONCE)
+    }
     return selectUnbiasedOld(builder)
-//    contract {
-//        callsInPlace(builder, InvocationKind.EXACTLY_ONCE)
-//    }
 //    return UnbiasedSelectImplementation<R>(coroutineContext).run {
 //        builder(this)
 //        doSelect()