Fix non-suspending labeled loop in suspend function

Fix bug when labeled loop, which does not contain suspend calls in its body, was losing its label
2017-04-27 17:37:17 +03:00
parent 6047746c90
commit c8c3d24b45
6 changed files with 82 additions and 1 deletions
@@ -0,0 +1,50 @@
+// IGNORE_BACKEND: NATIVE
+// WITH_RUNTIME
+// WITH_COROUTINES
+import kotlin.coroutines.experimental.*
+import kotlin.coroutines.experimental.intrinsics.*
+
+fun builder(c: suspend () -> Unit): Unit {
+    c.startCoroutine(handleResultContinuation {
+        finished = true
+    })
+}
+
+fun box(): String {
+    builder {
+        var i = 0
+        var j = 0
+        outer@while (i < 10) {
+            while (j < 10) {
+                if (i + j > 3) break@outer
+                log += "$i,$j;"
+                suspendAndContinue()
+                j++
+            }
+            log += "i++;"
+            i++
+        }
+        log += "done;"
+        suspendAndContinue()
+    }
+
+    while (!finished) {
+        log += "@;"
+        postponed()
+    }
+
+    if (log != "0,0;@;0,1;@;0,2;@;0,3;@;done;@;") return "fail: $log"
+
+    return "OK"
+}
+
+suspend fun suspendAndContinue(): Unit = suspendCoroutineOrReturn { c ->
+    postponed = {
+        c.resume(Unit)
+    }
+    COROUTINE_SUSPENDED
+}
+
+var postponed: () -> Unit = {}
+var finished = false
+var log = ""