Make bare await die (fixes #125257)

rakudo · May 28, 2015 · d841d4e · d841d4e
1 parent 478994f
commit d841d4e
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/src/core/asyncops.pm b/src/core/asyncops.pm
@@ -4,15 +4,18 @@
 # pool that blocks; for now, this cheat gets the basic idea in place.
 
 proto sub await(|) { * }
+multi sub await() {
+    die "Must specify a Promise or Channel to await on";
+}
 multi sub await(Promise:D $p) {
     $p.result
 }
-multi sub await(*@awaitables) {
-    @awaitables.eager.map(&await)
-}
 multi sub await(Channel:D $c) {
     $c.receive
 }
+multi sub await(*@awaitables) {
+    @awaitables.eager.map(&await)
+}
 
 sub cas (\val,&code) { val = code(val) } # naive implementation of cas