fixes #4371

tests/async/treturn_await.nim

@@ -0,0 +1,23 @@
+
+# bug #4371
+
+import strutils, asyncdispatch, asynchttpserver
+
+type
+  List[A] = ref object
+    value: A
+    next: List[A]
+  StrPair* = tuple[k, v: string]
+  Context* = object
+    position*: int
+    accept*: bool
+    headers*: List[StrPair]
+  Handler* = proc(req: ref Request, ctx: Context): Future[Context]
+
+proc logging*(handler: Handler): auto =
+  proc h(req: ref Request, ctx: Context): Future[Context] {.async.} =
+    let ret = handler(req, ctx)
+    debugEcho "$3 $1 $2".format(req.reqMethod, req.url.path, req.hostname)
+    return await ret
+
+  return h

tests/metatype/tautoproc.nim

@@ -1,5 +1,5 @@
 discard """
-  output: "empty"
+  output: "void"
 """
 
 # bug #898

tests/metatype/tvoid_must_not_match.nim

@@ -0,0 +1,21 @@
+discard """
+  errormsg: "type mismatch: got (Future[system.int], void)"
+  line: 20
+"""
+
+type
+  Future[T] = object
+    value: T
+
+proc complete[T](x: T) =
+  echo "completed"
+  let y = x
+
+
+proc complete*[T](future: var Future[T], val: T) =
+  future.value = val
+
+var a: Future[int]
+
+complete(a):
+  echo "yielding void"

tests/typerel/temptynode.nim

@@ -1,6 +1,6 @@
 discard """
   line: 16
-  errormsg: "type mismatch: got (empty)"
+  errormsg: "type mismatch: got (void)"
 """
 
 # bug #950