From eac8caca04ed0fe9960242b3f37de7303c671042 Mon Sep 17 00:00:00 2001
From: Dave Cridland <dave@cridland.net>
Date: Tue, 7 Nov 2023 13:31:44 +0000
Subject: [PATCH] Use overriden resume for co_await on tasklet

Issue here is that if mixed-mode resumption ends up in use,
then a deferred resume can "continue" after a co_await
immediate resume, and then the coroutine handle used
for the deferred resume is dangling.
---
 sigslot/tasklet.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sigslot/tasklet.h b/sigslot/tasklet.h
index 254467d..969c24e 100644
--- a/sigslot/tasklet.h
+++ b/sigslot/tasklet.h
@@ -8,6 +8,7 @@
 #include <sigslot/sigslot.h>
 #include <coroutine>
 #include <string>
+#include <stdexcept>
 
 namespace sigslot {
     template<typename T> struct tasklet;
@@ -103,7 +104,7 @@ namespace sigslot {
 
             void resolve() {
                 resolved = true;
-                if (awaiting) awaiting.resume();
+                if (awaiting) resume(awaiting);
             }
 
             virtual ~awaitable_base() = default;