From 51500a1d7096395be9162599fae647ec121db91d Mon Sep 17 00:00:00 2001
From: Emil Fresk <emil.fresk@gmail.com>
Date: Thu, 8 Apr 2021 09:12:08 +0200
Subject: Fixed UB in `spawn_at`

---
 src/tq.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'src/tq.rs')

diff --git a/src/tq.rs b/src/tq.rs
index 3864025..985e0f8 100644
--- a/src/tq.rs
+++ b/src/tq.rs
@@ -42,7 +42,7 @@ where
         nr: NotReady<Mono, Task>,
         enable_interrupt: F1,
         pend_handler: F2,
-        mono: &mut Mono,
+        mono: Option<&mut Mono>,
     ) where
         F1: FnOnce(),
         F2: FnOnce(),
@@ -57,7 +57,9 @@ where
 
         if if_heap_max_greater_than_nr {
             if Mono::DISABLE_INTERRUPT_ON_EMPTY_QUEUE && self.0.is_empty() {
-                mono.enable_timer();
+                if let Some(mono) = mono {
+                    mono.enable_timer();
+                }
                 enable_interrupt();
             }
 
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