channel send() condition variable lock ordering (#20879)

(cherry picked from commit 79b25a9)
nim-lang · Apr 26, 2023 · 7e7b35b · 7e7b35b
1 parent 7e80df2
commit 7e7b35b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/system/channels_builtin.nim b/lib/system/channels_builtin.nim
@@ -360,8 +360,8 @@ proc sendImpl(q: PRawChannel, typ: PNimType, msg: pointer, noBlock: bool): bool
 
   rawSend(q, msg, typ)
   q.elemType = typ
-  releaseSys(q.lock)
   signalSysCond(q.cond)
+  releaseSys(q.lock)
   result = true
 
 proc send*[TMsg](c: var Channel[TMsg], msg: sink TMsg) {.inline.} =