From 4df980c07b44acd34bc2bc433368bd327ef09927 Mon Sep 17 00:00:00 2001
From: "jan.nijtmans" <nijtmans@users.sourceforge.net>
Date: Tue, 29 Jun 2021 16:03:49 +0000
Subject: TCL_THREADS=0 means no threads too

---
 generic/tclIORChan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/generic/tclIORChan.c b/generic/tclIORChan.c
index 9097bf4..cc45873 100644
--- a/generic/tclIORChan.c
+++ b/generic/tclIORChan.c
@@ -2090,7 +2090,7 @@ ReflectTruncate(
      * Are we in the correct thread?
      */
 
-#ifdef TCL_THREADS
+#if TCL_THREADS
     if (rcPtr->thread != Tcl_GetCurrentThread()) {
 	ForwardParam p;
 
-- 
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