From dd7b6e22451427342c566bd331192a76a3d32d32 Mon Sep 17 00:00:00 2001
From: dgp <dgp@users.sourceforge.net>
Date: Wed, 4 Mar 2020 20:50:38 +0000
Subject: The close routines of the "tcp" channel type were failing to record
 error messages and error codes.

---
 unix/tclUnixSock.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/unix/tclUnixSock.c b/unix/tclUnixSock.c
index a00559a..0dd8e86 100644
--- a/unix/tclUnixSock.c
+++ b/unix/tclUnixSock.c
@@ -631,6 +631,9 @@ TcpCloseProc(
         freeaddrinfo(statePtr->myaddrlist);
     }
     ckfree(statePtr);
+    if (interp && errorCode) {
+	Tcl_SetResult(interp, (char *)Tcl_PosixError(interp), TCL_STATIC);
+    }
     return errorCode;
 }
 
@@ -660,6 +663,7 @@ TcpClose2Proc(
     TcpState *statePtr = instanceData;
     int readError = 0;
     int writeError = 0;
+    int errorCode = 0;
 
     /*
      * Shutdown the OS socket handle.
@@ -673,7 +677,12 @@ TcpClose2Proc(
     if ((flags & TCL_CLOSE_WRITE) && (shutdown(statePtr->fds.fd, SHUT_WR) < 0)) {
 	writeError = errno;
     }
-    return (readError != 0) ? readError : writeError;
+
+    errorCode = (readError != 0) ? readError : writeError;
+    if (interp && errorCode) {
+	Tcl_SetResult(interp, (char *)Tcl_PosixError(interp), TCL_STATIC);
+    }
+    return errorCode;
 }
 
 /*
-- 
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