From e99182dab3093f1645f9e4ff216aa752d7443fb1 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 1 Jan 2026 13:47:45 +0000
Subject:  Save/restore errno in all safe wrappers

---
 src/libstddjb/fd_move.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'src/libstddjb/fd_move.c')

diff --git a/src/libstddjb/fd_move.c b/src/libstddjb/fd_move.c
index c35e4d6..09662aa 100644
--- a/src/libstddjb/fd_move.c
+++ b/src/libstddjb/fd_move.c
@@ -7,12 +7,13 @@
 
 int fd_move (int to, int from)
 {
+  int e = errno ;
   int r ;
   if (to == from) return uncoe(to) ;
-  do
-    r = dup2(from, to) ;
-  while ((r == -1) && (errno == EINTR)) ;
+  do r = dup2(from, to) ;
+  while (r == -1 && errno == EINTR) ;
   if (r < 0) return r ;
+  errno = e ;
   fd_close(from) ;
   return 0 ;
 }
-- 
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