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[gnulib.git] / lib / dup3.c

diff --git a/lib/dup3.c b/lib/dup3.c
index 906594e..879a907 100644 (file)
--- a/lib/dup3.c
+++ b/lib/dup3.c
@@ -29,6 +29,8 @@
 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
 /* Native Woe32 API.  */
 
+# include <string.h>
+
 /* Get declarations of the Win32 API functions.  */
 # define WIN32_LEAN_AND_MEAN
 # include <windows.h>
@@ -61,6 +63,10 @@ dup3 (int oldfd, int newfd, int flags)
        if (!(result < 0 && errno == ENOSYS))
          {
            have_dup3_really = 1;
+#if REPLACE_FCHDIR
+           if (0 <= result)
+             result = _gl_register_dup (oldfd, newfd);
+#endif
            return result;
          }
        have_dup3_really = -1;
@@ -178,6 +184,10 @@ dup3 (int oldfd, int newfd, int flags)
        errno = saved_errno;
       }
 
+#if REPLACE_FCHDIR
+      if (result == newfd)
+       result = _gl_register_dup (oldfd, newfd);
+#endif
       return result;
     }
 
@@ -216,5 +226,8 @@ dup3 (int oldfd, int newfd, int flags)
     setmode (newfd, O_TEXT);
 #endif
 
+#if REPLACE_FCHDIR
+  newfd = _gl_register_dup (oldfd, newfd);
+#endif
   return newfd;
 }