-#serial 24
-dnl Copyright (C) 2002, 2005, 2007, 2009-2015 Free Software Foundation, Inc.
+#serial 25
+dnl Copyright (C) 2002, 2005, 2007, 2009-2016 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
result |= 32;
dup2 (2, 255);
dup2 (2, 256);
+ /* On OS/2 kLIBC, dup2() does not work on a directory fd. */
+ {
+ int fd = open (".", O_RDONLY);
+ if (fd == -1)
+ result |= 64;
+ else if (dup2 (fd, fd + 1) == -1)
+ result |= 128;
+
+ close (fd);
+ }
return result;]])
],
[gl_cv_func_dup2_works=yes], [gl_cv_func_dup2_works=no],
gl_cv_func_dup2_works="guessing no" ;;
*-android*) # implemented using dup3(), which fails if oldfd == newfd
gl_cv_func_dup2_works="guessing no" ;;
+ os2*) # on OS/2 kLIBC, dup2() does not work on a directory fd.
+ gl_cv_func_dup2_works="guessing no" ;;
*) gl_cv_func_dup2_works="guessing yes" ;;
esac])
])