Merge from gnulib.

lib/gnulib.mk

@@ -857,6 +857,7 @@ stdlib.h: stdlib.in.h $(top_builddir)/config.status $(CXXDEFS_H) \
 	      -e 's|@''REPLACE_MALLOC''@|$(REPLACE_MALLOC)|g' \
 	      -e 's|@''REPLACE_MBTOWC''@|$(REPLACE_MBTOWC)|g' \
 	      -e 's|@''REPLACE_MKSTEMP''@|$(REPLACE_MKSTEMP)|g' \
+	      -e 's|@''REPLACE_PTSNAME''@|$(REPLACE_PTSNAME)|g' \
 	      -e 's|@''REPLACE_PTSNAME_R''@|$(REPLACE_PTSNAME_R)|g' \
 	      -e 's|@''REPLACE_PUTENV''@|$(REPLACE_PUTENV)|g' \
 	      -e 's|@''REPLACE_RANDOM_R''@|$(REPLACE_RANDOM_R)|g' \

lib/pselect.c

@@ -33,6 +33,8 @@
    pointer parameter stands for no descriptors, an infinite timeout,
    or an unaffected signal mask.  */
 
+#if !HAVE_PSELECT
+
 int
 pselect (int nfds, fd_set *restrict rfds,
          fd_set *restrict wfds, fd_set *restrict xfds,
@@ -74,3 +76,35 @@ pselect (int nfds, fd_set *restrict rfds,
 
   return select_result;
 }
+
+#else /* HAVE_PSELECT */
+# include <unistd.h>
+# undef pselect
+
+int
+rpl_pselect (int nfds, fd_set *restrict rfds,
+	     fd_set *restrict wfds, fd_set *restrict xfds,
+             struct timespec const *restrict timeout,
+	     sigset_t const *restrict sigmask)
+{
+  int i;
+
+  /* FreeBSD 8.2 has a bug: it does not always detect invalid fds.  */
+  if (nfds < 0 || nfds > FD_SETSIZE)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  for (i = 0; i < nfds; i++)
+    {
+      if (((rfds && FD_ISSET (i, rfds))
+           || (wfds && FD_ISSET (i, wfds))
+           || (xfds && FD_ISSET (i, xfds)))
+          && dup2 (i, i) != i)
+        return -1;
+    }
+
+  return pselect (nfds, rfds, wfds, xfds, timeout, sigmask);
+}
+
+#endif

lib/stdlib.in.h

@@ -457,10 +457,19 @@ _GL_WARN_ON_USE (posix_openpt, "posix_openpt is not portable - "
 #if @GNULIB_PTSNAME@
 /* Return the pathname of the pseudo-terminal slave associated with
    the master FD is open on, or NULL on errors.  */
-# if !@HAVE_PTSNAME@
+# if @REPLACE_PTSNAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPCE)
+#   undef ptsname
+#   define ptsname rpl_ptsname
+#  endif
+_GL_FUNCDECL_RPL (ptsname, char *, (int fd));
+_GL_CXXALIAS_RPL (ptsname, char *, (int fd));
+# else
+#  if !@HAVE_PTSNAME@
 _GL_FUNCDECL_SYS (ptsname, char *, (int fd));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (ptsname, char *, (int fd));
+# endif
 _GL_CXXALIASWARN (ptsname);
 #elif defined GNULIB_POSIXCHECK
 # undef ptsname