[PATCH 4.4 50/54] tools/lib/subcmd/pager.c: do not alias select() params

[Greg Kroah-Hartman]

From: Sergey Senozhatsky <sergey.senozhat...@gmail.com>

commit dfbc3c6cb747c074aa2ba0a10bbeea588d6dfda6 upstream.

[ Change applied file from tools/lib/subcmd/pager.c to
  tools/perf/util/pager.c ]

Use a separate fd set for select()-s exception fds param to fix the
following gcc warning:

  pager.c:36:12: error: passing argument 2 to restrict-qualified parameter 
aliases with argument 4 [-Werror=restrict]
    select(1, &in, NULL, &in, NULL);
              ^~~        ~~~

Link: 
http://lkml.kernel.org/r/20180101105626.7168-1-sergey.senozhat...@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
Cc: Arnaldo Carvalho de Melo <a...@redhat.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 tools/perf/util/pager.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/tools/perf/util/pager.c
+++ b/tools/perf/util/pager.c
@@ -16,10 +16,13 @@ static void pager_preexec(void)
         * have real input
         */
        fd_set in;
+       fd_set exception;
 
        FD_ZERO(&in);
+       FD_ZERO(&exception);
        FD_SET(0, &in);
-       select(1, &in, NULL, &in, NULL);
+       FD_SET(0, &exception);
+       select(1, &in, NULL, &exception, NULL);
 
        setenv("LESS", "FRSX", 0);
 }