[PATCH] tui: Fix newterm call for older ncurses

[Simon Marchi <simon.marchi@ericsson.com>]

Older versions of ncurses' newterm can't take NULL for their ofp and ifp
parameters. Newer versions can, and they fall back on stdout/stdin if
that is the case.

This patch explicitely passes stdout/stdin to the call to newterm to
avoid segfaulting with older ncurses.

Reference: https://sourceware.org/ml/gdb-patches/2014-11/msg00055.html

gdb/Changelog:

2014-11-04  Simon Marchi  <simon.marchi@ericsson.com>

	* tui/tui.c (tui_enable): Pass pass stdout and stdin to newterm.
---
 gdb/tui/tui.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/tui/tui.c b/gdb/tui/tui.c
index cb85fb0..12ddab3 100644
--- a/gdb/tui/tui.c
+++ b/gdb/tui/tui.c
@@ -424,7 +424,7 @@ tui_enable (void)
       if (!ui_file_isatty (gdb_stdout))
 	error (_("Cannot enable the TUI when output is not a terminal"));
 
-      s = newterm (NULL, NULL, NULL);
+      s = newterm (NULL, stdout, stdin);
       if (s == NULL)
 	{
 	  error (_("Cannot enable the TUI: error opening terminal [TERM=%s]"),
-- 
2.1.1