* lib/gdb.exp (gdb_saved_set_unbuffered_mode_obj): New global.

	(gdb_compile): If target is *-*-cygwin* or *-*-mingw*, and we're
	compiling an executable, link in an object that forces unbuffered
	output.
	* lib/set_unbuffered_mode.c: New file.

1 files changed, 28 insertions, 0 deletions

diff --git a/gdb/testsuite/lib/set_unbuffered_mode.c b/gdb/testsuite/lib/set_unbuffered_mode.c
new file mode 100644
index 0000000..aa91801
--- /dev/null
+++ b/gdb/testsuite/lib/set_unbuffered_mode.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 2008 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Force outputs to unbuffered mode.  */
+
+#include <stdio.h>
+
+static int __gdb_set_unbuffered_output (void) __attribute__ ((constructor));
+static int
+__gdb_set_unbuffered_output (void)
+{
+  setvbuf (stdout, NULL, _IONBF, BUFSIZ);
+  setvbuf (stderr, NULL, _IONBF, BUFSIZ);
+}