gdb/

2008-06-28  Pedro Alves  <pedro@codesourcery.com>

	* linux-nat.c (enum sigchld_state): New.
	(linux_nat_async_events_state): Renamed from
	linux_nat_async_events_enabled.
	(linux_nat_event_pipe_push, my_waitpid): Adjust.
	(sigchld_default_action): New.
	(lin_lwp_attach_lwp): Adjust.  Call linux_nat_async_events
	unconditionally.
	(linux_nat_create_inferior): Set events state to sigchld_default
	state.
	(linux_nat_resume): Adjust.
	(linux_nat_wait): Call linux_nat_async_events unconditionally.
	(sigchld_handler): Adjust.
	(linux_nat_async_mask): Don't set SIGCHLD actions here.
	(get_pending_events): Adjust.
	(linux_nat_async_events): Rewrite to handle enum sigchld_state
	instead of a boolean.
	(linux_nat_async): Adjust.
	(_initialize_linux_nat): Capture default SIGCHLD action into
	sigchld_default_action.

gdb/testsuite/
2008-06-28  Pedro Alves  <pedro@codesourcery.com>

	* gdb.base/sigchld.c, gdb.base/sigchld.exp: New test.

1 files changed, 37 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/sigchld.c b/gdb/testsuite/gdb.base/sigchld.c
new file mode 100644
index 0000000..7cee041
--- /dev/null
+++ b/gdb/testsuite/gdb.base/sigchld.c
@@ -0,0 +1,37 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2008 Free Software Foundation, Inc.
+
+   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/>.
+*/
+
+/* Check that GDB isn't messing the SIGCHLD mask while creating an
+   inferior.  */
+
+#include <signal.h>
+#include <stdlib.h>
+
+int
+main ()
+{
+  sigset_t mask;
+
+  sigemptyset (&mask);
+  sigprocmask (SIG_BLOCK, NULL, &mask);
+
+  if (!sigismember (&mask, SIGCHLD))
+    return 0; /* good, not blocked */
+  else
+    return 1; /* bad, blocked */
+}