2008-05-01 Daniel Jacobowitz <dan@codesourcery.com>

	    Pedro Alves  <pedro@codesourcery.com>

	Based on work by Jan Kratochvil <jan.kratochvil@redhat.com> and Jeff
 	Johnston <jjohnstn@redhat.com>.

	* NEWS: Mention attach to stopped process fix.
	* infcmd.c (detach_command, disconnect_command): Discard the thread
	list.
	* infrun.c (handle_inferior_event): Do not ignore non-SIGSTOP while
	attaching.  Use signal_stop_state.
	(signal_stop_state): Check stop_soon.
	* linux-nat.c (kill_lwp): Declare earlier.
	(pid_is_stopped, linux_nat_post_attach_wait): New.
	(lin_lwp_attach_lwp): Use linux_nat_post_attach_wait.  Update
	comments.
	(linux_nat_attach): Use linux_nat_post_attach_wait.
	(detach_callback, linux_nat_detach): Improve handling for signalled
	processes.
	(linux_nat_pid_to_str): Always print out the LWP ID if it differs
	from the process ID.
	* Makefile.in (infcmd.o): Update.

2008-05-01  Jan Kratochvil  <jan.kratochvil@redhat.com>
	    Daniel Jacobowitz  <dan@codesourcery.com>

	* gdb.threads/attach-into-signal.c, gdb.threads/attach-into-signal.exp,
	gdb.threads/attach-stopped.c, gdb.threads/attach-stopped.exp,
	gdb.threads/attachstop-mt.c, gdb.threads/attachstop-mt.exp: New.

1 files changed, 67 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.threads/attach-into-signal.c b/gdb/testsuite/gdb.threads/attach-into-signal.c
new file mode 100644
index 0000000..653d36c
--- /dev/null
+++ b/gdb/testsuite/gdb.threads/attach-into-signal.c
@@ -0,0 +1,67 @@
+/* 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/>.  */
+
+#include <signal.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef USE_THREADS
+#include <pthread.h>
+#endif
+
+void action(int sig, siginfo_t * info, void *uc)
+{
+  raise (SIGALRM);
+}
+
+static void *func (void *arg)
+{
+  struct sigaction act;
+
+  memset (&act, 0, sizeof(struct sigaction));
+  act.sa_sigaction = action;
+  act.sa_flags = SA_RESTART;
+  sigaction (SIGALRM, &act, 0);
+
+  raise (SIGALRM);
+
+  /* We must not get past this point, either in a free standing or debugged
+     state.  */
+
+  abort ();
+  /* NOTREACHED */
+  return NULL;
+}
+
+int main ()
+{
+
+#ifndef USE_THREADS
+
+  func (NULL);
+
+#else
+
+  pthread_t th;
+  pthread_create (&th, NULL, func, NULL);
+  pthread_join (th, NULL);
+
+#endif
+
+  return 0;
+}