Allow 'interrupt -a' in all-stop mode

PR gdb/17160 points out that "interrupt -a" errors in all-stop mode,
but there's no good reason for this.  This patch removes the error.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=17160

1 files changed, 27 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/interrupt-a.c b/gdb/testsuite/gdb.base/interrupt-a.c
new file mode 100644
index 0000000..2c12df2
--- /dev/null
+++ b/gdb/testsuite/gdb.base/interrupt-a.c
@@ -0,0 +1,27 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2022 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 <unistd.h>
+
+int
+main ()
+{
+  int i;
+
+  for (i = 0; i < 60; ++i)
+    sleep (50);
+}