1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/x86/tst-saved_mask-1.c b/sysdeps/unix/sysv/linux/x86/tst-saved_mask-1.c
new file mode 100644
index 0000000000..56e680527c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/x86/tst-saved_mask-1.c
@@ -0,0 +1,55 @@
+/* Test that sigprocmask does not read from the unused part of jmpbuf.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#include <setjmpP.h>
+#include <support/next_to_fault.h>
+
+#define SIZEOF_SIGSET_T sizeof (__jmp_buf_sigset_t)
+
+static int
+do_test (void)
+{
+  sigjmp_buf sj;
+  struct support_next_to_fault sigset_t_buf
+    = support_next_to_fault_allocate (SIZEOF_SIGSET_T);
+  sigset_t *m_p = (sigset_t *) sigset_t_buf.buffer;
+  sigset_t m;
+
+  sigemptyset (&m);
+  memcpy (m_p, &m, SIZEOF_SIGSET_T);
+  sigprocmask (SIG_SETMASK, m_p, NULL);
+  memcpy (&m, m_p, SIZEOF_SIGSET_T);
+  if (sigsetjmp (sj, 0) == 0)
+    {
+      sigaddset (&m, SIGUSR1);
+      memcpy (m_p, &m, SIZEOF_SIGSET_T);
+      sigprocmask (SIG_SETMASK, m_p, NULL);
+      memcpy (&m, m_p, SIZEOF_SIGSET_T);
+      siglongjmp (sj, 1);
+      return EXIT_FAILURE;
+    }
+  sigprocmask (SIG_SETMASK, NULL, m_p);
+  memcpy (&m, m_p, SIZEOF_SIGSET_T);
+  return sigismember (&m, SIGUSR1) ? EXIT_SUCCESS : EXIT_FAILURE;
+}
+
+#include <support/test-driver.c>