From 375a484459efcf2da1100e9ed228863be6665986 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Wed, 25 Jul 2018 05:12:59 -0700
Subject: Add tests for setcontext on the context from makecontext

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

	* stdlib/Makefile ((tests): Add tst-setcontext6, tst-setcontext7,
	tst-setcontext8 and tst-setcontext9.
	* stdlib/tst-setcontext6.c: New file.
	* stdlib/tst-setcontext7.c: Likewise.
	* stdlib/tst-setcontext8.c: Likewise.
	* stdlib/tst-setcontext9.c: Likewise.
---
 stdlib/tst-setcontext8.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 stdlib/tst-setcontext8.c

(limited to 'stdlib/tst-setcontext8.c')

diff --git a/stdlib/tst-setcontext8.c b/stdlib/tst-setcontext8.c
new file mode 100644
index 0000000000..53fb2bc1dd
--- /dev/null
+++ b/stdlib/tst-setcontext8.c
@@ -0,0 +1,82 @@
+/* Check getcontext and setcontext on the context from makecontext.
+   Copyright (C) 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 <stdio.h>
+#include <stdlib.h>
+#include <ucontext.h>
+#include <unistd.h>
+#include <stdatomic.h>
+
+static ucontext_t ctx[3];
+static atomic_int done;
+
+static void
+__attribute__((noinline, noclone))
+f2 (void)
+{
+  printf ("start f2\n");
+  done++;
+  if (setcontext (&ctx[2]) != 0)
+    {
+      printf ("%s: setcontext: %m\n", __FUNCTION__);
+      exit (EXIT_FAILURE);
+    }
+}
+
+static void
+f1 (void)
+{
+  printf ("start f1\n");
+  if (getcontext (&ctx[2]) != 0)
+    {
+      printf ("%s: getcontext: %m\n", __FUNCTION__);
+      exit (EXIT_FAILURE);
+    }
+  if (done)
+    exit (EXIT_SUCCESS);
+  f2 ();
+}
+
+static int
+do_test (void)
+{
+  char st1[32768];
+  puts ("making contexts");
+  if (getcontext (&ctx[0]) != 0)
+    {
+      printf ("%s: getcontext: %m\n", __FUNCTION__);
+      exit (EXIT_FAILURE);
+    }
+  if (getcontext (&ctx[1]) != 0)
+    {
+      printf ("%s: getcontext: %m\n", __FUNCTION__);
+      exit (EXIT_FAILURE);
+    }
+  ctx[1].uc_stack.ss_sp = st1;
+  ctx[1].uc_stack.ss_size = sizeof st1;
+  ctx[1].uc_link = &ctx[0];
+  makecontext (&ctx[1], (void (*) (void)) f1, 0);
+  if (setcontext (&ctx[1]) != 0)
+    {
+      printf ("%s: setcontext: %m\n", __FUNCTION__);
+      exit (EXIT_FAILURE);
+    }
+  exit (EXIT_FAILURE);
+}
+
+#include <support/test-driver.c>
-- 
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