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-rw-r--r--stdlib/tst-setcontext7.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/stdlib/tst-setcontext7.c b/stdlib/tst-setcontext7.c
new file mode 100644
index 0000000000..053819f358
--- /dev/null
+++ b/stdlib/tst-setcontext7.c
@@ -0,0 +1,97 @@
+/* Check 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[5];
+static atomic_int done;
+
+static void
+f1 (void)
+{
+ puts ("start f1");
+ if (!done)
+ {
+ if (getcontext (&ctx[2]) != 0)
+ {
+ printf ("%s: getcontext: %m\n", __FUNCTION__);
+ exit (EXIT_FAILURE);
+ }
+ if (done)
+ {
+ puts ("set context in f1");
+ if (setcontext (&ctx[3]) != 0)
+ {
+ printf ("%s: setcontext: %m\n", __FUNCTION__);
+ exit (EXIT_FAILURE);
+ }
+ }
+ }
+ done++;
+ puts ("swap contexts in f1");
+ if (swapcontext (&ctx[4], &ctx[2]) != 0)
+ {
+ printf ("%s: setcontext: %m\n", __FUNCTION__);
+ exit (EXIT_FAILURE);
+ }
+ puts ("end f1");
+ exit (done == 2 ? EXIT_SUCCESS : EXIT_FAILURE);
+}
+
+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);
+ puts ("swap contexts");
+ if (swapcontext (&ctx[3], &ctx[1]) != 0)
+ {
+ printf ("%s: setcontext: %m\n", __FUNCTION__);
+ exit (EXIT_FAILURE);
+ }
+ if (done != 1)
+ exit (EXIT_FAILURE);
+ done++;
+ puts ("set context");
+ if (setcontext (&ctx[4]) != 0)
+ {
+ printf ("%s: setcontext: %m\n", __FUNCTION__);
+ exit (EXIT_FAILURE);
+ }
+ exit (EXIT_FAILURE);
+}
+
+#include <support/test-driver.c>