diff options
Diffstat (limited to 'stdlib')
| -rw-r--r-- | stdlib/Makefile | 2 | ||||
| -rw-r--r-- | stdlib/tst-setcontext5.c | 88 |
2 files changed, 89 insertions, 1 deletions
diff --git a/stdlib/Makefile b/stdlib/Makefile index e3f2093544..403ca22f49 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -85,7 +85,7 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \ test-at_quick_exit-race test-cxa_atexit-race \ test-on_exit-race test-dlclose-exit-race \ tst-makecontext-align test-bz22786 tst-strtod-nan-sign \ - tst-swapcontext1 tst-setcontext4 + tst-swapcontext1 tst-setcontext4 tst-setcontext5 tests-internal := tst-strtod1i tst-strtod3 tst-strtod4 tst-strtod5i \ tst-tls-atexit tst-tls-atexit-nodelete diff --git a/stdlib/tst-setcontext5.c b/stdlib/tst-setcontext5.c new file mode 100644 index 0000000000..7dcc15cb8e --- /dev/null +++ b/stdlib/tst-setcontext5.c @@ -0,0 +1,88 @@ +/* Check multiple setcontext calls. + 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> + +static ucontext_t ctx[2]; +static volatile int done; + +static void f2 (void); + +static void +__attribute__ ((noinline, noclone)) +f1 (void) +{ + printf ("start f1\n"); + f2 (); +} + +static void +__attribute__ ((noinline, noclone)) +f2 (void) +{ + printf ("start f2\n"); + if (setcontext (&ctx[1]) != 0) + { + printf ("%s: setcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } +} + +static void +f3 (void) +{ + printf ("start f3\n"); + if (done) + exit (EXIT_SUCCESS); + done = 1; + if (setcontext (&ctx[0]) != 0) + { + printf ("%s: setcontext: %m\n", __FUNCTION__); + exit (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)) f3, 0); + f1 (); + puts ("FAIL: returned from f1 ()"); + exit (EXIT_FAILURE); +} + +#include <support/test-driver.c> |