diff options
| -rw-r--r-- | stdlib/Makefile | 1 | ||||
| -rw-r--r-- | stdlib/tst-setcontext10.c | 87 |
2 files changed, 88 insertions, 0 deletions
diff --git a/stdlib/Makefile b/stdlib/Makefile index 0b154e57c5..8c6249aab4 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -234,6 +234,7 @@ tests := \ tst-setcontext7 \ tst-setcontext8 \ tst-setcontext9 \ + tst-setcontext10 \ tst-strfmon_l \ tst-strfrom \ tst-strfrom-locale \ diff --git a/stdlib/tst-setcontext10.c b/stdlib/tst-setcontext10.c new file mode 100644 index 0000000000..2926753cb1 --- /dev/null +++ b/stdlib/tst-setcontext10.c @@ -0,0 +1,87 @@ +/* Check longjmp from user context to main context. + Copyright (C) 2023 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 + <https://www.gnu.org/licenses/>. */ + +#include <stdio.h> +#include <stdlib.h> +#include <setjmp.h> +#include <ucontext.h> +#include <unistd.h> + +static jmp_buf jmpbuf; +static ucontext_t ctx; + +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) != 0) + { + printf ("%s: setcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } +} + +static void +f3 (void) +{ + printf ("start f3\n"); + longjmp (jmpbuf, 1); +} + +static int +__attribute__ ((noinline, noclone)) +do_test_1 (void) +{ + char st1[32768]; + + if (setjmp (jmpbuf) != 0) + return 0; + + puts ("making contexts"); + if (getcontext (&ctx) != 0) + { + printf ("%s: getcontext: %m\n", __FUNCTION__); + exit (EXIT_FAILURE); + } + ctx.uc_stack.ss_sp = st1; + ctx.uc_stack.ss_size = sizeof st1; + ctx.uc_link = NULL; + makecontext (&ctx, (void (*) (void)) f3, 0); + f1 (); + puts ("FAIL: returned from f1 ()"); + exit (EXIT_FAILURE); +} + +static int +do_test (void) +{ + return do_test_1 (); +} + +#include <support/test-driver.c> |