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-rw-r--r--libsigsegv/tests/stackoverflow2.c198
1 files changed, 0 insertions, 198 deletions
diff --git a/libsigsegv/tests/stackoverflow2.c b/libsigsegv/tests/stackoverflow2.c
deleted file mode 100644
index 2475bf21..00000000
--- a/libsigsegv/tests/stackoverflow2.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/* Test that stack overflow and SIGSEGV are correctly distinguished.
- Copyright (C) 2002-2006, 2008 Bruno Haible <bruno@clisp.org>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
-
-#ifndef _MSC_VER
-# include <config.h>
-#endif
-
-#include "sigsegv.h"
-#include <stdio.h>
-#include <limits.h>
-
-#if HAVE_STACK_OVERFLOW_RECOVERY && HAVE_SIGSEGV_RECOVERY
-
-#if defined _WIN32 && !defined __CYGWIN__
- /* Windows doesn't have sigset_t. */
- typedef int sigset_t;
-# define sigemptyset(set)
-# define sigprocmask(how,set,oldset)
-#endif
-
-#include "mmaputil.h"
-#include <stddef.h> /* needed for NULL on SunOS4 */
-#include <stdlib.h> /* for abort, exit */
-#include <signal.h>
-#include <setjmp.h>
-#if HAVE_SETRLIMIT
-# include <sys/types.h>
-# include <sys/time.h>
-# include <sys/resource.h>
-#endif
-#ifndef SIGSTKSZ
-# define SIGSTKSZ 16384
-#endif
-
-jmp_buf mainloop;
-sigset_t mainsigset;
-
-volatile int pass = 0;
-unsigned long page;
-
-static void
-stackoverflow_handler_continuation (void *arg1, void *arg2, void *arg3)
-{
- int arg = (int) (long) arg1;
- longjmp (mainloop, arg);
-}
-
-void
-stackoverflow_handler (int emergency, stackoverflow_context_t scp)
-{
- pass++;
- if (pass <= 2)
- printf ("Stack overflow %d caught.\n", pass);
- else
- {
- printf ("Segmentation violation misdetected as stack overflow.\n");
- exit (1);
- }
- sigprocmask (SIG_SETMASK, &mainsigset, NULL);
- sigsegv_leave_handler (stackoverflow_handler_continuation,
- (void *) (long) (emergency ? -1 : pass), NULL, NULL);
-}
-
-int
-sigsegv_handler (void *address, int emergency)
-{
- /* This test is necessary to distinguish stack overflow and SIGSEGV. */
- if (!emergency)
- return 0;
-
- pass++;
- if (pass <= 2)
- {
- printf ("Stack overflow %d missed.\n", pass);
- exit (1);
- }
- else
- printf ("Segmentation violation correctly detected.\n");
- sigprocmask (SIG_SETMASK, &mainsigset, NULL);
- return sigsegv_leave_handler (stackoverflow_handler_continuation,
- (void *) (long) pass, NULL, NULL);
-}
-
-volatile int *
-recurse_1 (int n, volatile int *p)
-{
- if (n < INT_MAX)
- *recurse_1 (n + 1, p) += n;
- return p;
-}
-
-int
-recurse (volatile int n)
-{
- return *recurse_1 (n, &n);
-}
-
-int
-main ()
-{
- /* glibc says: Users should use SIGSTKSZ as the size of user-supplied
- buffers. */
- char mystack[SIGSTKSZ];
- sigset_t emptyset;
- void *p;
-
-#if HAVE_SETRLIMIT && defined RLIMIT_STACK
- /* Before starting the endless recursion, try to be friendly to the user's
- machine. On some Linux 2.2.x systems, there is no stack limit for user
- processes at all. We don't want to kill such systems. */
- struct rlimit rl;
- rl.rlim_cur = rl.rlim_max = 0x100000; /* 1 MB */
- setrlimit (RLIMIT_STACK, &rl);
-#endif
-
- /* Install the stack overflow handler. */
- if (stackoverflow_install_handler (&stackoverflow_handler,
- mystack, sizeof (mystack))
- < 0)
- exit (2);
-
- /* Preparations. */
-#if !HAVE_MMAP_ANON && !HAVE_MMAP_ANONYMOUS && HAVE_MMAP_DEVZERO
- zero_fd = open ("/dev/zero", O_RDONLY, 0644);
-#endif
-
- /* Setup some mmaped memory. */
- p = mmap_zeromap ((void *) 0x12340000, 0x4000);
- if (p == (void *)(-1))
- {
- fprintf (stderr, "mmap_zeromap failed.\n");
- exit (2);
- }
- page = (unsigned long) p;
-
- /* Make it read-only. */
- if (mprotect ((void *) page, 0x4000, PROT_READ) < 0)
- {
- fprintf (stderr, "mprotect failed.\n");
- exit (2);
- }
-
- /* Install the SIGSEGV handler. */
- if (sigsegv_install_handler (&sigsegv_handler) < 0)
- exit (2);
-
- /* Save the current signal mask. */
- sigemptyset (&emptyset);
- sigprocmask (SIG_BLOCK, &emptyset, &mainsigset);
-
- /* Provoke two stack overflows in a row. */
- switch (setjmp (mainloop))
- {
- case -1:
- printf ("emergency exit\n"); exit (1);
- case 0: case 1:
- printf ("Starting recursion pass %d.\n", pass + 1);
- recurse (0);
- printf ("no endless recursion?!\n"); exit (1);
- case 2:
- *(volatile int *) (page + 0x678) = 42;
- break;
- case 3:
- *(volatile int *) 0 = 42;
- break;
- case 4:
- break;
- default:
- abort ();
- }
-
- printf ("Test passed.\n");
- exit (0);
-}
-
-#else
-
-int
-main ()
-{
- return 77;
-}
-
-#endif