diff options
Diffstat (limited to 'stdlib/tst-makecontext.c')
-rw-r--r-- | stdlib/tst-makecontext.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/stdlib/tst-makecontext.c b/stdlib/tst-makecontext.c deleted file mode 100644 index d7ffad5f64..0000000000 --- a/stdlib/tst-makecontext.c +++ /dev/null @@ -1,110 +0,0 @@ -/* Copyright (C) 2006-2017 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 <errno.h> -#include <stdlib.h> -#include <stdio.h> -#include <ucontext.h> -#include <assert.h> -#include <unwind.h> -#include <dlfcn.h> -#include <gnu/lib-names.h> - -ucontext_t ucp; -char st1[16384]; -__thread int thr; - -int somevar = -76; -long othervar = -78L; - -struct trace_arg -{ - int cnt, size; -}; - -static _Unwind_Reason_Code -backtrace_helper (struct _Unwind_Context *ctx, void *a) -{ - struct trace_arg *arg = a; - if (++arg->cnt == arg->size) - return _URC_END_OF_STACK; - return _URC_NO_REASON; -} - -void -cf (int i) -{ - struct trace_arg arg = { .size = 100, .cnt = -1 }; - void *handle; - _Unwind_Reason_Code (*unwind_backtrace) (_Unwind_Trace_Fn, void *); - - if (i != othervar || thr != 94) - { - printf ("i %d thr %d\n", i, thr); - exit (1); - } - - /* Test if callback function of _Unwind_Backtrace is not called infinitely - times. See Bug 18508 or gcc bug "Bug 66303 - runtime.Caller() returns - infinitely deep stack frames on s390x.". - The go runtime calls backtrace_full() in - <gcc-src>/libbacktrace/backtrace.c, which uses _Unwind_Backtrace(). */ - handle = dlopen (LIBGCC_S_SO, RTLD_LAZY); - if (handle != NULL) - { - unwind_backtrace = dlsym (handle, "_Unwind_Backtrace"); - if (unwind_backtrace != NULL) - { - unwind_backtrace (backtrace_helper, &arg); - assert (arg.cnt != -1 && arg.cnt < 100); - } - dlclose (handle); - } - - /* Since uc_link below has been set to NULL, setcontext is supposed to - terminate the process normally after this function returns. */ -} - -int -do_test (void) -{ - if (getcontext (&ucp) != 0) - { - if (errno == ENOSYS) - { - puts ("context handling not supported"); - return 0; - } - - puts ("getcontext failed"); - return 1; - } - thr = 94; - ucp.uc_link = NULL; - ucp.uc_stack.ss_sp = st1; - ucp.uc_stack.ss_size = sizeof st1; - makecontext (&ucp, (void (*) (void)) cf, 1, somevar - 2); - if (setcontext (&ucp) != 0) - { - puts ("setcontext failed"); - return 1; - } - return 2; -} - -#define TEST_FUNCTION do_test () -#include "../test-skeleton.c" |