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79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* Test that the GET_PC macro is consistent with the unwinder.
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Copyright (C) 2019-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, see <https://www.gnu.org/licenses/>. */
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/* This test searches for the value of the GET_PC macro in the
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addresses obtained from the backtrace function. */
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#include <array_length.h>
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#include <execinfo.h>
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#include <inttypes.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <support/check.h>
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#include <support/xsignal.h>
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#include <sigcontextinfo.h>
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static bool handler_called;
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static void
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handler (int signal, siginfo_t *info, void *ctx)
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{
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TEST_COMPARE (signal, SIGUSR1);
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uintptr_t pc = sigcontext_get_pc (ctx);
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printf ("info: address in signal handler: 0x%" PRIxPTR "\n", pc);
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void *callstack[10];
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int callstack_count = backtrace (callstack, array_length (callstack));
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TEST_VERIFY_EXIT (callstack_count > 0);
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TEST_VERIFY_EXIT (callstack_count <= array_length (callstack));
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bool found = false;
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for (int i = 0; i < callstack_count; ++i)
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{
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const char *marker;
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if ((uintptr_t) callstack[i] == pc)
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{
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found = true;
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marker = " *";
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}
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else
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marker = "";
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printf ("info: call stack entry %d: 0x%" PRIxPTR "%s\n",
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i, (uintptr_t) callstack[i], marker);
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}
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TEST_VERIFY (found);
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handler_called = true;
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}
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static int
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do_test (void)
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{
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struct sigaction sa =
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{
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.sa_sigaction = &handler,
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.sa_flags = SA_SIGINFO
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};
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xsigaction (SIGUSR1, &sa, NULL);
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raise (SIGUSR1);
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TEST_VERIFY (handler_called);
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return 0;
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}
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#include <support/test-driver.c>
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