mirror of
https://github.com/bminor/binutils-gdb.git
synced 2025-12-26 01:07:52 +00:00
5fe70629ce
This patch introduces a new macro, INIT_GDB_FILE. This is used to
replace the current "_initialize_" idiom when introducing a per-file
initialization function. That is, rather than write:
void _initialize_something ();
void
_initialize_something ()
{
...
}
... now you would write:
INIT_GDB_FILE (something)
{
...
}
The macro handles both the declaration and definition of the function.
The point of this approach is that it makes it harder to accidentally
cause an initializer to be omitted; see commit 2711e475 ("Ensure
cooked_index_entry self-tests are run"). Specifically, the regexp now
used by make-init-c seems harder to trick.
New in v2: un-did some erroneous changes made by the script.
The bulk of this patch was written by script.
Regression tested on x86-64 Fedora 41.
124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/* Self tests for scoped_ignored_signal for GDB, the GNU debugger.
|
|
|
|
Copyright (C) 2021-2025 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "gdbsupport/scoped_ignore_signal.h"
|
|
#include "gdbsupport/selftest.h"
|
|
#include "gdbsupport/scope-exit.h"
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
|
|
namespace selftests {
|
|
namespace scoped_ignore_sig {
|
|
|
|
#ifdef SIGPIPE
|
|
|
|
/* True if the SIGPIPE handler ran. */
|
|
static volatile sig_atomic_t got_sigpipe = 0;
|
|
|
|
/* SIGPIPE handler for testing. */
|
|
|
|
static void
|
|
handle_sigpipe (int)
|
|
{
|
|
got_sigpipe = 1;
|
|
}
|
|
|
|
/* Test scoped_ignore_sigpipe. */
|
|
|
|
static void
|
|
test_sigpipe ()
|
|
{
|
|
auto *osig = signal (SIGPIPE, handle_sigpipe);
|
|
SCOPE_EXIT { signal (SIGPIPE, osig); };
|
|
|
|
#ifdef HAVE_SIGPROCMASK
|
|
/* Make sure SIGPIPE isn't blocked. */
|
|
sigset_t set, old_state;
|
|
sigemptyset (&set);
|
|
sigaddset (&set, SIGPIPE);
|
|
sigprocmask (SIG_UNBLOCK, &set, &old_state);
|
|
SCOPE_EXIT { sigprocmask (SIG_SETMASK, &old_state, nullptr); };
|
|
#endif
|
|
|
|
/* Create pipe, and close read end so that writes to the pipe fail
|
|
with EPIPE. */
|
|
|
|
int fd[2];
|
|
char c = 0xff;
|
|
int r;
|
|
|
|
r = pipe (fd);
|
|
SELF_CHECK (r == 0);
|
|
|
|
close (fd[0]);
|
|
SCOPE_EXIT { close (fd[1]); };
|
|
|
|
/* Check that writing to the pipe results in EPIPE. EXPECT_SIG
|
|
indicates whether a SIGPIPE signal is expected. */
|
|
auto check_pipe_write = [&] (bool expect_sig)
|
|
{
|
|
got_sigpipe = 0;
|
|
errno = 0;
|
|
|
|
r = write (fd[1], &c, 1);
|
|
SELF_CHECK (r == -1 && errno == EPIPE
|
|
&& got_sigpipe == expect_sig);
|
|
};
|
|
|
|
/* Check that without a scoped_ignore_sigpipe in scope we indeed get
|
|
a SIGPIPE signal. */
|
|
check_pipe_write (true);
|
|
|
|
/* Now check that with a scoped_ignore_sigpipe in scope, SIGPIPE is
|
|
ignored/blocked. */
|
|
{
|
|
scoped_ignore_sigpipe ignore1;
|
|
|
|
check_pipe_write (false);
|
|
|
|
/* Check that scoped_ignore_sigpipe nests correctly. */
|
|
{
|
|
scoped_ignore_sigpipe ignore2;
|
|
|
|
check_pipe_write (false);
|
|
}
|
|
|
|
/* If nesting works correctly, this write results in no
|
|
SIGPIPE. */
|
|
check_pipe_write (false);
|
|
}
|
|
|
|
/* No scoped_ignore_sigpipe is in scope anymore, so this should
|
|
result in a SIGPIPE signal. */
|
|
check_pipe_write (true);
|
|
}
|
|
|
|
#endif /* SIGPIPE */
|
|
|
|
} /* namespace scoped_ignore_sig */
|
|
} /* namespace selftests */
|
|
|
|
INIT_GDB_FILE (scoped_ignore_signal_selftests)
|
|
{
|
|
#ifdef SIGPIPE
|
|
selftests::register_test ("scoped_ignore_sigpipe",
|
|
selftests::scoped_ignore_sig::test_sigpipe);
|
|
#endif
|
|
}
|