[Python-checkins] bpo-33332: Add signal.valid_signals() (GH-6581)
Antoine Pitrou
webhook-mailer at python.org
Fri May 4 07:01:03 EDT 2018
https://github.com/python/cpython/commit/9d3627e311211a1b4abcda29c36fe4afe2c46532
commit: 9d3627e311211a1b4abcda29c36fe4afe2c46532
branch: master
author: Antoine Pitrou <pitrou at free.fr>
committer: GitHub <noreply at github.com>
date: 2018-05-04T13:00:50+02:00
summary:
bpo-33332: Add signal.valid_signals() (GH-6581)
files:
A Misc/NEWS.d/next/Library/2018-04-23-21-41-30.bpo-33332.Y6OZ8Z.rst
M Doc/library/signal.rst
M Lib/asyncio/unix_events.py
M Lib/multiprocessing/resource_sharer.py
M Lib/signal.py
M Lib/test/support/__init__.py
M Lib/test/test_asyncio/test_unix_events.py
M Lib/test/test_signal.py
M Modules/clinic/signalmodule.c.h
M Modules/signalmodule.c
M aclocal.m4
M configure
M configure.ac
M pyconfig.h.in
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
index 3f17e08f0f95..67ee979dc0e0 100644
--- a/Doc/library/signal.rst
+++ b/Doc/library/signal.rst
@@ -216,6 +216,15 @@ The :mod:`signal` module defines the following functions:
.. versionadded:: 3.8
+.. function:: valid_signals()
+
+ Return the set of valid signal numbers on this platform. This can be
+ less than ``range(1, NSIG)`` if some signals are reserved by the system
+ for internal use.
+
+ .. versionadded:: 3.8
+
+
.. function:: pause()
Cause the process to sleep until a signal is received; the appropriate handler
@@ -268,8 +277,8 @@ The :mod:`signal` module defines the following functions:
argument.
*mask* is a set of signal numbers (e.g. {:const:`signal.SIGINT`,
- :const:`signal.SIGTERM`}). Use ``range(1, signal.NSIG)`` for a full mask
- including all signals.
+ :const:`signal.SIGTERM`}). Use :func:`~signal.valid_signals` for a full
+ mask including all signals.
For example, ``signal.pthread_sigmask(signal.SIG_BLOCK, [])`` reads the
signal mask of the calling thread.
diff --git a/Lib/asyncio/unix_events.py b/Lib/asyncio/unix_events.py
index 6cac137cacb3..f64037a25c67 100644
--- a/Lib/asyncio/unix_events.py
+++ b/Lib/asyncio/unix_events.py
@@ -167,8 +167,8 @@ def _check_signal(self, sig):
if not isinstance(sig, int):
raise TypeError(f'sig must be an int, not {sig!r}')
- if not (1 <= sig < signal.NSIG):
- raise ValueError(f'sig {sig} out of range(1, {signal.NSIG})')
+ if sig not in signal.valid_signals():
+ raise ValueError(f'invalid signal number {sig}')
def _make_read_pipe_transport(self, pipe, protocol, waiter=None,
extra=None):
diff --git a/Lib/multiprocessing/resource_sharer.py b/Lib/multiprocessing/resource_sharer.py
index 6d99da102ffc..730b2aa17bdf 100644
--- a/Lib/multiprocessing/resource_sharer.py
+++ b/Lib/multiprocessing/resource_sharer.py
@@ -136,7 +136,7 @@ def _start(self):
def _serve(self):
if hasattr(signal, 'pthread_sigmask'):
- signal.pthread_sigmask(signal.SIG_BLOCK, range(1, signal.NSIG))
+ signal.pthread_sigmask(signal.SIG_BLOCK, signal.valid_signals())
while 1:
try:
with self._listener.accept() as conn:
diff --git a/Lib/signal.py b/Lib/signal.py
index 9f05c9198df7..826b62cf596c 100644
--- a/Lib/signal.py
+++ b/Lib/signal.py
@@ -65,8 +65,7 @@ def pthread_sigmask(how, mask):
if 'sigpending' in _globals:
@_wraps(_signal.sigpending)
def sigpending():
- sigs = _signal.sigpending()
- return set(_int_to_enum(x, Signals) for x in sigs)
+ return {_int_to_enum(x, Signals) for x in _signal.sigpending()}
if 'sigwait' in _globals:
@@ -76,4 +75,11 @@ def sigwait(sigset):
return _int_to_enum(retsig, Signals)
sigwait.__doc__ = _signal.sigwait
+
+if 'valid_signals' in _globals:
+ @_wraps(_signal.valid_signals)
+ def valid_signals():
+ return {_int_to_enum(x, Signals) for x in _signal.valid_signals()}
+
+
del _globals, _wraps
diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index a5f86d4c4176..f1c4c952eff3 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -2810,7 +2810,7 @@ class SaveSignals:
def __init__(self):
import signal
self.signal = signal
- self.signals = list(range(1, signal.NSIG))
+ self.signals = signal.valid_signals()
# SIGKILL and SIGSTOP signals cannot be ignored nor caught
for signame in ('SIGKILL', 'SIGSTOP'):
try:
diff --git a/Lib/test/test_asyncio/test_unix_events.py b/Lib/test/test_asyncio/test_unix_events.py
index 104f99593797..a01efedf66d9 100644
--- a/Lib/test/test_asyncio/test_unix_events.py
+++ b/Lib/test/test_asyncio/test_unix_events.py
@@ -69,6 +69,7 @@ def test_handle_signal_cancelled_handler(self):
@mock.patch('asyncio.unix_events.signal')
def test_add_signal_handler_setup_error(self, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
m_signal.set_wakeup_fd.side_effect = ValueError
self.assertRaises(
@@ -96,6 +97,7 @@ def test_add_signal_handler_coroutine_error(self, m_signal):
@mock.patch('asyncio.unix_events.signal')
def test_add_signal_handler(self, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
cb = lambda: True
self.loop.add_signal_handler(signal.SIGHUP, cb)
@@ -106,6 +108,7 @@ def test_add_signal_handler(self, m_signal):
@mock.patch('asyncio.unix_events.signal')
def test_add_signal_handler_install_error(self, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
def set_wakeup_fd(fd):
if fd == -1:
@@ -125,6 +128,7 @@ class Err(OSError):
@mock.patch('asyncio.base_events.logger')
def test_add_signal_handler_install_error2(self, m_logging, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
class Err(OSError):
errno = errno.EINVAL
@@ -145,6 +149,7 @@ class Err(OSError):
errno = errno.EINVAL
m_signal.signal.side_effect = Err
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
self.assertRaises(
RuntimeError,
@@ -156,6 +161,7 @@ class Err(OSError):
@mock.patch('asyncio.unix_events.signal')
def test_remove_signal_handler(self, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
@@ -170,6 +176,7 @@ def test_remove_signal_handler(self, m_signal):
def test_remove_signal_handler_2(self, m_signal):
m_signal.NSIG = signal.NSIG
m_signal.SIGINT = signal.SIGINT
+ m_signal.valid_signals = signal.valid_signals
self.loop.add_signal_handler(signal.SIGINT, lambda: True)
self.loop._signal_handlers[signal.SIGHUP] = object()
@@ -187,6 +194,7 @@ def test_remove_signal_handler_2(self, m_signal):
@mock.patch('asyncio.base_events.logger')
def test_remove_signal_handler_cleanup_error(self, m_logging, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
m_signal.set_wakeup_fd.side_effect = ValueError
@@ -197,6 +205,7 @@ def test_remove_signal_handler_cleanup_error(self, m_logging, m_signal):
@mock.patch('asyncio.unix_events.signal')
def test_remove_signal_handler_error(self, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
m_signal.signal.side_effect = OSError
@@ -207,6 +216,7 @@ def test_remove_signal_handler_error(self, m_signal):
@mock.patch('asyncio.unix_events.signal')
def test_remove_signal_handler_error2(self, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
class Err(OSError):
@@ -219,6 +229,7 @@ class Err(OSError):
@mock.patch('asyncio.unix_events.signal')
def test_close(self, m_signal):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
self.loop.add_signal_handler(signal.SIGCHLD, lambda: True)
@@ -236,6 +247,7 @@ def test_close(self, m_signal):
@mock.patch('asyncio.unix_events.signal')
def test_close_on_finalizing(self, m_signal, m_sys):
m_signal.NSIG = signal.NSIG
+ m_signal.valid_signals = signal.valid_signals
self.loop.add_signal_handler(signal.SIGHUP, lambda: True)
self.assertEqual(len(self.loop._signal_handlers), 1)
diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
index 7635eec148d8..7ce89f61ab3e 100644
--- a/Lib/test/test_signal.py
+++ b/Lib/test/test_signal.py
@@ -67,9 +67,28 @@ def test_interprocess_signal(self):
script = os.path.join(dirname, 'signalinterproctester.py')
assert_python_ok(script)
+ def test_valid_signals(self):
+ s = signal.valid_signals()
+ self.assertIsInstance(s, set)
+ self.assertIn(signal.Signals.SIGINT, s)
+ self.assertIn(signal.Signals.SIGALRM, s)
+ self.assertNotIn(0, s)
+ self.assertNotIn(signal.NSIG, s)
+ self.assertLess(len(s), signal.NSIG)
+
@unittest.skipUnless(sys.platform == "win32", "Windows specific")
class WindowsSignalTests(unittest.TestCase):
+
+ def test_valid_signals(self):
+ s = signal.valid_signals()
+ self.assertIsInstance(s, set)
+ self.assertGreaterEqual(len(s), 6)
+ self.assertIn(signal.Signals.SIGINT, s)
+ self.assertNotIn(0, s)
+ self.assertNotIn(signal.NSIG, s)
+ self.assertLess(len(s), signal.NSIG)
+
def test_issue9324(self):
# Updated for issue #10003, adding SIGBREAK
handler = lambda x, y: None
@@ -922,6 +941,17 @@ def test_pthread_sigmask_arguments(self):
self.assertRaises(TypeError, signal.pthread_sigmask, 1)
self.assertRaises(TypeError, signal.pthread_sigmask, 1, 2, 3)
self.assertRaises(OSError, signal.pthread_sigmask, 1700, [])
+ with self.assertRaises(ValueError):
+ signal.pthread_sigmask(signal.SIG_BLOCK, [signal.NSIG])
+
+ @unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
+ 'need signal.pthread_sigmask()')
+ def test_pthread_sigmask_valid_signals(self):
+ s = signal.pthread_sigmask(signal.SIG_BLOCK, signal.valid_signals())
+ self.addCleanup(signal.pthread_sigmask, signal.SIG_SETMASK, s)
+ # Get current blocked set
+ s = signal.pthread_sigmask(signal.SIG_UNBLOCK, signal.valid_signals())
+ self.assertLessEqual(s, signal.valid_signals())
@unittest.skipUnless(hasattr(signal, 'pthread_sigmask'),
'need signal.pthread_sigmask()')
diff --git a/Misc/NEWS.d/next/Library/2018-04-23-21-41-30.bpo-33332.Y6OZ8Z.rst b/Misc/NEWS.d/next/Library/2018-04-23-21-41-30.bpo-33332.Y6OZ8Z.rst
new file mode 100644
index 000000000000..05dca54d5776
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-04-23-21-41-30.bpo-33332.Y6OZ8Z.rst
@@ -0,0 +1,2 @@
+Add ``signal.valid_signals()`` to expose the POSIX sigfillset()
+functionality.
diff --git a/Modules/clinic/signalmodule.c.h b/Modules/clinic/signalmodule.c.h
index 1c439716c498..eca2da10ad33 100644
--- a/Modules/clinic/signalmodule.c.h
+++ b/Modules/clinic/signalmodule.c.h
@@ -341,6 +341,31 @@ PyDoc_STRVAR(signal_sigwait__doc__,
#endif /* defined(HAVE_SIGWAIT) */
+#if (defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS))
+
+PyDoc_STRVAR(signal_valid_signals__doc__,
+"valid_signals($module, /)\n"
+"--\n"
+"\n"
+"Return a set of valid signal numbers on this platform.\n"
+"\n"
+"The signal numbers returned by this function can be safely passed to\n"
+"functions like `pthread_sigmask`.");
+
+#define SIGNAL_VALID_SIGNALS_METHODDEF \
+ {"valid_signals", (PyCFunction)signal_valid_signals, METH_NOARGS, signal_valid_signals__doc__},
+
+static PyObject *
+signal_valid_signals_impl(PyObject *module);
+
+static PyObject *
+signal_valid_signals(PyObject *module, PyObject *Py_UNUSED(ignored))
+{
+ return signal_valid_signals_impl(module);
+}
+
+#endif /* (defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS)) */
+
#if defined(HAVE_SIGWAITINFO)
PyDoc_STRVAR(signal_sigwaitinfo__doc__,
@@ -459,6 +484,10 @@ signal_pthread_kill(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
#define SIGNAL_SIGWAIT_METHODDEF
#endif /* !defined(SIGNAL_SIGWAIT_METHODDEF) */
+#ifndef SIGNAL_VALID_SIGNALS_METHODDEF
+ #define SIGNAL_VALID_SIGNALS_METHODDEF
+#endif /* !defined(SIGNAL_VALID_SIGNALS_METHODDEF) */
+
#ifndef SIGNAL_SIGWAITINFO_METHODDEF
#define SIGNAL_SIGWAITINFO_METHODDEF
#endif /* !defined(SIGNAL_SIGWAITINFO_METHODDEF) */
@@ -470,4 +499,4 @@ signal_pthread_kill(PyObject *module, PyObject *const *args, Py_ssize_t nargs)
#ifndef SIGNAL_PTHREAD_KILL_METHODDEF
#define SIGNAL_PTHREAD_KILL_METHODDEF
#endif /* !defined(SIGNAL_PTHREAD_KILL_METHODDEF) */
-/*[clinic end generated code: output=7b41486acf93aa8e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f35d79e0cfee3f1b input=a9049054013a1b77]*/
diff --git a/Modules/signalmodule.c b/Modules/signalmodule.c
index 35fd87e2d1e7..003bbb60e387 100644
--- a/Modules/signalmodule.c
+++ b/Modules/signalmodule.c
@@ -841,11 +841,21 @@ iterable_to_sigset(PyObject *iterable, sigset_t *mask)
if (signum == -1 && PyErr_Occurred())
goto error;
if (0 < signum && signum < NSIG) {
- /* bpo-33329: ignore sigaddset() return value as it can fail
- * for some reserved signals, but we want the `range(1, NSIG)`
- * idiom to allow selecting all valid signals.
- */
- (void) sigaddset(mask, (int)signum);
+ if (sigaddset(mask, (int)signum)) {
+ if (errno != EINVAL) {
+ /* Probably impossible */
+ PyErr_SetFromErrno(PyExc_OSError);
+ goto error;
+ }
+ /* For backwards compatibility, allow idioms such as
+ * `range(1, NSIG)` but warn about invalid signal numbers
+ */
+ const char *msg =
+ "invalid signal number %ld, please use valid_signals()";
+ if (PyErr_WarnFormat(PyExc_RuntimeWarning, 1, msg, signum)) {
+ goto error;
+ }
+ }
}
else {
PyErr_Format(PyExc_ValueError,
@@ -1001,6 +1011,47 @@ signal_sigwait(PyObject *module, PyObject *sigset)
#endif /* #ifdef HAVE_SIGWAIT */
+#if defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS)
+
+/*[clinic input]
+signal.valid_signals
+
+Return a set of valid signal numbers on this platform.
+
+The signal numbers returned by this function can be safely passed to
+functions like `pthread_sigmask`.
+[clinic start generated code]*/
+
+static PyObject *
+signal_valid_signals_impl(PyObject *module)
+/*[clinic end generated code: output=1609cffbcfcf1314 input=86a3717ff25288f2]*/
+{
+#ifdef MS_WINDOWS
+#ifdef SIGBREAK
+ PyObject *tup = Py_BuildValue("(iiiiiii)", SIGABRT, SIGBREAK, SIGFPE,
+ SIGILL, SIGINT, SIGSEGV, SIGTERM);
+#else
+ PyObject *tup = Py_BuildValue("(iiiiii)", SIGABRT, SIGFPE, SIGILL,
+ SIGINT, SIGSEGV, SIGTERM);
+#endif
+ if (tup == NULL) {
+ return NULL;
+ }
+ PyObject *set = PySet_New(tup);
+ Py_DECREF(tup);
+ return set;
+#else
+ sigset_t mask;
+ if (sigemptyset(&mask) || sigfillset(&mask)) {
+ return PyErr_SetFromErrno(PyExc_OSError);
+ }
+ return sigset_to_set(mask);
+#endif
+}
+
+#endif /* #if defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS) */
+
+
#if defined(HAVE_SIGWAITINFO) || defined(HAVE_SIGTIMEDWAIT)
static int initialized;
static PyStructSequence_Field struct_siginfo_fields[] = {
@@ -1225,6 +1276,9 @@ static PyMethodDef signal_methods[] = {
SIGNAL_SIGWAIT_METHODDEF
SIGNAL_SIGWAITINFO_METHODDEF
SIGNAL_SIGTIMEDWAIT_METHODDEF
+#if defined(HAVE_SIGFILLSET) || defined(MS_WINDOWS)
+ SIGNAL_VALID_SIGNALS_METHODDEF
+#endif
{NULL, NULL} /* sentinel */
};
diff --git a/aclocal.m4 b/aclocal.m4
index 8ed232fb515f..69205776ed4c 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,6 +1,6 @@
-# generated automatically by aclocal 1.15.1 -*- Autoconf -*-
+# generated automatically by aclocal 1.15 -*- Autoconf -*-
-# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+# Copyright (C) 1996-2014 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
@@ -12,9 +12,9 @@
# PARTICULAR PURPOSE.
m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
-# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
-# serial 12 (pkg-config-0.29.2)
-
+dnl pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
+dnl serial 11 (pkg-config-0.29.1)
+dnl
dnl Copyright © 2004 Scott James Remnant <scott at netsplit.com>.
dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists at gmail.com>
dnl
@@ -55,7 +55,7 @@ dnl
dnl See the "Since" comment for each macro you use to see what version
dnl of the macros you require.
m4_defun([PKG_PREREQ],
-[m4_define([PKG_MACROS_VERSION], [0.29.2])
+[m4_define([PKG_MACROS_VERSION], [0.29.1])
m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
[m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
])dnl PKG_PREREQ
@@ -156,7 +156,7 @@ AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
pkg_failed=no
-AC_MSG_CHECKING([for $2])
+AC_MSG_CHECKING([for $1])
_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
_PKG_CONFIG([$1][_LIBS], [libs], [$2])
@@ -166,11 +166,11 @@ and $1[]_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.])
if test $pkg_failed = yes; then
- AC_MSG_RESULT([no])
+ AC_MSG_RESULT([no])
_PKG_SHORT_ERRORS_SUPPORTED
if test $_pkg_short_errors_supported = yes; then
$1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
- else
+ else
$1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
fi
# Put the nasty error message in config.log where it belongs
@@ -187,7 +187,7 @@ installed software in a non-standard prefix.
_PKG_TEXT])[]dnl
])
elif test $pkg_failed = untried; then
- AC_MSG_RESULT([no])
+ AC_MSG_RESULT([no])
m4_default([$4], [AC_MSG_FAILURE(
[The pkg-config script could not be found or is too old. Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
diff --git a/configure b/configure
index 673cfbd3cf62..adf8cf3ab9c1 100755
--- a/configure
+++ b/configure
@@ -11259,7 +11259,7 @@ for ac_func in alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \
sched_get_priority_max sched_setaffinity sched_setscheduler sched_setparam \
sched_rr_get_interval \
- sigaction sigaltstack siginterrupt sigpending sigrelse \
+ sigaction sigaltstack sigfillset siginterrupt sigpending sigrelse \
sigtimedwait sigwait sigwaitinfo snprintf strftime strlcpy symlinkat sync \
sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
truncate uname unlinkat unsetenv utimensat utimes waitid waitpid wait3 wait4 \
diff --git a/configure.ac b/configure.ac
index 419bc34eab76..b52247356d75 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3474,7 +3474,7 @@ AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \
sched_get_priority_max sched_setaffinity sched_setscheduler sched_setparam \
sched_rr_get_interval \
- sigaction sigaltstack siginterrupt sigpending sigrelse \
+ sigaction sigaltstack sigfillset siginterrupt sigpending sigrelse \
sigtimedwait sigwait sigwaitinfo snprintf strftime strlcpy symlinkat sync \
sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
truncate uname unlinkat unsetenv utimensat utimes waitid waitpid wait3 wait4 \
diff --git a/pyconfig.h.in b/pyconfig.h.in
index a0efff9777d2..848872a7dca3 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -896,6 +896,9 @@
/* Define to 1 if you have the `sigaltstack' function. */
#undef HAVE_SIGALTSTACK
+/* Define to 1 if you have the `sigfillset' function. */
+#undef HAVE_SIGFILLSET
+
/* Define to 1 if `si_band' is a member of `siginfo_t'. */
#undef HAVE_SIGINFO_T_SI_BAND
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