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-rw-r--r--lib/signal.in.h50
1 files changed, 37 insertions, 13 deletions
diff --git a/lib/signal.in.h b/lib/signal.in.h
index 2a272cccc..b2111372d 100644
--- a/lib/signal.in.h
+++ b/lib/signal.in.h
@@ -1,6 +1,6 @@
/* A GNU-like <signal.h>.
- Copyright (C) 2006-2017 Free Software Foundation, Inc.
+ Copyright (C) 2006-2021 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
@@ -13,7 +13,7 @@
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
@@ -55,13 +55,13 @@
#ifndef _@GUARD_PREFIX@_SIGNAL_H
#define _@GUARD_PREFIX@_SIGNAL_H
-/* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6, Android
- declare pthread_sigmask in <pthread.h>, not in <signal.h>.
+/* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6, Android,
+ OS/2 kLIBC declare pthread_sigmask in <pthread.h>, not in <signal.h>.
But avoid namespace pollution on glibc systems.*/
#if (@GNULIB_PTHREAD_SIGMASK@ || defined GNULIB_POSIXCHECK) \
&& ((defined __APPLE__ && defined __MACH__) \
|| defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ \
- || defined __sun || defined __ANDROID__) \
+ || defined __sun || defined __ANDROID__ || defined __KLIBC__) \
&& ! defined __GLIBC__
# include <pthread.h>
#endif
@@ -133,18 +133,28 @@ typedef void (*sighandler_t) (int);
# define pthread_sigmask rpl_pthread_sigmask
# endif
_GL_FUNCDECL_RPL (pthread_sigmask, int,
- (int how, const sigset_t *new_mask, sigset_t *old_mask));
+ (int how,
+ const sigset_t *restrict new_mask,
+ sigset_t *restrict old_mask));
_GL_CXXALIAS_RPL (pthread_sigmask, int,
- (int how, const sigset_t *new_mask, sigset_t *old_mask));
+ (int how,
+ const sigset_t *restrict new_mask,
+ sigset_t *restrict old_mask));
# else
-# if !@HAVE_PTHREAD_SIGMASK@
+# if !(@HAVE_PTHREAD_SIGMASK@ || defined pthread_sigmask)
_GL_FUNCDECL_SYS (pthread_sigmask, int,
- (int how, const sigset_t *new_mask, sigset_t *old_mask));
+ (int how,
+ const sigset_t *restrict new_mask,
+ sigset_t *restrict old_mask));
# endif
_GL_CXXALIAS_SYS (pthread_sigmask, int,
- (int how, const sigset_t *new_mask, sigset_t *old_mask));
+ (int how,
+ const sigset_t *restrict new_mask,
+ sigset_t *restrict old_mask));
# endif
+# if __GLIBC__ >= 2
_GL_CXXALIASWARN (pthread_sigmask);
+# endif
#elif defined GNULIB_POSIXCHECK
# undef pthread_sigmask
# if HAVE_RAW_DECL_PTHREAD_SIGMASK
@@ -168,7 +178,9 @@ _GL_FUNCDECL_SYS (raise, int, (int sig));
# endif
_GL_CXXALIAS_SYS (raise, int, (int sig));
# endif
+# if __GLIBC__ >= 2
_GL_CXXALIASWARN (raise);
+# endif
#elif defined GNULIB_POSIXCHECK
# undef raise
/* Assume raise is always declared. */
@@ -200,7 +212,7 @@ typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
/* When also using extern inline, suppress the use of static inline in
standard headers of problematic Apple configurations, as Libc at
least through Libc-825.26 (2013-04-09) mishandles it; see, e.g.,
- <http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html>.
+ <https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html>.
Perhaps Apple will fix this some day. */
#if (defined _GL_EXTERN_INLINE_IN_USE && defined __APPLE__ \
&& (defined __i386__ || defined __x86_64__))
@@ -291,10 +303,14 @@ _GL_CXXALIASWARN (sigpending);
# define SIG_SETMASK 1 /* blocked_set = *set; */
# define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */
_GL_FUNCDECL_SYS (sigprocmask, int,
- (int operation, const sigset_t *set, sigset_t *old_set));
+ (int operation,
+ const sigset_t *restrict set,
+ sigset_t *restrict old_set));
# endif
_GL_CXXALIAS_SYS (sigprocmask, int,
- (int operation, const sigset_t *set, sigset_t *old_set));
+ (int operation,
+ const sigset_t *restrict set,
+ sigset_t *restrict old_set));
_GL_CXXALIASWARN (sigprocmask);
/* Install the handler FUNC for signal SIG, and return the previous
@@ -318,10 +334,18 @@ _GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t,
_GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t,
(int sig, _gl_function_taking_int_returning_void_t func));
# else
+/* On OpenBSD, the declaration of 'signal' may not be present at this point,
+ because it occurs in <sys/signal.h>, not <signal.h> directly. */
+# if defined __OpenBSD__
+_GL_FUNCDECL_SYS (signal, _gl_function_taking_int_returning_void_t,
+ (int sig, _gl_function_taking_int_returning_void_t func));
+# endif
_GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t,
(int sig, _gl_function_taking_int_returning_void_t func));
# endif
+# if __GLIBC__ >= 2
_GL_CXXALIASWARN (signal);
+# endif
# if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
/* Raise signal SIGPIPE. */