Avoid some "gcc -pedantic" warnings.

[gnulib.git] / lib / signal.in.h

diff --git a/lib/signal.in.h b/lib/signal.in.h
index a1c9e6f..fce94f3 100644 (file)
--- a/lib/signal.in.h
+++ b/lib/signal.in.h
@@ -15,6 +15,8 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
+@PRAGMA_SYSTEM_HEADER@
+
 #if defined __need_sig_atomic_t || defined __need_sigset_t
 /* Special invocation convention inside glibc header files.  */
 
@@ -118,9 +120,8 @@ struct siginfo_t
 typedef struct siginfo_t siginfo_t;
 # endif /* !@HAVE_SIGINFO_T@ */
 
-  /* Due to autoconf conventions, we can't tell if HAVE_SIGACTION
-     means we have the type or means we have the function.  We assume
-     that all implementations either have both or neither.  */
+/* We assume that platforms which lack the sigaction() function also lack
+   the 'struct sigaction' type, and vice versa.  */
 
 struct sigaction
 {
@@ -147,7 +148,11 @@ struct sigaction
 extern int sigaction (int, const struct sigaction *restrict,
                       struct sigaction *restrict);
 
-#endif /* !@HAVE_SIGACTION@ */
+#elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+
+# define sa_sigaction sa_handler
+
+#endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */
 
 
 #ifdef __cplusplus