@section @code{sigaction}
@findex sigaction
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/sigaction.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/sigaction.html}
Gnulib module: sigaction
@itemize
@item
This function is missing on some platforms:
-mingw.
+mingw, MSVC 9.
@end itemize
Portability problems not fixed by Gnulib:
@item
Support for SA_ONSTACK is missing on some platforms:
-mingw, cygwin.
+mingw, MSVC 9, cygwin.
@item
Support for SA_SIGINFO is missing on some platforms:
-mingw, Interix 3.5.
+mingw, MSVC 9, Interix 3.5.
@item
Support for SIGCHLD, and thus for SA_NOCLDSTOP and SA_NOCLDWAIT, is
missing on some platforms:
-mingw.
+mingw, MSVC 9.
+
+@item
+Support for SA_RESETHAND is missing on some platforms:
+NonStop.
@item
Support for SA_RESTART is missing on some platforms:
-mingw.
+mingw, MSVC 9, NonStop.
+
+@item
+In spite of having SA_SIGACTION, struct sigaction lacks the
+sa_sigaction member on some platforms:
+Irix 5.3.
@item
The symbolic value @code{SIG_IGN} for the @code{SIGCHLD} signal is equivalent