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POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/basedefs/signal.h.html
Gnulib module: signal-h
Portability problems fixed by Gnulib:
volatile sig_atomic_t
is rejected by older compilers on some
platforms:
AIX.
sigset_t
is missing on some platforms:
MSVC 9.
sigset_t
is only declared in <sys/types.h> on some platforms:
mingw.
struct sigaction
and siginfo_t
are missing on some
platforms:
mingw, MSVC 9.
struct sigaction
lacks the sa_sigaction
member on some
platforms:
Irix 5.3, Interix 3.5.
pid_t
is not defined on some platforms:
MSVC 9.
SIGPIPE
is not defined on some platforms:
mingw, MSVC 9.
SA_NODEFER
is not defined on some platforms:
Interix 3.5.
SA_RESETHAND
and SA_RESTART
are not defined
on some platforms:
NonStop.
sighandler_t
(a GNU extension) is not defined on most non-glibc
platforms:
Mac OS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, AIX 5.1, HP-UX 11,
IRIX 6.5, OSF/1 5.1, Solaris 11 2011-11, Cygwin, mingw, MSVC 9, Interix 3.5, BeOS.
Portability problems not fixed by Gnulib:
SIGRTMIN
and SIGRTMAX
expand to an expression of type
long
instead of int
on some platforms:
OSF/1 5.1.
SIGBUS
is set to the same value as SIGSEGV
,
rather than being a distinct signal, on some platforms:
Haiku.