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sigaltstack
POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/functions/sigaltstack.html
Gnulib module: —
Portability problems fixed by Gnulib:
Portability problems not fixed by Gnulib:
sigaltstack
doesn’t work on HP-UX 11/IA-64 and OpenBSD
3.6/Sparc64.
ss_sp
member of stack_t
as
the upper bound instead of the lower bound of the alternate stack on
some platforms:
Irix 6.5