SIGSTACK(2) NetBSD System Calls Manual SIGSTACK(2)
sigstack -- set and/or get signal stack context
#include <signal.h> int sigstack(const struct sigstack *, struct sigstack *);
The sigstack() function has been deprecated in favor of the interface described in sigaltstack(2).
The sigstack function call appeared in 4.2BSD. NetBSD 8.1 June 4, 1993 NetBSD 8.1
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