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29 * @(#)abort.c 8.1 (Berkeley) 6/4/93
30 * $FreeBSD: src/lib/libc/stdlib/abort.c,v 1.11 2007/01/09 00:28:09 imp Exp $
33 #include "namespace.h"
38 #include "un-namespace.h"
40 #include "libc_private.h"
48 * POSIX requires we flush stdio buffers on abort.
49 * XXX ISO C requires that abort() be async-signal-safe.
54 sigfillset(&act.sa_mask);
56 * Don't block SIGABRT to give any handler a chance; we ignore
57 * any errors -- ISO C doesn't allow abort to return anyway.
59 sigdelset(&act.sa_mask, SIGABRT);
60 _sigprocmask(SIG_SETMASK, &act.sa_mask, NULL);
64 * If SIGABRT was ignored, or caught and the handler returns, do
65 * it again, only harder.
67 act.sa_handler = SIG_DFL;
69 sigfillset(&act.sa_mask);
70 _sigaction(SIGABRT, &act, NULL);
71 sigdelset(&act.sa_mask, SIGABRT);
72 _sigprocmask(SIG_SETMASK, &act.sa_mask, NULL);