sigpending() returns the set of signals that are pending for delivery to the calling
thread (i.e., the signals which have been raised while blocked).
The mask of pending signals is returned in
set.
RETURN VALUE
sigpending() returns 0 on success and -1 on error.
ERRORS
Tag
Description
EFAULT
set points to memory which is not a valid part of the process address space.
NOTES
See
sigsetops(3)
for details on manipulating signal sets.
CONFORMING TO
POSIX.1-2001.
BUGS
In versions of glibc up to and including 2.2.1,
there is a bug in the wrapper function for
sigpending() which means that information about pending real-time signals
is not correctly returned.
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