'\" te
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.TH PSIGNAL 3UCB "Oct 30, 2007"
.SH NAME
psignal, sys_siglist \- system signal messages
.SH SYNOPSIS
.LP
.nf
\fB/usr/ucb/cc\fR [ \fIflag\fR ... ] \fIfile\fR ...

\fBvoid\fR \fBpsignal\fR(\fIsig\fR, \fIs\fR)
\fBunsigned\fR \fIsig\fR;
\fBchar *\fR\fIs\fR;
\fBchar *\fR\fIsys_siglist\fR[];
.fi

.SH DESCRIPTION
.sp
.LP
\fBpsignal()\fR produces a short message on the standard error file describing
the indicated signal. First the argument string \fIs\fR is printed, then a
colon, then the name of the signal and a \fBNEWLINE.\fR Most usefully, the
argument string is the name of the program which incurred the signal. The
signal number should be from among those found in \fB<signal.h>\fR.
.sp
.LP
To simplify variant formatting of signal names, the vector of message strings
\fBsys_siglist\fR is provided; the signal number can be used as an index in
this table to get the signal name without the newline. The define \fBNSIG\fR
defined in \fB<signal.h>\fR is the number of messages provided for in the
table; it should be checked because new signals may be added to the system
before they are added to the table.
.SH SEE ALSO
.sp
.LP
\fBperror\fR(3C), \fBsignal\fR(3C)
.SH NOTES
.sp
.LP
Use of these interfaces should be restricted to only applications written on
BSD platforms.  Use of these interfaces with any of the system libraries or in
multi-thread applications is unsupported.