NAME

t_error − produce error message

SYNOPSIS

#include <tiuser.h>

void t_error(errmsg)
char ∗errmsg;
extern int t_errno;
extern char ∗t_errlist[];
extern int t_nerr;

DESCRIPTION

t_error produces a message on the standard error output which describes the last error encountered during a call to a transport function.  The argument string errmsg is a user-supplied error message that gives context to the error. 

t_error prints the user-supplied error message followed by a colon and the standard transport function error message for the current value contained in t_errno.  If t_errno is TSYSERR, t_error will also print the standard error message for the current value contained in errno [see intro(2)]. 

t_errlist is the array of message strings, to allow user message formatting.  t_errno can be used as an index into this array to retrieve the error message string (without a terminating newline).  t_nerr is the maximum index value for the t_errlist array. 

t_errno is set when an error occurs and is not cleared on subsequent successful calls. 

EXAMPLE

If a t_connect function fails on transport endpoint fd2 because a bad address was given, the following call might follow the failure:

t_error("t_connect failed on fd2");

The diagnostic message would print as:

t_connect failed on fd2:  Incorrect transport address format

where t_connect failed on fd2 tells the user which function failed on which transport endpoint, and Incorrect transport address format identifies the specific error that occurred. 

SEE ALSO

CX/UX Networking Reference Manual

CX/UX Networking