| .TH SYSFATAL 3 | |
| .SH NAME | |
| sysfatal \- system error messages | |
| .SH SYNOPSIS | |
| .B #include <u.h> | |
| .br | |
| .B #include <libc.h> | |
| .PP | |
| .B | |
| void sysfatal(char *fmt, ...) | |
| .SH DESCRIPTION | |
| .I Sysfatal | |
| prints to standard error the name of the running program, | |
| a colon and a space, | |
| the message described by the | |
| .IR print (3) | |
| format string | |
| .I fmt | |
| and subsequent arguments, and a newline. | |
| It then calls | |
| .IR exits (3) | |
| with the formatted message as argument. | |
| The program's name is the value of | |
| .BR argv0 , | |
| which will be set if the program uses the | |
| .IR arg (3) | |
| interface to process its arguments. | |
| If | |
| .B argv0 | |
| is null, it is ignored and the following colon and space are suppressed. | |
| .SH SOURCE | |
| .B \*9/src/lib9/sysfatal.c | |
| .SH "SEE ALSO" | |
| .IR intro (3), | |
| .IR errstr (3), | |
| the | |
| .B %r | |
| format in | |
| .IR print (3) |