Function err

#[unsafe(no_mangle)]pub unsafe extern "C" fn err(
    eval: c_int,
    fmt: *const c_char,
    ...
) -> !

Expand description

Print a user message then an error message for ERRNO followed by exiting with eval.

The message format is progname: fmt: strerror(ERRNO)

§Return

Does not return. Exits with eval as an error code.