[LispM-Hackers] error handling by abusing macro system

[Paul Fuqua]

    Date: Mon, 9 Apr 2001 23:23:11 -0400
    From: John Morrison <jm@mak.com>
    
    (1) Define a macro that causes the program to complain to stderr,
    shoot itself in the head, and leave its corpse in a core file (hmm. A
    CORpsE file?)

Or how about

void fail(const char *s, ...)
{
    va_list ap;

    va_start(ap, s);
    fprintf(stderr, "Fatal error:  ");
    vfprintf(stderr, s, ap);
    va_end(ap);
    abort();
}

which is part of a set of such notification functions I've carried
around for a while:  note(), warn(), error(), and fail(), for the
different levels.  Notes are suppressed unless "verbose" is on;  errors
throw out to top level using throw() or longjmp(), depending on
environment.

Call it like

  fail("bad dtp %d in foo()\n", datatype);

                              pf