How to detect a bad longjmp() in SunOS 4.0/4.1?

[Tim Writer]

Does anyone know a way to detect a bad longjmp()?  By a bad longjmp(), I
mean a longjmp() to a function that has already returned.  I posted this
query to comp.lang.c but it seems that there is no general solution.  I'm
looking for a machine dependent solution now.

Please reply by e-mail since I don't read this newsgroup very often.

Thanks in advance.
Tim