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From: john@x.UUCP (John Woods)
Newsgroups: net.lang.c
Subject: Re: setjmp: read the manual(short rerereply)
Message-ID: <222@x.UUCP>
Date: Wed, 24-Oct-84 13:51:37 EST
Article-I.D.: x.222
Posted: Wed Oct 24 13:51:37 1984
Date-Received: Sun, 28-Oct-84 05:58:43 EST
References: <363@tjalk.UUCP>
Organization: Charles River Data Systems, Framingham MA
Lines: 12

The idea of having the compiler recognize setjmp and do something
helpful is interesting.  Our (CRDS) compiler has a similar stunt
which it pulls for our handle/raise routines (similar to setjmp/longjmp,
but uses named conditions; quite a bit more similar to CLU's conditions);
a function which calls handle to handle a condition will have its function-exit
code modified slightly, because the Frame-Pointer in the stack frame is
changed to point to a linked list of handled conditions.  Yes, it is fairly
grotesque, it's a hideous kludge, but it buys us a really powerful facility
at NO extra cost (and if you call before midnight tonight...).
-- 
John Woods, Charles River Data Systems, Framingham MA, (617) 626-1114
...!decvax!frog!john, ...!mit-eddie!jfw, jfw%mit-ccc@MIT-XX.ARPA