Message-ID: <3E05BC7B.4040605@earthlink.net>
From: Martin Ambuhl <mambuhl AT earthlink DOT net>
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Newsgroups: comp.os.msdos.djgpp
Subject: Re: dynamic gotos possible with djgpp?
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Date: Sun, 22 Dec 2002 13:22:09 GMT
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Lars O. Hansen wrote:
> void *x;     /* or long *x as addresses are just integers (but may conflict with C type checking) */
> x=label1;    /* label1 a label like a label for static gotos */
> goto x;
> possible?

     Check your documentation.  In the nodes "Local Labels" and "Labels
     as Values" in gcc.  info(under "C Extensions") you will find the
     discussion.Check this code :

#include <stdio.h>
int main(void)
{
     void *x = &&label1;
     goto *x;
   label0:puts("We hit label0, somehow");
     return 0;
   label1:puts("We got to label1, just where we were going!");
     return 0;
   label2:puts("We hit label2, somehow");
     return 0;
}

[output]
We got to label1, just where we were going!