🚀 go-pugleaf

In article <22DEC199220451474@eql.caltech.edu>, rankin@eql.caltech.edu (Pat Rankin) writes:
>      You call printf() and then longjmp() out of a signal handler and end
> up surprised that there are problems?

If he wants to continue to kludge I can assure that the following code 
(from SIOD) "works" on Alpha. Possibly it may work because of the 
interposed stack frames, but I am also careful to never allow an err_ctrl_c() 
call while already inside other calls to the VAXCRTL, 
hence the nointerrupt flag. (If you cannot be good, at least be careful).

Note that when this code is run on the Macintosh I am forced to use
the polling technique anyway, because of a lack of interrupt capability.

void handle_sigint(int sig SIG_restargs)
{signal(SIGINT,handle_sigint);
 if (nointerrupt == 1) interrupt_differed = 1;
 else err_ctrl_c();}

void err_ctrl_c(void)
{err("control-c interrupt");}

void err(char *message)
{nointerrupt = 1;
 printf("ERROR: %s\n",message);
 longjmp(errjmp,1);}