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program example79;
{ Program to demonstrate the setjmp, longjmp functions }
procedure dojmp(var env : jmp_buf; value : longint);
begin
value:=2;
Writeln ('Going to jump !');
{ This will return to the setjmp call,
and return value instead of 0 }
longjmp(env,value);
end;
var env : jmp_buf;
begin
if setjmp(env)=0 then
begin
writeln ('Passed first time.');
dojmp(env,2);
end
else
writeln ('Passed second time.');
end.
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