Re: [csmith-dev] math64 and longlong

[John Regehr <regehr@cs.utah.edu>]

Ok, I think I figured this out.  I couldn't reproduce this behavior 
because on a 32-bit machine this command:

csmith -s 1111004472  --no-math64 --no-longlong

includes this output:

struct S2 {
   int32_t  f0;
};

on a 64-bit machine the same invocation contains this:

struct S2 {
   int64_t  f0;
};

Utah people, what is going on here??  Csmith output must depend only on 
the random seed and other command line options.

John




On 05/04/2011 10:19 AM, John Regehr wrote:
> Hi Lee,
>
> I can't reproduce the behavior you're seeing, can you provide a full
> command line including random seed?
>
> If it is the stuff in safe_math.h that you are seeing -- as opposed to
> code actually generated by Csmith -- then you can suppress it by
> defining the NO_LONGLONG CPP symbol.
>
> John
>
>
>
> On 05/04/2011 09:29 AM, Lee Taylor wrote:
> > Hello,
> >
> > I'm investigating the use of csmith for testing an embedded compiler
> > that doesn't have any 64 bit support, but I'm running into a little
> > trouble.
> >
> > I've tried adding the "--no-math64" and "--no-longlong" options when
> > running csmith, but the generated output still seems to make heavy use
> > of the int64_t and uint64_t types. Is there some other option that I
> > also need to enable?
> >
> > Thanks in advance for your help.
> >
> > Best regards,
> > Lee