From owner-freebsd-bugs  Mon Jul 17 18:20: 7 2000
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Date: Mon, 17 Jul 2000 18:20:04 -0700 (PDT)
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Cc: 
From: Jin Guojun (DSD staff) <jin@george.lbl.gov>
Subject: Re: misc/19994: sscanf() fails on 64-bit operations
Reply-To: Jin Guojun (DSD staff) <jin@george.lbl.gov>
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The following reply was made to PR misc/19994; it has been noted by GNATS.

From: Jin Guojun (DSD staff) <jin@george.lbl.gov>
To: bde@zeta.org.au, j_guojun@lbl.gov
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: misc/19994: sscanf() fails on 64-bit operations
Date: Mon, 17 Jul 2000 18:09:50 -0700 (PDT)

 On Mon, 17 Jul 2000, Bruce Evans <bde@zeta.org.au> wrote:
 
 > > >How-To-Repeat:
 > > 
 > >       main(argc, argv)
 > >       {
 > >       int rev, i = 1;
 > >               if (!strcmp(argv[i], "-r"))     {
 > >                       rev = 1;
 > >                       i++;
 > >               } else  rev = 0;
 > >       {
 > >         int64_t h;
 > >                 rev ? sscanf(argv[i], "%lld", &h) : sscanf(argv[i], "%llx", &h
 > );
 > >                 printf(rev ? "0x%016llX\n": "%lld\n", h);
 > >         }
 > >       }
 > 
 > 64-bit types are unportable.  FreeBSD's scanf only supports reading "quad"
 > types using %qd format.
 > 
 > FreeBSD's scanf also has some overflow handling bugs from misusing strtoq
 > to handle non-quads.
 
 Shall we have "%lld" in FreeBSD to make it portable with other systems?
 
 	-Jin
 


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