[Bug c/43991] New: typeof (size_t) inconsistency

[Bug c/43991] New: typeof (size_t) inconsistency

[jimsmite at rocketmail dot com]

size_t is declared as unsigned int on 32-bit and unsigned long on 64-bit.  As a
result, following code will emit a warning on amd-64:

  printf ("%u\n", sizeof (int));
  test.c:5: warning: format ‘%u’ expects type ‘unsigned
int’, but argument 2 has type ‘long unsigned int’

but changing the format would then fail on ia-32:

  printf ("%lu\n", sizeof (int));
  test.c:5: warning: format ‘%lu’ expects type ‘long unsigned
int’, but argument 2 has type ‘unsigned int’

there seems to be no way to satisfy this other than a cast, which seems a bit
awkward.  Is there any reason for size_t not being "unsigned long" consistently
on all platforms?


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           Summary: typeof (size_t) inconsistency
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jimsmite at rocketmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43991

[Bug c/43991] typeof (size_t) inconsistency

[pluto at agmk dot net]

------- Comment #1 from pluto at agmk dot net  2010-05-05 13:01 -------
use %Zd formatter.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43991

[Bug c/43991] typeof (size_t) inconsistency

[redi at gcc dot gnu dot org]

------- Comment #2 from redi at gcc dot gnu dot org  2010-05-05 13:19 -------
%Zd is a GNUism and assumes a signed type (e.g. ssize_t), %zu is ISO C


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redi at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43991

[Bug c/43991] typeof (size_t) inconsistency

[jimsmite at rocketmail dot com]

------- Comment #3 from jimsmite at rocketmail dot com  2010-05-08 19:50 -------
Thanks for the tip


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43991