On 2011-05-18 23:16, Pawel Jakub Dawidek wrote:
On Wed, May 18, 2011 at 09:06:20PM +0000, Ben Laurie wrote:
Author: benl
Date: Wed May 18 21:06:20 2011
New Revision: 222084
URL: http://svn.freebsd.org/changeset/base/222084
Log:
Fix clang warnings.
Approved by: philip (mentor)
[...]
- fprintf (stderr, " by changing asso_value['%c'] (char #%d) to
%d\n",
+ fprintf (stderr, " by changing asso_value['%c'] (char #%zd) to
%d\n",
*p, p - union_set + 1, asso_values[(unsigned char)(*p)]);
Hmm, both 'p' and 'union_set' are 'char *' and %zd is for ssize_t. It is
a bit strange that it fixes the warning.
If you subtract two pointers, such as in this case, you get a ptrdiff_t.
Strictly, this doesn't have to be exactly the same type as ssize_t, but
in practice it will almost always be.
You can also cast the result to intmax_t, and use %jd, then it will
always be correct, but possibly have some small overhead.
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