[Bug 1107] New: printf format warnings on 32-bit build (git 20161230) (patch)

bugzilla-daemon at netfilter.org bugzilla-daemon at netfilter.org
Sat Dec 31 00:44:05 CET 2016


            Bug ID: 1107
           Summary: printf format warnings on 32-bit build (git 20161230)
           Product: iptables
           Version: CVS (please indicate timestamp)
          Hardware: i386
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: iptables
          Assignee: netfilter-buglog at lists.netfilter.org
          Reporter: duncan_roe at acslink.net.au

Created attachment 488
  --> https://bugzilla.netfilter.org/attachment.cgi?id=488&action=edit
Fixes warnings as per bug description

This is the well-known %lu with uint64_t again. It does actually result in bad
output: little-endian systems will show value mod 4G and big-endian will show
value / 4G.
The source already addresses this in 2 ways:
1. use %llu and cast to long long unsigned int
2. Use macro PRIu64 from <inttypes.h>
I offer a patch using method 2: using the macro still gets a warning if the
base type is inappropriate but with a cast there can be no warning

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