svn commit: r322893 - head/bin/dd

[Matt Joras]

On 08/25/2017 10:17, Conrad Meyer wrote:
> This change seems to break buildworld on MIPS:
>
> /home/cem/head.svn/bin/dd/args.c: In function 'f_bs':
> /home/cem/head.svn/bin/dd/args.c:188: warning: format '%zd' expects
> type 'signed size_t', but argument 3 has type 'long int'
> /home/cem/head.svn/bin/dd/args.c: In function 'f_cbs':
> /home/cem/head.svn/bin/dd/args.c:199: warning: format '%zd' expects
> type 'signed size_t', but argument 3 has type 'long int'
> /home/cem/head.svn/bin/dd/args.c: In function 'f_ibs':
> /home/cem/head.svn/bin/dd/args.c:245: warning: format '%zd' expects
> type 'signed size_t', but argument 3 has type 'long int'
> /home/cem/head.svn/bin/dd/args.c: In function 'f_obs':
> /home/cem/head.svn/bin/dd/args.c:266: warning: format '%zd' expects
> type 'signed size_t', but argument 3 has type 'long int'
>
> (Yes, it's odd that the SSIZE_MAX constant has 'long' type.)
>
SSIZE_MAX should have type long, since ssize_t is a long on mips (and
other arches besides i386 and arm).

Re: the build failure, that's in the GCC C format string checking, so
perhaps it's more accurate to say this breaks the (in-tree) GCC build.
%zd is the right format specifier for ssize_t. I guess GCC's format
string checking is getting confused because SSIZE_MAX is a constant that
expands to type long. Perhaps casting to ssize_t would GCC happier, but
that looks rather wrong.

Matt