Re: [BUILDROBOT][PATCH] Fix mmix (unused variable)

[Jan-Benedict Glaw <jbglaw at lug-owl dot de>]

On Fri, 2014-07-18 03:10:09 -0400, Hans-Peter Nilsson <hp@bitrange.com> wrote:
> On Fri, 18 Jul 2014, Jan-Benedict Glaw wrote:
> > As a leftover of r210931, an unused variable resulted in:
> >
> >  g++ -c   -g -O2 -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE  -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I. -I../../../gcc/gcc -I../../../gcc/gcc/. -I../../../gcc/gcc/../include -I../../../gcc/gcc/../libcpp/include -I/opt/cfarm/mpc/include  -I../../../gcc/gcc/../libdecnumber -I../../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I../../../gcc/gcc/../libbacktrace    -o mmix.o -MT mmix.o -MMD -MP -MF ./.deps/mmix.TPo ../../../gcc/gcc/config/mmix/mmix.c
> > ../../../gcc/gcc/config/mmix/mmix.c: In function ?int64_t mmix_intval(const_rtx)?:
> > ../../../gcc/gcc/config/mmix/mmix.c:2694:12: error: unused variable ?retval? [-Werror=unused-variable]
> >    uint64_t retval;
> >             ^
> > cc1plus: all warnings being treated as errors
> 
> Weird that I haven't seen this with a host g++ >= 4.7 (4.7.2-2);
> I've certainly built post-r210931 (post-2014-05-26) for example
> r212486, but obviously so, thanks.
> 
> I see the warning in my logs but -Werror wasn't isn't used and I
> didn't pay attention. Did something change more recently re:
> building with -Werror?

This was a build using GCC's ./contrib/config-list.mk to do the build.
It passes --enable-werror-always to top-level `configure', this is
where the -Werror comes from.

MfG, JBG

-- 
      Jan-Benedict Glaw      jbglaw@lug-owl.de              +49-172-7608481
Signature of: 17:45 <@Eimann> Hrm, das E90 hat keinen Lebenszeit Call-Time Counter mehr
the second  : 17:46 <@jbglaw> Eimann: WofÃr braucht man das?
              17:46 <@jbglaw> Eimann: FÃr mich ist an 'nem Handy wichtig, daà ich mein
                              GegeÃber hÃren kann. Und daà mein GegenÃber mich versteht...
              17:47 <@KrisK> jbglaw: was du meinst ist wodka.
              17:47 <@KrisK> jbglaw: es klingelt und man hÃrt stimmen

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