On Mon, Feb 15, 2016 at 04:46:32PM +0100, Dan Horák wrote:
> On Mon, 15 Feb 2016 09:35:03 -0600
> Richard Shaw <hobbes1069@xxxxxxxxx> wrote:
>
> > On Mon, Feb 15, 2016 at 8:50 AM, Dan Horák <dan@xxxxxxxx> wrote:
> >
> > > On Mon, 15 Feb 2016 08:34:31 -0600
> > > Richard Shaw <hobbes1069@xxxxxxxxx> wrote:
> > >
> > > > Can someone point me in the right direction? My package
> > > > openCOLLADA is FTBFS in rawhide with the following (repeating)
> > > > error:
> > > >
> > > >
> > > /builddir/build/BUILD/OpenCOLLADA-3335ac164e68b2512a40914b14c74db260e6ff7d/COLLADABaseUtils/src/COLLADABUURI.cpp:57:2:
> > > > error: narrowing conversion of '-1' from 'int' to 'char' inside
> > > > { } [-Wnarrowing]
> > > > };
> > >
> > > isn't it on ARM? Then you should use explicit "signed char" as char
> > > is unsigned by default on ARM (and other arches), see eg.
> > > http://blog.cdleary.com/2012/11/arm-chars-are-unsigned-by-default/
> >
> >
> > Thanks Dan, that got it, adding an explicit signed fixed the build.
>
> you are welcome, there will be more packages suffering from the same
> problem (I own at least one :-)), sometimes appending "-fsigned-char"
> to CFLAGS will be easier.
Note that -fsigned-char changes the ABI, so it might have various
undesirable effects too.
Jakub
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