On Mon, 2019-02-25 at 09:58 -0500, Adam Jackson wrote:
On Fri, 2019-02-22 at 19:59 +0000, Sérgio wrote:
> Add -fsigned-char fix the build thanks, I still not understood, why
> only ppc64le and GCC 9
I can't speak to the gcc9 part, but this would probably have failed
on
aarch64 and s390x as well, you just didn't notice because those
aren't
arches in copr.
yes , I could check this on koji , aarch64 and others also failed to
build.
C's "char" type is either signed or unsigned by
default, it's a
function of the processor-specific ABI. It happens to be signed on
i686
and x86_64, and unsigned on all the other arches Fedora supports. So:
> /builddir/build/BUILD/gdcm-
> 2.8.8/Testing/Source/Common/Cxx/TestString2.cxx:29:24: error:
> narrowing conversion of '-1' from 'int' to 'char'
[-Wnarrowing]
This would only trigger on unsigned-char arches, because you can't
represent -1 with an unsigned number.
The key was "can't represent -1 with an unsigned number" , I add some sign
char to the code [1] and it fix the FTBFS
Thanks ,
[1]
https://src.fedoraproject.org/fork/sergiomb/rpms/gdcm/blob/master/f/gdcm-...
- ajax
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Sérgio M. B.