Fails to build from source with upcoming gcc-6

[LocutusOfBorg]

Hi, this is the error:

> [ 29%] Building CXX object CMakeFiles/cld2_full.dir/internal/cld_generated_cjk_delta_bi_32.cc.o
> /usr/bin/c++  -Dcld2_full_EXPORTS  -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2  -fPIC  -o CMakeFiles/cld2_full.dir/internal/cld_generated_cjk_delta_bi_32.cc.o -c /<<PKGBUILDDIR>>/internal/cld_generated_cjk_delta_bi_32.cc
> /<<PKGBUILDDIR>>/internal/scoreonescriptspan.cc: In function 'void CLD2::ScoreEntireScriptSpan(const CLD2::LangSpan&, CLD2::ScoringContext*, CLD2::DocTote*, CLD2::ResultChunkVector*)':
> /<<PKGBUILDDIR>>/internal/scoreonescriptspan.cc:1149:5: warning: narrowing conversion of 'score' from 'int' to 'CLD2::uint16 {aka short unsigned int}' inside { } [-Wnarrowing]
>      };
>      ^
>
> /<<PKGBUILDDIR>>/internal/scoreonescriptspan.cc:1149:5: warning: narrowing conversion of 'bytes' from 'int' to 'CLD2::uint16 {aka short unsigned int}' inside { } [-Wnarrowing]
> /<<PKGBUILDDIR>>/internal/scoreonescriptspan.cc:1149:5: warning: narrowing conversion of 'reliability' from 'int' to 'CLD2::uint8 {aka unsigned char}' inside { } [-Wnarrowing]
[snip]
> /<<PKGBUILDDIR>>/internal/scoreonescriptspan.cc:1149:5: warning: narrowing conversion of 'reliability' from 'int' to 'CLD2::uint8 {aka unsigned char}' inside { } [-Wnarrowing]
> /<<PKGBUILDDIR>>/internal/cld_generated_cjk_uni_prop_80.cc:7089:1: error: narrowing conversion of '-14' from 'int' to 'CLD2::uint8 {aka unsigned char}' inside { } [-Wnarrowing]
[snip]
>  };
>  ^
>
conversion of '-30' from 'int' to 'CLD2::uint8 {aka unsigned char}' inside { } [-Wnarrowing]conversion of '-30' from 'int' to 'CLD2::uint8 {aka unsigned char}' inside { } [-Wnarrowing]

of course uint8 can't handle negative numbers, and if you change to int8 you can't handle numbers over 127.

How can I fix it?
thanks

[LocutusOfBorg]

ping @CLD2 :)

[alc-privacore]

Setting std to c++98 works for me.

CPPFLAGS="-std=c++98" ./compile_libs.sh

[LocutusOfBorg]

@alc-privacore while this might be good as a workaround, it doesn't change the fact that the code seems wrong anyway

[LocutusOfBorg]

uploaded in Debian, with credits to you @alc-privacore :)

[pickfire]

This seems to fix the build issue in Arch Linux.