...
In file included from /usr/lib/x86_64-linux-gnu/perl/5.24/CORE/perl.h:3905:0,
                 from /home/christian/prj/ai/freeciv/dependencies/freeciv/client/gui-swig/fc_swig_perl_side.h:53,
                 from /home/christian/prj/ai/freeciv/dependencies/freeciv/client/gui-swig/fc_swig_cside.c:36:
/usr/lib/x86_64-linux-gnu/perl/5.24/CORE/inline.h: Dans la fonction « S_cx_popsub_args »:
/usr/lib/x86_64-linux-gnu/perl/5.24/CORE/cop.h:612:13: erreur : declaration of « av » shadows a previous local [-Werror=shadow]
         AV *av = GvAV(PL_defgv);                                        \
             ^
/usr/lib/x86_64-linux-gnu/perl/5.24/CORE/cop.h:612:13: note : in definition of macro « CX_POP_SAVEARRAY »
         AV *av = GvAV(PL_defgv);                                        \
             ^~
In file included from /usr/lib/x86_64-linux-gnu/perl/5.24/CORE/perl.h:5859:0,
                 from /home/christian/prj/ai/freeciv/dependencies/freeciv/client/gui-swig/fc_swig_perl_side.h:53,
                 from /home/christian/prj/ai/freeciv/dependencies/freeciv/client/gui-swig/fc_swig_cside.c:36:
/usr/lib/x86_64-linux-gnu/perl/5.24/CORE/inline.h:518:9: note : shadowed declaration is here
     AV *av;
...