On Feb 19, 2018, at 12:26 AM, Jungle Boogie <jungleboogie0@xxxxxxxxx> wrote:
> I can't build wireshark from master src because of this:
> CC toshiba.lo
> CC visual.lo
> CC vms.lo
> CC vwr.lo
> CC wtap.lo
> CC wtap_opttypes.lo
> CC ascend.lo
> ascend.c: In function 'ascendparse':
> ascend.c:38:20: error: declaration of 'ascendlval' shadows a global declaration [-Werror=shadow]
> #define yylval ascendlval
> ^
> ascend.c:670:14: note: in expansion of macro 'yylval'
> YYSTYPE yylval;
> ^
> In file included from ./ascend.y:150:0:
> ascend.h:25:16: note: shadowed declaration is here
> extern YYSTYPE ascendlval;
> ^
Was the build done with Bison or Berkeley YACC? Berkeley YACC appears to have a misfeature wherein it generates a global declaration of yylval - or the prefixed equivalent - in the .h file, *even though it was told to generate a reentrant parser which doesn't use a global yylval*.