Le 26 nov. 2012 à 13:04, Dennis Yurichev <dennis_mailing_li...@conus.info> a écrit :
> Hi. > > I'm trying to compile simple expr.y file from NetBSD source tree and when I > use bison (GNU Bison) 2.4.2, I'm getting these errors: > > expr.y:75.14: syntax error, unexpected = > expr.y:82.29: syntax error, unexpected = > > What's wrong with the file, how it should be fixed? > > The file can be downloaded at: > http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/bin/expr/expr.y?rev=1.38&content-type=text/plain&only_with_tag=MAIN Hi, The original Yacc accepted an optional '=' before the actions: exp: exp '+' exp = { $$ = $1 + $3; } Bison no longer supports this `=', write this: exp: exp '+' exp { $$ = $1 + $3; } I don't understand why they stick to the old syntax, I fail to see the point, as Yacc supported perfectly well the latter. Maybe we should suggest to adjust this file? Or would you do it? _______________________________________________ help-bison@gnu.org https://lists.gnu.org/mailman/listinfo/help-bison
