Both 7.6 and 7.7-comiplations give me this on an up to date Debian unstable:

sed -e 's/YY_COUNT_TYPE/unsigned int/' \ -e 's/YY_FROM_CONST/const/' \ < /pkg/pike/src/Pike/7.6/src/y.tab.c > /pkg/pike/src/Pike/7.6/src/language.c Compiling /pkg/pike/src/Pike/7.6/src/language.c y.tab.c:384: error: two or more data types in declaration of `yyss' y.tab.c:921: error: two or more data types in declaration of `yyr1' y.tab.c:1059: error: two or more data types in declaration of `yydefact' *and so on*