https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92008
Akim Demaille <akim.demaille at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |akim.demaille at gmail dot com --- Comment #12 from Akim Demaille <akim.demaille at gmail dot com> --- Hi all, %parse-param was introduced in Bison version 1.875 (2003-01-01). Do you really need to maintain compatibility with even older versions of Bison? What is fairly recent is that PARSE_PARAMS is no longer supported, not the introduction of %parse-param and %lex-param.