- update to 20210328:
* reader.c: ignore bison's "%empty" extension
* reader.c, defs.h:
%debug was a trivial bison "extension", mark it as such
* yacc.1: use italics in a few places where bold was inappropriate
* reader.c:
add union tag to YYSTYPE structure for compatibility with a feature which
bison copied from Solaris yacc (request by Ella Stanforth)
* closure.c, warshall.c:
fix undefined-behavior diagnosed with gcc -fsanitize=undefined (report by
Alexander Richardson)
OBS-URL: https://build.opensuse.org/request/show/891593
OBS-URL: https://build.opensuse.org/package/show/devel:tools:compiler/byacc?expand=0&rev=38
