Updated: bison 3.8.2

Cygwin bison Co-Maintainer Brian.Inglis@SystematicSW.ab.ca
Sat Sep 25 21:41:08 GMT 2021

The following packages have been upgraded in the Cygwin distribution:

* bison		3.8.2

Bison is a general-purpose parser generator that converts an annotated
context-free grammar into a deterministic LR or generalized LR (GLR)
parser employing LALR(1) parser tables. As an experimental feature,
Bison can also generate IELR(1) or canonical LR(1) parser tables. Once
you are proficient with Bison, you can use it to develop a wide range of
language parsers, from those used in simple desk calculators to complex
programming languages.
Bison is upward compatible with Yacc: all properly-written Yacc grammars
ought to work with Bison with no change. Anyone familiar with Yacc
should be able to use Bison with little trouble. You need to be fluent
in C or C++ programming in order to use Bison. D and Java are also
supported as experimental features.

For more information see the project home pages:


For changes since the previous Cygwin release please see below or read
/usr/share/doc/bison/NEWS after installation; for complete details see:


Noteworthy changes in release 3.8.2 (2021-09-25) [stable]

  Fixed portability issues of bison on Cygwin.

  Improvements in glr2.cc: add support for custom error messages (`%define
  parse.error custom`), allow linking several parsers together.

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