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Document the recent error-recovery fix by Paul Hilfinger.

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Paul Eggert
2002-05-24 12:38:52 +00:00
parent 660bc8dd09
commit 68cd8af38b
1 changed files with 9 additions and 0 deletions
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9
NEWS
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@@ -17,6 +17,15 @@ Changes in version 1.49b:
user specified that one of her tokens is numbered 256, then error
will be mapped onto another number.
* Error recovery now conforms to documentation and to POSIX
When a Bison-generated parser encounters a syntax error, it now pops
the stack until it finds a state that allows shifting the error
token. Formerly, it popped the stack until it found a state that
allowed some non-error action other than a default reduction on the
error token. The new behavior has long been the documented behavior,
and has long been required by POSIX. For more details, please see
<http://mail.gnu.org/pipermail/bug-bison/2002-May/001452.html>.
* Large grammars
Large grammars are now supported (large token numbers, large grammar
size (= sum of the LHS and RHS lengths), large LALR tables).