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Bison 1.31 is released
From: |
Akim Demaille |
Subject: |
Bison 1.31 is released |
Date: |
15 Jan 2002 16:42:42 +0100 |
User-agent: |
Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Common Lisp) |
The following message is a courtesy copy of an article
that has been posted to comp.compilers,gnu.announce,gnu.utils.bug as well.
It finally came out!
We are very happy to announce Bison 1.31, the GNU Yacc clone, which
includes very significant bug fixes: we _strongly_ encourage everyone
to upgrade.
This release would never have existed without the following people:
Robert Anisko, Marc Autret, Pascal Bart (who worked on Bison as part
of their scholarship at EPITA), Paul Eggert (who imported his
expertise on standards, portability, and 64 bit issues), and all our
beta testers (especially the tireless H. Merijn Brand).
Enjoy!
ftp://ftp.gnu.org/gnu/bison/bison-1.31.tar.gz (701 kB)
ftp://ftp.gnu.org/gnu/bison/bison-1.31.tar.bz2 (573 kB)
And here are xdelta-style diffs
ftp://ftp.gnu.org/gnu/bison/bison-1.30-1.31.xdelta (158 kB)
Here are the MD5 and SHA1 signatures for the compressed tar files:
bda25569be8e2ab168b5342d21eb70c0 bison-1.31.tar.gz
b518b82de104cef26830d4bac7af459e bison-1.31.tar.bz2
35f1dc152bbff671583156a270f3eb29b0370a56 bison-1.31.tar.gz
b5f498cb19e94126e36d273bb014e3e36d1495ee bison-1.31.tar.bz2
Bison News
----------
Changes in version 1.31, 2002-01-14:
* Many Bug Fixes
* Use of alloca in parsers
If YYSTACK_USE_ALLOCA is defined to 0, then the parsers will use
malloc exclusively. Since 1.29, but was not NEWS'ed.
alloca is used only when compiled with GCC, to avoid portability
problems as on AIX.
* When the generated parser lacks debugging code, YYDEBUG is now 0
(as POSIX requires) instead of being undefined.
* User Actions
Bison has always permitted actions such as { $$ = $1 }: it adds the
ending semicolon. Now if in Yacc compatibility mode, the semicolon
is no longer output: one has to write { $$ = $1; }.
* Better C++ compliance
The output parsers try to respect C++ namespaces.
* Reduced Grammars
Fixed bugs when reporting useless nonterminals.
* 64 bit hosts
The parsers work properly on 64 bit hosts.
* Error messages
Some calls to strerror resulted in scrambled or missing error messages.
* %expect
When the number of shift/reduce conflicts is correct, don't issue
any warning.
* The verbose report includes the rule line numbers.
* Rule line numbers are fixed in traces.
* Swedish translation
* Parse errors
Verbose parse error messages from the parsers are better looking.
Before: parse error: unexpected `'/'', expecting `"number"' or `'-'' or `'(''
Now: parse error: unexpected '/', expecting "number" or '-' or '('
* Fixed parser memory leaks.
When the generated parser was using malloc to extend its stacks, the
previous allocations were not freed.
* Fixed verbose output file.
Some newlines were missing.
Some conflicts in state descriptions were missing.
* Fixed conflict report.
Option -v was needed to get the result.
* %expect
Was not used.
Mismatches are errors, not warnings.
* Fixed incorrect processing of some invalid input.
* Fixed CPP guards: 9foo.h uses BISON_9FOO_H instead of 9FOO_H.
* Fixed some typos in the documentation.
* %token MY_EOF 0 is supported.
Before, MY_EOF was silently renumbered as 257.
* doc/refcard.tex is updated.
* %output, %file-prefix, %name-prefix.
New.
* --output
New, aliasing `--output-file'.
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