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Joel E. Denny 868d2d9638 Clean up handling of %destructor for the end token (token 0).

Discussed starting at
<http://lists.gnu.org/archive/html/bison-patches/2006-07/msg00019.html>
and
<http://lists.gnu.org/archive/html/help-bison/2006-07/msg00013.html>.

Make the skeletons consistent in how they pop the end token and invoke
its %destructor.
* data/glr.c (yyrecoverSyntaxError, yyparse): Don't pop the start
state, which has token number 0, since this would invoke the
%destructor for the end token.
* data/lalr1.cc (yy::parser::parse): Don't check for the final state
until after shifting the end token, or else it won't be popped.
* data/yacc.c (yyparse): Likewise.

* data/glr.c (yyparse): Clear the lookahead after shifting it even when
it's the end token.  Upon termination, destroy an unshifted lookahead
even when it's the end token.
* data/lalr1.cc (yy::parser::parse): Likewise.
* data/yacc.c (yyparse): Likewise.

* src/reader.c (packgram): Don't check rule 0.  This suppresses unused
value warnings for the end token when the user gives the end token a
%destructor.

* tests/actions.at (Printers and Destructors): Test all the above.

2006-07-29 04:11:33 +00:00

.cvsignore

Add testsuite.log

2003-03-14 01:31:24 +00:00

actions.at

Clean up handling of %destructor for the end token (token 0).

2006-07-29 04:11:33 +00:00

atlocal.in

* tests/atlocal.in (LIBS): Pass INTLLIBS to address failures on at

2005-09-19 07:22:17 +00:00

bison.in

Word changes.