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Have lalr1.cc catch with Paul Eggert's patch to fix the infinite

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error recovery loops.  This patch is based on
<http://mail.gnu.org/archive/html/bison-patches/2003-06/msg00000.html>.
Also, augment the similarity between lalr1.cc and yacc.c.
Note: the locations of error recovery rules are not correct yet.
* data/lalr1.cc: Comment changes to augment the similarity between
lalr1.cc and yacc.c.
(YYERROR): Goto to yyerrorlab, not yyerrlab1.
(yyerrlab1): Remove, but where it used to be (now the bottom part of
yyerrlab), when hitting EOF, pop the whole stack here instead of
merely falling thru the default error handling mechanism.
(yyerrorlab): New label, with the old contents of YYERROR,
plus the following change: pop the stack of rhs corresponding
to the production that invoked YYERROR.  That is how Yacc
behaves (required by POSIX).
* tests/calc.at (AT_CHECK_CALC_LALR1_CC): No longer expected to
fail.
This commit is contained in:
Akim Demaille
2003-08-25 08:06:17 +00:00
parent 1f7a61ff99
commit 473013144d
3 changed files with 85 additions and 20 deletions
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21
ChangeLog
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@@ -1,3 +1,24 @@
2003-08-25 Akim Demaille <akim@epita.fr>
Have lalr1.cc catch with Paul Eggert's patch to fix the infinite
error recovery loops. This patch is based on
<http://mail.gnu.org/archive/html/bison-patches/2003-06/msg00000.html>.
Also, augment the similarity between lalr1.cc and yacc.c.
Note: the locations of error recovery rules are not correct yet.
* data/lalr1.cc: Comment changes to augment the similarity between
lalr1.cc and yacc.c.
(YYERROR): Goto to yyerrorlab, not yyerrlab1.
(yyerrlab1): Remove, but where it used to be (now the bottom part of
yyerrlab), when hitting EOF, pop the whole stack here instead of
merely falling thru the default error handling mechanism.
(yyerrorlab): New label, with the old contents of YYERROR,
plus the following change: pop the stack of rhs corresponding
to the production that invoked YYERROR. That is how Yacc
behaves (required by POSIX).
* tests/calc.at (AT_CHECK_CALC_LALR1_CC): No longer expected to
fail.
2003-08-25 Akim Demaille <akim@epita.fr>
Tune local.at so that people can "autom4te -l autotest calc.at -o