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Fix a destructor bug reported by Wolfgang Spraul in

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<http://lists.gnu.org/archive/html/bug-bison/2005-05/msg00042.html>.
* data/yacc.c (yyabortlab): Don't call destructor, and
don't set yychar to EMPTY.
(yyoverflowlab): Don't call destructor.
(yyreturn): Call destructor, if yychar is neither YYEOF nor YYEMPTY.
* tests/calc.at (AT_CHECK_CALC): Expect one fewer output lines,
since we no longer output the message "discarding lookahead token
end of input ()".
This commit is contained in:
Paul Eggert
2005-05-22 05:20:01 +00:00
parent 5e6f62f2f1
commit cea1469d47
3 changed files with 19 additions and 9 deletions
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12
data/yacc.c
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@@ -135,7 +135,7 @@ m4_changecom()
m4_divert(0)dnl
@output @output_parser_name@
b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])[
[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005])[
/* As a special exception, when this file is copied by Bison into a
Bison output file, you may use that output file without restriction.
@@ -1296,9 +1296,6 @@ yyacceptlab:
| yyabortlab -- YYABORT comes here. |
`-----------------------------------*/
yyabortlab:
yydestruct (_("Error: discarding lookahead"),
yytoken, &yylval]b4_location_if([, &yylloc])[);
yychar = YYEMPTY;
yyresult = 1;
goto yyreturn;
@@ -1308,13 +1305,14 @@ yyabortlab:
`----------------------------------------------*/
yyoverflowlab:
yyerror (]b4_yyerror_args[_("parser stack overflow"));
yydestruct (_("Error: discarding lookahead"),
yytoken, &yylval]b4_location_if([, &yylloc])[);
yyresult = 2;
/* Fall through. */
#endif
yyreturn:
if (yychar != YYEOF && yychar != YYEMPTY)
yydestruct (_("Error: discarding lookahead"),
yytoken, &yylval]b4_location_if([, &yylloc])[);
if (yyssp != yyss)
for (;;)
{
@@ -1337,7 +1335,7 @@ b4_epilogue
m4_if(b4_defines_flag, 0, [],
[@output @output_header_name@
b4_copyright([Skeleton parser for Yacc-like parsing with Bison],
[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004])
[1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005])
/* As a special exception, when this file is copied by Bison into a
Bison output file, you may use that output file without restriction.