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portability: fix pointer arithmetic to conform to C standard.

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Reported by Tys Lefering at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00035.html>.
This fix is already implemented in glr.c and does not apply to
lalr1.java.
* data/lalr1.cc (yy::parser::parse): Increase size of
yyerror_range and adjust subscripting so you don't have to
subtract one from the beginning of the array.
* data/yacc.c (b4_declare_parser_state_variables,
yyparse, yypush_parse): Likewise.
This commit is contained in:
Joel E. Denny
2010-04-03 14:58:22 -04:00
parent 18493762be
commit 48f4100a82
5 changed files with 34 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
ChangeLog
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@@ -1,3 +1,16 @@
2010-04-03 Joel E. Denny <jdenny@ces.clemson.edu>
portability: fix pointer arithmetic to conform to C standard.
Reported by Tys Lefering at
<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00035.html>.
This fix is already implemented in glr.c and does not apply to
lalr1.java.
* data/lalr1.cc (yy::parser::parse): Increase size of
yyerror_range and adjust subscripting so you don't have to
subtract one from the beginning of the array.
* data/yacc.c (b4_declare_parser_state_variables,
yyparse, yypush_parse): Likewise.
2010-03-31 Joel E. Denny <jdenny@ces.clemson.edu> 2010-03-31 Joel E. Denny <jdenny@ces.clemson.edu>
portability: fix test suite for GCC 4.5's new #error message. portability: fix test suite for GCC 4.5's new #error message.

12
data/lalr1.cc
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@@ -538,7 +538,7 @@ do { \
/// Location of the lookahead. /// Location of the lookahead.
location_type yylloc; location_type yylloc;
/// The locations where the error started and ended. /// The locations where the error started and ended.
location_type yyerror_range[2]; location_type yyerror_range[3];
/// $$. /// $$.
semantic_type yyval; semantic_type yyval;
@@ -709,7 +709,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
b4_error_verbose_if([, yytoken])[)); b4_error_verbose_if([, yytoken])[));
} }
yyerror_range[0] = yylloc; yyerror_range[1] = yylloc;
if (yyerrstatus_ == 3) if (yyerrstatus_ == 3)
{ {
/* If just tried and failed to reuse lookahead token after an /* If just tried and failed to reuse lookahead token after an
@@ -744,7 +744,7 @@ b4_error_verbose_if([, yytoken])[));
if (false) if (false)
goto yyerrorlab; goto yyerrorlab;
yyerror_range[0] = yylocation_stack_[yylen - 1]; yyerror_range[1] = yylocation_stack_[yylen - 1];
/* Do not reclaim the symbols of the rule which action triggered /* Do not reclaim the symbols of the rule which action triggered
this YYERROR. */ this YYERROR. */
yypop_ (yylen); yypop_ (yylen);
@@ -776,7 +776,7 @@ b4_error_verbose_if([, yytoken])[));
if (yystate_stack_.height () == 1) if (yystate_stack_.height () == 1)
YYABORT; YYABORT;
yyerror_range[0] = yylocation_stack_[0]; yyerror_range[1] = yylocation_stack_[0];
yydestruct_ ("Error: popping", yydestruct_ ("Error: popping",
yystos_[yystate], yystos_[yystate],
&yysemantic_stack_[0], &yylocation_stack_[0]); &yysemantic_stack_[0], &yylocation_stack_[0]);
@@ -785,10 +785,10 @@ b4_error_verbose_if([, yytoken])[));
YY_STACK_PRINT (); YY_STACK_PRINT ();
} }
yyerror_range[1] = yylloc; yyerror_range[2] = yylloc;
// Using YYLLOC is tempting, but would change the location of // Using YYLLOC is tempting, but would change the location of
// the lookahead. YYLOC is available though. // the lookahead. YYLOC is available though.
YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2); YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
yysemantic_stack_.push (yylval); yysemantic_stack_.push (yylval);
yylocation_stack_.push (yyloc); yylocation_stack_.push (yyloc);

12
data/yacc.c
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@@ -1072,7 +1072,7 @@ m4_define([b4_declare_parser_state_variables],
YYLTYPE *yylsp; YYLTYPE *yylsp;
/* The locations where the error started and ended. */ /* The locations where the error started and ended. */
YYLTYPE yyerror_range[2]; YYLTYPE yyerror_range[3];
]])[ ]])[
YYSIZE_T yystacksize; YYSIZE_T yystacksize;
]]) ]])
@@ -1533,7 +1533,7 @@ yyerrlab:
#endif #endif
} }
]b4_locations_if([[ yyerror_range[0] = yylloc;]])[ ]b4_locations_if([[ yyerror_range[1] = yylloc;]])[
if (yyerrstatus == 3) if (yyerrstatus == 3)
{ {
@@ -1570,7 +1570,7 @@ yyerrorlab:
if (/*CONSTCOND*/ 0) if (/*CONSTCOND*/ 0)
goto yyerrorlab; goto yyerrorlab;
]b4_locations_if([[ yyerror_range[0] = yylsp[1-yylen]; ]b4_locations_if([[ yyerror_range[1] = yylsp[1-yylen];
]])[ /* Do not reclaim the symbols of the rule which action triggered ]])[ /* Do not reclaim the symbols of the rule which action triggered
this YYERROR. */ this YYERROR. */
YYPOPSTACK (yylen); YYPOPSTACK (yylen);
@@ -1604,7 +1604,7 @@ yyerrlab1:
if (yyssp == yyss) if (yyssp == yyss)
YYABORT; YYABORT;
]b4_locations_if([[ yyerror_range[0] = *yylsp;]])[ ]b4_locations_if([[ yyerror_range[1] = *yylsp;]])[
yydestruct ("Error: popping", yydestruct ("Error: popping",
yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[); yystos[yystate], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
YYPOPSTACK (1); YYPOPSTACK (1);
@@ -1614,10 +1614,10 @@ yyerrlab1:
*++yyvsp = yylval; *++yyvsp = yylval;
]b4_locations_if([[ ]b4_locations_if([[
yyerror_range[1] = yylloc; yyerror_range[2] = yylloc;
/* Using YYLLOC is tempting, but would change the location of /* Using YYLLOC is tempting, but would change the location of
the lookahead. YYLOC is available though. */ the lookahead. YYLOC is available though. */
YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2); YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
*++yylsp = yyloc;]])[ *++yylsp = yyloc;]])[
/* Shift the error token. */ /* Shift the error token. */

16
src/parse-gram.c
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@@ -1,4 +1,4 @@
/* A Bison parser, made by GNU Bison 2.4.1.61-f1ce. */ /* A Bison parser, made by GNU Bison 2.4.2.5-1849. */
/* Skeleton implementation for Bison's Yacc-like parsers in C /* Skeleton implementation for Bison's Yacc-like parsers in C
@@ -45,7 +45,7 @@
#define YYBISON 1 #define YYBISON 1
/* Bison version. */ /* Bison version. */
#define YYBISON_VERSION "2.4.1.61-f1ce" #define YYBISON_VERSION "2.4.2.5-1849"
/* Skeleton name. */ /* Skeleton name. */
#define YYSKELETON_NAME "yacc.c" #define YYSKELETON_NAME "yacc.c"
@@ -1640,7 +1640,7 @@ YYLTYPE yylloc;
YYLTYPE *yylsp; YYLTYPE *yylsp;
/* The locations where the error started and ended. */ /* The locations where the error started and ended. */
YYLTYPE yyerror_range[2]; YYLTYPE yyerror_range[3];
YYSIZE_T yystacksize; YYSIZE_T yystacksize;
@@ -2703,7 +2703,7 @@ yyerrlab:
#endif #endif
} }
yyerror_range[0] = yylloc; yyerror_range[1] = yylloc;
if (yyerrstatus == 3) if (yyerrstatus == 3)
{ {
@@ -2740,7 +2740,7 @@ yyerrorlab:
if (/*CONSTCOND*/ 0) if (/*CONSTCOND*/ 0)
goto yyerrorlab; goto yyerrorlab;
yyerror_range[0] = yylsp[1-yylen]; yyerror_range[1] = yylsp[1-yylen];
/* Do not reclaim the symbols of the rule which action triggered /* Do not reclaim the symbols of the rule which action triggered
this YYERROR. */ this YYERROR. */
YYPOPSTACK (yylen); YYPOPSTACK (yylen);
@@ -2774,7 +2774,7 @@ yyerrlab1:
if (yyssp == yyss) if (yyssp == yyss)
YYABORT; YYABORT;
yyerror_range[0] = *yylsp; yyerror_range[1] = *yylsp;
yydestruct ("Error: popping", yydestruct ("Error: popping",
yystos[yystate], yyvsp, yylsp); yystos[yystate], yyvsp, yylsp);
YYPOPSTACK (1); YYPOPSTACK (1);
@@ -2784,10 +2784,10 @@ yyerrlab1:
*++yyvsp = yylval; *++yyvsp = yylval;
yyerror_range[1] = yylloc; yyerror_range[2] = yylloc;
/* Using YYLLOC is tempting, but would change the location of /* Using YYLLOC is tempting, but would change the location of
the lookahead. YYLOC is available though. */ the lookahead. YYLOC is available though. */
YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2); YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
*++yylsp = yyloc; *++yylsp = yyloc;
/* Shift the error token. */ /* Shift the error token. */

2
src/parse-gram.h
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@@ -1,4 +1,4 @@
/* A Bison parser, made by GNU Bison 2.4.1.61-f1ce. */ /* A Bison parser, made by GNU Bison 2.4.2.5-1849. */
/* Skeleton interface for Bison's Yacc-like parsers in C /* Skeleton interface for Bison's Yacc-like parsers in C