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* data/c.m4 (b4_yy_symbol_print_generate):

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(b4_yy_symbol_print_generate): Use 'YYSTYPE const' rather than
'const YYSTYPE', and similarly for YYLTYPE.  This fixes one
of the bugs reported today by Derek M Jones in
<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00027.html>.
* doc/bison.texinfo (Value Type): Document that YYSTYPE must be
defined to be a type name without parens or brackets.
(Location Type): Similarly for YYLTYPE.
* tests/regression.at (Trivial grammars): Put in a test for this
bug that will be caught by 'make maintainer-check' (though not,
alas, by 'make check' unless your compiler is picky).
This commit is contained in:
Paul Eggert
2006-05-21 04:48:47 +00:00
parent 95c0638353
commit 50cce58e9a
4 changed files with 25 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
ChangeLog
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@@ -1,3 +1,17 @@
2006-05-20 Paul Eggert <eggert@cs.ucla.edu>
* data/c.m4 (b4_yy_symbol_print_generate):
(b4_yy_symbol_print_generate): Use 'YYSTYPE const' rather than
'const YYSTYPE', and similarly for YYLTYPE. This fixes one
of the bugs reported today by Derek M Jones in
<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00027.html>.
* doc/bison.texinfo (Value Type): Document that YYSTYPE must be
defined to be a type name without parens or brackets.
(Location Type): Similarly for YYLTYPE.
* tests/regression.at (Trivial grammars): Put in a test for this
bug that will be caught by 'make maintainer-check' (though not,
alas, by 'make check' unless your compiler is picky).
2006-05-19 Paul Eggert <eggert@cs.ucla.edu>
* NEWS: Version 2.2.

8
data/c.m4
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@@ -483,8 +483,8 @@ m4_define_default([b4_yy_symbol_print_generate],
[static void],
[[FILE *yyoutput], [yyoutput]],
[[int yytype], [yytype]],
[[const YYSTYPE * const yyvaluep], [yyvaluep]][]dnl
b4_locations_if([, [[const YYLTYPE * const yylocationp], [yylocationp]]])[]dnl
[[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl
b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
m4_ifset([b4_parse_param], [, b4_parse_param]))[
{
if (!yyvaluep)
@@ -515,8 +515,8 @@ b4_parse_param_use[]dnl
[static void],
[[FILE *yyoutput], [yyoutput]],
[[int yytype], [yytype]],
[[const YYSTYPE * const yyvaluep], [yyvaluep]][]dnl
b4_locations_if([, [[const YYLTYPE * const yylocationp], [yylocationp]]])[]dnl
[[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl
b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
m4_ifset([b4_parse_param], [, b4_parse_param]))[
{
if (yytype < YYNTOKENS)

6
doc/bison.texinfo
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@@ -3067,6 +3067,8 @@ specify some other type, define @code{YYSTYPE} as a macro, like this:
@end example
@noindent
@code{YYSTYPE}'s replacement list should be a type name
that does not contain parentheses or square brackets.
This macro definition must go in the prologue of the grammar file
(@pxref{Grammar Outline, ,Outline of a Bison Grammar}).
@@ -3463,7 +3465,9 @@ actions to take when rules are matched.
Defining a data type for locations is much simpler than for semantic values,
since all tokens and groupings always use the same type.
The type of locations is specified by defining a macro called @code{YYLTYPE}.
You can specify the type of locations by defining a macro called
@code{YYLTYPE}, just as you can specify the semantic value type by
defining @code{YYSTYPE} (@pxref{Value Type}).
When @code{YYLTYPE} is not defined, Bison uses a default structure type with
four members:

2
tests/regression.at
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@@ -31,6 +31,7 @@ AT_DATA_GRAMMAR([input.y],
[[%{
void yyerror (char const *);
int yylex (void);
#define YYSTYPE int *
%}
%error-verbose
@@ -42,6 +43,7 @@ program: 'x';
AT_CHECK([bison -o input.c input.y])
AT_COMPILE([input.o], [-c input.c])
AT_COMPILE([input.o], [-DYYDEBUG -c input.c])
AT_CLEANUP