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warnings: introduce -Wprecedence

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The new warning category "precedence" flags useless precedence and
associativity.  -Wprecedence can now be used, it is disabled by default.
The warnings about precedence and associativity are grouped into one, and
the testsuite was corrected accordingly.

* src/complain.h (warnings): Introduce "precedence".
* src/complain.c (warnings_print_categories): Adjust.
* src/getargs.c (warnings_args, warning_types): Likewise.
* src/symtab.h, src/symtab.c (print_associativity_warnings): Remove.
* src/symtab.h (register_assoc): Correct arguments.
* src/symtab.c (print_precedence_warnings): Print both warnings together.
* doc/bison.texi (Bison options): Document the warnings and provide an
example.
* tests/conflicts.at, tests/existing.at, tests/local.at,
* tests/regression.at: Adapt the testsuite for the new category
(-Wprecedence instead of -Wother where appropriate).
This commit is contained in:
Valentin Tolmer
2013-01-30 11:30:15 +01:00
committed by Akim Demaille
parent df1ca1b0de
commit cc2235ace2
12 changed files with 331 additions and 232 deletions
Download Patch File Download Diff File Expand all files Collapse all files

77
NEWS
View File

@@ -198,13 +198,6 @@ GNU Bison NEWS
bar.y: error: shift/reduce conflicts: 1 found, 0 expected bar.y: error: shift/reduce conflicts: 1 found, 0 expected
bar.y: error: reduce/reduce conflicts: 2 found, 0 expected bar.y: error: reduce/reduce conflicts: 2 found, 0 expected
*** Useless precedence
Bison now warns about symbols with a declared precedence but no declared
associativity (i.e. declared with %precedence), and whose precedence is
never used. In that case, the symbol can be safely declared with %token
instead, without modifying the parsing tables.
** Additional yylex/yyparse arguments ** Additional yylex/yyparse arguments
The new directive %param declares additional arguments to both yylex and The new directive %param declares additional arguments to both yylex and
@@ -303,6 +296,76 @@ GNU Bison NEWS
when declaring associativity at the same time, with %left (or %right, when declaring associativity at the same time, with %left (or %right,
%precedence, %nonassoc), B was inferior to A. %precedence, %nonassoc), B was inferior to A.
** Useless precedence and associativity
When developping and maintaining a grammar, useless associativity and
precedence directives are common. They can be a nuisance: new ambiguities
arising are sometimes masked because their conflicts are resolved due to
the extra precedence or associativity information. Furthermore, it can
hinder the comprehension of a new grammar: one will wonder about the role
of a precedence, where in fact it is useless. The following changes aim
at detecting and reporting these extra directives.
*** Precedence warning category
A new category of warning, -Wprecedence, was introduced. It flags the
useless precedence and associativity directives.
*** Useless associativity
Bison now warns about symbols with a declared associativity that is never
used to resolve conflicts. In that case, using %precedence is sufficient;
the parsing tables will remain unchanged. Solving these warnings may raise
useless precedence warnings, as the symbols no longer have associativity.
For example:
%left '+'
%left '*'
%%
exp:
"num"
| exp '+' "num"
| exp '*' exp
;
will produce a
warning: useless associativity for '+', use %precedence [-Wprecedence]
%left '+'
^^^
*** Useless precedence
Bison now warns about symbols with a declared precedence and no declared
associativity (i.e., declared with %precedence), and whose precedence is
never used. In that case, the symbol can be safely declared with %token
instead, without modifying the parsing tables. For example:
%precedence '='
%%
exp: "var" '=' "num";
will produce a
warning: useless precedence for '=' [-Wprecedence]
%precedence '='
^^^
*** Useless precedence and associativity
In case of both useless precedence and associativity, the issue is flagged
as follows:
%nonassoc '='
%%
exp: "var" '=' "num";
The warning is:
warning: useless precedence and associativity for '=' [-Wprecedence]
%nonassoc '='
^^^
* Noteworthy changes in release 2.7 (2012-12-12) [stable] * Noteworthy changes in release 2.7 (2012-12-12) [stable]
** Bug fixes ** Bug fixes

61
doc/bison.texi
View File

@@ -9716,6 +9716,67 @@ no effect on the conflict report.
Deprecated constructs whose support will be removed in future versions of Deprecated constructs whose support will be removed in future versions of
Bison. Bison.
@item precedence
Useless precedence and associativity directives. Disabled by default.
Consider for instance the following grammar:
@example
@group
%nonassoc "="
%left "+"
%left "*"
%precedence "("
@end group
%%
@group
stmt:
exp
| "var" "=" exp
;
@end group
@group
exp:
exp "+" exp
| exp "*" "num"
| "(" exp ")"
| "num"
;
@end group
@end example
Bison reports:
@c cannot leave the location and the [-Wprecedence] for lack of
@c width in PDF.
@example
@group
warning: useless precedence and associativity for "="
%nonassoc "="
^^^
@end group
@group
warning: useless associativity for "*", use %precedence
%left "*"
^^^
@end group
@group
warning: useless precedence for "("
%precedence "("
^^^
@end group
@end example
One would get the exact same parser with the following directives instead:
@example
@group
%left "+"
%precedence "*"
@end group
@end example
@item other @item other
All warnings not categorized above. These warnings are enabled by default. All warnings not categorized above. These warnings are enabled by default.

1
src/complain.c
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@@ -50,6 +50,7 @@ warnings_print_categories (warnings warn_flags)
"conflicts-sr", "conflicts-sr",
"conflicts-rr", "conflicts-rr",
"deprecated", "deprecated",
"precedence",
"other" "other"
}; };

4
src/complain.h
View File

@@ -36,7 +36,9 @@ typedef enum
Wconflicts_sr = 1 << 2, /**< S/R conflicts. */ Wconflicts_sr = 1 << 2, /**< S/R conflicts. */
Wconflicts_rr = 1 << 3, /**< R/R conflicts. */ Wconflicts_rr = 1 << 3, /**< R/R conflicts. */
Wdeprecated = 1 << 4, /**< Obsolete constructs. */ Wdeprecated = 1 << 4, /**< Obsolete constructs. */
Wother = 1 << 5, /**< All other warnings. */ Wprecedence = 1 << 5, /**< Useless precedence and associativity. */
Wother = 1 << 6, /**< All other warnings. */
Werror = 1 << 10, /** This bit is no longer used. */ Werror = 1 << 10, /** This bit is no longer used. */

3
src/getargs.c
View File

@@ -252,6 +252,7 @@ static const char * const warnings_args[] =
"conflicts-sr - S/R conflicts", "conflicts-sr - S/R conflicts",
"conflicts-rr - R/R conflicts", "conflicts-rr - R/R conflicts",
"deprecated - obsolete constructs", "deprecated - obsolete constructs",
"precedence - useless precedence and associativity",
"other - all other warnings", "other - all other warnings",
"all - all of the above", "all - all of the above",
"error - warnings are errors", "error - warnings are errors",
@@ -266,6 +267,7 @@ static const int warnings_types[] =
Wconflicts_sr, Wconflicts_sr,
Wconflicts_rr, Wconflicts_rr,
Wdeprecated, Wdeprecated,
Wprecedence,
Wother, Wother,
Wall, Wall,
Werror Werror
@@ -381,6 +383,7 @@ Warning categories include:\n\
`conflicts-sr' S/R conflicts (enabled by default)\n\ `conflicts-sr' S/R conflicts (enabled by default)\n\
`conflicts-rr' R/R conflicts (enabled by default)\n\ `conflicts-rr' R/R conflicts (enabled by default)\n\
`deprecated' obsolete constructs\n\ `deprecated' obsolete constructs\n\
`precedence' useless precedence and associativity\n\
`other' all other warnings (enabled by default)\n\ `other' all other warnings (enabled by default)\n\
`all' all the warnings\n\ `all' all the warnings\n\
`no-CATEGORY' turn off warnings in CATEGORY\n\ `no-CATEGORY' turn off warnings in CATEGORY\n\

2
src/main.c
View File

@@ -146,8 +146,6 @@ main (int argc, char *argv[])
print_precedence_warnings (); print_precedence_warnings ();
print_assoc_warnings ();
/* Output file names. */ /* Output file names. */
compute_output_file_names (); compute_output_file_names ();

53
src/symtab.c
View File

@@ -1057,29 +1057,6 @@ register_precedence (graphid first, graphid snd)
} }
/*--------------------------------------------------.
| Print a warning for unused precedence relations. |
`--------------------------------------------------*/
void
print_precedence_warnings (void)
{
int i;
if (!prec_nodes)
init_prec_nodes ();
for (i = 0; i < nsyms; ++i)
{
symbol *s = symbols[i];
if (s
&& s->prec != 0
&& !prec_nodes[i]->pred
&& !prec_nodes[i]->succ
&& s->assoc == precedence_assoc)
complain (&s->location, Wother,
_("useless precedence for %s"), s->tag);
}
}
/*---------------------------------------. /*---------------------------------------.
| Initialize association tracking table. | | Initialize association tracking table. |
`---------------------------------------*/ `---------------------------------------*/
@@ -1119,21 +1096,35 @@ register_assoc (graphid i, graphid j)
used_assoc[j] = true; used_assoc[j] = true;
} }
/*------------------------------------------------------. /*--------------------------------------------------.
| Print a warning for each unused symbol associativity. | | Print a warning for unused precedence relations. |
`------------------------------------------------------*/ `--------------------------------------------------*/
void void
print_assoc_warnings (void) print_precedence_warnings (void)
{ {
graphid i; int i;
if (!prec_nodes)
init_prec_nodes ();
if (!used_assoc) if (!used_assoc)
init_assoc (); init_assoc ();
for (i = 0; i < nsyms; ++i) for (i = 0; i < nsyms; ++i)
{ {
symbol *s = symbols[i]; symbol *s = symbols[i];
if (is_assoc_useless (s)) if (s
complain (&s->location, Wother, && s->prec != 0
_("useless associativity for %s"), s->tag); && !prec_nodes[i]->pred
&& !prec_nodes[i]->succ)
{
if (is_assoc_useless (s))
complain (&s->location, Wprecedence,
_("useless precedence and associativity for %s"), s->tag);
else if (s->assoc == precedence_assoc)
complain (&s->location, Wprecedence,
_("useless precedence for %s"), s->tag);
}
else if (is_assoc_useless (s))
complain (&s->location, Wprecedence,
_("useless associativity for %s, use %%precedence"), s->tag);
} }
} }

7
src/symtab.h
View File

@@ -266,7 +266,8 @@ struct symgraph
void register_precedence (graphid first, graphid snd); void register_precedence (graphid first, graphid snd);
/** Print a warning for each symbol whose precedence is useless. */ /** Print a warning for each symbol whose precedence and/or associativity
* is useless. */
void print_precedence_warnings (void); void print_precedence_warnings (void);
@@ -274,9 +275,7 @@ void print_precedence_warnings (void);
| Symbol associativity | | Symbol associativity |
`----------------------*/ `----------------------*/
void register_assoc (int i, int j); void register_assoc (graphid i, graphid j);
void print_assoc_warnings (void);
/*-----------------. /*-----------------.
| Semantic types. | | Semantic types. |

85
tests/conflicts.at
View File

@@ -17,42 +17,43 @@
AT_BANNER([[Conflicts.]]) AT_BANNER([[Conflicts.]])
## ------------------------------ ## ## ------------------------------- ##
## Useless associativity warning. ## ## Useless associativity warning. ##
## ------------------------------ ## ## ------------------------------- ##
AT_SETUP([Useless associativity warning]) AT_SETUP([Useless associativity warning])
AT_DATA([[input.y]], AT_DATA([[input.y]],
[[%token T [[%nonassoc "="
%left A B %left "+"
%right C %left "*"
%nonassoc D %precedence "("
%precedence E
%% %%
e: T A T stmt:
| T B T exp
| T C T | "var" "=" exp
| T D T ;
| T E T
exp:
exp "+" exp
| exp "*" "num"
| "(" exp ")"
| "num"
; ;
]]) ]])
AT_BISON_CHECK([input.y], 0, [], AT_BISON_CHECK([-Wprecedence input.y], 0, [],
[[input.y:5.13: warning: useless precedence for E [-Wother] [[input.y:1.11-13: warning: useless precedence and associativity for "=" [-Wprecedence]
input.y:2.7: warning: useless associativity for A [-Wother] input.y:3.7-9: warning: useless associativity for "*", use %precedence [-Wprecedence]
input.y:2.9: warning: useless associativity for B [-Wother] input.y:4.13-15: warning: useless precedence for "(" [-Wprecedence]
input.y:3.8: warning: useless associativity for C [-Wother]
input.y:4.11: warning: useless associativity for D [-Wother]
]]) ]])
AT_CLEANUP AT_CLEANUP
## ------------------------ ## ## ------------------------- ##
## Token declaration order. ## ## Token declaration order. ##
## ------------------------ ## ## ------------------------- ##
# This test checks that token are declared left to right when in a precedence # This test checks that token are declared left to right when in a precedence
# statement. # statement.
@@ -110,27 +111,7 @@ int main (void)
} }
]]) ]])
AT_BISON_CHECK([-o input.c input.y], [], [], AT_BISON_CHECK([-o input.c input.y])
[[input.y:24.13: warning: useless precedence for R [-Wother]
input.y:24.15: warning: useless precedence for S [-Wother]
input.y:24.17: warning: useless precedence for T [-Wother]
input.y:24.19: warning: useless precedence for U [-Wother]
input.y:25.13: warning: useless precedence for V [-Wother]
input.y:25.15: warning: useless precedence for W [-Wother]
input.y:18.8: warning: useless associativity for E [-Wother]
input.y:18.10: warning: useless associativity for F [-Wother]
input.y:18.12: warning: useless associativity for G [-Wother]
input.y:19.8: warning: useless associativity for H [-Wother]
input.y:19.10: warning: useless associativity for I [-Wother]
input.y:20.8: warning: useless associativity for J [-Wother]
input.y:21.8: warning: useless associativity for K [-Wother]
input.y:22.8: warning: useless associativity for L [-Wother]
input.y:22.10: warning: useless associativity for M [-Wother]
input.y:22.12: warning: useless associativity for N [-Wother]
input.y:23.11: warning: useless associativity for O [-Wother]
input.y:23.13: warning: useless associativity for P [-Wother]
input.y:23.15: warning: useless associativity for Q [-Wother]
]])
AT_COMPILE([input]) AT_COMPILE([input])
AT_PARSER_CHECK([./input]) AT_PARSER_CHECK([./input])
@@ -174,17 +155,17 @@ f: B
; ;
]]) ]])
AT_BISON_CHECK([-fcaret -o input.c input.y], 0, [], AT_BISON_CHECK([-Wprecedence -fcaret -o input.c input.y], 0, [],
[[input.y:2.13: warning: useless precedence for Z [-Wother] [[input.y:2.13: warning: useless precedence for Z [-Wprecedence]
%precedence Z %precedence Z
^ ^
input.y:5.7: warning: useless associativity for W [-Wother] input.y:5.7: warning: useless precedence and associativity for W [-Wprecedence]
%left W %left W
^ ^
input.y:6.8: warning: useless associativity for V [-Wother] input.y:6.8: warning: useless precedence and associativity for V [-Wprecedence]
%right V %right V
^ ^
input.y:7.11: warning: useless associativity for U [-Wother] input.y:7.11: warning: useless precedence and associativity for U [-Wprecedence]
%nonassoc U %nonassoc U
^ ^
]]) ]])
@@ -1196,10 +1177,10 @@ e: e '+' e
; ;
]]) ]])
AT_BISON_CHECK([-o input.c input.y], 0, [], AT_BISON_CHECK([-Wall -o input.c input.y], 0, [],
[[input.y: warning: 4 shift/reduce conflicts [-Wconflicts-sr] [[input.y: warning: 4 shift/reduce conflicts [-Wconflicts-sr]
input.y:1.7-9: warning: useless associativity for '+' [-Wother] input.y:1.7-9: warning: useless precedence and associativity for '+' [-Wprecedence]
input.y:2.7-9: warning: useless associativity for '*' [-Wother] input.y:2.7-9: warning: useless precedence and associativity for '*' [-Wprecedence]
]]) ]])
AT_CLEANUP AT_CLEANUP

258
tests/existing.at
View File

@@ -428,43 +428,43 @@ dnl don't like even `print $!4;'.
dnl BISON-STDERR dnl BISON-STDERR
[AT_COND_CASE([[canonical LR]], [AT_COND_CASE([[canonical LR]],
[[input.y: warning: 265 shift/reduce conflicts [-Wconflicts-sr] [[input.y: warning: 265 shift/reduce conflicts [-Wconflicts-sr]
input.y:19.8-16: warning: useless associativity for FUNC_CALL [-Wother] input.y:19.8-16: warning: useless associativity for FUNC_CALL, use %precedence [-Wprecedence]
input.y:21.8-14: warning: useless associativity for YNUMBER [-Wother] input.y:21.8-14: warning: useless associativity for YNUMBER, use %precedence [-Wprecedence]
input.y:21.16-22: warning: useless associativity for YSTRING [-Wother] input.y:21.16-22: warning: useless associativity for YSTRING, use %precedence [-Wprecedence]
input.y:22.14-22: warning: useless associativity for APPEND_OP [-Wother] input.y:22.14-22: warning: useless precedence and associativity for APPEND_OP [-Wprecedence]
input.y:23.8-15: warning: useless associativity for ASSIGNOP [-Wother] input.y:23.8-15: warning: useless associativity for ASSIGNOP, use %precedence [-Wprecedence]
input.y:23.33-41: warning: useless associativity for CONCAT_OP [-Wother] input.y:23.33-41: warning: useless associativity for CONCAT_OP, use %precedence [-Wprecedence]
input.y:27.8-18: warning: useless associativity for LEX_GETLINE [-Wother] input.y:27.8-18: warning: useless precedence and associativity for LEX_GETLINE [-Wprecedence]
input.y:28.8-13: warning: useless associativity for LEX_IN [-Wother] input.y:28.8-13: warning: useless associativity for LEX_IN, use %precedence [-Wprecedence]
input.y:29.23-31: warning: useless associativity for INCREMENT [-Wother] input.y:29.23-31: warning: useless associativity for INCREMENT, use %precedence [-Wprecedence]
input.y:29.33-41: warning: useless associativity for DECREMENT [-Wother] input.y:29.33-41: warning: useless associativity for DECREMENT, use %precedence [-Wprecedence]
input.y:30.8-18: warning: useless associativity for LEX_BUILTIN [-Wother] input.y:30.8-18: warning: useless associativity for LEX_BUILTIN, use %precedence [-Wprecedence]
input.y:30.20-29: warning: useless associativity for LEX_LENGTH [-Wother] input.y:30.20-29: warning: useless associativity for LEX_LENGTH, use %precedence [-Wprecedence]
input.y:40.11-13: warning: useless associativity for ',' [-Wother] input.y:40.11-13: warning: useless precedence and associativity for ',' [-Wprecedence]
input.y:47.8-10: warning: useless associativity for '!' [-Wother] input.y:47.8-10: warning: useless associativity for '!', use %precedence [-Wprecedence]
input.y:47.12-16: warning: useless associativity for UNARY [-Wother] input.y:47.12-16: warning: useless associativity for UNARY, use %precedence [-Wprecedence]
input.y:50.7-9: warning: useless associativity for '$' [-Wother] input.y:50.7-9: warning: useless associativity for '$', use %precedence [-Wprecedence]
input.y:51.7-9: warning: useless associativity for '(' [-Wother] input.y:51.7-9: warning: useless associativity for '(', use %precedence [-Wprecedence]
input.y:51.11-13: warning: useless associativity for ')' [-Wother]]], input.y:51.11-13: warning: useless precedence and associativity for ')' [-Wprecedence]]],
[[input.y: warning: 65 shift/reduce conflicts [-Wconflicts-sr] [[input.y: warning: 65 shift/reduce conflicts [-Wconflicts-sr]
input.y:19.8-16: warning: useless associativity for FUNC_CALL [-Wother] input.y:19.8-16: warning: useless associativity for FUNC_CALL, use %precedence [-Wprecedence]
input.y:21.8-14: warning: useless associativity for YNUMBER [-Wother] input.y:21.8-14: warning: useless associativity for YNUMBER, use %precedence [-Wprecedence]
input.y:21.16-22: warning: useless associativity for YSTRING [-Wother] input.y:21.16-22: warning: useless associativity for YSTRING, use %precedence [-Wprecedence]
input.y:22.14-22: warning: useless associativity for APPEND_OP [-Wother] input.y:22.14-22: warning: useless precedence and associativity for APPEND_OP [-Wprecedence]
input.y:23.8-15: warning: useless associativity for ASSIGNOP [-Wother] input.y:23.8-15: warning: useless associativity for ASSIGNOP, use %precedence [-Wprecedence]
input.y:23.33-41: warning: useless associativity for CONCAT_OP [-Wother] input.y:23.33-41: warning: useless associativity for CONCAT_OP, use %precedence [-Wprecedence]
input.y:27.8-18: warning: useless associativity for LEX_GETLINE [-Wother] input.y:27.8-18: warning: useless precedence and associativity for LEX_GETLINE [-Wprecedence]
input.y:28.8-13: warning: useless associativity for LEX_IN [-Wother] input.y:28.8-13: warning: useless associativity for LEX_IN, use %precedence [-Wprecedence]
input.y:29.23-31: warning: useless associativity for INCREMENT [-Wother] input.y:29.23-31: warning: useless associativity for INCREMENT, use %precedence [-Wprecedence]
input.y:29.33-41: warning: useless associativity for DECREMENT [-Wother] input.y:29.33-41: warning: useless associativity for DECREMENT, use %precedence [-Wprecedence]
input.y:30.8-18: warning: useless associativity for LEX_BUILTIN [-Wother] input.y:30.8-18: warning: useless associativity for LEX_BUILTIN, use %precedence [-Wprecedence]
input.y:30.20-29: warning: useless associativity for LEX_LENGTH [-Wother] input.y:30.20-29: warning: useless associativity for LEX_LENGTH, use %precedence [-Wprecedence]
input.y:40.11-13: warning: useless associativity for ',' [-Wother] input.y:40.11-13: warning: useless precedence and associativity for ',' [-Wprecedence]
input.y:47.8-10: warning: useless associativity for '!' [-Wother] input.y:47.8-10: warning: useless associativity for '!', use %precedence [-Wprecedence]
input.y:47.12-16: warning: useless associativity for UNARY [-Wother] input.y:47.12-16: warning: useless associativity for UNARY, use %precedence [-Wprecedence]
input.y:50.7-9: warning: useless associativity for '$' [-Wother] input.y:50.7-9: warning: useless associativity for '$', use %precedence [-Wprecedence]
input.y:51.7-9: warning: useless associativity for '(' [-Wother] input.y:51.7-9: warning: useless associativity for '(', use %precedence [-Wprecedence]
input.y:51.11-13: warning: useless associativity for ')' [-Wother]]])[ input.y:51.11-13: warning: useless precedence and associativity for ')' [-Wprecedence]]])[
]], ]],
dnl LAST-STATE dnl LAST-STATE
@@ -1406,20 +1406,20 @@ dnl BISON-STDERR
[AT_COND_CASE([[canonical LR]], [AT_COND_CASE([[canonical LR]],
[[input.y: warning: 1876 shift/reduce conflicts [-Wconflicts-sr] [[input.y: warning: 1876 shift/reduce conflicts [-Wconflicts-sr]
input.y: warning: 144 reduce/reduce conflicts [-Wconflicts-rr] input.y: warning: 144 reduce/reduce conflicts [-Wconflicts-rr]
input.y:32.9-12: warning: useless associativity for HQUA [-Wother] input.y:32.9-12: warning: useless associativity for HQUA, use %precedence [-Wprecedence]
input.y:53.8-14: warning: useless associativity for HASSIGN [-Wother] input.y:53.8-14: warning: useless associativity for HASSIGN, use %precedence [-Wprecedence]
input.y:54.9-15: warning: useless associativity for HORELSE [-Wother] input.y:54.9-15: warning: useless associativity for HORELSE, use %precedence [-Wprecedence]
input.y:55.9-16: warning: useless associativity for HANDTHEN [-Wother] input.y:55.9-16: warning: useless associativity for HANDTHEN, use %precedence [-Wprecedence]
input.y:61.9-12: warning: useless associativity for HNOT [-Wother] input.y:61.9-12: warning: useless associativity for HNOT, use %precedence [-Wprecedence]
input.y:68.7-11: warning: useless associativity for UNEAR [-Wother]]], input.y:68.7-11: warning: useless associativity for UNEAR, use %precedence [-Wprecedence]]],
[[input.y: warning: 78 shift/reduce conflicts [-Wconflicts-sr] [[input.y: warning: 78 shift/reduce conflicts [-Wconflicts-sr]
input.y: warning: 10 reduce/reduce conflicts [-Wconflicts-rr] input.y: warning: 10 reduce/reduce conflicts [-Wconflicts-rr]
input.y:32.9-12: warning: useless associativity for HQUA [-Wother] input.y:32.9-12: warning: useless associativity for HQUA, use %precedence [-Wprecedence]
input.y:53.8-14: warning: useless associativity for HASSIGN [-Wother] input.y:53.8-14: warning: useless associativity for HASSIGN, use %precedence [-Wprecedence]
input.y:54.9-15: warning: useless associativity for HORELSE [-Wother] input.y:54.9-15: warning: useless associativity for HORELSE, use %precedence [-Wprecedence]
input.y:55.9-16: warning: useless associativity for HANDTHEN [-Wother] input.y:55.9-16: warning: useless associativity for HANDTHEN, use %precedence [-Wprecedence]
input.y:61.9-12: warning: useless associativity for HNOT [-Wother] input.y:61.9-12: warning: useless associativity for HNOT, use %precedence [-Wprecedence]
input.y:68.7-11: warning: useless associativity for UNEAR [-Wother]]])[ input.y:68.7-11: warning: useless associativity for UNEAR, use %precedence [-Wprecedence]]])[
]], ]],
dnl LAST-STATE dnl LAST-STATE
@@ -2002,87 +2002,87 @@ dnl without being followed by "of".)
dnl BISON-STDERR dnl BISON-STDERR
[[input.y:471.11-48: warning: rule useless in parser due to conflicts: path: ORDINAL LAST object_type relative_path [-Wother] [[input.y:471.11-48: warning: rule useless in parser due to conflicts: path: ORDINAL LAST object_type relative_path [-Wother]
input.y:19.8-12: warning: useless associativity for LABEL [-Wother] input.y:19.8-12: warning: useless associativity for LABEL, use %precedence [-Wprecedence]
input.y:20.8-15: warning: useless associativity for VARIABLE [-Wother] input.y:20.8-15: warning: useless associativity for VARIABLE, use %precedence [-Wprecedence]
input.y:21.8-13: warning: useless associativity for NUMBER [-Wother] input.y:21.8-13: warning: useless associativity for NUMBER, use %precedence [-Wprecedence]
input.y:22.8-11: warning: useless associativity for TEXT [-Wother] input.y:22.8-11: warning: useless associativity for TEXT, use %precedence [-Wprecedence]
input.y:25.8-14: warning: useless associativity for ORDINAL [-Wother] input.y:25.8-14: warning: useless associativity for ORDINAL, use %precedence [-Wprecedence]
input.y:30.8-11: warning: useless associativity for LAST [-Wother] input.y:30.8-11: warning: useless associativity for LAST, use %precedence [-Wprecedence]
input.y:31.8-9: warning: useless associativity for UP [-Wother] input.y:31.8-9: warning: useless associativity for UP, use %precedence [-Wprecedence]
input.y:32.8-11: warning: useless associativity for DOWN [-Wother] input.y:32.8-11: warning: useless associativity for DOWN, use %precedence [-Wprecedence]
input.y:35.8-10: warning: useless associativity for BOX [-Wother] input.y:35.8-10: warning: useless associativity for BOX, use %precedence [-Wprecedence]
input.y:36.8-13: warning: useless associativity for CIRCLE [-Wother] input.y:36.8-13: warning: useless associativity for CIRCLE, use %precedence [-Wprecedence]
input.y:37.8-14: warning: useless associativity for ELLIPSE [-Wother] input.y:37.8-14: warning: useless associativity for ELLIPSE, use %precedence [-Wprecedence]
input.y:38.8-10: warning: useless associativity for ARC [-Wother] input.y:38.8-10: warning: useless associativity for ARC, use %precedence [-Wprecedence]
input.y:39.8-11: warning: useless associativity for LINE [-Wother] input.y:39.8-11: warning: useless associativity for LINE, use %precedence [-Wprecedence]
input.y:40.8-12: warning: useless associativity for ARROW [-Wother] input.y:40.8-12: warning: useless associativity for ARROW, use %precedence [-Wprecedence]
input.y:42.8-13: warning: useless associativity for SPLINE [-Wother] input.y:42.8-13: warning: useless associativity for SPLINE, use %precedence [-Wprecedence]
input.y:43.8-13: warning: useless associativity for HEIGHT [-Wother] input.y:43.8-13: warning: useless associativity for HEIGHT, use %precedence [-Wprecedence]
input.y:44.8-13: warning: useless associativity for RADIUS [-Wother] input.y:44.8-13: warning: useless associativity for RADIUS, use %precedence [-Wprecedence]
input.y:45.8-12: warning: useless associativity for WIDTH [-Wother] input.y:45.8-12: warning: useless associativity for WIDTH, use %precedence [-Wprecedence]
input.y:46.8-15: warning: useless associativity for DIAMETER [-Wother] input.y:46.8-15: warning: useless associativity for DIAMETER, use %precedence [-Wprecedence]
input.y:47.8-11: warning: useless associativity for FROM [-Wother] input.y:47.8-11: warning: useless associativity for FROM, use %precedence [-Wprecedence]
input.y:48.8-9: warning: useless associativity for TO [-Wother] input.y:48.8-9: warning: useless associativity for TO, use %precedence [-Wprecedence]
input.y:49.8-9: warning: useless associativity for AT [-Wother] input.y:49.8-9: warning: useless associativity for AT, use %precedence [-Wprecedence]
input.y:53.8-12: warning: useless associativity for SOLID [-Wother] input.y:53.8-12: warning: useless precedence and associativity for SOLID [-Wprecedence]
input.y:54.8-13: warning: useless associativity for DOTTED [-Wother] input.y:54.8-13: warning: useless associativity for DOTTED, use %precedence [-Wprecedence]
input.y:55.8-13: warning: useless associativity for DASHED [-Wother] input.y:55.8-13: warning: useless associativity for DASHED, use %precedence [-Wprecedence]
input.y:56.8-11: warning: useless associativity for CHOP [-Wother] input.y:56.8-11: warning: useless associativity for CHOP, use %precedence [-Wprecedence]
input.y:59.8-12: warning: useless associativity for LJUST [-Wother] input.y:59.8-12: warning: useless precedence and associativity for LJUST [-Wprecedence]
input.y:60.8-12: warning: useless associativity for RJUST [-Wother] input.y:60.8-12: warning: useless precedence and associativity for RJUST [-Wprecedence]
input.y:61.8-12: warning: useless associativity for ABOVE [-Wother] input.y:61.8-12: warning: useless precedence and associativity for ABOVE [-Wprecedence]
input.y:62.8-12: warning: useless associativity for BELOW [-Wother] input.y:62.8-12: warning: useless precedence and associativity for BELOW [-Wprecedence]
input.y:63.8-9: warning: useless associativity for OF [-Wother] input.y:63.8-9: warning: useless associativity for OF, use %precedence [-Wprecedence]
input.y:66.8-14: warning: useless associativity for BETWEEN [-Wother] input.y:66.8-14: warning: useless associativity for BETWEEN, use %precedence [-Wprecedence]
input.y:67.8-10: warning: useless associativity for AND [-Wother] input.y:67.8-10: warning: useless associativity for AND, use %precedence [-Wprecedence]
input.y:68.8-11: warning: useless associativity for HERE [-Wother] input.y:68.8-11: warning: useless associativity for HERE, use %precedence [-Wprecedence]
input.y:69.8-12: warning: useless associativity for DOT_N [-Wother] input.y:69.8-12: warning: useless associativity for DOT_N, use %precedence [-Wprecedence]
input.y:70.8-12: warning: useless associativity for DOT_E [-Wother] input.y:70.8-12: warning: useless associativity for DOT_E, use %precedence [-Wprecedence]
input.y:71.8-12: warning: useless associativity for DOT_W [-Wother] input.y:71.8-12: warning: useless associativity for DOT_W, use %precedence [-Wprecedence]
input.y:72.8-12: warning: useless associativity for DOT_S [-Wother] input.y:72.8-12: warning: useless associativity for DOT_S, use %precedence [-Wprecedence]
input.y:73.8-13: warning: useless associativity for DOT_NE [-Wother] input.y:73.8-13: warning: useless associativity for DOT_NE, use %precedence [-Wprecedence]
input.y:74.8-13: warning: useless associativity for DOT_SE [-Wother] input.y:74.8-13: warning: useless associativity for DOT_SE, use %precedence [-Wprecedence]
input.y:75.8-13: warning: useless associativity for DOT_NW [-Wother] input.y:75.8-13: warning: useless associativity for DOT_NW, use %precedence [-Wprecedence]
input.y:76.8-13: warning: useless associativity for DOT_SW [-Wother] input.y:76.8-13: warning: useless associativity for DOT_SW, use %precedence [-Wprecedence]
input.y:77.8-12: warning: useless associativity for DOT_C [-Wother] input.y:77.8-12: warning: useless associativity for DOT_C, use %precedence [-Wprecedence]
input.y:78.8-16: warning: useless associativity for DOT_START [-Wother] input.y:78.8-16: warning: useless associativity for DOT_START, use %precedence [-Wprecedence]
input.y:79.8-14: warning: useless associativity for DOT_END [-Wother] input.y:79.8-14: warning: useless associativity for DOT_END, use %precedence [-Wprecedence]
input.y:85.8-10: warning: useless associativity for SIN [-Wother] input.y:85.8-10: warning: useless associativity for SIN, use %precedence [-Wprecedence]
input.y:86.8-10: warning: useless associativity for COS [-Wother] input.y:86.8-10: warning: useless associativity for COS, use %precedence [-Wprecedence]
input.y:87.8-12: warning: useless associativity for ATAN2 [-Wother] input.y:87.8-12: warning: useless associativity for ATAN2, use %precedence [-Wprecedence]
input.y:88.8-10: warning: useless associativity for LOG [-Wother] input.y:88.8-10: warning: useless associativity for LOG, use %precedence [-Wprecedence]
input.y:89.8-10: warning: useless associativity for EXP [-Wother] input.y:89.8-10: warning: useless associativity for EXP, use %precedence [-Wprecedence]
input.y:90.8-11: warning: useless associativity for SQRT [-Wother] input.y:90.8-11: warning: useless associativity for SQRT, use %precedence [-Wprecedence]
input.y:91.8-12: warning: useless associativity for K_MAX [-Wother] input.y:91.8-12: warning: useless associativity for K_MAX, use %precedence [-Wprecedence]
input.y:92.8-12: warning: useless associativity for K_MIN [-Wother] input.y:92.8-12: warning: useless associativity for K_MIN, use %precedence [-Wprecedence]
input.y:93.8-10: warning: useless associativity for INT [-Wother] input.y:93.8-10: warning: useless associativity for INT, use %precedence [-Wprecedence]
input.y:94.8-11: warning: useless associativity for RAND [-Wother] input.y:94.8-11: warning: useless associativity for RAND, use %precedence [-Wprecedence]
input.y:95.8-12: warning: useless associativity for SRAND [-Wother] input.y:95.8-12: warning: useless associativity for SRAND, use %precedence [-Wprecedence]
input.y:98.8-10: warning: useless associativity for TOP [-Wother] input.y:98.8-10: warning: useless associativity for TOP, use %precedence [-Wprecedence]
input.y:99.8-13: warning: useless associativity for BOTTOM [-Wother] input.y:99.8-13: warning: useless associativity for BOTTOM, use %precedence [-Wprecedence]
input.y:100.8-12: warning: useless associativity for UPPER [-Wother] input.y:100.8-12: warning: useless associativity for UPPER, use %precedence [-Wprecedence]
input.y:101.8-12: warning: useless associativity for LOWER [-Wother] input.y:101.8-12: warning: useless associativity for LOWER, use %precedence [-Wprecedence]
input.y:116.8-18: warning: useless associativity for LEFT_CORNER [-Wother] input.y:116.8-18: warning: useless associativity for LEFT_CORNER, use %precedence [-Wprecedence]
input.y:117.8-19: warning: useless associativity for RIGHT_CORNER [-Wother] input.y:117.8-19: warning: useless associativity for RIGHT_CORNER, use %precedence [-Wprecedence]
input.y:118.8-12: warning: useless associativity for NORTH [-Wother] input.y:118.8-12: warning: useless associativity for NORTH, use %precedence [-Wprecedence]
input.y:119.8-12: warning: useless associativity for SOUTH [-Wother] input.y:119.8-12: warning: useless associativity for SOUTH, use %precedence [-Wprecedence]
input.y:120.8-11: warning: useless associativity for EAST [-Wother] input.y:120.8-11: warning: useless associativity for EAST, use %precedence [-Wprecedence]
input.y:121.8-11: warning: useless associativity for WEST [-Wother] input.y:121.8-11: warning: useless associativity for WEST, use %precedence [-Wprecedence]
input.y:122.8-13: warning: useless associativity for CENTER [-Wother] input.y:122.8-13: warning: useless associativity for CENTER, use %precedence [-Wprecedence]
input.y:123.8-10: warning: useless associativity for END [-Wother] input.y:123.8-10: warning: useless associativity for END, use %precedence [-Wprecedence]
input.y:124.8-12: warning: useless associativity for START [-Wother] input.y:124.8-12: warning: useless associativity for START, use %precedence [-Wprecedence]
input.y:127.8-11: warning: useless associativity for PLOT [-Wother] input.y:127.8-11: warning: useless associativity for PLOT, use %precedence [-Wprecedence]
input.y:128.8-16: warning: useless associativity for THICKNESS [-Wother] input.y:128.8-16: warning: useless associativity for THICKNESS, use %precedence [-Wprecedence]
input.y:129.8-11: warning: useless associativity for FILL [-Wother] input.y:129.8-11: warning: useless associativity for FILL, use %precedence [-Wprecedence]
input.y:130.8-14: warning: useless associativity for COLORED [-Wother] input.y:130.8-14: warning: useless precedence and associativity for COLORED [-Wprecedence]
input.y:131.8-15: warning: useless associativity for OUTLINED [-Wother] input.y:131.8-15: warning: useless precedence and associativity for OUTLINED [-Wprecedence]
input.y:134.8-14: warning: useless associativity for SPRINTF [-Wother] input.y:134.8-14: warning: useless associativity for SPRINTF, use %precedence [-Wprecedence]
input.y:137.7-9: warning: useless associativity for '.' [-Wother] input.y:137.7-9: warning: useless associativity for '.', use %precedence [-Wprecedence]
input.y:156.23-25: warning: useless associativity for '(' [-Wother] input.y:156.23-25: warning: useless associativity for '(', use %precedence [-Wprecedence]
input.y:157.20-22: warning: useless associativity for '`' [-Wother] input.y:157.20-22: warning: useless associativity for '`', use %precedence [-Wprecedence]
input.y:159.48-50: warning: useless associativity for '@<:@' [-Wother] input.y:159.48-50: warning: useless associativity for '@<:@', use %precedence [-Wprecedence]
input.y:170.7-9: warning: useless associativity for ',' [-Wother] input.y:170.7-9: warning: useless associativity for ',', use %precedence [-Wprecedence]
input.y:181.8-10: warning: useless associativity for '!' [-Wother] input.y:181.8-10: warning: useless associativity for '!', use %precedence [-Wprecedence]
]], ]],
dnl LAST-STATE dnl LAST-STATE

2
tests/local.at
View File

@@ -962,7 +962,7 @@ yylex (void)
m4_if(m4_index(m4_quote($3), [no-xml]), -1, m4_if(m4_index(m4_quote($3), [no-xml]), -1,
[AT_BISON_CHECK], [AT_BISON_CHECK],
[AT_BISON_CHECK_NO_XML])([[--report=all --defines -o input.c input.y]], [AT_BISON_CHECK_NO_XML])([[-Wall --report=all --defines -o input.c input.y]],
[0], [], m4_dquote($7)) [0], [], m4_dquote($7))
m4_if(m4_index(m4_quote($3), [last-state]), -1, m4_if(m4_index(m4_quote($3), [last-state]), -1,

10
tests/regression.at
View File

@@ -377,9 +377,9 @@ exp: ;
%% %%
]]) ]])
AT_BISON_CHECK([-v -o input.c input.y], 0, [], AT_BISON_CHECK([-v -Wall -o input.c input.y], 0, [],
[[input.y:1.29-32: warning: useless associativity for "||" [-Wother] [[input.y:1.29-32: warning: useless precedence and associativity for "||" [-Wprecedence]
input.y:2.29-32: warning: useless associativity for "<=" [-Wother] input.y:2.29-32: warning: useless precedence and associativity for "<=" [-Wprecedence]
]]) ]])
AT_CLEANUP AT_CLEANUP
@@ -1147,10 +1147,10 @@ sr_conflict:
]]) ]])
AT_BISON_OPTION_POPDEFS AT_BISON_OPTION_POPDEFS
AT_BISON_CHECK([[-o input.c input.y]], [[0]],, AT_BISON_CHECK([[-Wall -o input.c input.y]], [[0]],,
[[input.y:24.5-19: warning: rule useless in parser due to conflicts: start: start [-Wother] [[input.y:24.5-19: warning: rule useless in parser due to conflicts: start: start [-Wother]
input.y:28.5-19: warning: rule useless in parser due to conflicts: sr_conflict: TK2 "tok alias" [-Wother] input.y:28.5-19: warning: rule useless in parser due to conflicts: sr_conflict: TK2 "tok alias" [-Wother]
input.y:18.7-9: warning: useless associativity for TK1 [-Wother] input.y:18.7-9: warning: useless precedence and associativity for TK1 [-Wprecedence]
]]) ]])
AT_COMPILE([[input]]) AT_COMPILE([[input]])
AT_PARSER_CHECK([[./input]]) AT_PARSER_CHECK([[./input]])