`-------------------------------------------------------------------*/
static symbol **symbols_sorted = NULL;
+static symbol **semantic_types_sorted = NULL;
/*------------------------.
| Distinguished symbols. |
symbol *startsymbol = NULL;
location startsymbol_location;
-/*---------------------------------------.
-| Default %destructor's and %printer's. |
-`---------------------------------------*/
-
-static code_props default_tagged_destructor = CODE_PROPS_NONE_INIT;
-static code_props default_tagless_destructor = CODE_PROPS_NONE_INIT;
-static code_props default_tagged_printer = CODE_PROPS_NONE_INIT;
-static code_props default_tagless_printer = CODE_PROPS_NONE_INIT;
/*---------------------------------.
| Create a new symbol, named TAG. |
/* If the tag is not a string (starts with a double quote), check
that it is valid for Yacc. */
- if (tag[0] != '\"' && tag[0] != '\'' && mbschr (tag, '-'))
- yacc_at (loc, _("POSIX Yacc forbids dashes in symbol names: %s"),
- tag);
+ if (tag[0] != '\"' && tag[0] != '\'' && strchr (tag, '-'))
+ complain_at (loc, Wyacc,
+ _("POSIX Yacc forbids dashes in symbol names: %s"), tag);
res->tag = tag;
res->location = loc;
res->type_name = NULL;
- code_props_none_init (&res->destructor);
- code_props_none_init (&res->printer);
+ for (int i = 0; i < CODE_PROPS_SIZE; ++i)
+ code_props_none_init (&res->props[i]);
res->number = NUMBER_UNDEFINED;
res->prec = 0;
res->alias = NULL;
res->class = unknown_sym;
- res->declared = false;
+ res->status = undeclared;
if (nsyms == SYMBOL_NUMBER_MAXIMUM)
- fatal (_("too many symbols in input grammar (limit is %d)"),
- SYMBOL_NUMBER_MAXIMUM);
+ complain (fatal, _("too many symbols in input grammar (limit is %d)"),
+ SYMBOL_NUMBER_MAXIMUM);
nsyms++;
return res;
}
+char const *
+code_props_type_string (code_props_type kind)
+{
+ switch (kind)
+ {
+ case destructor:
+ return "%destructor";
+ case printer:
+ return "%printer";
+ }
+ assert (0);
+}
+
/*----------------------------------------.
| Create a new semantic type, named TAG. |
`----------------------------------------*/
static semantic_type *
-semantic_type_new (uniqstr tag)
+semantic_type_new (uniqstr tag, const location *loc)
{
semantic_type *res = xmalloc (sizeof *res);
uniqstr_assert (tag);
res->tag = tag;
- code_props_none_init (&res->destructor);
- code_props_none_init (&res->printer);
+ if (loc)
+ res->location = *loc;
+ for (int i = 0; i < CODE_PROPS_SIZE; ++i)
+ code_props_none_init (&res->props[i]);
return res;
}
| Print a symbol. |
`-----------------*/
-#define SYMBOL_ATTR_PRINT(Attr) \
- if (s->Attr) \
+#define SYMBOL_ATTR_PRINT(Attr) \
+ if (s->Attr) \
fprintf (f, " %s { %s }", #Attr, s->Attr)
-#define SYMBOL_CODE_PRINT(Attr) \
- if (s->Attr.code) \
- fprintf (f, " %s { %s }", #Attr, s->Attr.code)
+#define SYMBOL_CODE_PRINT(Attr) \
+ if (s->props[Attr].code) \
+ fprintf (f, " %s { %s }", #Attr, s->props[Attr].code)
void
-symbol_print (symbol *s, FILE *f)
+symbol_print (symbol const *s, FILE *f)
{
if (s)
{
#undef SYMBOL_ATTR_PRINT
#undef SYMBOL_CODE_PRINT
+
+/*----------------------------------.
+| Whether S is a valid identifier. |
+`----------------------------------*/
+
+static bool
+is_identifier (uniqstr s)
+{
+ static char const alphanum[26 + 26 + 1 + 10] =
+ "abcdefghijklmnopqrstuvwxyz"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "_"
+ "0123456789";
+ if (!s || ! memchr (alphanum, *s, sizeof alphanum - 10))
+ return false;
+ for (++s; *s; ++s)
+ if (! memchr (alphanum, *s, sizeof alphanum))
+ return false;
+ return true;
+}
+
+
+/*-----------------------------------------------.
+| Get the identifier associated to this symbol. |
+`-----------------------------------------------*/
+uniqstr
+symbol_id_get (symbol const *sym)
+{
+ aver (sym->user_token_number != USER_NUMBER_HAS_STRING_ALIAS);
+ if (sym->alias)
+ sym = sym->alias;
+ return is_identifier (sym->tag) ? sym->tag : 0;
+}
+
+
/*------------------------------------------------------------------.
| Complain that S's WHAT is redeclared at SECOND, and was first set |
| at FIRST. |
location second)
{
unsigned i = 0;
- complain_at_indent (second, &i, _("%s redeclaration for %s"), what, s->tag);
+ complain_at_indent (second, complaint, &i,
+ _("%s redeclaration for %s"), what, s->tag);
i += SUB_INDENT;
- complain_at_indent (first, &i, _("previous declaration"));
+ complain_at_indent (first, complaint, &i,
+ _("previous declaration"));
}
static void
location second)
{
unsigned i = 0;
- complain_at_indent (second, &i, _("%s redeclaration for <%s>"), what, s->tag);
+ complain_at_indent (second, complaint, &i,
+ _("%s redeclaration for <%s>"), what, s->tag);
i += SUB_INDENT;
- complain_at_indent (first, &i, _("previous declaration"));
+ complain_at_indent (first, complaint, &i,
+ _("previous declaration"));
}
if (type_name)
{
if (sym->type_name)
- symbol_redeclaration (sym, "%type", sym->type_location, loc);
+ symbol_redeclaration (sym, "%type", sym->type_location, loc);
uniqstr_assert (type_name);
sym->type_name = type_name;
sym->type_location = loc;
}
}
-/*-----------------------------------------.
-| Set the DESTRUCTOR associated with SYM. |
-`-----------------------------------------*/
+/*--------------------------------------------------------.
+| Set the DESTRUCTOR or PRINTER associated with the SYM. |
+`--------------------------------------------------------*/
void
-symbol_destructor_set (symbol *sym, code_props const *destructor)
+symbol_code_props_set (symbol *sym, code_props_type kind,
+ code_props const *code)
{
- if (sym->destructor.code)
- symbol_redeclaration (sym, "%destructor", sym->destructor.location,
- destructor->location);
- sym->destructor = *destructor;
+ if (sym->props[kind].code)
+ symbol_redeclaration (sym, code_props_type_string (kind),
+ sym->props[kind].location,
+ code->location);
+ sym->props[kind] = *code;
}
-/*------------------------------------------.
-| Set the DESTRUCTOR associated with TYPE. |
-`------------------------------------------*/
+/*-----------------------------------------------------.
+| Set the DESTRUCTOR or PRINTER associated with TYPE. |
+`-----------------------------------------------------*/
void
-semantic_type_destructor_set (semantic_type *type,
- code_props const *destructor)
+semantic_type_code_props_set (semantic_type *type,
+ code_props_type kind,
+ code_props const *code)
{
- if (type->destructor.code)
- semantic_type_redeclaration (type, "%destructor",
- type->destructor.location,
- destructor->location);
- type->destructor = *destructor;
+ if (type->props[kind].code)
+ semantic_type_redeclaration (type, code_props_type_string (kind),
+ type->props[kind].location,
+ code->location);
+ type->props[kind] = *code;
}
-/*---------------------------------------.
-| Get the computed %destructor for SYM. |
-`---------------------------------------*/
+/*---------------------------------------------------.
+| Get the computed %destructor or %printer for SYM. |
+`---------------------------------------------------*/
-code_props const *
-symbol_destructor_get (symbol const *sym)
+code_props *
+symbol_code_props_get (symbol *sym, code_props_type kind)
{
- /* Per-symbol %destructor. */
- if (sym->destructor.code)
- return &sym->destructor;
+ /* Per-symbol code props. */
+ if (sym->props[kind].code)
+ return &sym->props[kind];
- /* Per-type %destructor. */
+ /* Per-type code props. */
if (sym->type_name)
{
- code_props const *destructor =
- &semantic_type_get (sym->type_name)->destructor;
- if (destructor->code)
- return destructor;
+ code_props *code =
+ &semantic_type_get (sym->type_name, NULL)->props[kind];
+ if (code->code)
+ return code;
}
- /* Apply default %destructor's only to user-defined symbols. */
- if (sym->tag[0] == '$' || sym == errtoken)
- return &code_props_none;
-
- if (sym->type_name)
- return &default_tagged_destructor;
- return &default_tagless_destructor;
-}
-
-/*--------------------------------------.
-| Set the PRINTER associated with SYM. |
-`--------------------------------------*/
-
-void
-symbol_printer_set (symbol *sym, code_props const *printer)
-{
- if (sym->printer.code)
- symbol_redeclaration (sym, "%printer",
- sym->printer.location, printer->location);
- sym->printer = *printer;
-}
-
-/*---------------------------------------.
-| Set the PRINTER associated with TYPE. |
-`---------------------------------------*/
-
-void
-semantic_type_printer_set (semantic_type *type, code_props const *printer)
-{
- if (type->printer.code)
- semantic_type_redeclaration (type, "%printer",
- type->printer.location, printer->location);
- type->printer = *printer;
-}
-
-/*------------------------------------.
-| Get the computed %printer for SYM. |
-`------------------------------------*/
-
-code_props const *
-symbol_printer_get (symbol const *sym)
-{
- /* Per-symbol %printer. */
- if (sym->printer.code)
- return &sym->printer;
-
- /* Per-type %printer. */
- if (sym->type_name)
+ /* Apply default code props's only to user-defined symbols. */
+ if (sym->tag[0] != '$' && sym != errtoken)
{
- code_props const *printer = &semantic_type_get (sym->type_name)->printer;
- if (printer->code)
- return printer;
+ code_props *code =
+ &semantic_type_get (sym->type_name ? "*" : "", NULL)->props[kind];
+ if (code->code)
+ return code;
}
-
- /* Apply the default %printer only to user-defined symbols. */
- if (sym->tag[0] == '$' || sym == errtoken)
- return &code_props_none;
-
- if (sym->type_name)
- return &default_tagged_printer;
- return &default_tagless_printer;
+ return &code_props_none;
}
/*-----------------------------------------------------------------.
if (a != undef_assoc)
{
if (sym->prec != 0)
- symbol_redeclaration (sym, assoc_to_string (a), sym->prec_location,
+ symbol_redeclaration (sym, assoc_to_string (a), sym->prec_location,
loc);
sym->prec = prec;
sym->assoc = a;
void
symbol_class_set (symbol *sym, symbol_class class, location loc, bool declaring)
{
+ bool warned = false;
if (sym->class != unknown_sym && sym->class != class)
{
- complain_at (loc, _("symbol %s redefined"), sym->tag);
- sym->declared = false;
+ complain_at (loc, complaint, _("symbol %s redefined"), sym->tag);
+ // Don't report both "redefined" and "redeclared".
+ warned = true;
}
if (class == nterm_sym && sym->class != nterm_sym)
if (declaring)
{
- if (sym->declared)
- warn_at (loc, _("symbol %s redeclared"), sym->tag);
- sym->declared = true;
+ if (sym->status == declared && !warned)
+ complain_at (loc, Wother, _("symbol %s redeclared"), sym->tag);
+ sym->status = declared;
}
}
user_token_numberp = &sym->alias->user_token_number;
if (*user_token_numberp != USER_NUMBER_UNDEFINED
&& *user_token_numberp != user_token_number)
- complain_at (loc, _("redefining user token number of %s"), sym->tag);
+ complain_at (loc, complaint, _("redefining user token number of %s"),
+ sym->tag);
*user_token_numberp = user_token_number;
/* User defined $end token? */
{
endtoken = sym;
/* It is always mapped to 0, so it was already counted in
- NTOKENS. */
+ NTOKENS. */
if (endtoken->number != NUMBER_UNDEFINED)
--ntokens;
endtoken->number = 0;
{
if (sym->class == unknown_sym)
{
- complain_at
- (sym->location,
- _("symbol %s is used, but is not defined as a token and has no rules"),
- sym->tag);
+ assert (sym->status != declared);
+ complain_at (sym->location,
+ sym->status == needed ? complaint : Wother,
+ _("symbol %s is used, but is not defined as a token"
+ " and has no rules"),
+ sym->tag);
sym->class = nterm_sym;
sym->number = nvars++;
}
+ for (int i = 0; i < 2; ++i)
+ symbol_code_props_get (sym, i)->is_used = true;
+
+ /* Set the semantic type status associated to the current symbol to
+ 'declared' so that we could check semantic types unnecessary uses. */
+ if (sym->type_name)
+ {
+ semantic_type *sem_type = semantic_type_get (sym->type_name, NULL);
+ if (sem_type)
+ sem_type->status = declared;
+ }
+
+ return true;
+}
+
+static inline bool
+semantic_type_check_defined (semantic_type *sem_type)
+{
+ // <*> and <> do not have to be "declared".
+ if (sem_type->status == declared
+ || !*sem_type->tag
+ || STREQ(sem_type->tag, "*"))
+ {
+ for (int i = 0; i < 2; ++i)
+ if (sem_type->props[i].kind != CODE_PROPS_NONE
+ && ! sem_type->props[i].is_used)
+ complain_at (sem_type->location, Wother,
+ _("useless %s for type <%s>"),
+ code_props_type_string (i), sem_type->tag);
+ }
+ else
+ complain_at (sem_type->location, Wother,
+ _("type <%s> is used, but is not associated to any symbol"),
+ sem_type->tag);
+
return true;
}
return symbol_check_defined (sym);
}
+static bool
+semantic_type_check_defined_processor (void *sem_type,
+ void *null ATTRIBUTE_UNUSED)
+{
+ return semantic_type_check_defined (sem_type);
+}
+
void
symbol_make_alias (symbol *sym, symbol *str, location loc)
{
if (str->alias)
- warn_at (loc, _("symbol %s used more than once as a literal string"),
- str->tag);
+ complain_at (loc, Wother,
+ _("symbol %s used more than once as a literal string"), str->tag);
else if (sym->alias)
- warn_at (loc, _("symbol %s given more than one literal string"),
- sym->tag);
+ complain_at (loc, Wother,
+ _("symbol %s given more than one literal string"), sym->tag);
else
{
str->class = token_sym;
if (str->type_name != sym->type_name)
{
if (str->type_name)
- symbol_type_set (sym, str->type_name, str->type_location);
+ symbol_type_set (sym, str->type_name, str->type_location);
else
- symbol_type_set (str, sym->type_name, sym->type_location);
+ symbol_type_set (str, sym->type_name, sym->type_location);
}
- if (str->destructor.code || sym->destructor.code)
- {
- if (str->destructor.code)
- symbol_destructor_set (sym, &str->destructor);
- else
- symbol_destructor_set (str, &sym->destructor);
- }
-
- if (str->printer.code || sym->printer.code)
- {
- if (str->printer.code)
- symbol_printer_set (sym, &str->printer);
- else
- symbol_printer_set (str, &sym->printer);
- }
+ for (int i = 0; i < CODE_PROPS_SIZE; ++i)
+ if (str->props[i].code)
+ symbol_code_props_set (sym, i, &str->props[i]);
+ else if (sym->props[i].code)
+ symbol_code_props_set (str, i, &sym->props[i]);
if (sym->prec || str->prec)
{
if (str->prec)
- symbol_precedence_set (sym, str->prec, str->assoc,
- str->prec_location);
+ symbol_precedence_set (sym, str->prec, str->assoc,
+ str->prec_location);
else
- symbol_precedence_set (str, sym->prec, sym->assoc,
- sym->prec_location);
+ symbol_precedence_set (str, sym->prec, sym->assoc,
+ sym->prec_location);
}
}
static bool
symbol_check_alias_consistency_processor (void *this,
- void *null ATTRIBUTE_UNUSED)
+ void *null ATTRIBUTE_UNUSED)
{
symbol_check_alias_consistency (this);
return true;
first = second;
second = tmp;
}
- complain_at_indent (second->location, &i,
+ complain_at_indent (second->location, complaint, &i,
_("user token number %d redeclaration for %s"),
num, second->tag);
- complain_at_indent (first->location, &i,
+ i += SUB_INDENT;
+ complain_at_indent (first->location, complaint, &i,
_("previous declaration for %s"),
first->tag);
}
{
/* A token which translation has already been set? */
if (token_translations[this->user_token_number] != undeftoken->number)
- user_token_number_redeclaration
+ user_token_number_redeclaration
(this->user_token_number,
symbols[token_translations[this->user_token_number]],
this);
symbols_new (void)
{
symbol_table = hash_initialize (HT_INITIAL_CAPACITY,
- NULL,
- hash_symbol_hasher,
- hash_symbol_comparator,
- free);
+ NULL,
+ hash_symbol_hasher,
+ hash_symbol_comparator,
+ free);
semantic_type_table = hash_initialize (HT_INITIAL_CAPACITY,
- NULL,
- hash_semantic_type_hasher,
- hash_semantic_type_comparator,
- free);
+ NULL,
+ hash_semantic_type_hasher,
+ hash_semantic_type_comparator,
+ free);
}
`-----------------------------------------------------------------------*/
semantic_type *
-semantic_type_from_uniqstr (const uniqstr key)
+semantic_type_from_uniqstr (const uniqstr key, const location *loc)
{
semantic_type probe;
semantic_type *entry;
if (!entry)
{
/* First insertion in the hash. */
- entry = semantic_type_new (key);
+ entry = semantic_type_new (key, loc);
if (!hash_insert (semantic_type_table, entry))
xalloc_die ();
}
`-----------------------------------------------------------------------*/
semantic_type *
-semantic_type_get (const char *key)
+semantic_type_get (const char *key, const location *loc)
{
- return semantic_type_from_uniqstr (uniqstr_new (key));
+ return semantic_type_from_uniqstr (uniqstr_new (key), loc);
}
}
static void
-symbols_do (Hash_processor processor, void *processor_data)
+symbols_do (Hash_processor processor, void *processor_data,
+ struct hash_table *table, symbol **sorted)
{
- size_t count = hash_get_n_entries (symbol_table);
- if (!symbols_sorted)
+ size_t count = hash_get_n_entries (table);
+ if (!sorted)
{
- symbols_sorted = xnmalloc (count, sizeof *symbols_sorted);
- hash_get_entries (symbol_table, (void**)symbols_sorted, count);
- qsort (symbols_sorted, count, sizeof *symbols_sorted,
- symbols_cmp_qsort);
+ sorted = xnmalloc (count, sizeof *sorted);
+ hash_get_entries (table, (void**)sorted, count);
+ qsort (sorted, count, sizeof *sorted, symbols_cmp_qsort);
}
{
size_t i;
for (i = 0; i < count; ++i)
- processor (symbols_sorted[i], processor_data);
+ processor (sorted[i], processor_data);
}
}
void
symbols_check_defined (void)
{
- symbols_do (symbol_check_defined_processor, NULL);
+ symbols_do (symbol_check_defined_processor, NULL,
+ symbol_table, symbols_sorted);
+ symbols_do (semantic_type_check_defined_processor, NULL,
+ semantic_type_table, semantic_types_sorted);
}
/*------------------------------------------------------------------.
{
symbol *this = symbols[i];
if (this->user_token_number != USER_NUMBER_UNDEFINED)
- {
- if (this->user_token_number > max_user_token_number)
- max_user_token_number = this->user_token_number;
- if (this->user_token_number == 256)
- num_256_available_p = false;
- }
+ {
+ if (this->user_token_number > max_user_token_number)
+ max_user_token_number = this->user_token_number;
+ if (this->user_token_number == 256)
+ num_256_available_p = false;
+ }
}
/* If 256 is not used, assign it to error, to follow POSIX. */
{
symbol *this = symbols[i];
if (this->user_token_number == USER_NUMBER_UNDEFINED)
- this->user_token_number = ++max_user_token_number;
+ this->user_token_number = ++max_user_token_number;
if (this->user_token_number > max_user_token_number)
- max_user_token_number = this->user_token_number;
+ max_user_token_number = this->user_token_number;
}
token_translations = xnmalloc (max_user_token_number + 1,
- sizeof *token_translations);
+ sizeof *token_translations);
- /* Initialize all entries for literal tokens to 2, the internal
- token number for $undefined, which represents all invalid inputs.
- */
+ /* Initialize all entries for literal tokens to the internal token
+ number for $undefined, which represents all invalid inputs. */
for (i = 0; i < max_user_token_number + 1; i++)
token_translations[i] = undeftoken->number;
- symbols_do (symbol_translation_processor, NULL);
+ symbols_do (symbol_translation_processor, NULL,
+ symbol_table, symbols_sorted);
}
void
symbols_pack (void)
{
- symbols_do (symbol_check_alias_consistency_processor, NULL);
+ symbols_do (symbol_check_alias_consistency_processor, NULL,
+ symbol_table, symbols_sorted);
symbols = xcalloc (nsyms, sizeof *symbols);
- symbols_do (symbol_pack_processor, NULL);
+ symbols_do (symbol_pack_processor, NULL, symbol_table, symbols_sorted);
/* Aliases leave empty slots in symbols, so remove them. */
{
symbols_token_translations_init ();
if (startsymbol->class == unknown_sym)
- fatal_at (startsymbol_location,
- _("the start symbol %s is undefined"),
- startsymbol->tag);
+ complain_at (startsymbol_location, fatal,
+ _("the start symbol %s is undefined"),
+ startsymbol->tag);
else if (startsymbol->class == token_sym)
- fatal_at (startsymbol_location,
- _("the start symbol %s is a token"),
- startsymbol->tag);
-}
-
-
-/*--------------------------------------------------.
-| Set default tagged/tagless %destructor/%printer. |
-`--------------------------------------------------*/
-
-void
-default_tagged_destructor_set (code_props const *destructor)
-{
- if (default_tagged_destructor.code)
- {
- unsigned i = 0;
- complain_at_indent (destructor->location, &i,
- _("redeclaration for default tagged %%destructor"));
- i += SUB_INDENT;
- complain_at_indent (default_tagged_destructor.location, &i,
- _("previous declaration"));
- }
- default_tagged_destructor = *destructor;
-}
-
-void
-default_tagless_destructor_set (code_props const *destructor)
-{
- if (default_tagless_destructor.code)
- {
- unsigned i = 0;
- complain_at_indent (destructor->location, &i,
- _("redeclaration for default tagless %%destructor"));
- i += SUB_INDENT;
- complain_at_indent (default_tagless_destructor.location, &i,
- _("previous declaration"));
- }
- default_tagless_destructor = *destructor;
-}
-
-void
-default_tagged_printer_set (code_props const *printer)
-{
- if (default_tagged_printer.code)
- {
- unsigned i = 0;
- complain_at_indent (printer->location, &i,
- _("redeclaration for default tagged %%printer"));
- i += SUB_INDENT;
- complain_at_indent (default_tagged_printer.location, &i,
- _("previous declaration"));
- }
- default_tagged_printer = *printer;
-}
-
-void
-default_tagless_printer_set (code_props const *printer)
-{
- if (default_tagless_printer.code)
- {
- unsigned i = 0;
- complain_at_indent (printer->location, &i,
- _("redeclaration for default tagless %%printer"));
- i += SUB_INDENT;
- complain_at_indent (default_tagless_printer.location, &i,
- _("previous declaration"));
- }
- default_tagless_printer = *printer;
+ complain_at (startsymbol_location, fatal,
+ _("the start symbol %s is a token"),
+ startsymbol->tag);
}
AT_BISON_CHECK([input.y], [1], [],
[[input.y:5.12-13: error: $$ for the midrule at $2 of 'exp' has no declared type
input.y:5.24-25: error: $2 of 'exp' has no declared type
-input.y:5.6-32: warning: type clash on default action: <bar> != <>
-input.y:6.6-8: warning: type clash on default action: <bar> != <>
-input.y:7.5: warning: empty rule for typed nonterminal, and no action
+input.y:5.6-32: warning: type clash on default action: <bar> != <> [-Wother]
+input.y:6.6-8: warning: type clash on default action: <bar> != <> [-Wother]
+input.y:7.5: warning: empty rule for typed nonterminal, and no action [-Wother]
]])
AT_CLEANUP
# --------------------------------
# Generate the token, type, and destructor
# declarations for the unused values tests.
-
m4_define([_AT_UNUSED_VALUES_DECLARATIONS],
[[[%token <integer> INT;
%type <integer> a b c d e f g h i j k l;
# AT_CHECK_UNUSED_VALUES(DECLARATIONS_AFTER, CHECK_MIDRULE_VALUES)
-# ------------------------------------------------------------------
-# Generate a grammar to test unused values,
-# compile it, run it. If DECLARATIONS_AFTER
-# is set, then the token, type, and destructor
-# declarations are generated after the rules
-# rather than before. If CHECK_MIDRULE_VALUES
-# is set, then --warnings=midrule-values is
-# set.
-
+# ----------------------------------------------------------------
+# Generate a grammar to test unused values, compile it, run it. If
+# DECLARATIONS_AFTER is set, then the token, type, and destructor
+# declarations are generated after the rules rather than before. If
+# CHECK_MIDRULE_VALUES is set, then --warnings=midrule-values is set.
m4_define([AT_CHECK_UNUSED_VALUES],
[AT_DATA([input.y],
m4_ifval($1, [
)
AT_BISON_CHECK(m4_ifval($2, [ --warnings=midrule-values ])[ input.y], [0], [],
-[[input.y:11.10-32: warning: unset value: $]$[
-input.y:11.10-32: warning: unused value: $]1[
-input.y:11.10-32: warning: unused value: $]3[
-input.y:11.10-32: warning: unused value: $]5[
-input.y:12.9: warning: empty rule for typed nonterminal, and no action
-]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$
-input.y:13.26-41: warning: unset value: $$
-]]])[[input.y:13.10-62: warning: unset value: $]$[
-input.y:13.10-62: warning: unused value: $]3[
-input.y:13.10-62: warning: unused value: $]5[
-]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$
-]]])[[input.y:14.10-49: warning: unset value: $]$[
-input.y:14.10-49: warning: unused value: $]3[
-input.y:14.10-49: warning: unused value: $]5[
-input.y:15.10-37: warning: unset value: $]$[
-input.y:15.10-37: warning: unused value: $]3[
-input.y:15.10-37: warning: unused value: $]5[
-input.y:17.10-58: warning: unset value: $]$[
-input.y:17.10-58: warning: unused value: $]1[
-]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[
-]]])[[input.y:17.10-58: warning: unused value: $]3[
-]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[
-]]])[[input.y:17.10-58: warning: unused value: $]5[
-input.y:18.10-72: warning: unset value: $]$[
-input.y:18.10-72: warning: unused value: $]1[
-input.y:18.10-72: warning: unused value: $]3[
-]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[
-]]])[[input.y:18.10-72: warning: unused value: $]5[
-]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[
-]]])[[input.y:21.10-68: warning: unset value: $]$[
-input.y:21.10-68: warning: unused value: $]1[
-input.y:21.10-68: warning: unused value: $]2[
-]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[
+[[input.y:11.10-32: warning: unset value: $]$[ [-Wother]
+input.y:11.10-32: warning: unused value: $]1[ [-Wother]
+input.y:11.10-32: warning: unused value: $]3[ [-Wother]
+input.y:11.10-32: warning: unused value: $]5[ [-Wother]
+input.y:12.9: warning: empty rule for typed nonterminal, and no action [-Wother]
+]]m4_ifval($2, [[[input.y:13.14-20: warning: unset value: $$ [-Wmidrule-values]
+input.y:13.26-41: warning: unset value: $$ [-Wmidrule-values]
+]]])[[input.y:13.10-62: warning: unset value: $]$[ [-Wother]
+input.y:13.10-62: warning: unused value: $]3[ [-Wother]
+input.y:13.10-62: warning: unused value: $]5[ [-Wother]
+]]m4_ifval($2, [[[input.y:14.14-16: warning: unset value: $$ [-Wmidrule-values]
+]]])[[input.y:14.10-49: warning: unset value: $]$[ [-Wother]
+input.y:14.10-49: warning: unused value: $]3[ [-Wother]
+input.y:14.10-49: warning: unused value: $]5[ [-Wother]
+input.y:15.10-37: warning: unset value: $]$[ [-Wother]
+input.y:15.10-37: warning: unused value: $]3[ [-Wother]
+input.y:15.10-37: warning: unused value: $]5[ [-Wother]
+input.y:17.10-58: warning: unset value: $]$[ [-Wother]
+input.y:17.10-58: warning: unused value: $]1[ [-Wother]
+]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]2[ [-Wmidrule-values]
+]]])[[input.y:17.10-58: warning: unused value: $]3[ [-Wother]
+]]m4_ifval($2, [[[input.y:17.10-58: warning: unused value: $]4[ [-Wmidrule-values]
+]]])[[input.y:17.10-58: warning: unused value: $]5[ [-Wother]
+input.y:18.10-72: warning: unset value: $]$[ [-Wother]
+input.y:18.10-72: warning: unused value: $]1[ [-Wother]
+input.y:18.10-72: warning: unused value: $]3[ [-Wother]
+]]m4_ifval($2, [[[input.y:18.10-72: warning: unused value: $]4[ [-Wmidrule-values]
+]]])[[input.y:18.10-72: warning: unused value: $]5[ [-Wother]
+]]m4_ifval($2, [[[input.y:20.10-55: warning: unused value: $]3[ [-Wmidrule-values]
+]]])[[input.y:21.10-68: warning: unset value: $]$[ [-Wother]
+input.y:21.10-68: warning: unused value: $]1[ [-Wother]
+input.y:21.10-68: warning: unused value: $]2[ [-Wother]
+]]m4_ifval($2, [[[input.y:21.10-68: warning: unused value: $]4[ [-Wmidrule-values]
]]]))])
]])
AT_BISON_CHECK([input.y], [1], [],
-[[input.y:1.13-29: error: redeclaration for default tagged %destructor
+[[input.y:1.13-29: error: %destructor redeclaration for <*>
input.y:1.13-29: previous declaration
-input.y:2.10-24: error: redeclaration for default tagged %printer
+input.y:2.10-24: error: %printer redeclaration for <*>
input.y:2.10-24: previous declaration
-input.y:4.13-29: error: redeclaration for default tagged %destructor
+input.y:4.13-29: error: %destructor redeclaration for <*>
input.y:1.13-29: previous declaration
-input.y:5.10-24: error: redeclaration for default tagged %printer
+input.y:5.10-24: error: %printer redeclaration for <*>
input.y:2.10-24: previous declaration
-input.y:7.13-29: error: redeclaration for default tagless %destructor
+input.y:7.13-29: error: %destructor redeclaration for <>
input.y:7.13-29: previous declaration
-input.y:8.10-24: error: redeclaration for default tagless %printer
+input.y:8.10-24: error: %printer redeclaration for <>
input.y:8.10-24: previous declaration
-input.y:10.13-29: error: redeclaration for default tagless %destructor
+input.y:10.13-29: error: %destructor redeclaration for <>
input.y:7.13-29: previous declaration
-input.y:11.10-24: error: redeclaration for default tagless %printer
+input.y:11.10-24: error: %printer redeclaration for <>
input.y:8.10-24: previous declaration
-input.y:17.13-29: error: redeclaration for default tagged %destructor
+input.y:17.13-29: error: %destructor redeclaration for <*>
input.y:4.13-29: previous declaration
-input.y:18.10-24: error: redeclaration for default tagged %printer
+input.y:18.10-24: error: %printer redeclaration for <*>
input.y:5.10-24: previous declaration
-input.y:20.13-29: error: redeclaration for default tagless %destructor
+input.y:20.13-29: error: %destructor redeclaration for <>
input.y:10.13-29: previous declaration
-input.y:21.10-24: error: redeclaration for default tagless %printer
+input.y:21.10-24: error: %printer redeclaration for <>
input.y:11.10-24: previous declaration
]])
AT_CLEANUP
+## ------------------- ##
+## Undefined symbols. ##
+## ------------------- ##
+
+AT_SETUP([Undefined symbols])
+
+AT_DATA([[input.y]],
+[[%printer {} foo baz
+%destructor {} bar
+%type <foo> qux
+%%
+exp: bar;
+]])
+
+AT_BISON_CHECK([input.y], [1], [],
+[[input.y:2.16-18: error: symbol bar is used, but is not defined as a token and has no rules
+input.y:1.17-19: warning: symbol baz is used, but is not defined as a token and has no rules [-Wother]
+input.y:1.13-15: warning: symbol foo is used, but is not defined as a token and has no rules [-Wother]
+input.y:3.13-15: warning: symbol qux is used, but is not defined as a token and has no rules [-Wother]
+]])
+
+AT_CLEANUP
+
+
+## ----------------------------------------------------- ##
+## Unassociated types used for a printer or destructor. ##
+## ----------------------------------------------------- ##
+
+AT_SETUP([Unassociated types used for a printer or destructor])
+
+AT_DATA([[input.y]],
+[[%token <type1> tag1
+%type <type2> tag2
+
+%printer { } <type1> <type3>
+%destructor { } <type2> <type4>
+
+%%
+
+exp: tag1 { $1; }
+ | tag2 { $1; }
+
+tag2: "a" { $$; }
+]])
+
+AT_BISON_CHECK([input.y], [0], [],
+[[input.y:4.22-28: warning: type <type3> is used, but is not associated to any symbol [-Wother]
+input.y:5.25-31: warning: type <type4> is used, but is not associated to any symbol [-Wother]
+]])
+
+AT_CLEANUP
+
+
+## --------------------------------- ##
+## Useless printers or destructors. ##
+## --------------------------------- ##
+
+AT_SETUP([Useless printers or destructors])
+
+# AT_TEST([INPUT], [STDERR])
+# --------------------------
+m4_pushdef([AT_TEST],
+[AT_DATA([[input.y]],
+[$1
+])
+AT_BISON_CHECK([input.y], [0], [], [$2
+])])
+
+AT_TEST([[%token <type1> token1
+%token <type2> token2
+%token <type3> token3
+%token <type4> token4
+%token <type5> token51 token52
+%token <type6> token61 token62
+%token <type7> token7
+
+%printer {} token1
+%destructor {} token2
+%printer {} token51
+%destructor {} token61
+
+%printer {} token7
+
+%printer {} <type1>
+%destructor {} <type2>
+%printer {} <type3>
+%destructor {} <type4>
+
+%printer {} <type5>
+%destructor {} <type6>
+
+%destructor {} <type7>
+
+%%
+exp: "a";]],
+[[input.y:16.13-19: warning: useless %printer for type <type1> [-Wother]
+input.y:17.16-22: warning: useless %destructor for type <type2> [-Wother]]])
+
+# If everybody is typed, <> is useless.
+AT_TEST([[%type <type> exp
+%token <type> a
+%printer {} <> <*>
+%%
+exp: a;]],
+[[input.y:3.13-14: warning: useless %printer for type <> [-Wother]]])
+
+# If nobody is typed, <*> is useless.
+AT_TEST([[%token a
+%printer {} <> <*>
+%%
+exp: a;]],
+[[input.y:2.16-18: warning: useless %printer for type <*> [-Wother]]])
+
+m4_popdef([AT_TEST])
+
+AT_CLEANUP
+
## ---------------------------------------- ##
## Unused values with default %destructor. ##
]])
AT_BISON_CHECK([input.y], [0], [],
-[[input.y:6.8-45: warning: unset value: $$
-input.y:6.8-45: warning: unused value: $2
-input.y:7.6-8: warning: unset value: $$
+[[input.y:6.8-45: warning: unset value: $$ [-Wother]
+input.y:6.8-45: warning: unused value: $2 [-Wother]
+input.y:7.6-8: warning: unset value: $$ [-Wother]
]])
AT_DATA([[input.y]],
]])
AT_BISON_CHECK([input.y], [0], [],
-[[input.y:6.8-45: warning: unused value: $4
-input.y:8.9-11: warning: unset value: $$
+[[input.y:6.8-45: warning: unused value: $4 [-Wother]
+input.y:8.9-11: warning: unset value: $$ [-Wother]
]])
AT_CLEANUP
]])
AT_BISON_CHECK([input.y], [0], [],
-[[input.y:6.8-22: warning: unset value: $$
-input.y:6.8-22: warning: unused value: $2
-input.y:7.6-8: warning: unset value: $$
+[[input.y:6.8-22: warning: unset value: $$ [-Wother]
+input.y:6.8-22: warning: unused value: $2 [-Wother]
+input.y:7.6-8: warning: unset value: $$ [-Wother]
]])
AT_CLEANUP
}
]])
-# Pacify Emacs' font-lock-mode: "
+# Pacify Emacs'font-lock-mode: "
AT_DATA([main.c],
[[typedef int value;
AT_SETUP([String aliases for character tokens])
-# Bison once thought a character token and its alias were different symbols
-# with the same user token number.
+# Bison once thought a character token and its alias were different
+# symbols with the same user token number.
AT_DATA_GRAMMAR([input.y],
[[%token 'a' "a"
AT_BISON_OPTION_POPDEFS
# POSIX Yacc accept periods, but not dashes.
-AT_BISON_CHECK([--yacc input.y], [1], [],
-[[input.y:9.8-16: POSIX Yacc forbids dashes in symbol names: WITH-DASH
-input.y:18.8-16: POSIX Yacc forbids dashes in symbol names: with-dash
+AT_BISON_CHECK([--yacc -Wno-error input.y], [], [],
+[[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc]
+input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc]
]])
# So warn about them.
AT_BISON_CHECK([-Wyacc input.y], [], [],
-[[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH
-input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash
+[[input.y:9.8-16: warning: POSIX Yacc forbids dashes in symbol names: WITH-DASH [-Wyacc]
+input.y:18.8-16: warning: POSIX Yacc forbids dashes in symbol names: with-dash [-Wyacc]
]])
# Dashes are fine for GNU Bison.
AT_BISON_CHECK([redecl.y], [1], [],
[[redecl.y:10.10-22: error: user token number 11259375 redeclaration for HEXADECIMAL_1
- redecl.y:9.8-16: previous declaration for DECIMAL_1
+ redecl.y:9.8-16: previous declaration for DECIMAL_1
redecl.y:12.10-18: error: user token number 16702650 redeclaration for DECIMAL_2
- redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
+ redecl.y:11.10-22: previous declaration for HEXADECIMAL_2
]])
AT_DATA_GRAMMAR([too-large.y],
AT_SETUP([Unclosed constructs])
-# Bison's scan-gram.l once forgot to STRING_FINISH some unclosed constructs, so
-# they were prepended to whatever it STRING_GROW'ed next. It also threw them
-# away rather than returning them to the parser. The effect was confusing
-# subsequent error messages.
+# Bison's scan-gram.l once forgot to STRING_FINISH some unclosed
+# constructs, so they were prepended to whatever it STRING_GROW'ed
+# next. It also threw them away rather than returning them to the
+# parser. The effect was confusing subsequent error messages.
AT_DATA([input.y],
[[%token A "a
AT_SETUP([%start after first rule])
-# Bison once complained that a %start after the first rule was a redeclaration
-# of the start symbol.
+# Bison once complained that a %start after the first rule was a
+# redeclaration of the start symbol.
AT_DATA([input.y],
[[%%
]])
AT_BISON_CHECK([[input.y]], [[0]], [],
-[[input.y:2.8-17: warning: token for %prec is not defined: PREC
+[[input.y:2.8-17: warning: token for %prec is not defined: PREC [-Wother]
]])
AT_CLEANUP
start: ;
]])
AT_BISON_CHECK([[input.y]], [1], [],
-[[input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither'
+[[input.y:1.9-21: warning: deprecated %define variable name: 'api.push_pull', use 'api.push-pull' [-Wdeprecated]
+input.y:1.9-21: error: invalid value for %define variable 'api.push-pull': 'neither'
input.y:1.9-21: error: accepted value: 'pull'
input.y:1.9-21: error: accepted value: 'push'
input.y:1.9-21: error: accepted value: 'both'
start: ;
]])
AT_BISON_CHECK([[input.y]], [1], [],
-[[input.y:1.9-34: error: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
+[[input.y:1.9-34: warning: deprecated %define variable name: 'lr.keep_unreachable_states', use 'lr.keep-unreachable-states' [-Wdeprecated]
+input.y:1.9-34: error: invalid value for %define Boolean variable 'lr.keep-unreachable-states'
+]])
+
+AT_DATA([[input.y]],
+[[%define namespace "foo"
+%define api.namespace "foo"
+%%
+start: ;
+]])
+AT_BISON_CHECK([[input.y]], [1], [],
+[[input.y:1.9-17: warning: deprecated %define variable name: 'namespace', use 'api.namespace' [-Wdeprecated]
+input.y:2.9-21: error: %define variable 'api.namespace' redefined
+input.y:1.9-17: previous definition
]])
AT_DATA([[input.y]],
AT_DATA([[input.y]],
[[%language "C++"
%defines
-%define namespace "]$1["
+%define api.namespace "]$1["
%%
start: ;
]])
AT_BISON_CHECK([[input.y]], [1], [],
[m4_foreach([b4_arg], m4_dquote(m4_shift($@)),
-[[input.y:3.9-17: error: ]b4_arg[
+[[input.y:3.9-21: error: ]b4_arg[
]])])
])
AT_CHECK([[perl -e "print 'start: \'';" >> empty.y || exit 77]])
AT_BISON_CHECK([empty.y], [1], [],
-[[empty.y:2.8-9: warning: empty character literal
-empty.y:3.8-4.0: warning: empty character literal
+[[empty.y:2.8-9: warning: empty character literal [-Wother]
+empty.y:3.8-4.0: warning: empty character literal [-Wother]
empty.y:3.8-4.0: error: missing "'" at end of line
-empty.y:4.8: warning: empty character literal
+empty.y:4.8: warning: empty character literal [-Wother]
empty.y:4.8: error: missing "'" at end of file
]])
AT_CHECK([[perl -e "print 'start: \'ab';" >> two.y || exit 77]])
AT_BISON_CHECK([two.y], [1], [],
-[[two.y:2.8-11: warning: extra characters in character literal
-two.y:3.8-4.0: warning: extra characters in character literal
+[[two.y:2.8-11: warning: extra characters in character literal [-Wother]
+two.y:3.8-4.0: warning: extra characters in character literal [-Wother]
two.y:3.8-4.0: error: missing "'" at end of line
-two.y:4.8-10: warning: extra characters in character literal
+two.y:4.8-10: warning: extra characters in character literal [-Wother]
two.y:4.8-10: error: missing "'" at end of file
]])
AT_CHECK([[perl -e "print 'start: \'abc';" >> three.y || exit 77]])
AT_BISON_CHECK([three.y], [1], [],
-[[three.y:2.8-12: warning: extra characters in character literal
-three.y:3.8-4.0: warning: extra characters in character literal
+[[three.y:2.8-12: warning: extra characters in character literal [-Wother]
+three.y:3.8-4.0: warning: extra characters in character literal [-Wother]
three.y:3.8-4.0: error: missing "'" at end of line
-three.y:4.8-11: warning: extra characters in character literal
+three.y:4.8-11: warning: extra characters in character literal [-Wother]
three.y:4.8-11: error: missing "'" at end of file
]])
AT_BISON_CHECK([input.y], [1], [],
[[input.y:2.9-12: error: invalid number after \-escape: 777
-input.y:2.8-13: warning: empty character literal
+input.y:2.8-13: warning: empty character literal [-Wother]
input.y:2.16-17: error: invalid number after \-escape: 0
-input.y:2.15-18: warning: empty character literal
+input.y:2.15-18: warning: empty character literal [-Wother]
input.y:2.21-25: error: invalid number after \-escape: xfff
-input.y:2.20-26: warning: empty character literal
+input.y:2.20-26: warning: empty character literal [-Wother]
input.y:2.29-31: error: invalid number after \-escape: x0
-input.y:2.28-32: warning: empty character literal
+input.y:2.28-32: warning: empty character literal [-Wother]
input.y:3.9-14: error: invalid number after \-escape: uffff
-input.y:3.8-15: warning: empty character literal
+input.y:3.8-15: warning: empty character literal [-Wother]
input.y:3.18-23: error: invalid number after \-escape: u0000
-input.y:3.17-24: warning: empty character literal
+input.y:3.17-24: warning: empty character literal [-Wother]
input.y:3.27-36: error: invalid number after \-escape: Uffffffff
-input.y:3.26-37: warning: empty character literal
+input.y:3.26-37: warning: empty character literal [-Wother]
input.y:3.40-49: error: invalid number after \-escape: U00000000
-input.y:3.39-50: warning: empty character literal
+input.y:3.39-50: warning: empty character literal [-Wother]
input.y:4.9-10: error: invalid character after \-escape: ' '
-input.y:4.8-11: warning: empty character literal
+input.y:4.8-11: warning: empty character literal [-Wother]
input.y:4.14-15: error: invalid character after \-escape: A
-input.y:4.13-16: warning: empty character literal
+input.y:4.13-16: warning: empty character literal [-Wother]
input.y:5.9-16: error: invalid character after \-escape: \t
input.y:5.17: error: invalid character after \-escape: \f
input.y:5.18: error: invalid character after \-escape: \0
# -Werror is not enabled by -Wall or equivalent.
AT_BISON_CHECK([[-Wall input.y]], [[0]], [[]],
-[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
]])
AT_BISON_CHECK([[-W input.y]], [[0]], [[]],
-[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
]])
AT_BISON_CHECK([[-Wno-none input.y]], [[0]], [[]],
-[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+[[input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar [-Wyacc]
]])
# -Werror is not disabled by -Wnone or equivalent.
AT_BISON_CHECK([[-Werror,none,yacc input.y]], [[1]], [[]], [[stderr]])
AT_CHECK([[sed 's/^.*bison:/bison:/' stderr]], [[0]],
-[[bison: warnings being treated as errors
-input.y:2.1-7: warning: POSIX Yacc forbids dashes in symbol names: foo-bar
+[[input.y:2.1-7: error: POSIX Yacc forbids dashes in symbol names: foo-bar [-Werror=yacc]
]])
[mv stderr experr]
AT_BISON_CHECK([[-Werror,no-all,yacc input.y]], [[1]], [[]], [[experr]])
# check that the warnings are reported once, not three times.
AT_DATA_GRAMMAR([[input.y]],
-[[%token TOK
+[[%type <TYPE> exp
+%token <TYPE> TOK TOK2
%destructor { $%; @%; } <*> exp TOK;
%initial-action { $%; @%; };
%printer { $%; @%; } <*> exp TOK;
]])
AT_BISON_CHECK([[input.y]], 0, [],
-[[input.y:10.19: warning: stray '$'
-input.y:10.23: warning: stray '@'
-input.y:11.19: warning: stray '$'
-input.y:11.23: warning: stray '@'
-input.y:12.19: warning: stray '$'
-input.y:12.23: warning: stray '@'
-input.y:14.19: warning: stray '$'
-input.y:14.23: warning: stray '@'
+[[input.y:11.19: warning: stray '$' [-Wother]
+input.y:11.23: warning: stray '@' [-Wother]
+input.y:12.19: warning: stray '$' [-Wother]
+input.y:12.23: warning: stray '@' [-Wother]
+input.y:13.19: warning: stray '$' [-Wother]
+input.y:13.23: warning: stray '@' [-Wother]
+input.y:15.19: warning: stray '$' [-Wother]
+input.y:15.23: warning: stray '@' [-Wother]
]])
AT_CLEANUP
[AT_DATA([[input.y]],
[[%type <$1(DEAD %type)> exp
%token <$1(DEAD %token)> a
+%token b
%initial-action
{
$$;
};
%%
exp:
- a a[last]
+ a a[name] b
{
$$;
$][1;
$<$1(DEAD action 1)>$
$<$1(DEAD action 2)>1
- $<$1(DEAD action 3)>last
+ $<$1(DEAD action 3)>name
$<$1(DEAD action 4)>0
;
};
projects / bison.git / commitdiff
