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Linux/scripts/genksyms/parse.y

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Diff markup

Differences between /scripts/genksyms/parse.y (Version linux-6.12-rc7) and /scripts/genksyms/parse.y (Version linux-4.4.302)


  1 /* SPDX-License-Identifier: GPL-2.0-or-later * !!   1 /* C global declaration parser for genksyms.
  2 /*                                             !!   2    Copyright 1996, 1997 Linux International.
  3  * C global declaration parser for genksyms.   !!   3 
  4  * Copyright 1996, 1997 Linux International.   !!   4    New implementation contributed by Richard Henderson <rth@tamu.edu>
  5  *                                             !!   5    Based on original work by Bjorn Ekwall <bj0rn@blox.se>
  6  * New implementation contributed by Richard H< !!   6 
  7  * Based on original work by Bjorn Ekwall <bj0r !!   7    This file is part of the Linux modutils.
  8  *                                             !!   8 
  9  * This file is part of the Linux modutils.    !!   9    This program is free software; you can redistribute it and/or modify it
 10  */                                            !!  10    under the terms of the GNU General Public License as published by the
                                                   >>  11    Free Software Foundation; either version 2 of the License, or (at your
                                                   >>  12    option) any later version.
                                                   >>  13 
                                                   >>  14    This program is distributed in the hope that it will be useful, but
                                                   >>  15    WITHOUT ANY WARRANTY; without even the implied warranty of
                                                   >>  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                                                   >>  17    General Public License for more details.
                                                   >>  18 
                                                   >>  19    You should have received a copy of the GNU General Public License
                                                   >>  20    along with this program; if not, write to the Free Software Foundation,
                                                   >>  21    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
                                                   >>  22 
 11                                                    23 
 12 %{                                                 24 %{
 13                                                    25 
 14 #include <assert.h>                                26 #include <assert.h>
 15 #include <stdlib.h>                                27 #include <stdlib.h>
 16 #include <string.h>                                28 #include <string.h>
 17 #include "genksyms.h"                              29 #include "genksyms.h"
 18                                                    30 
 19 static int is_typedef;                             31 static int is_typedef;
 20 static int is_extern;                              32 static int is_extern;
 21 static char *current_name;                         33 static char *current_name;
 22 static struct string_list *decl_spec;              34 static struct string_list *decl_spec;
 23                                                    35 
 24 static void yyerror(const char *);                 36 static void yyerror(const char *);
 25                                                    37 
 26 static inline void                                 38 static inline void
 27 remove_node(struct string_list **p)                39 remove_node(struct string_list **p)
 28 {                                                  40 {
 29   struct string_list *node = *p;                   41   struct string_list *node = *p;
 30   *p = node->next;                                 42   *p = node->next;
 31   free_node(node);                                 43   free_node(node);
 32 }                                                  44 }
 33                                                    45 
 34 static inline void                                 46 static inline void
 35 remove_list(struct string_list **pb, struct st     47 remove_list(struct string_list **pb, struct string_list **pe)
 36 {                                                  48 {
 37   struct string_list *b = *pb, *e = *pe;           49   struct string_list *b = *pb, *e = *pe;
 38   *pb = e;                                         50   *pb = e;
 39   free_list(b, e);                                 51   free_list(b, e);
 40 }                                                  52 }
 41                                                    53 
 42 /* Record definition of a struct/union/enum */     54 /* Record definition of a struct/union/enum */
 43 static void record_compound(struct string_list     55 static void record_compound(struct string_list **keyw,
 44                        struct string_list **id     56                        struct string_list **ident,
 45                        struct string_list **bo     57                        struct string_list **body,
 46                        enum symbol_type type)      58                        enum symbol_type type)
 47 {                                                  59 {
 48         struct string_list *b = *body, *i = *i     60         struct string_list *b = *body, *i = *ident, *r;
 49                                                    61 
 50         if (i->in_source_file) {                   62         if (i->in_source_file) {
 51                 remove_node(keyw);                 63                 remove_node(keyw);
 52                 (*ident)->tag = type;              64                 (*ident)->tag = type;
 53                 remove_list(body, ident);          65                 remove_list(body, ident);
 54                 return;                            66                 return;
 55         }                                          67         }
 56         r = copy_node(i); r->tag = type;           68         r = copy_node(i); r->tag = type;
 57         r->next = (*keyw)->next; *body = r; (*     69         r->next = (*keyw)->next; *body = r; (*keyw)->next = NULL;
 58         add_symbol(i->string, type, b, is_exte     70         add_symbol(i->string, type, b, is_extern);
 59 }                                                  71 }
 60                                                    72 
 61 %}                                                 73 %}
 62                                                    74 
 63 %token ASM_KEYW                                    75 %token ASM_KEYW
 64 %token ATTRIBUTE_KEYW                              76 %token ATTRIBUTE_KEYW
 65 %token AUTO_KEYW                                   77 %token AUTO_KEYW
 66 %token BOOL_KEYW                                   78 %token BOOL_KEYW
 67 %token BUILTIN_INT_KEYW                        << 
 68 %token CHAR_KEYW                                   79 %token CHAR_KEYW
 69 %token CONST_KEYW                                  80 %token CONST_KEYW
 70 %token DOUBLE_KEYW                                 81 %token DOUBLE_KEYW
 71 %token ENUM_KEYW                                   82 %token ENUM_KEYW
 72 %token EXTERN_KEYW                                 83 %token EXTERN_KEYW
 73 %token EXTENSION_KEYW                              84 %token EXTENSION_KEYW
 74 %token FLOAT_KEYW                                  85 %token FLOAT_KEYW
 75 %token INLINE_KEYW                                 86 %token INLINE_KEYW
 76 %token INT_KEYW                                    87 %token INT_KEYW
 77 %token LONG_KEYW                                   88 %token LONG_KEYW
 78 %token REGISTER_KEYW                               89 %token REGISTER_KEYW
 79 %token RESTRICT_KEYW                               90 %token RESTRICT_KEYW
 80 %token SHORT_KEYW                                  91 %token SHORT_KEYW
 81 %token SIGNED_KEYW                                 92 %token SIGNED_KEYW
 82 %token STATIC_KEYW                                 93 %token STATIC_KEYW
 83 %token STATIC_ASSERT_KEYW                      << 
 84 %token STRUCT_KEYW                                 94 %token STRUCT_KEYW
 85 %token TYPEDEF_KEYW                                95 %token TYPEDEF_KEYW
 86 %token UNION_KEYW                                  96 %token UNION_KEYW
 87 %token UNSIGNED_KEYW                               97 %token UNSIGNED_KEYW
 88 %token VOID_KEYW                                   98 %token VOID_KEYW
 89 %token VOLATILE_KEYW                               99 %token VOLATILE_KEYW
 90 %token TYPEOF_KEYW                                100 %token TYPEOF_KEYW
 91 %token VA_LIST_KEYW                            << 
 92                                                   101 
 93 %token EXPORT_SYMBOL_KEYW                         102 %token EXPORT_SYMBOL_KEYW
 94                                                   103 
 95 %token ASM_PHRASE                                 104 %token ASM_PHRASE
 96 %token ATTRIBUTE_PHRASE                           105 %token ATTRIBUTE_PHRASE
 97 %token TYPEOF_PHRASE                              106 %token TYPEOF_PHRASE
 98 %token BRACE_PHRASE                               107 %token BRACE_PHRASE
 99 %token BRACKET_PHRASE                             108 %token BRACKET_PHRASE
100 %token EXPRESSION_PHRASE                          109 %token EXPRESSION_PHRASE
101 %token STATIC_ASSERT_PHRASE                    << 
102                                                   110 
103 %token CHAR                                       111 %token CHAR
104 %token DOTS                                       112 %token DOTS
105 %token IDENT                                      113 %token IDENT
106 %token INT                                        114 %token INT
107 %token REAL                                       115 %token REAL
108 %token STRING                                     116 %token STRING
109 %token TYPE                                       117 %token TYPE
110 %token OTHER                                      118 %token OTHER
111 %token FILENAME                                   119 %token FILENAME
112                                                   120 
113 %%                                                121 %%
114                                                   122 
115 declaration_seq:                                  123 declaration_seq:
116         declaration                               124         declaration
117         | declaration_seq declaration             125         | declaration_seq declaration
118         ;                                         126         ;
119                                                   127 
120 declaration:                                      128 declaration:
121         { is_typedef = 0; is_extern = 0; curre    129         { is_typedef = 0; is_extern = 0; current_name = NULL; decl_spec = NULL; }
122         declaration1                              130         declaration1
123         { free_list(*$2, NULL); *$2 = NULL; }     131         { free_list(*$2, NULL); *$2 = NULL; }
124         ;                                         132         ;
125                                                   133 
126 declaration1:                                     134 declaration1:
127         EXTENSION_KEYW TYPEDEF_KEYW { is_typed    135         EXTENSION_KEYW TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
128                 { $$ = $4; }                      136                 { $$ = $4; }
129         | TYPEDEF_KEYW { is_typedef = 1; } sim    137         | TYPEDEF_KEYW { is_typedef = 1; } simple_declaration
130                 { $$ = $3; }                      138                 { $$ = $3; }
131         | simple_declaration                      139         | simple_declaration
132         | function_definition                     140         | function_definition
133         | asm_definition                          141         | asm_definition
134         | export_definition                       142         | export_definition
135         | static_assert                        << 
136         | error ';'                               143         | error ';'                             { $$ = $2; }
137         | error '}'                               144         | error '}'                             { $$ = $2; }
138         ;                                         145         ;
139                                                   146 
140 simple_declaration:                               147 simple_declaration:
141         decl_specifier_seq_opt init_declarator    148         decl_specifier_seq_opt init_declarator_list_opt ';'
142                 { if (current_name) {             149                 { if (current_name) {
143                     struct string_list *decl =    150                     struct string_list *decl = (*$3)->next;
144                     (*$3)->next = NULL;           151                     (*$3)->next = NULL;
145                     add_symbol(current_name,      152                     add_symbol(current_name,
146                                is_typedef ? SY    153                                is_typedef ? SYM_TYPEDEF : SYM_NORMAL,
147                                decl, is_extern    154                                decl, is_extern);
148                     current_name = NULL;          155                     current_name = NULL;
149                   }                               156                   }
150                   $$ = $3;                        157                   $$ = $3;
151                 }                                 158                 }
152         ;                                         159         ;
153                                                   160 
154 init_declarator_list_opt:                         161 init_declarator_list_opt:
155         /* empty */                               162         /* empty */                             { $$ = NULL; }
156         | init_declarator_list                    163         | init_declarator_list
157         ;                                         164         ;
158                                                   165 
159 init_declarator_list:                             166 init_declarator_list:
160         init_declarator                           167         init_declarator
161                 { struct string_list *decl = *    168                 { struct string_list *decl = *$1;
162                   *$1 = NULL;                     169                   *$1 = NULL;
163                   add_symbol(current_name,        170                   add_symbol(current_name,
164                              is_typedef ? SYM_    171                              is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
165                   current_name = NULL;            172                   current_name = NULL;
166                   $$ = $1;                        173                   $$ = $1;
167                 }                                 174                 }
168         | init_declarator_list ',' init_declar    175         | init_declarator_list ',' init_declarator
169                 { struct string_list *decl = *    176                 { struct string_list *decl = *$3;
170                   *$3 = NULL;                     177                   *$3 = NULL;
171                   free_list(*$2, NULL);           178                   free_list(*$2, NULL);
172                   *$2 = decl_spec;                179                   *$2 = decl_spec;
173                   add_symbol(current_name,        180                   add_symbol(current_name,
174                              is_typedef ? SYM_    181                              is_typedef ? SYM_TYPEDEF : SYM_NORMAL, decl, is_extern);
175                   current_name = NULL;            182                   current_name = NULL;
176                   $$ = $3;                        183                   $$ = $3;
177                 }                                 184                 }
178         ;                                         185         ;
179                                                   186 
180 init_declarator:                                  187 init_declarator:
181         declarator asm_phrase_opt attribute_op    188         declarator asm_phrase_opt attribute_opt initializer_opt
182                 { $$ = $4 ? $4 : $3 ? $3 : $2     189                 { $$ = $4 ? $4 : $3 ? $3 : $2 ? $2 : $1; }
183         ;                                         190         ;
184                                                   191 
185 /* Hang on to the specifiers so that we can re    192 /* Hang on to the specifiers so that we can reuse them.  */
186 decl_specifier_seq_opt:                           193 decl_specifier_seq_opt:
187         /* empty */                               194         /* empty */                             { decl_spec = NULL; }
188         | decl_specifier_seq                      195         | decl_specifier_seq
189         ;                                         196         ;
190                                                   197 
191 decl_specifier_seq:                               198 decl_specifier_seq:
192         decl_specifier                            199         decl_specifier                          { decl_spec = *$1; }
193         | decl_specifier_seq decl_specifier       200         | decl_specifier_seq decl_specifier     { decl_spec = *$2; }
194         ;                                         201         ;
195                                                   202 
196 decl_specifier:                                   203 decl_specifier:
197         storage_class_specifier                   204         storage_class_specifier
198                 { /* Version 2 checksumming ig    205                 { /* Version 2 checksumming ignores storage class, as that
199                      is really irrelevant to t    206                      is really irrelevant to the linkage.  */
200                   remove_node($1);                207                   remove_node($1);
201                   $$ = $1;                        208                   $$ = $1;
202                 }                                 209                 }
203         | type_specifier                          210         | type_specifier
204         ;                                         211         ;
205                                                   212 
206 storage_class_specifier:                          213 storage_class_specifier:
207         AUTO_KEYW                                 214         AUTO_KEYW
208         | REGISTER_KEYW                           215         | REGISTER_KEYW
209         | STATIC_KEYW                             216         | STATIC_KEYW
210         | EXTERN_KEYW   { is_extern = 1; $$ =     217         | EXTERN_KEYW   { is_extern = 1; $$ = $1; }
211         | INLINE_KEYW   { is_extern = 0; $$ =     218         | INLINE_KEYW   { is_extern = 0; $$ = $1; }
212         ;                                         219         ;
213                                                   220 
214 type_specifier:                                   221 type_specifier:
215         simple_type_specifier                     222         simple_type_specifier
216         | cvar_qualifier                          223         | cvar_qualifier
217         | TYPEOF_KEYW '(' parameter_declaratio    224         | TYPEOF_KEYW '(' parameter_declaration ')'
218         | TYPEOF_PHRASE                           225         | TYPEOF_PHRASE
219                                                   226 
220         /* References to s/u/e's defined elsew    227         /* References to s/u/e's defined elsewhere.  Rearrange things
221            so that it is easier to expand the     228            so that it is easier to expand the definition fully later.  */
222         | STRUCT_KEYW IDENT                       229         | STRUCT_KEYW IDENT
223                 { remove_node($1); (*$2)->tag     230                 { remove_node($1); (*$2)->tag = SYM_STRUCT; $$ = $2; }
224         | UNION_KEYW IDENT                        231         | UNION_KEYW IDENT
225                 { remove_node($1); (*$2)->tag     232                 { remove_node($1); (*$2)->tag = SYM_UNION; $$ = $2; }
226         | ENUM_KEYW IDENT                         233         | ENUM_KEYW IDENT
227                 { remove_node($1); (*$2)->tag     234                 { remove_node($1); (*$2)->tag = SYM_ENUM; $$ = $2; }
228                                                   235 
229         /* Full definitions of an s/u/e.  Reco    236         /* Full definitions of an s/u/e.  Record it.  */
230         | STRUCT_KEYW IDENT class_body            237         | STRUCT_KEYW IDENT class_body
231                 { record_compound($1, $2, $3,     238                 { record_compound($1, $2, $3, SYM_STRUCT); $$ = $3; }
232         | UNION_KEYW IDENT class_body             239         | UNION_KEYW IDENT class_body
233                 { record_compound($1, $2, $3,     240                 { record_compound($1, $2, $3, SYM_UNION); $$ = $3; }
234         | ENUM_KEYW IDENT enum_body               241         | ENUM_KEYW IDENT enum_body
235                 { record_compound($1, $2, $3,     242                 { record_compound($1, $2, $3, SYM_ENUM); $$ = $3; }
236         /*                                        243         /*
237          * Anonymous enum definition. Tell add    244          * Anonymous enum definition. Tell add_symbol() to restart its counter.
238          */                                       245          */
239         | ENUM_KEYW enum_body                     246         | ENUM_KEYW enum_body
240                 { add_symbol(NULL, SYM_ENUM, N    247                 { add_symbol(NULL, SYM_ENUM, NULL, 0); $$ = $2; }
241         /* Anonymous s/u definitions.  Nothing    248         /* Anonymous s/u definitions.  Nothing needs doing.  */
242         | STRUCT_KEYW class_body                  249         | STRUCT_KEYW class_body                        { $$ = $2; }
243         | UNION_KEYW class_body                   250         | UNION_KEYW class_body                         { $$ = $2; }
244         ;                                         251         ;
245                                                   252 
246 simple_type_specifier:                            253 simple_type_specifier:
247         CHAR_KEYW                                 254         CHAR_KEYW
248         | SHORT_KEYW                              255         | SHORT_KEYW
249         | INT_KEYW                                256         | INT_KEYW
250         | LONG_KEYW                               257         | LONG_KEYW
251         | SIGNED_KEYW                             258         | SIGNED_KEYW
252         | UNSIGNED_KEYW                           259         | UNSIGNED_KEYW
253         | FLOAT_KEYW                              260         | FLOAT_KEYW
254         | DOUBLE_KEYW                             261         | DOUBLE_KEYW
255         | VOID_KEYW                               262         | VOID_KEYW
256         | BOOL_KEYW                               263         | BOOL_KEYW
257         | VA_LIST_KEYW                         << 
258         | BUILTIN_INT_KEYW                     << 
259         | TYPE                  { (*$1)->tag =    264         | TYPE                  { (*$1)->tag = SYM_TYPEDEF; $$ = $1; }
260         ;                                         265         ;
261                                                   266 
262 ptr_operator:                                     267 ptr_operator:
263         '*' cvar_qualifier_seq_opt                268         '*' cvar_qualifier_seq_opt
264                 { $$ = $2 ? $2 : $1; }            269                 { $$ = $2 ? $2 : $1; }
265         ;                                         270         ;
266                                                   271 
267 cvar_qualifier_seq_opt:                           272 cvar_qualifier_seq_opt:
268         /* empty */                               273         /* empty */                                     { $$ = NULL; }
269         | cvar_qualifier_seq                      274         | cvar_qualifier_seq
270         ;                                         275         ;
271                                                   276 
272 cvar_qualifier_seq:                               277 cvar_qualifier_seq:
273         cvar_qualifier                            278         cvar_qualifier
274         | cvar_qualifier_seq cvar_qualifier       279         | cvar_qualifier_seq cvar_qualifier             { $$ = $2; }
275         ;                                         280         ;
276                                                   281 
277 cvar_qualifier:                                   282 cvar_qualifier:
278         CONST_KEYW | VOLATILE_KEYW | ATTRIBUTE    283         CONST_KEYW | VOLATILE_KEYW | ATTRIBUTE_PHRASE
279         | RESTRICT_KEYW                           284         | RESTRICT_KEYW
280                 { /* restrict has no effect in    285                 { /* restrict has no effect in prototypes so ignore it */
281                   remove_node($1);                286                   remove_node($1);
282                   $$ = $1;                        287                   $$ = $1;
283                 }                                 288                 }
284         ;                                         289         ;
285                                                   290 
286 declarator:                                       291 declarator:
287         ptr_operator declarator                   292         ptr_operator declarator                 { $$ = $2; }
288         | direct_declarator                       293         | direct_declarator
289         ;                                         294         ;
290                                                   295 
291 direct_declarator:                                296 direct_declarator:
292         IDENT                                     297         IDENT
293                 { if (current_name != NULL) {     298                 { if (current_name != NULL) {
294                     error_with_pos("unexpected    299                     error_with_pos("unexpected second declaration name");
295                     YYERROR;                      300                     YYERROR;
296                   } else {                        301                   } else {
297                     current_name = (*$1)->stri    302                     current_name = (*$1)->string;
298                     $$ = $1;                      303                     $$ = $1;
299                   }                               304                   }
300                 }                                 305                 }
301         | TYPE                                    306         | TYPE
302                 { if (current_name != NULL) {     307                 { if (current_name != NULL) {
303                     error_with_pos("unexpected    308                     error_with_pos("unexpected second declaration name");
304                     YYERROR;                      309                     YYERROR;
305                   } else {                        310                   } else {
306                     current_name = (*$1)->stri    311                     current_name = (*$1)->string;
307                     $$ = $1;                      312                     $$ = $1;
308                   }                               313                   }
309                 }                                 314                 }
310         | direct_declarator '(' parameter_decl    315         | direct_declarator '(' parameter_declaration_clause ')'
311                 { $$ = $4; }                      316                 { $$ = $4; }
312         | direct_declarator '(' error ')'         317         | direct_declarator '(' error ')'
313                 { $$ = $4; }                      318                 { $$ = $4; }
314         | direct_declarator BRACKET_PHRASE        319         | direct_declarator BRACKET_PHRASE
315                 { $$ = $2; }                      320                 { $$ = $2; }
316         | '(' declarator ')'                      321         | '(' declarator ')'
317                 { $$ = $3; }                      322                 { $$ = $3; }
318         ;                                         323         ;
319                                                   324 
320 /* Nested declarators differ from regular decl    325 /* Nested declarators differ from regular declarators in that they do
321    not record the symbols they find in the glo    326    not record the symbols they find in the global symbol table.  */
322 nested_declarator:                                327 nested_declarator:
323         ptr_operator nested_declarator            328         ptr_operator nested_declarator          { $$ = $2; }
324         | direct_nested_declarator                329         | direct_nested_declarator
325         ;                                         330         ;
326                                                   331 
327 direct_nested_declarator:                         332 direct_nested_declarator:
328         IDENT                                     333         IDENT
329         | TYPE                                    334         | TYPE
330         | direct_nested_declarator '(' paramet    335         | direct_nested_declarator '(' parameter_declaration_clause ')'
331                 { $$ = $4; }                      336                 { $$ = $4; }
332         | direct_nested_declarator '(' error '    337         | direct_nested_declarator '(' error ')'
333                 { $$ = $4; }                      338                 { $$ = $4; }
334         | direct_nested_declarator BRACKET_PHR    339         | direct_nested_declarator BRACKET_PHRASE
335                 { $$ = $2; }                      340                 { $$ = $2; }
336         | '(' nested_declarator ')'               341         | '(' nested_declarator ')'
337                 { $$ = $3; }                      342                 { $$ = $3; }
338         | '(' error ')'                           343         | '(' error ')'
339                 { $$ = $3; }                      344                 { $$ = $3; }
340         ;                                         345         ;
341                                                   346 
342 parameter_declaration_clause:                     347 parameter_declaration_clause:
343         parameter_declaration_list_opt DOTS       348         parameter_declaration_list_opt DOTS             { $$ = $2; }
344         | parameter_declaration_list_opt          349         | parameter_declaration_list_opt
345         | parameter_declaration_list ',' DOTS     350         | parameter_declaration_list ',' DOTS           { $$ = $3; }
346         ;                                         351         ;
347                                                   352 
348 parameter_declaration_list_opt:                   353 parameter_declaration_list_opt:
349         /* empty */                               354         /* empty */                                     { $$ = NULL; }
350         | parameter_declaration_list              355         | parameter_declaration_list
351         ;                                         356         ;
352                                                   357 
353 parameter_declaration_list:                       358 parameter_declaration_list:
354         parameter_declaration                     359         parameter_declaration
355         | parameter_declaration_list ',' param    360         | parameter_declaration_list ',' parameter_declaration
356                 { $$ = $3; }                      361                 { $$ = $3; }
357         ;                                         362         ;
358                                                   363 
359 parameter_declaration:                            364 parameter_declaration:
360         decl_specifier_seq m_abstract_declarat    365         decl_specifier_seq m_abstract_declarator
361                 { $$ = $2 ? $2 : $1; }            366                 { $$ = $2 ? $2 : $1; }
362         ;                                         367         ;
363                                                   368 
364 m_abstract_declarator:                            369 m_abstract_declarator:
365         ptr_operator m_abstract_declarator        370         ptr_operator m_abstract_declarator
366                 { $$ = $2 ? $2 : $1; }            371                 { $$ = $2 ? $2 : $1; }
367         | direct_m_abstract_declarator            372         | direct_m_abstract_declarator
368         ;                                         373         ;
369                                                   374 
370 direct_m_abstract_declarator:                     375 direct_m_abstract_declarator:
371         /* empty */                               376         /* empty */                                     { $$ = NULL; }
372         | IDENT                                   377         | IDENT
373                 { /* For version 2 checksums,     378                 { /* For version 2 checksums, we don't want to remember
374                      private parameter names.     379                      private parameter names.  */
375                   remove_node($1);                380                   remove_node($1);
376                   $$ = $1;                        381                   $$ = $1;
377                 }                                 382                 }
378         /* This wasn't really a typedef name b    383         /* This wasn't really a typedef name but an identifier that
379            shadows one.  */                       384            shadows one.  */
380         | TYPE                                    385         | TYPE
381                 { remove_node($1);                386                 { remove_node($1);
382                   $$ = $1;                        387                   $$ = $1;
383                 }                                 388                 }
384         | direct_m_abstract_declarator '(' par    389         | direct_m_abstract_declarator '(' parameter_declaration_clause ')'
385                 { $$ = $4; }                      390                 { $$ = $4; }
386         | direct_m_abstract_declarator '(' err    391         | direct_m_abstract_declarator '(' error ')'
387                 { $$ = $4; }                      392                 { $$ = $4; }
388         | direct_m_abstract_declarator BRACKET    393         | direct_m_abstract_declarator BRACKET_PHRASE
389                 { $$ = $2; }                      394                 { $$ = $2; }
390         | '(' m_abstract_declarator ')'           395         | '(' m_abstract_declarator ')'
391                 { $$ = $3; }                      396                 { $$ = $3; }
392         | '(' error ')'                           397         | '(' error ')'
393                 { $$ = $3; }                      398                 { $$ = $3; }
394         ;                                         399         ;
395                                                   400 
396 function_definition:                              401 function_definition:
397         decl_specifier_seq_opt declarator BRAC    402         decl_specifier_seq_opt declarator BRACE_PHRASE
398                 { struct string_list *decl = *    403                 { struct string_list *decl = *$2;
399                   *$2 = NULL;                     404                   *$2 = NULL;
400                   add_symbol(current_name, SYM    405                   add_symbol(current_name, SYM_NORMAL, decl, is_extern);
401                   $$ = $3;                        406                   $$ = $3;
402                 }                                 407                 }
403         ;                                         408         ;
404                                                   409 
405 initializer_opt:                                  410 initializer_opt:
406         /* empty */                               411         /* empty */                                     { $$ = NULL; }
407         | initializer                             412         | initializer
408         ;                                         413         ;
409                                                   414 
410 /* We never care about the contents of an init    415 /* We never care about the contents of an initializer.  */
411 initializer:                                      416 initializer:
412         '=' EXPRESSION_PHRASE                     417         '=' EXPRESSION_PHRASE
413                 { remove_list($2, &(*$1)->next    418                 { remove_list($2, &(*$1)->next); $$ = $2; }
414         ;                                         419         ;
415                                                   420 
416 class_body:                                       421 class_body:
417         '{' member_specification_opt '}'          422         '{' member_specification_opt '}'                { $$ = $3; }
418         | '{' error '}'                           423         | '{' error '}'                                 { $$ = $3; }
419         ;                                         424         ;
420                                                   425 
421 member_specification_opt:                         426 member_specification_opt:
422         /* empty */                               427         /* empty */                                     { $$ = NULL; }
423         | member_specification                    428         | member_specification
424         ;                                         429         ;
425                                                   430 
426 member_specification:                             431 member_specification:
427         member_declaration                        432         member_declaration
428         | member_specification member_declarat    433         | member_specification member_declaration       { $$ = $2; }
429         ;                                         434         ;
430                                                   435 
431 member_declaration:                               436 member_declaration:
432         decl_specifier_seq_opt member_declarat    437         decl_specifier_seq_opt member_declarator_list_opt ';'
433                 { $$ = $3; }                      438                 { $$ = $3; }
434         | error ';'                               439         | error ';'
435                 { $$ = $2; }                      440                 { $$ = $2; }
436         ;                                         441         ;
437                                                   442 
438 member_declarator_list_opt:                       443 member_declarator_list_opt:
439         /* empty */                               444         /* empty */                                     { $$ = NULL; }
440         | member_declarator_list                  445         | member_declarator_list
441         ;                                         446         ;
442                                                   447 
443 member_declarator_list:                           448 member_declarator_list:
444         member_declarator                         449         member_declarator
445         | member_declarator_list ',' member_de    450         | member_declarator_list ',' member_declarator  { $$ = $3; }
446         ;                                         451         ;
447                                                   452 
448 member_declarator:                                453 member_declarator:
449         nested_declarator attribute_opt           454         nested_declarator attribute_opt                 { $$ = $2 ? $2 : $1; }
450         | IDENT member_bitfield_declarator        455         | IDENT member_bitfield_declarator              { $$ = $2; }
451         | member_bitfield_declarator              456         | member_bitfield_declarator
452         ;                                         457         ;
453                                                   458 
454 member_bitfield_declarator:                       459 member_bitfield_declarator:
455         ':' EXPRESSION_PHRASE                     460         ':' EXPRESSION_PHRASE                           { $$ = $2; }
456         ;                                         461         ;
457                                                   462 
458 attribute_opt:                                    463 attribute_opt:
459         /* empty */                               464         /* empty */                                     { $$ = NULL; }
460         | attribute_opt ATTRIBUTE_PHRASE          465         | attribute_opt ATTRIBUTE_PHRASE
461         ;                                         466         ;
462                                                   467 
463 enum_body:                                        468 enum_body:
464         '{' enumerator_list '}'                   469         '{' enumerator_list '}'                         { $$ = $3; }
465         | '{' enumerator_list ',' '}'             470         | '{' enumerator_list ',' '}'                   { $$ = $4; }
466          ;                                        471          ;
467                                                   472 
468 enumerator_list:                                  473 enumerator_list:
469         enumerator                                474         enumerator
470         | enumerator_list ',' enumerator          475         | enumerator_list ',' enumerator
471                                                   476 
472 enumerator:                                       477 enumerator:
473         IDENT                                     478         IDENT
474                 {                                 479                 {
475                         const char *name = str    480                         const char *name = strdup((*$1)->string);
476                         add_symbol(name, SYM_E    481                         add_symbol(name, SYM_ENUM_CONST, NULL, 0);
477                 }                                 482                 }
478         | IDENT '=' EXPRESSION_PHRASE             483         | IDENT '=' EXPRESSION_PHRASE
479                 {                                 484                 {
480                         const char *name = str    485                         const char *name = strdup((*$1)->string);
481                         struct string_list *ex    486                         struct string_list *expr = copy_list_range(*$3, *$2);
482                         add_symbol(name, SYM_E    487                         add_symbol(name, SYM_ENUM_CONST, expr, 0);
483                 }                                 488                 }
484                                                   489 
485 asm_definition:                                   490 asm_definition:
486         ASM_PHRASE ';'                            491         ASM_PHRASE ';'                                  { $$ = $2; }
487         ;                                         492         ;
488                                                   493 
489 asm_phrase_opt:                                   494 asm_phrase_opt:
490         /* empty */                               495         /* empty */                                     { $$ = NULL; }
491         | ASM_PHRASE                              496         | ASM_PHRASE
492         ;                                         497         ;
493                                                   498 
494 export_definition:                                499 export_definition:
495         EXPORT_SYMBOL_KEYW '(' IDENT ')' ';'      500         EXPORT_SYMBOL_KEYW '(' IDENT ')' ';'
496                 { export_symbol((*$3)->string)    501                 { export_symbol((*$3)->string); $$ = $5; }
497         ;                                         502         ;
498                                                   503 
499 /* Ignore any module scoped _Static_assert(... << 
500 static_assert:                                 << 
501         STATIC_ASSERT_PHRASE ';'               << 
502         ;                                      << 
503                                                   504 
504 %%                                                505 %%
505                                                   506 
506 static void                                       507 static void
507 yyerror(const char *e)                            508 yyerror(const char *e)
508 {                                                 509 {
509   error_with_pos("%s", e);                        510   error_with_pos("%s", e);
510 }                                                 511 }
                                                      

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