| @@ -1,1509 +1,1516 @@ | | | @@ -1,1509 +1,1516 @@ |
1 | /* $NetBSD: decl.c,v 1.50 2009/10/02 21:04:03 christos Exp $ */ | | 1 | /* $NetBSD: decl.c,v 1.51 2009/10/02 21:49:30 christos Exp $ */ |
2 | | | 2 | |
3 | /* | | 3 | /* |
4 | * Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved. | | 4 | * Copyright (c) 1996 Christopher G. Demetriou. All Rights Reserved. |
5 | * Copyright (c) 1994, 1995 Jochen Pohl | | 5 | * Copyright (c) 1994, 1995 Jochen Pohl |
6 | * All Rights Reserved. | | 6 | * All Rights Reserved. |
7 | * | | 7 | * |
8 | * Redistribution and use in source and binary forms, with or without | | 8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions | | 9 | * modification, are permitted provided that the following conditions |
10 | * are met: | | 10 | * are met: |
11 | * 1. Redistributions of source code must retain the above copyright | | 11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. | | 12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright | | 13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the | | 14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. | | 15 | * documentation and/or other materials provided with the distribution. |
16 | * 3. All advertising materials mentioning features or use of this software | | 16 | * 3. All advertising materials mentioning features or use of this software |
17 | * must display the following acknowledgement: | | 17 | * must display the following acknowledgement: |
18 | * This product includes software developed by Jochen Pohl for | | 18 | * This product includes software developed by Jochen Pohl for |
19 | * The NetBSD Project. | | 19 | * The NetBSD Project. |
20 | * 4. The name of the author may not be used to endorse or promote products | | 20 | * 4. The name of the author may not be used to endorse or promote products |
21 | * derived from this software without specific prior written permission. | | 21 | * derived from this software without specific prior written permission. |
22 | * | | 22 | * |
23 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | | 23 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
24 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | | 24 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
25 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | | 25 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
26 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | | 26 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
27 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | | 27 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
28 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | | 28 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
29 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | | 29 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
30 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | | 30 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | | 31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
32 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | | 32 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
33 | */ | | 33 | */ |
34 | | | 34 | |
35 | #if HAVE_NBTOOL_CONFIG_H | | 35 | #if HAVE_NBTOOL_CONFIG_H |
36 | #include "nbtool_config.h" | | 36 | #include "nbtool_config.h" |
37 | #endif | | 37 | #endif |
38 | | | 38 | |
39 | #include <sys/cdefs.h> | | 39 | #include <sys/cdefs.h> |
40 | #if defined(__RCSID) && !defined(lint) | | 40 | #if defined(__RCSID) && !defined(lint) |
41 | __RCSID("$NetBSD: decl.c,v 1.50 2009/10/02 21:04:03 christos Exp $"); | | 41 | __RCSID("$NetBSD: decl.c,v 1.51 2009/10/02 21:49:30 christos Exp $"); |
42 | #endif | | 42 | #endif |
43 | | | 43 | |
44 | #include <sys/param.h> | | 44 | #include <sys/param.h> |
45 | #include <limits.h> | | 45 | #include <limits.h> |
46 | #include <stdlib.h> | | 46 | #include <stdlib.h> |
47 | #include <string.h> | | 47 | #include <string.h> |
48 | | | 48 | |
49 | #include "lint1.h" | | 49 | #include "lint1.h" |
50 | | | 50 | |
51 | const char *unnamed = "<unnamed>"; | | 51 | const char *unnamed = "<unnamed>"; |
52 | | | 52 | |
53 | /* shared type structures for arithmtic types and void */ | | 53 | /* shared type structures for arithmtic types and void */ |
54 | static type_t *typetab; | | 54 | static type_t *typetab; |
55 | | | 55 | |
56 | /* value of next enumerator during declaration of enum types */ | | 56 | /* value of next enumerator during declaration of enum types */ |
57 | int enumval; | | 57 | int enumval; |
58 | | | 58 | |
59 | /* | | 59 | /* |
60 | * pointer to top element of a stack which contains informations local | | 60 | * pointer to top element of a stack which contains informations local |
61 | * to nested declarations | | 61 | * to nested declarations |
62 | */ | | 62 | */ |
63 | dinfo_t *dcs; | | 63 | dinfo_t *dcs; |
64 | | | 64 | |
65 | static type_t *tdeferr(type_t *, tspec_t); | | 65 | static type_t *tdeferr(type_t *, tspec_t); |
66 | static void settdsym(type_t *, sym_t *); | | 66 | static void settdsym(type_t *, sym_t *); |
67 | static tspec_t mrgtspec(tspec_t, tspec_t); | | 67 | static tspec_t mrgtspec(tspec_t, tspec_t); |
68 | static void align(int, int); | | 68 | static void align(int, int); |
69 | static sym_t *newtag(sym_t *, scl_t, int, int); | | 69 | static sym_t *newtag(sym_t *, scl_t, int, int); |
70 | static int eqargs(type_t *, type_t *, int *); | | 70 | static int eqargs(type_t *, type_t *, int *); |
71 | static int mnoarg(type_t *, int *); | | 71 | static int mnoarg(type_t *, int *); |
72 | static int chkosdef(sym_t *, sym_t *); | | 72 | static int chkosdef(sym_t *, sym_t *); |
73 | static int chkptdecl(sym_t *, sym_t *); | | 73 | static int chkptdecl(sym_t *, sym_t *); |
74 | static sym_t *nsfunc(sym_t *, sym_t *); | | 74 | static sym_t *nsfunc(sym_t *, sym_t *); |
75 | static void osfunc(sym_t *, sym_t *); | | 75 | static void osfunc(sym_t *, sym_t *); |
76 | static void ledecl(sym_t *); | | 76 | static void ledecl(sym_t *); |
77 | static int chkinit(sym_t *); | | 77 | static int chkinit(sym_t *); |
78 | static void chkausg(int, sym_t *); | | 78 | static void chkausg(int, sym_t *); |
79 | static void chkvusg(int, sym_t *); | | 79 | static void chkvusg(int, sym_t *); |
80 | static void chklusg(sym_t *); | | 80 | static void chklusg(sym_t *); |
81 | static void chktusg(sym_t *); | | 81 | static void chktusg(sym_t *); |
82 | static void chkglvar(sym_t *); | | 82 | static void chkglvar(sym_t *); |
83 | static void glchksz(sym_t *); | | 83 | static void glchksz(sym_t *); |
84 | | | 84 | |
85 | /* | | 85 | /* |
86 | * initializes all global vars used in declarations | | 86 | * initializes all global vars used in declarations |
87 | */ | | 87 | */ |
88 | void | | 88 | void |
89 | initdecl(void) | | 89 | initdecl(void) |
90 | { | | 90 | { |
91 | int i; | | 91 | int i; |
92 | | | 92 | |
93 | /* declaration stack */ | | 93 | /* declaration stack */ |
94 | dcs = xcalloc(1, sizeof (dinfo_t)); | | 94 | dcs = xcalloc(1, sizeof (dinfo_t)); |
95 | dcs->d_ctx = EXTERN; | | 95 | dcs->d_ctx = EXTERN; |
96 | dcs->d_ldlsym = &dcs->d_dlsyms; | | 96 | dcs->d_ldlsym = &dcs->d_dlsyms; |
97 | | | 97 | |
98 | /* type information and classification */ | | 98 | /* type information and classification */ |
99 | inittyp(); | | 99 | inittyp(); |
100 | | | 100 | |
101 | /* shared type structures */ | | 101 | /* shared type structures */ |
102 | typetab = xcalloc(NTSPEC, sizeof (type_t)); | | 102 | typetab = xcalloc(NTSPEC, sizeof (type_t)); |
103 | for (i = 0; i < NTSPEC; i++) | | 103 | for (i = 0; i < NTSPEC; i++) |
104 | typetab[i].t_tspec = NOTSPEC; | | 104 | typetab[i].t_tspec = NOTSPEC; |
105 | typetab[BOOL].t_tspec = BOOL; | | 105 | typetab[BOOL].t_tspec = BOOL; |
106 | typetab[CHAR].t_tspec = CHAR; | | 106 | typetab[CHAR].t_tspec = CHAR; |
107 | typetab[SCHAR].t_tspec = SCHAR; | | 107 | typetab[SCHAR].t_tspec = SCHAR; |
108 | typetab[UCHAR].t_tspec = UCHAR; | | 108 | typetab[UCHAR].t_tspec = UCHAR; |
109 | typetab[SHORT].t_tspec = SHORT; | | 109 | typetab[SHORT].t_tspec = SHORT; |
110 | typetab[USHORT].t_tspec = USHORT; | | 110 | typetab[USHORT].t_tspec = USHORT; |
111 | typetab[INT].t_tspec = INT; | | 111 | typetab[INT].t_tspec = INT; |
112 | typetab[UINT].t_tspec = UINT; | | 112 | typetab[UINT].t_tspec = UINT; |
113 | typetab[LONG].t_tspec = LONG; | | 113 | typetab[LONG].t_tspec = LONG; |
114 | typetab[ULONG].t_tspec = ULONG; | | 114 | typetab[ULONG].t_tspec = ULONG; |
115 | typetab[QUAD].t_tspec = QUAD; | | 115 | typetab[QUAD].t_tspec = QUAD; |
116 | typetab[UQUAD].t_tspec = UQUAD; | | 116 | typetab[UQUAD].t_tspec = UQUAD; |
117 | typetab[FLOAT].t_tspec = FLOAT; | | 117 | typetab[FLOAT].t_tspec = FLOAT; |
118 | typetab[DOUBLE].t_tspec = DOUBLE; | | 118 | typetab[DOUBLE].t_tspec = DOUBLE; |
119 | typetab[LDOUBLE].t_tspec = LDOUBLE; | | 119 | typetab[LDOUBLE].t_tspec = LDOUBLE; |
120 | typetab[FCOMPLEX].t_tspec = FCOMPLEX; | | 120 | typetab[FCOMPLEX].t_tspec = FCOMPLEX; |
121 | typetab[DCOMPLEX].t_tspec = DCOMPLEX; | | 121 | typetab[DCOMPLEX].t_tspec = DCOMPLEX; |
122 | typetab[LCOMPLEX].t_tspec = LCOMPLEX; | | 122 | typetab[LCOMPLEX].t_tspec = LCOMPLEX; |
123 | typetab[COMPLEX].t_tspec = COMPLEX; | | 123 | typetab[COMPLEX].t_tspec = COMPLEX; |
124 | typetab[VOID].t_tspec = VOID; | | 124 | typetab[VOID].t_tspec = VOID; |
125 | /* | | 125 | /* |
126 | * Next two are not real types. They are only used by the parser | | 126 | * Next two are not real types. They are only used by the parser |
127 | * to return keywords "signed" and "unsigned" | | 127 | * to return keywords "signed" and "unsigned" |
128 | */ | | 128 | */ |
129 | typetab[SIGNED].t_tspec = SIGNED; | | 129 | typetab[SIGNED].t_tspec = SIGNED; |
130 | typetab[UNSIGN].t_tspec = UNSIGN; | | 130 | typetab[UNSIGN].t_tspec = UNSIGN; |
131 | } | | 131 | } |
132 | | | 132 | |
133 | /* | | 133 | /* |
134 | * Returns a shared type structure vor arithmetic types and void. | | 134 | * Returns a shared type structure vor arithmetic types and void. |
135 | * | | 135 | * |
136 | * It's important do duplicate this structure (using duptyp() or tdupdyp()) | | 136 | * It's important do duplicate this structure (using duptyp() or tdupdyp()) |
137 | * if it is to be modified (adding qualifiers or anything else). | | 137 | * if it is to be modified (adding qualifiers or anything else). |
138 | */ | | 138 | */ |
139 | type_t * | | 139 | type_t * |
140 | gettyp(tspec_t t) | | 140 | gettyp(tspec_t t) |
141 | { | | 141 | { |
142 | | | 142 | |
143 | return (&typetab[t]); | | 143 | return (&typetab[t]); |
144 | } | | 144 | } |
145 | | | 145 | |
146 | type_t * | | 146 | type_t * |
147 | duptyp(const type_t *tp) | | 147 | duptyp(const type_t *tp) |
148 | { | | 148 | { |
149 | type_t *ntp; | | 149 | type_t *ntp; |
150 | | | 150 | |
151 | ntp = getblk(sizeof (type_t)); | | 151 | ntp = getblk(sizeof (type_t)); |
152 | STRUCT_ASSIGN(*ntp, *tp); | | 152 | STRUCT_ASSIGN(*ntp, *tp); |
153 | return (ntp); | | 153 | return (ntp); |
154 | } | | 154 | } |
155 | | | 155 | |
156 | /* | | 156 | /* |
157 | * Use tduptyp() instead of duptyp() inside expressions (if the | | 157 | * Use tduptyp() instead of duptyp() inside expressions (if the |
158 | * allocated memory should be freed after the expr). | | 158 | * allocated memory should be freed after the expr). |
159 | */ | | 159 | */ |
160 | type_t * | | 160 | type_t * |
161 | tduptyp(const type_t *tp) | | 161 | tduptyp(const type_t *tp) |
162 | { | | 162 | { |
163 | type_t *ntp; | | 163 | type_t *ntp; |
164 | | | 164 | |
165 | ntp = tgetblk(sizeof (type_t)); | | 165 | ntp = tgetblk(sizeof (type_t)); |
166 | STRUCT_ASSIGN(*ntp, *tp); | | 166 | STRUCT_ASSIGN(*ntp, *tp); |
167 | return (ntp); | | 167 | return (ntp); |
168 | } | | 168 | } |
169 | | | 169 | |
170 | /* | | 170 | /* |
171 | * Returns 1 if the argument is void or an incomplete array, | | 171 | * Returns 1 if the argument is void or an incomplete array, |
172 | * struct, union or enum type. | | 172 | * struct, union or enum type. |
173 | */ | | 173 | */ |
174 | int | | 174 | int |
175 | incompl(type_t *tp) | | 175 | incompl(type_t *tp) |
176 | { | | 176 | { |
177 | tspec_t t; | | 177 | tspec_t t; |
178 | | | 178 | |
179 | if ((t = tp->t_tspec) == VOID) { | | 179 | if ((t = tp->t_tspec) == VOID) { |
180 | return (1); | | 180 | return (1); |
181 | } else if (t == ARRAY) { | | 181 | } else if (t == ARRAY) { |
182 | return (tp->t_aincompl); | | 182 | return (tp->t_aincompl); |
183 | } else if (t == STRUCT || t == UNION) { | | 183 | } else if (t == STRUCT || t == UNION) { |
184 | return (tp->t_str->sincompl); | | 184 | return (tp->t_str->sincompl); |
185 | } else if (t == ENUM) { | | 185 | } else if (t == ENUM) { |
186 | return (tp->t_enum->eincompl); | | 186 | return (tp->t_enum->eincompl); |
187 | } | | 187 | } |
188 | return (0); | | 188 | return (0); |
189 | } | | 189 | } |
190 | | | 190 | |
191 | /* | | 191 | /* |
192 | * Set the flag for (in)complete array, struct, union or enum | | 192 | * Set the flag for (in)complete array, struct, union or enum |
193 | * types. | | 193 | * types. |
194 | */ | | 194 | */ |
195 | void | | 195 | void |
196 | setcompl(type_t *tp, int ic) | | 196 | setcompl(type_t *tp, int ic) |
197 | { | | 197 | { |
198 | tspec_t t; | | 198 | tspec_t t; |
199 | | | 199 | |
200 | if ((t = tp->t_tspec) == ARRAY) { | | 200 | if ((t = tp->t_tspec) == ARRAY) { |
201 | tp->t_aincompl = ic; | | 201 | tp->t_aincompl = ic; |
202 | } else if (t == STRUCT || t == UNION) { | | 202 | } else if (t == STRUCT || t == UNION) { |
203 | tp->t_str->sincompl = ic; | | 203 | tp->t_str->sincompl = ic; |
204 | } else { | | 204 | } else { |
205 | if (t != ENUM) | | 205 | if (t != ENUM) |
206 | LERROR("setcompl()"); | | 206 | LERROR("setcompl()"); |
207 | tp->t_enum->eincompl = ic; | | 207 | tp->t_enum->eincompl = ic; |
208 | } | | 208 | } |
209 | } | | 209 | } |
210 | | | 210 | |
211 | /* | | 211 | /* |
212 | * Remember the storage class of the current declaration in dcs->d_scl | | 212 | * Remember the storage class of the current declaration in dcs->d_scl |
213 | * (the top element of the declaration stack) and detect multiple | | 213 | * (the top element of the declaration stack) and detect multiple |
214 | * storage classes. | | 214 | * storage classes. |
215 | */ | | 215 | */ |
216 | void | | 216 | void |
217 | addscl(scl_t sc) | | 217 | addscl(scl_t sc) |
218 | { | | 218 | { |
219 | | | 219 | |
220 | if (sc == INLINE) { | | 220 | if (sc == INLINE) { |
221 | if (dcs->d_inline) | | 221 | if (dcs->d_inline) |
222 | /* duplicate '%s' */ | | 222 | /* duplicate '%s' */ |
223 | warning(10, "inline"); | | 223 | warning(10, "inline"); |
224 | dcs->d_inline = 1; | | 224 | dcs->d_inline = 1; |
225 | return; | | 225 | return; |
226 | } | | 226 | } |
227 | if (dcs->d_type != NULL || dcs->d_atyp != NOTSPEC || | | 227 | if (dcs->d_type != NULL || dcs->d_atyp != NOTSPEC || |
228 | dcs->d_smod != NOTSPEC || dcs->d_lmod != NOTSPEC) { | | 228 | dcs->d_smod != NOTSPEC || dcs->d_lmod != NOTSPEC) { |
229 | /* storage class after type is obsolescent */ | | 229 | /* storage class after type is obsolescent */ |
230 | warning(83); | | 230 | warning(83); |
231 | } | | 231 | } |
232 | if (dcs->d_scl == NOSCL) { | | 232 | if (dcs->d_scl == NOSCL) { |
233 | dcs->d_scl = sc; | | 233 | dcs->d_scl = sc; |
234 | } else { | | 234 | } else { |
235 | /* | | 235 | /* |
236 | * multiple storage classes. An error will be reported in | | 236 | * multiple storage classes. An error will be reported in |
237 | * deftyp(). | | 237 | * deftyp(). |
238 | */ | | 238 | */ |
239 | dcs->d_mscl = 1; | | 239 | dcs->d_mscl = 1; |
240 | } | | 240 | } |
241 | } | | 241 | } |
242 | | | 242 | |
243 | /* | | 243 | /* |
244 | * Remember the type, modifier or typedef name returned by the parser | | 244 | * Remember the type, modifier or typedef name returned by the parser |
245 | * in *dcs (top element of decl stack). This information is used in | | 245 | * in *dcs (top element of decl stack). This information is used in |
246 | * deftyp() to build the type used for all declarators in this | | 246 | * deftyp() to build the type used for all declarators in this |
247 | * declaration. | | 247 | * declaration. |
248 | * | | 248 | * |
249 | * Is tp->t_typedef 1, the type comes from a previously defined typename. | | 249 | * Is tp->t_typedef 1, the type comes from a previously defined typename. |
250 | * Otherwise it comes from a type specifier (int, long, ...) or a | | 250 | * Otherwise it comes from a type specifier (int, long, ...) or a |
251 | * struct/union/enum tag. | | 251 | * struct/union/enum tag. |
252 | */ | | 252 | */ |
253 | void | | 253 | void |
254 | addtype(type_t *tp) | | 254 | addtype(type_t *tp) |
255 | { | | 255 | { |
256 | tspec_t t; | | 256 | tspec_t t; |
257 | #ifdef DEBUG | | 257 | #ifdef DEBUG |
258 | char buf[1024]; | | 258 | char buf[1024]; |
259 | printf("addtype %s\n", tyname(buf, sizeof(buf), tp)); | | 259 | printf("addtype %s\n", tyname(buf, sizeof(buf), tp)); |
260 | #endif | | 260 | #endif |
261 | if (tp->t_typedef) { | | 261 | if (tp->t_typedef) { |
262 | if (dcs->d_type != NULL || dcs->d_atyp != NOTSPEC || | | 262 | if (dcs->d_type != NULL || dcs->d_atyp != NOTSPEC || |
263 | dcs->d_lmod != NOTSPEC || dcs->d_smod != NOTSPEC) { | | 263 | dcs->d_lmod != NOTSPEC || dcs->d_smod != NOTSPEC) { |
264 | /* | | 264 | /* |
265 | * something like "typedef int a; int a b;" | | 265 | * something like "typedef int a; int a b;" |
266 | * This should not happen with current grammar. | | 266 | * This should not happen with current grammar. |
267 | */ | | 267 | */ |
268 | LERROR("addtype()"); | | 268 | LERROR("addtype()"); |
269 | } | | 269 | } |
270 | dcs->d_type = tp; | | 270 | dcs->d_type = tp; |
271 | return; | | 271 | return; |
272 | } | | 272 | } |
273 | | | 273 | |
274 | t = tp->t_tspec; | | 274 | t = tp->t_tspec; |
275 | | | 275 | |
276 | if (t == STRUCT || t == UNION || t == ENUM) { | | 276 | if (t == STRUCT || t == UNION || t == ENUM) { |
277 | /* | | 277 | /* |
278 | * something like "int struct a ..." | | 278 | * something like "int struct a ..." |
279 | * struct/union/enum with anything else is not allowed | | 279 | * struct/union/enum with anything else is not allowed |
280 | */ | | 280 | */ |
281 | if (dcs->d_type != NULL || dcs->d_atyp != NOTSPEC || | | 281 | if (dcs->d_type != NULL || dcs->d_atyp != NOTSPEC || |
282 | dcs->d_lmod != NOTSPEC || dcs->d_smod != NOTSPEC) { | | 282 | dcs->d_lmod != NOTSPEC || dcs->d_smod != NOTSPEC) { |
283 | /* | | 283 | /* |
284 | * remember that an error must be reported in | | 284 | * remember that an error must be reported in |
285 | * deftyp(). | | 285 | * deftyp(). |
286 | */ | | 286 | */ |
287 | dcs->d_terr = 1; | | 287 | dcs->d_terr = 1; |
288 | dcs->d_atyp = dcs->d_lmod = dcs->d_smod = NOTSPEC; | | 288 | dcs->d_atyp = dcs->d_lmod = dcs->d_smod = NOTSPEC; |
289 | } | | 289 | } |
290 | dcs->d_type = tp; | | 290 | dcs->d_type = tp; |
291 | return; | | 291 | return; |
292 | } | | 292 | } |
293 | | | 293 | |
294 | if (dcs->d_type != NULL && !dcs->d_type->t_typedef) { | | 294 | if (dcs->d_type != NULL && !dcs->d_type->t_typedef) { |
295 | /* | | 295 | /* |
296 | * something like "struct a int" | | 296 | * something like "struct a int" |
297 | * struct/union/enum with anything else is not allowed | | 297 | * struct/union/enum with anything else is not allowed |
298 | */ | | 298 | */ |
299 | dcs->d_terr = 1; | | 299 | dcs->d_terr = 1; |
300 | return; | | 300 | return; |
301 | } | | 301 | } |
302 | | | 302 | |
303 | if (t == COMPLEX) { | | 303 | if (t == COMPLEX) { |
304 | if (dcs->d_cmod == FLOAT) | | 304 | if (dcs->d_cmod == FLOAT) |
305 | t = FCOMPLEX; | | 305 | t = FCOMPLEX; |
306 | else if (dcs->d_cmod == DOUBLE) { | | 306 | else if (dcs->d_cmod == DOUBLE) { |
307 | t = DCOMPLEX; | | 307 | t = DCOMPLEX; |
308 | } else | | 308 | } else |
309 | error(308, basictyname(dcs->d_cmod)); | | 309 | error(308, basictyname(dcs->d_cmod)); |
310 | dcs->d_cmod = NOTSPEC; | | 310 | dcs->d_cmod = NOTSPEC; |
311 | } | | 311 | } |
312 | | | 312 | |
313 | if (t == LONG && dcs->d_lmod == LONG) { | | 313 | if (t == LONG && dcs->d_lmod == LONG) { |
314 | /* "long long" or "long ... long" */ | | 314 | /* "long long" or "long ... long" */ |
315 | t = QUAD; | | 315 | t = QUAD; |
316 | dcs->d_lmod = NOTSPEC; | | 316 | dcs->d_lmod = NOTSPEC; |
317 | if (!quadflg) | | 317 | if (!quadflg) |
318 | /* %s C does not support 'long long' */ | | 318 | /* %s C does not support 'long long' */ |
319 | (void)c99ism(265, tflag ? "traditional" : "c89"); | | 319 | (void)c99ism(265, tflag ? "traditional" : "c89"); |
320 | } | | 320 | } |
321 | | | 321 | |
322 | if (dcs->d_type != NULL && dcs->d_type->t_typedef) { | | 322 | if (dcs->d_type != NULL && dcs->d_type->t_typedef) { |
323 | /* something like "typedef int a; a long ..." */ | | 323 | /* something like "typedef int a; a long ..." */ |
324 | dcs->d_type = tdeferr(dcs->d_type, t); | | 324 | dcs->d_type = tdeferr(dcs->d_type, t); |
325 | return; | | 325 | return; |
326 | } | | 326 | } |
327 | | | 327 | |
328 | /* now it can be only a combination of arithmetic types and void */ | | 328 | /* now it can be only a combination of arithmetic types and void */ |
329 | if (t == SIGNED || t == UNSIGN) { | | 329 | if (t == SIGNED || t == UNSIGN) { |
330 | /* remember specifiers "signed" & "unsigned" in dcs->d_smod */ | | 330 | /* remember specifiers "signed" & "unsigned" in dcs->d_smod */ |
331 | if (dcs->d_smod != NOTSPEC) | | 331 | if (dcs->d_smod != NOTSPEC) |
332 | /* | | 332 | /* |
333 | * more than one "signed" and/or "unsigned"; print | | 333 | * more than one "signed" and/or "unsigned"; print |
334 | * an error in deftyp() | | 334 | * an error in deftyp() |
335 | */ | | 335 | */ |
336 | dcs->d_terr = 1; | | 336 | dcs->d_terr = 1; |
337 | dcs->d_smod = t; | | 337 | dcs->d_smod = t; |
338 | } else if (t == SHORT || t == LONG || t == QUAD) { | | 338 | } else if (t == SHORT || t == LONG || t == QUAD) { |
339 | /* | | 339 | /* |
340 | * remember specifiers "short", "long" and "long long" in | | 340 | * remember specifiers "short", "long" and "long long" in |
341 | * dcs->d_lmod | | 341 | * dcs->d_lmod |
342 | */ | | 342 | */ |
343 | if (dcs->d_lmod != NOTSPEC) | | 343 | if (dcs->d_lmod != NOTSPEC) |
344 | /* more than one, print error in deftyp() */ | | 344 | /* more than one, print error in deftyp() */ |
345 | dcs->d_terr = 1; | | 345 | dcs->d_terr = 1; |
346 | dcs->d_lmod = t; | | 346 | dcs->d_lmod = t; |
347 | } else if (t == FLOAT || t == DOUBLE) { | | 347 | } else if (t == FLOAT || t == DOUBLE) { |
348 | if (dcs->d_lmod == NOTSPEC || dcs->d_lmod == LONG) { | | 348 | if (dcs->d_lmod == NOTSPEC || dcs->d_lmod == LONG) { |
349 | if (dcs->d_cmod != NOTSPEC | | 349 | if (dcs->d_cmod != NOTSPEC |
350 | || (t == FLOAT && dcs->d_lmod == LONG)) | | 350 | || (t == FLOAT && dcs->d_lmod == LONG)) |
351 | dcs->d_terr = 1; | | 351 | dcs->d_terr = 1; |
352 | dcs->d_cmod = t; | | 352 | dcs->d_cmod = t; |
353 | } else { | | 353 | } else { |
354 | if (dcs->d_atyp != NOTSPEC) | | 354 | if (dcs->d_atyp != NOTSPEC) |
355 | dcs->d_terr = 1; | | 355 | dcs->d_terr = 1; |
356 | dcs->d_atyp = t; | | 356 | dcs->d_atyp = t; |
357 | } | | 357 | } |
358 | } else { | | 358 | } else { |
359 | /* | | 359 | /* |
360 | * remember specifiers "void", "char", "int", | | 360 | * remember specifiers "void", "char", "int", |
361 | * or "_Complex" int dcs->d_atyp | | 361 | * or "_Complex" int dcs->d_atyp |
362 | */ | | 362 | */ |
363 | if (dcs->d_atyp != NOTSPEC) | | 363 | if (dcs->d_atyp != NOTSPEC) |
364 | /* more than one, print error in deftyp() */ | | 364 | /* more than one, print error in deftyp() */ |
365 | dcs->d_terr = 1; | | 365 | dcs->d_terr = 1; |
366 | dcs->d_atyp = t; | | 366 | dcs->d_atyp = t; |
367 | } | | 367 | } |
368 | } | | 368 | } |
369 | | | 369 | |
370 | /* | | 370 | /* |
371 | * called if a list of declaration specifiers contains a typedef name | | 371 | * called if a list of declaration specifiers contains a typedef name |
372 | * and other specifiers (except struct, union, enum, typedef name) | | 372 | * and other specifiers (except struct, union, enum, typedef name) |
373 | */ | | 373 | */ |
374 | static type_t * | | 374 | static type_t * |
375 | tdeferr(type_t *td, tspec_t t) | | 375 | tdeferr(type_t *td, tspec_t t) |
376 | { | | 376 | { |
377 | tspec_t t2; | | 377 | tspec_t t2; |
378 | | | 378 | |
379 | t2 = td->t_tspec; | | 379 | t2 = td->t_tspec; |
380 | | | 380 | |
381 | switch (t) { | | 381 | switch (t) { |
382 | case SIGNED: | | 382 | case SIGNED: |
383 | case UNSIGN: | | 383 | case UNSIGN: |
384 | if (t2 == CHAR || t2 == SHORT || t2 == INT || t2 == LONG || | | 384 | if (t2 == CHAR || t2 == SHORT || t2 == INT || t2 == LONG || |
385 | t2 == QUAD) { | | 385 | t2 == QUAD) { |
386 | if (!tflag) | | 386 | if (!tflag) |
387 | /* modifying typedef with ... */ | | 387 | /* modifying typedef with ... */ |
388 | warning(5, ttab[t].tt_name); | | 388 | warning(5, ttab[t].tt_name); |
389 | td = duptyp(gettyp(mrgtspec(t2, t))); | | 389 | td = duptyp(gettyp(mrgtspec(t2, t))); |
390 | td->t_typedef = 1; | | 390 | td->t_typedef = 1; |
391 | return (td); | | 391 | return (td); |
392 | } | | 392 | } |
393 | break; | | 393 | break; |
394 | case SHORT: | | 394 | case SHORT: |
395 | if (t2 == INT || t2 == UINT) { | | 395 | if (t2 == INT || t2 == UINT) { |
396 | /* modifying typedef with ... */ | | 396 | /* modifying typedef with ... */ |
397 | warning(5, "short"); | | 397 | warning(5, "short"); |
398 | td = duptyp(gettyp(t2 == INT ? SHORT : USHORT)); | | 398 | td = duptyp(gettyp(t2 == INT ? SHORT : USHORT)); |
399 | td->t_typedef = 1; | | 399 | td->t_typedef = 1; |
400 | return (td); | | 400 | return (td); |
401 | } | | 401 | } |
402 | break; | | 402 | break; |
403 | case LONG: | | 403 | case LONG: |
404 | if (t2 == INT || t2 == UINT || t2 == LONG || t2 == ULONG || | | 404 | if (t2 == INT || t2 == UINT || t2 == LONG || t2 == ULONG || |
405 | t2 == FLOAT || t2 == DOUBLE || t2 == DCOMPLEX) { | | 405 | t2 == FLOAT || t2 == DOUBLE || t2 == DCOMPLEX) { |
406 | /* modifying typedef with ... */ | | 406 | /* modifying typedef with ... */ |
407 | warning(5, "long"); | | 407 | warning(5, "long"); |
408 | if (t2 == INT) { | | 408 | if (t2 == INT) { |
409 | td = gettyp(LONG); | | 409 | td = gettyp(LONG); |
410 | } else if (t2 == UINT) { | | 410 | } else if (t2 == UINT) { |
411 | td = gettyp(ULONG); | | 411 | td = gettyp(ULONG); |
412 | } else if (t2 == LONG) { | | 412 | } else if (t2 == LONG) { |
413 | td = gettyp(QUAD); | | 413 | td = gettyp(QUAD); |
414 | } else if (t2 == ULONG) { | | 414 | } else if (t2 == ULONG) { |
415 | td = gettyp(UQUAD); | | 415 | td = gettyp(UQUAD); |
416 | } else if (t2 == FLOAT) { | | 416 | } else if (t2 == FLOAT) { |
417 | td = gettyp(DOUBLE); | | 417 | td = gettyp(DOUBLE); |
418 | } else if (t2 == DOUBLE) { | | 418 | } else if (t2 == DOUBLE) { |
419 | td = gettyp(LDOUBLE); | | 419 | td = gettyp(LDOUBLE); |
420 | } else if (t2 == DCOMPLEX) { | | 420 | } else if (t2 == DCOMPLEX) { |
421 | td = gettyp(LCOMPLEX); | | 421 | td = gettyp(LCOMPLEX); |
422 | } | | 422 | } |
423 | td = duptyp(td); | | 423 | td = duptyp(td); |
424 | td->t_typedef = 1; | | 424 | td->t_typedef = 1; |
425 | return (td); | | 425 | return (td); |
426 | } | | 426 | } |
427 | break; | | 427 | break; |
428 | /* LINTED (enumeration values not handled in switch) */ | | 428 | /* LINTED (enumeration values not handled in switch) */ |
429 | case NOTSPEC: | | 429 | case NOTSPEC: |
430 | case USHORT: | | 430 | case USHORT: |
431 | case UCHAR: | | 431 | case UCHAR: |
432 | case SCHAR: | | 432 | case SCHAR: |
433 | case CHAR: | | 433 | case CHAR: |
434 | case BOOL: | | 434 | case BOOL: |
435 | case FUNC: | | 435 | case FUNC: |
436 | case ARRAY: | | 436 | case ARRAY: |
437 | case PTR: | | 437 | case PTR: |
438 | case ENUM: | | 438 | case ENUM: |
439 | case UNION: | | 439 | case UNION: |
440 | case STRUCT: | | 440 | case STRUCT: |
441 | case VOID: | | 441 | case VOID: |
442 | case LDOUBLE: | | 442 | case LDOUBLE: |
443 | case FLOAT: | | 443 | case FLOAT: |
444 | case DOUBLE: | | 444 | case DOUBLE: |
445 | case UQUAD: | | 445 | case UQUAD: |
446 | case QUAD: | | 446 | case QUAD: |
447 | case ULONG: | | 447 | case ULONG: |
448 | case UINT: | | 448 | case UINT: |
449 | case INT: | | 449 | case INT: |
450 | case FCOMPLEX: | | 450 | case FCOMPLEX: |
451 | case DCOMPLEX: | | 451 | case DCOMPLEX: |
452 | case LCOMPLEX: | | 452 | case LCOMPLEX: |
453 | case COMPLEX: | | 453 | case COMPLEX: |
454 | break; | | 454 | break; |
455 | | | 455 | |
456 | case NTSPEC: /* this value unused */ | | 456 | case NTSPEC: /* this value unused */ |
457 | break; | | 457 | break; |
458 | } | | 458 | } |
459 | | | 459 | |
460 | /* Anything other is not accepted. */ | | 460 | /* Anything other is not accepted. */ |
461 | | | 461 | |
462 | dcs->d_terr = 1; | | 462 | dcs->d_terr = 1; |
463 | return (td); | | 463 | return (td); |
464 | } | | 464 | } |
465 | | | 465 | |
466 | /* | | 466 | /* |
467 | * Remember the symbol of a typedef name (2nd arg) in a struct, union | | 467 | * Remember the symbol of a typedef name (2nd arg) in a struct, union |
468 | * or enum tag if the typedef name is the first defined for this tag. | | 468 | * or enum tag if the typedef name is the first defined for this tag. |
469 | * | | 469 | * |
470 | * If the tag is unnamed, the typdef name is used for identification | | 470 | * If the tag is unnamed, the typdef name is used for identification |
471 | * of this tag in lint2. Although its possible that more than one typedef | | 471 | * of this tag in lint2. Although its possible that more than one typedef |
472 | * name is defined for one tag, the first name defined should be unique | | 472 | * name is defined for one tag, the first name defined should be unique |
473 | * if the tag is unnamed. | | 473 | * if the tag is unnamed. |
474 | */ | | 474 | */ |
475 | static void | | 475 | static void |
476 | settdsym(type_t *tp, sym_t *sym) | | 476 | settdsym(type_t *tp, sym_t *sym) |
477 | { | | 477 | { |
478 | tspec_t t; | | 478 | tspec_t t; |
479 | | | 479 | |
480 | if ((t = tp->t_tspec) == STRUCT || t == UNION) { | | 480 | if ((t = tp->t_tspec) == STRUCT || t == UNION) { |
481 | if (tp->t_str->stdef == NULL) | | 481 | if (tp->t_str->stdef == NULL) |
482 | tp->t_str->stdef = sym; | | 482 | tp->t_str->stdef = sym; |
483 | } else if (t == ENUM) { | | 483 | } else if (t == ENUM) { |
484 | if (tp->t_enum->etdef == NULL) | | 484 | if (tp->t_enum->etdef == NULL) |
485 | tp->t_enum->etdef = sym; | | 485 | tp->t_enum->etdef = sym; |
486 | } | | 486 | } |
487 | } | | 487 | } |
488 | | | 488 | |
489 | static void | | 489 | static void |
490 | setpackedsize(type_t *tp) | | 490 | setpackedsize(type_t *tp) |
491 | { | | 491 | { |
492 | str_t *sp; | | 492 | str_t *sp; |
493 | sym_t *mem; | | 493 | sym_t *mem; |
494 | char buf[256]; | | 494 | char buf[256]; |
495 | | | 495 | |
496 | switch (tp->t_tspec) { | | 496 | switch (tp->t_tspec) { |
497 | case STRUCT: | | 497 | case STRUCT: |
498 | sp = tp->t_str; | | | |
499 | sp->size = 0; | | | |
500 | for (mem = sp->memb; mem != NULL; mem = mem->s_nxt) { | | | |
501 | size_t x = (size_t)tsize(mem->s_type); | | | |
502 | sp->size += x; | | | |
503 | } | | | |
504 | break; | | | |
505 | case UNION: | | 498 | case UNION: |
506 | sp = tp->t_str; | | 499 | sp = tp->t_str; |
507 | sp->size = 0; | | 500 | sp->size = 0; |
508 | for (mem = sp->memb; mem != NULL; mem = mem->s_nxt) { | | 501 | for (mem = sp->memb; mem != NULL; mem = mem->s_nxt) { |
| | | 502 | if (mem->s_type->t_isfield) { |
| | | 503 | size_t len = mem->s_type->t_flen; |
| | | 504 | while (mem && mem->s_type->t_isfield) { |
| | | 505 | len += mem->s_type->t_flen; |
| | | 506 | mem = mem->s_nxt; |
| | | 507 | } |
| | | 508 | len = ((len + INT_SIZE - 1) / |
| | | 509 | INT_SIZE) * INT_SIZE; |
| | | 510 | sp->size += len; |
| | | 511 | if (mem == NULL) |
| | | 512 | break; |
| | | 513 | } |
509 | size_t x = (size_t)tsize(mem->s_type); | | 514 | size_t x = (size_t)tsize(mem->s_type); |
510 | if (x > sp->size) | | 515 | if (tp->t_tspec == STRUCT) |
| | | 516 | sp->size += x; |
| | | 517 | else if (x > sp->size) |
511 | sp->size = x; | | 518 | sp->size = x; |
512 | } | | 519 | } |
513 | break; | | 520 | break; |
514 | default: | | 521 | default: |
515 | warning(326, "packed", tyname(buf, sizeof(buf), tp)); | | 522 | warning(326, "packed", tyname(buf, sizeof(buf), tp)); |
516 | break; | | 523 | break; |
517 | } | | 524 | } |
518 | } | | 525 | } |
519 | | | 526 | |
520 | void | | 527 | void |
521 | addpacked(void) | | 528 | addpacked(void) |
522 | { | | 529 | { |
523 | if (dcs->d_type == NULL) | | 530 | if (dcs->d_type == NULL) |
524 | dcs->d_ispacked = 1; | | 531 | dcs->d_ispacked = 1; |
525 | else | | 532 | else |
526 | setpackedsize(dcs->d_type); | | 533 | setpackedsize(dcs->d_type); |
527 | } | | 534 | } |
528 | | | 535 | |
529 | /* | | 536 | /* |
530 | * Remember a qualifier which is part of the declaration specifiers | | 537 | * Remember a qualifier which is part of the declaration specifiers |
531 | * (and not the declarator) in the top element of the declaration stack. | | 538 | * (and not the declarator) in the top element of the declaration stack. |
532 | * Also detect multiple qualifiers of the same kind. | | 539 | * Also detect multiple qualifiers of the same kind. |
533 | | | 540 | |
534 | * The remembered qualifier is used by deftyp() to construct the type | | 541 | * The remembered qualifier is used by deftyp() to construct the type |
535 | * for all declarators. | | 542 | * for all declarators. |
536 | */ | | 543 | */ |
537 | void | | 544 | void |
538 | addqual(tqual_t q) | | 545 | addqual(tqual_t q) |
539 | { | | 546 | { |
540 | | | 547 | |
541 | if (q == CONST) { | | 548 | if (q == CONST) { |
542 | if (dcs->d_const) { | | 549 | if (dcs->d_const) { |
543 | /* duplicate "%s" */ | | 550 | /* duplicate "%s" */ |
544 | warning(10, "const"); | | 551 | warning(10, "const"); |
545 | } | | 552 | } |
546 | dcs->d_const = 1; | | 553 | dcs->d_const = 1; |
547 | } else { | | 554 | } else { |
548 | if (q != VOLATILE) | | 555 | if (q != VOLATILE) |
549 | LERROR("addqual()"); | | 556 | LERROR("addqual()"); |
550 | if (dcs->d_volatile) { | | 557 | if (dcs->d_volatile) { |
551 | /* duplicate "%s" */ | | 558 | /* duplicate "%s" */ |
552 | warning(10, "volatile"); | | 559 | warning(10, "volatile"); |
553 | } | | 560 | } |
554 | dcs->d_volatile = 1; | | 561 | dcs->d_volatile = 1; |
555 | } | | 562 | } |
556 | } | | 563 | } |
557 | | | 564 | |
558 | /* | | 565 | /* |
559 | * Go to the next declaration level (structs, nested structs, blocks, | | 566 | * Go to the next declaration level (structs, nested structs, blocks, |
560 | * argument declaration lists ...) | | 567 | * argument declaration lists ...) |
561 | */ | | 568 | */ |
562 | void | | 569 | void |
563 | pushdecl(scl_t sc) | | 570 | pushdecl(scl_t sc) |
564 | { | | 571 | { |
565 | dinfo_t *di; | | 572 | dinfo_t *di; |
566 | | | 573 | |
567 | /* put a new element on the declaration stack */ | | 574 | /* put a new element on the declaration stack */ |
568 | di = xcalloc(1, sizeof (dinfo_t)); | | 575 | di = xcalloc(1, sizeof (dinfo_t)); |
569 | di->d_nxt = dcs; | | 576 | di->d_nxt = dcs; |
570 | dcs = di; | | 577 | dcs = di; |
571 | di->d_ctx = sc; | | 578 | di->d_ctx = sc; |
572 | di->d_ldlsym = &di->d_dlsyms; | | 579 | di->d_ldlsym = &di->d_dlsyms; |
573 | if (dflag) | | 580 | if (dflag) |
574 | (void)printf("pushdecl(%p %d)\n", dcs, (int)sc); | | 581 | (void)printf("pushdecl(%p %d)\n", dcs, (int)sc); |
575 | | | 582 | |
576 | } | | 583 | } |
577 | | | 584 | |
578 | /* | | 585 | /* |
579 | * Go back to previous declaration level | | 586 | * Go back to previous declaration level |
580 | */ | | 587 | */ |
581 | void | | 588 | void |
582 | popdecl(void) | | 589 | popdecl(void) |
583 | { | | 590 | { |
584 | dinfo_t *di; | | 591 | dinfo_t *di; |
585 | | | 592 | |
586 | if (dflag) | | 593 | if (dflag) |
587 | (void)printf("popdecl(%p %d)\n", dcs, (int)dcs->d_ctx); | | 594 | (void)printf("popdecl(%p %d)\n", dcs, (int)dcs->d_ctx); |
588 | | | 595 | |
589 | if (dcs->d_nxt == NULL) | | 596 | if (dcs->d_nxt == NULL) |
590 | LERROR("popdecl()"); | | 597 | LERROR("popdecl()"); |
591 | di = dcs; | | 598 | di = dcs; |
592 | dcs = di->d_nxt; | | 599 | dcs = di->d_nxt; |
593 | switch (di->d_ctx) { | | 600 | switch (di->d_ctx) { |
594 | case EXTERN: | | 601 | case EXTERN: |
595 | /* there is nothing after external declarations */ | | 602 | /* there is nothing after external declarations */ |
596 | LERROR("popdecl()"); | | 603 | LERROR("popdecl()"); |
597 | /* NOTREACHED */ | | 604 | /* NOTREACHED */ |
598 | case MOS: | | 605 | case MOS: |
599 | case MOU: | | 606 | case MOU: |
600 | case ENUMCON: | | 607 | case ENUMCON: |
601 | /* | | 608 | /* |
602 | * Symbols declared in (nested) structs or enums are | | 609 | * Symbols declared in (nested) structs or enums are |
603 | * part of the next level (they are removed from the | | 610 | * part of the next level (they are removed from the |
604 | * symbol table if the symbols of the outher level are | | 611 | * symbol table if the symbols of the outher level are |
605 | * removed) | | 612 | * removed) |
606 | */ | | 613 | */ |
607 | if ((*dcs->d_ldlsym = di->d_dlsyms) != NULL) | | 614 | if ((*dcs->d_ldlsym = di->d_dlsyms) != NULL) |
608 | dcs->d_ldlsym = di->d_ldlsym; | | 615 | dcs->d_ldlsym = di->d_ldlsym; |
609 | break; | | 616 | break; |
610 | case ARG: | | 617 | case ARG: |
611 | /* | | 618 | /* |
612 | * All symbols in dcs->d_dlsyms are introduced in old style | | 619 | * All symbols in dcs->d_dlsyms are introduced in old style |
613 | * argument declarations (it's not clean, but possible). | | 620 | * argument declarations (it's not clean, but possible). |
614 | * They are appended to the list of symbols declared in | | 621 | * They are appended to the list of symbols declared in |
615 | * an old style argument identifier list or a new style | | 622 | * an old style argument identifier list or a new style |
616 | * parameter type list. | | 623 | * parameter type list. |
617 | */ | | 624 | */ |
618 | if (di->d_dlsyms != NULL) { | | 625 | if (di->d_dlsyms != NULL) { |
619 | *di->d_ldlsym = dcs->d_fpsyms; | | 626 | *di->d_ldlsym = dcs->d_fpsyms; |
620 | dcs->d_fpsyms = di->d_dlsyms; | | 627 | dcs->d_fpsyms = di->d_dlsyms; |
621 | } | | 628 | } |
622 | break; | | 629 | break; |
623 | case ABSTRACT: | | 630 | case ABSTRACT: |
624 | /* | | 631 | /* |
625 | * casts and sizeof | | 632 | * casts and sizeof |
626 | * Append all symbols declared in the abstract declaration | | 633 | * Append all symbols declared in the abstract declaration |
627 | * to the list of symbols declared in the surounding decl. | | 634 | * to the list of symbols declared in the surounding decl. |
628 | * or block. | | 635 | * or block. |
629 | * XXX I'm not sure whether they should be removed from the | | 636 | * XXX I'm not sure whether they should be removed from the |
630 | * symbol table now or later. | | 637 | * symbol table now or later. |
631 | */ | | 638 | */ |
632 | if ((*dcs->d_ldlsym = di->d_dlsyms) != NULL) | | 639 | if ((*dcs->d_ldlsym = di->d_dlsyms) != NULL) |
633 | dcs->d_ldlsym = di->d_ldlsym; | | 640 | dcs->d_ldlsym = di->d_ldlsym; |
634 | break; | | 641 | break; |
635 | case AUTO: | | 642 | case AUTO: |
636 | /* check usage of local vars */ | | 643 | /* check usage of local vars */ |
637 | chkusage(di); | | 644 | chkusage(di); |
638 | /* FALLTHROUGH */ | | 645 | /* FALLTHROUGH */ |
639 | case PARG: | | 646 | case PARG: |
640 | /* usage of arguments will be checked by funcend() */ | | 647 | /* usage of arguments will be checked by funcend() */ |
641 | rmsyms(di->d_dlsyms); | | 648 | rmsyms(di->d_dlsyms); |
642 | break; | | 649 | break; |
643 | default: | | 650 | default: |
644 | LERROR("popdecl()"); | | 651 | LERROR("popdecl()"); |
645 | } | | 652 | } |
646 | free(di); | | 653 | free(di); |
647 | } | | 654 | } |
648 | | | 655 | |
649 | /* | | 656 | /* |
650 | * Set flag d_asm in all declaration stack elements up to the | | 657 | * Set flag d_asm in all declaration stack elements up to the |
651 | * outermost one. | | 658 | * outermost one. |
652 | * | | 659 | * |
653 | * This is used to mark compound statements which have, possibly in | | 660 | * This is used to mark compound statements which have, possibly in |
654 | * nested compound statements, asm statements. For these compound | | 661 | * nested compound statements, asm statements. For these compound |
655 | * statements no warnings about unused or unitialized variables are | | 662 | * statements no warnings about unused or unitialized variables are |
656 | * printed. | | 663 | * printed. |
657 | * | | 664 | * |
658 | * There is no need to clear d_asm in dinfo structs with context AUTO, | | 665 | * There is no need to clear d_asm in dinfo structs with context AUTO, |
659 | * because these structs are freed at the end of the compound statement. | | 666 | * because these structs are freed at the end of the compound statement. |
660 | * But it must be cleard in the outermost dinfo struct, which has | | 667 | * But it must be cleard in the outermost dinfo struct, which has |
661 | * context EXTERN. This could be done in clrtyp() and would work for | | 668 | * context EXTERN. This could be done in clrtyp() and would work for |
662 | * C, but not for C++ (due to mixed statements and declarations). Thus | | 669 | * C, but not for C++ (due to mixed statements and declarations). Thus |
663 | * we clear it in glclup(), which is used to do some cleanup after | | 670 | * we clear it in glclup(), which is used to do some cleanup after |
664 | * global declarations/definitions. | | 671 | * global declarations/definitions. |
665 | */ | | 672 | */ |
666 | void | | 673 | void |
667 | setasm(void) | | 674 | setasm(void) |
668 | { | | 675 | { |
669 | dinfo_t *di; | | 676 | dinfo_t *di; |
670 | | | 677 | |
671 | for (di = dcs; di != NULL; di = di->d_nxt) | | 678 | for (di = dcs; di != NULL; di = di->d_nxt) |
672 | di->d_asm = 1; | | 679 | di->d_asm = 1; |
673 | } | | 680 | } |
674 | | | 681 | |
675 | /* | | 682 | /* |
676 | * Clean all elements of the top element of declaration stack which | | 683 | * Clean all elements of the top element of declaration stack which |
677 | * will be used by the next declaration | | 684 | * will be used by the next declaration |
678 | */ | | 685 | */ |
679 | void | | 686 | void |
680 | clrtyp(void) | | 687 | clrtyp(void) |
681 | { | | 688 | { |
682 | | | 689 | |
683 | dcs->d_atyp = dcs->d_cmod = dcs->d_smod = dcs->d_lmod = NOTSPEC; | | 690 | dcs->d_atyp = dcs->d_cmod = dcs->d_smod = dcs->d_lmod = NOTSPEC; |
684 | dcs->d_scl = NOSCL; | | 691 | dcs->d_scl = NOSCL; |
685 | dcs->d_type = NULL; | | 692 | dcs->d_type = NULL; |
686 | dcs->d_const = dcs->d_volatile = 0; | | 693 | dcs->d_const = dcs->d_volatile = 0; |
687 | dcs->d_inline = 0; | | 694 | dcs->d_inline = 0; |
688 | dcs->d_mscl = dcs->d_terr = 0; | | 695 | dcs->d_mscl = dcs->d_terr = 0; |
689 | dcs->d_nedecl = 0; | | 696 | dcs->d_nedecl = 0; |
690 | dcs->d_notyp = 0; | | 697 | dcs->d_notyp = 0; |
691 | } | | 698 | } |
692 | | | 699 | |
693 | /* | | 700 | /* |
694 | * Create a type structure from the informations gathered in | | 701 | * Create a type structure from the informations gathered in |
695 | * the declaration stack. | | 702 | * the declaration stack. |
696 | * Complain about storage classes which are not possible in current | | 703 | * Complain about storage classes which are not possible in current |
697 | * context. | | 704 | * context. |
698 | */ | | 705 | */ |
699 | void | | 706 | void |
700 | deftyp(void) | | 707 | deftyp(void) |
701 | { | | 708 | { |
702 | tspec_t t, s, l, c; | | 709 | tspec_t t, s, l, c; |
703 | type_t *tp; | | 710 | type_t *tp; |
704 | scl_t scl; | | 711 | scl_t scl; |
705 | | | 712 | |
706 | t = dcs->d_atyp; /* BOOL, CHAR, INT, COMPLEX, VOID */ | | 713 | t = dcs->d_atyp; /* BOOL, CHAR, INT, COMPLEX, VOID */ |
707 | s = dcs->d_smod; /* SIGNED, UNSIGNED */ | | 714 | s = dcs->d_smod; /* SIGNED, UNSIGNED */ |
708 | l = dcs->d_lmod; /* SHORT, LONG, QUAD */ | | 715 | l = dcs->d_lmod; /* SHORT, LONG, QUAD */ |
709 | c = dcs->d_cmod; /* FLOAT, DOUBLE */ | | 716 | c = dcs->d_cmod; /* FLOAT, DOUBLE */ |
710 | tp = dcs->d_type; | | 717 | tp = dcs->d_type; |
711 | scl = dcs->d_scl; | | 718 | scl = dcs->d_scl; |
712 | | | 719 | |
713 | if (t == NOTSPEC && s == NOTSPEC && l == NOTSPEC && c == NOTSPEC && | | 720 | if (t == NOTSPEC && s == NOTSPEC && l == NOTSPEC && c == NOTSPEC && |
714 | tp == NULL) | | 721 | tp == NULL) |
715 | dcs->d_notyp = 1; | | 722 | dcs->d_notyp = 1; |
716 | if (t == NOTSPEC && s == NOTSPEC && (l == NOTSPEC || l == LONG) && | | 723 | if (t == NOTSPEC && s == NOTSPEC && (l == NOTSPEC || l == LONG) && |
717 | tp == NULL) | | 724 | tp == NULL) |
718 | t = c; | | 725 | t = c; |
719 | | | 726 | |
720 | if (tp != NULL && (t != NOTSPEC || s != NOTSPEC || l != NOTSPEC)) { | | 727 | if (tp != NULL && (t != NOTSPEC || s != NOTSPEC || l != NOTSPEC)) { |
721 | /* should never happen */ | | 728 | /* should never happen */ |
722 | LERROR("deftyp()"); | | 729 | LERROR("deftyp()"); |
723 | } | | 730 | } |
724 | | | 731 | |
725 | if (tp == NULL) { | | 732 | if (tp == NULL) { |
726 | switch (t) { | | 733 | switch (t) { |
727 | case BOOL: | | 734 | case BOOL: |
728 | break; | | 735 | break; |
729 | case NOTSPEC: | | 736 | case NOTSPEC: |
730 | t = INT; | | 737 | t = INT; |
731 | /* FALLTHROUGH */ | | 738 | /* FALLTHROUGH */ |
732 | case INT: | | 739 | case INT: |
733 | if (s == NOTSPEC) | | 740 | if (s == NOTSPEC) |
734 | s = SIGNED; | | 741 | s = SIGNED; |
735 | break; | | 742 | break; |
736 | case CHAR: | | 743 | case CHAR: |
737 | if (l != NOTSPEC) { | | 744 | if (l != NOTSPEC) { |
738 | dcs->d_terr = 1; | | 745 | dcs->d_terr = 1; |
739 | l = NOTSPEC; | | 746 | l = NOTSPEC; |
740 | } | | 747 | } |
741 | break; | | 748 | break; |
742 | case FLOAT: | | 749 | case FLOAT: |
743 | if (l == LONG) { | | 750 | if (l == LONG) { |
744 | l = NOTSPEC; | | 751 | l = NOTSPEC; |
745 | t = DOUBLE; | | 752 | t = DOUBLE; |
746 | if (!tflag) | | 753 | if (!tflag) |
747 | /* use 'double' instead of ... */ | | 754 | /* use 'double' instead of ... */ |
748 | warning(6); | | 755 | warning(6); |
749 | } | | 756 | } |
750 | break; | | 757 | break; |
751 | case DOUBLE: | | 758 | case DOUBLE: |
752 | if (l == LONG) { | | 759 | if (l == LONG) { |
753 | l = NOTSPEC; | | 760 | l = NOTSPEC; |
754 | t = LDOUBLE; | | 761 | t = LDOUBLE; |
755 | if (tflag) | | 762 | if (tflag) |
756 | /* 'long double' is illegal in ... */ | | 763 | /* 'long double' is illegal in ... */ |
757 | warning(266); | | 764 | warning(266); |
758 | } | | 765 | } |
759 | break; | | 766 | break; |
760 | case DCOMPLEX: | | 767 | case DCOMPLEX: |
761 | if (l == LONG) { | | 768 | if (l == LONG) { |
762 | l = NOTSPEC; | | 769 | l = NOTSPEC; |
763 | t = LCOMPLEX; | | 770 | t = LCOMPLEX; |
764 | if (tflag) | | 771 | if (tflag) |
765 | /* 'long double' is illegal in ... */ | | 772 | /* 'long double' is illegal in ... */ |
766 | warning(266); | | 773 | warning(266); |
767 | } | | 774 | } |
768 | break; | | 775 | break; |
769 | case VOID: | | 776 | case VOID: |
770 | case FCOMPLEX: | | 777 | case FCOMPLEX: |
771 | case LCOMPLEX: | | 778 | case LCOMPLEX: |
772 | break; | | 779 | break; |
773 | default: | | 780 | default: |
774 | LERROR("deftyp()"); | | 781 | LERROR("deftyp()"); |
775 | } | | 782 | } |
776 | if (t != INT && t != CHAR && (s != NOTSPEC || l != NOTSPEC)) { | | 783 | if (t != INT && t != CHAR && (s != NOTSPEC || l != NOTSPEC)) { |
777 | dcs->d_terr = 1; | | 784 | dcs->d_terr = 1; |
778 | l = s = NOTSPEC; | | 785 | l = s = NOTSPEC; |
779 | } | | 786 | } |
780 | if (l != NOTSPEC) | | 787 | if (l != NOTSPEC) |
781 | t = l; | | 788 | t = l; |
782 | dcs->d_type = gettyp(mrgtspec(t, s)); | | 789 | dcs->d_type = gettyp(mrgtspec(t, s)); |
783 | } | | 790 | } |
784 | | | 791 | |
785 | if (dcs->d_mscl) { | | 792 | if (dcs->d_mscl) { |
786 | /* only one storage class allowed */ | | 793 | /* only one storage class allowed */ |
787 | error(7); | | 794 | error(7); |
788 | } | | 795 | } |
789 | if (dcs->d_terr) { | | 796 | if (dcs->d_terr) { |
790 | /* illegal type combination */ | | 797 | /* illegal type combination */ |
791 | error(4); | | 798 | error(4); |
792 | } | | 799 | } |
793 | | | 800 | |
794 | if (dcs->d_ctx == EXTERN) { | | 801 | if (dcs->d_ctx == EXTERN) { |
795 | if (scl == REG || scl == AUTO) { | | 802 | if (scl == REG || scl == AUTO) { |
796 | /* illegal storage class */ | | 803 | /* illegal storage class */ |
797 | error(8); | | 804 | error(8); |
798 | scl = NOSCL; | | 805 | scl = NOSCL; |
799 | } | | 806 | } |
800 | } else if (dcs->d_ctx == ARG || dcs->d_ctx == PARG) { | | 807 | } else if (dcs->d_ctx == ARG || dcs->d_ctx == PARG) { |
801 | if (scl != NOSCL && scl != REG) { | | 808 | if (scl != NOSCL && scl != REG) { |
802 | /* only "register" valid ... */ | | 809 | /* only "register" valid ... */ |
803 | error(9); | | 810 | error(9); |
804 | scl = NOSCL; | | 811 | scl = NOSCL; |
805 | } | | 812 | } |
806 | } | | 813 | } |
807 | | | 814 | |
808 | dcs->d_scl = scl; | | 815 | dcs->d_scl = scl; |
809 | | | 816 | |
810 | if (dcs->d_const && dcs->d_type->t_const) { | | 817 | if (dcs->d_const && dcs->d_type->t_const) { |
811 | if (!dcs->d_type->t_typedef) | | 818 | if (!dcs->d_type->t_typedef) |
812 | LERROR("deftyp()"); | | 819 | LERROR("deftyp()"); |
813 | /* typedef already qualified with "%s" */ | | 820 | /* typedef already qualified with "%s" */ |
814 | warning(68, "const"); | | 821 | warning(68, "const"); |
815 | } | | 822 | } |
816 | if (dcs->d_volatile && dcs->d_type->t_volatile) { | | 823 | if (dcs->d_volatile && dcs->d_type->t_volatile) { |
817 | if (!dcs->d_type->t_typedef) | | 824 | if (!dcs->d_type->t_typedef) |
818 | LERROR("deftyp()"); | | 825 | LERROR("deftyp()"); |
819 | /* typedef already qualified with "%s" */ | | 826 | /* typedef already qualified with "%s" */ |
820 | warning(68, "volatile"); | | 827 | warning(68, "volatile"); |
821 | } | | 828 | } |
822 | | | 829 | |
823 | if (dcs->d_const || dcs->d_volatile) { | | 830 | if (dcs->d_const || dcs->d_volatile) { |
824 | dcs->d_type = duptyp(dcs->d_type); | | 831 | dcs->d_type = duptyp(dcs->d_type); |
825 | dcs->d_type->t_const |= dcs->d_const; | | 832 | dcs->d_type->t_const |= dcs->d_const; |
826 | dcs->d_type->t_volatile |= dcs->d_volatile; | | 833 | dcs->d_type->t_volatile |= dcs->d_volatile; |
827 | } | | 834 | } |
828 | } | | 835 | } |
829 | | | 836 | |
830 | /* | | 837 | /* |
831 | * Merge type specifiers (char, ..., long long, signed, unsigned). | | 838 | * Merge type specifiers (char, ..., long long, signed, unsigned). |
832 | */ | | 839 | */ |
833 | static tspec_t | | 840 | static tspec_t |
834 | mrgtspec(tspec_t t, tspec_t s) | | 841 | mrgtspec(tspec_t t, tspec_t s) |
835 | { | | 842 | { |
836 | | | 843 | |
837 | if (s == SIGNED || s == UNSIGN) { | | 844 | if (s == SIGNED || s == UNSIGN) { |
838 | if (t == CHAR) { | | 845 | if (t == CHAR) { |
839 | t = s == SIGNED ? SCHAR : UCHAR; | | 846 | t = s == SIGNED ? SCHAR : UCHAR; |
840 | } else if (t == SHORT) { | | 847 | } else if (t == SHORT) { |
841 | t = s == SIGNED ? SHORT : USHORT; | | 848 | t = s == SIGNED ? SHORT : USHORT; |
842 | } else if (t == INT) { | | 849 | } else if (t == INT) { |
843 | t = s == SIGNED ? INT : UINT; | | 850 | t = s == SIGNED ? INT : UINT; |
844 | } else if (t == LONG) { | | 851 | } else if (t == LONG) { |
845 | t = s == SIGNED ? LONG : ULONG; | | 852 | t = s == SIGNED ? LONG : ULONG; |
846 | } else if (t == QUAD) { | | 853 | } else if (t == QUAD) { |
847 | t = s == SIGNED ? QUAD : UQUAD; | | 854 | t = s == SIGNED ? QUAD : UQUAD; |
848 | } | | 855 | } |
849 | } | | 856 | } |
850 | | | 857 | |
851 | return (t); | | 858 | return (t); |
852 | } | | 859 | } |
853 | | | 860 | |
854 | /* | | 861 | /* |
855 | * Return the length of a type in bit. | | 862 | * Return the length of a type in bit. |
856 | * | | 863 | * |
857 | * Printing a message if the outhermost dimension of an array is 0 must | | 864 | * Printing a message if the outhermost dimension of an array is 0 must |
858 | * be done by the caller. All other problems are reported by length() | | 865 | * be done by the caller. All other problems are reported by length() |
859 | * if name is not NULL. | | 866 | * if name is not NULL. |
860 | */ | | 867 | */ |
861 | int | | 868 | int |
862 | length(type_t *tp, const char *name) | | 869 | length(type_t *tp, const char *name) |
863 | { | | 870 | { |
864 | int elem, elsz; | | 871 | int elem, elsz; |
865 | | | 872 | |
866 | elem = 1; | | 873 | elem = 1; |
867 | while (tp && tp->t_tspec == ARRAY) { | | 874 | while (tp && tp->t_tspec == ARRAY) { |
868 | elem *= tp->t_dim; | | 875 | elem *= tp->t_dim; |
869 | tp = tp->t_subt; | | 876 | tp = tp->t_subt; |
870 | } | | 877 | } |
871 | if (tp == NULL) | | 878 | if (tp == NULL) |
872 | return -1; | | 879 | return -1; |
873 | | | 880 | |
874 | switch (tp->t_tspec) { | | 881 | switch (tp->t_tspec) { |
875 | case FUNC: | | 882 | case FUNC: |
876 | /* compiler takes size of function */ | | 883 | /* compiler takes size of function */ |
877 | LERROR(msgs[12]); | | 884 | LERROR(msgs[12]); |
878 | /* NOTREACHED */ | | 885 | /* NOTREACHED */ |
879 | case STRUCT: | | 886 | case STRUCT: |
880 | case UNION: | | 887 | case UNION: |
881 | if (incompl(tp) && name != NULL) { | | 888 | if (incompl(tp) && name != NULL) { |
882 | /* incomplete structure or union %s: %s */ | | 889 | /* incomplete structure or union %s: %s */ |
883 | error(31, tp->t_str->stag->s_name, name); | | 890 | error(31, tp->t_str->stag->s_name, name); |
884 | } | | 891 | } |
885 | elsz = tp->t_str->size; | | 892 | elsz = tp->t_str->size; |
886 | break; | | 893 | break; |
887 | case ENUM: | | 894 | case ENUM: |
888 | if (incompl(tp) && name != NULL) { | | 895 | if (incompl(tp) && name != NULL) { |
889 | /* incomplete enum type: %s */ | | 896 | /* incomplete enum type: %s */ |
890 | warning(13, name); | | 897 | warning(13, name); |
891 | } | | 898 | } |
892 | /* FALLTHROUGH */ | | 899 | /* FALLTHROUGH */ |
893 | default: | | 900 | default: |
894 | elsz = size(tp->t_tspec); | | 901 | elsz = size(tp->t_tspec); |
895 | if (elsz <= 0) | | 902 | if (elsz <= 0) |
896 | LERROR("length()"); | | 903 | LERROR("length()"); |
897 | break; | | 904 | break; |
898 | } | | 905 | } |
899 | return (elem * elsz); | | 906 | return (elem * elsz); |
900 | } | | 907 | } |
901 | | | 908 | |
902 | /* | | 909 | /* |
903 | * Get the alignment of the given Type in bits. | | 910 | * Get the alignment of the given Type in bits. |
904 | */ | | 911 | */ |
905 | int | | 912 | int |
906 | getbound(type_t *tp) | | 913 | getbound(type_t *tp) |
907 | { | | 914 | { |
908 | size_t a; | | 915 | size_t a; |
909 | tspec_t t; | | 916 | tspec_t t; |
910 | | | 917 | |
911 | while (tp && tp->t_tspec == ARRAY) | | 918 | while (tp && tp->t_tspec == ARRAY) |
912 | tp = tp->t_subt; | | 919 | tp = tp->t_subt; |
913 | | | 920 | |
914 | if (tp == NULL) | | 921 | if (tp == NULL) |
915 | return -1; | | 922 | return -1; |
916 | | | 923 | |
917 | if ((t = tp->t_tspec) == STRUCT || t == UNION) { | | 924 | if ((t = tp->t_tspec) == STRUCT || t == UNION) { |
918 | a = tp->t_str->align; | | 925 | a = tp->t_str->align; |
919 | } else if (t == FUNC) { | | 926 | } else if (t == FUNC) { |
920 | /* compiler takes alignment of function */ | | 927 | /* compiler takes alignment of function */ |
921 | error(14); | | 928 | error(14); |
922 | a = ALIGN(1) * CHAR_BIT; | | 929 | a = ALIGN(1) * CHAR_BIT; |
923 | } else { | | 930 | } else { |
924 | if ((a = size(t)) == 0) { | | 931 | if ((a = size(t)) == 0) { |
925 | a = CHAR_BIT; | | 932 | a = CHAR_BIT; |
926 | } else if (a > ALIGN(1) * CHAR_BIT) { | | 933 | } else if (a > ALIGN(1) * CHAR_BIT) { |
927 | a = ALIGN(1) * CHAR_BIT; | | 934 | a = ALIGN(1) * CHAR_BIT; |
928 | } | | 935 | } |
929 | } | | 936 | } |
930 | if (a < CHAR_BIT || a > ALIGN(1) * CHAR_BIT) | | 937 | if (a < CHAR_BIT || a > ALIGN(1) * CHAR_BIT) |
931 | LERROR("getbound()"); | | 938 | LERROR("getbound()"); |
932 | return (a); | | 939 | return (a); |
933 | } | | 940 | } |
934 | | | 941 | |
935 | /* | | 942 | /* |
936 | * Concatenate two lists of symbols by s_nxt. Used by declarations of | | 943 | * Concatenate two lists of symbols by s_nxt. Used by declarations of |
937 | * struct/union/enum elements and parameters. | | 944 | * struct/union/enum elements and parameters. |
938 | */ | | 945 | */ |
939 | sym_t * | | 946 | sym_t * |
940 | lnklst(sym_t *l1, sym_t *l2) | | 947 | lnklst(sym_t *l1, sym_t *l2) |
941 | { | | 948 | { |
942 | sym_t *l; | | 949 | sym_t *l; |
943 | | | 950 | |
944 | if ((l = l1) == NULL) | | 951 | if ((l = l1) == NULL) |
945 | return (l2); | | 952 | return (l2); |
946 | while (l1->s_nxt != NULL) | | 953 | while (l1->s_nxt != NULL) |
947 | l1 = l1->s_nxt; | | 954 | l1 = l1->s_nxt; |
948 | l1->s_nxt = l2; | | 955 | l1->s_nxt = l2; |
949 | return (l); | | 956 | return (l); |
950 | } | | 957 | } |
951 | | | 958 | |
952 | /* | | 959 | /* |
953 | * Check if the type of the given symbol is valid and print an error | | 960 | * Check if the type of the given symbol is valid and print an error |
954 | * message if it is not. | | 961 | * message if it is not. |
955 | * | | 962 | * |
956 | * Invalid types are: | | 963 | * Invalid types are: |
957 | * - arrays of incomlete types or functions | | 964 | * - arrays of incomlete types or functions |
958 | * - functions returning arrays or functions | | 965 | * - functions returning arrays or functions |
959 | * - void types other than type of function or pointer | | 966 | * - void types other than type of function or pointer |
960 | */ | | 967 | */ |
961 | void | | 968 | void |
962 | chktyp(sym_t *sym) | | 969 | chktyp(sym_t *sym) |
963 | { | | 970 | { |
964 | tspec_t to, t; | | 971 | tspec_t to, t; |
965 | type_t **tpp, *tp; | | 972 | type_t **tpp, *tp; |
966 | | | 973 | |
967 | tpp = &sym->s_type; | | 974 | tpp = &sym->s_type; |
968 | to = NOTSPEC; | | 975 | to = NOTSPEC; |
969 | while ((tp = *tpp) != NULL) { | | 976 | while ((tp = *tpp) != NULL) { |
970 | t = tp->t_tspec; | | 977 | t = tp->t_tspec; |
971 | /* | | 978 | /* |
972 | * If this is the type of an old style function definition, | | 979 | * If this is the type of an old style function definition, |
973 | * a better warning is printed in funcdef(). | | 980 | * a better warning is printed in funcdef(). |
974 | */ | | 981 | */ |
975 | if (t == FUNC && !tp->t_proto && | | 982 | if (t == FUNC && !tp->t_proto && |
976 | !(to == NOTSPEC && sym->s_osdef)) { | | 983 | !(to == NOTSPEC && sym->s_osdef)) { |
977 | if (sflag && hflag) | | 984 | if (sflag && hflag) |
978 | /* function declaration is not a prototype */ | | 985 | /* function declaration is not a prototype */ |
979 | warning(287); | | 986 | warning(287); |
980 | } | | 987 | } |
981 | if (to == FUNC) { | | 988 | if (to == FUNC) { |
982 | if (t == FUNC || t == ARRAY) { | | 989 | if (t == FUNC || t == ARRAY) { |
983 | /* function returns illegal type */ | | 990 | /* function returns illegal type */ |
984 | error(15); | | 991 | error(15); |
985 | if (t == FUNC) { | | 992 | if (t == FUNC) { |
986 | *tpp = incref(*tpp, PTR); | | 993 | *tpp = incref(*tpp, PTR); |
987 | } else { | | 994 | } else { |
988 | *tpp = incref((*tpp)->t_subt, PTR); | | 995 | *tpp = incref((*tpp)->t_subt, PTR); |
989 | } | | 996 | } |
990 | return; | | 997 | return; |
991 | } else if (tp->t_const || tp->t_volatile) { | | 998 | } else if (tp->t_const || tp->t_volatile) { |
992 | if (sflag) { /* XXX oder better !tflag ? */ | | 999 | if (sflag) { /* XXX oder better !tflag ? */ |
993 | /* function cannot return const... */ | | 1000 | /* function cannot return const... */ |
994 | warning(228); | | 1001 | warning(228); |
995 | } | | 1002 | } |
996 | } | | 1003 | } |
997 | } if (to == ARRAY) { | | 1004 | } if (to == ARRAY) { |
998 | if (t == FUNC) { | | 1005 | if (t == FUNC) { |
999 | /* array of function is illegal */ | | 1006 | /* array of function is illegal */ |
1000 | error(16); | | 1007 | error(16); |
1001 | *tpp = gettyp(INT); | | 1008 | *tpp = gettyp(INT); |
1002 | return; | | 1009 | return; |
1003 | } else if (t == ARRAY && tp->t_dim == 0) { | | 1010 | } else if (t == ARRAY && tp->t_dim == 0) { |
1004 | /* null dimension */ | | 1011 | /* null dimension */ |
1005 | error(17); | | 1012 | error(17); |
1006 | return; | | 1013 | return; |
1007 | } else if (t == VOID) { | | 1014 | } else if (t == VOID) { |
1008 | /* illegal use of void */ | | 1015 | /* illegal use of void */ |
1009 | error(18); | | 1016 | error(18); |
1010 | *tpp = gettyp(INT); | | 1017 | *tpp = gettyp(INT); |
1011 | #if 0 /* errors are produced by length() */ | | 1018 | #if 0 /* errors are produced by length() */ |
1012 | } else if (incompl(tp)) { | | 1019 | } else if (incompl(tp)) { |
1013 | /* array of incomplete type */ | | 1020 | /* array of incomplete type */ |
1014 | if (sflag) { | | 1021 | if (sflag) { |
1015 | error(301); | | 1022 | error(301); |
1016 | } else { | | 1023 | } else { |
1017 | warning(301); | | 1024 | warning(301); |
1018 | } | | 1025 | } |
1019 | #endif | | 1026 | #endif |
1020 | } | | 1027 | } |
1021 | } else if (to == NOTSPEC && t == VOID) { | | 1028 | } else if (to == NOTSPEC && t == VOID) { |
1022 | if (dcs->d_ctx == PARG) { | | 1029 | if (dcs->d_ctx == PARG) { |
1023 | if (sym->s_scl != ABSTRACT) { | | 1030 | if (sym->s_scl != ABSTRACT) { |
1024 | if (sym->s_name == unnamed) | | 1031 | if (sym->s_name == unnamed) |
1025 | LERROR("chktyp()"); | | 1032 | LERROR("chktyp()"); |
1026 | /* void param cannot have name: %s */ | | 1033 | /* void param cannot have name: %s */ |
1027 | error(61, sym->s_name); | | 1034 | error(61, sym->s_name); |
1028 | *tpp = gettyp(INT); | | 1035 | *tpp = gettyp(INT); |
1029 | } | | 1036 | } |
1030 | } else if (dcs->d_ctx == ABSTRACT) { | | 1037 | } else if (dcs->d_ctx == ABSTRACT) { |
1031 | /* ok */ | | 1038 | /* ok */ |
1032 | } else if (sym->s_scl != TYPEDEF) { | | 1039 | } else if (sym->s_scl != TYPEDEF) { |
1033 | /* void type for %s */ | | 1040 | /* void type for %s */ |
1034 | error(19, sym->s_name); | | 1041 | error(19, sym->s_name); |
1035 | *tpp = gettyp(INT); | | 1042 | *tpp = gettyp(INT); |
1036 | } | | 1043 | } |
1037 | } | | 1044 | } |
1038 | if (t == VOID && to != PTR) { | | 1045 | if (t == VOID && to != PTR) { |
1039 | if (tp->t_const || tp->t_volatile) { | | 1046 | if (tp->t_const || tp->t_volatile) { |
1040 | /* inappropriate qualifiers with "void" */ | | 1047 | /* inappropriate qualifiers with "void" */ |
1041 | warning(69); | | 1048 | warning(69); |
1042 | tp->t_const = tp->t_volatile = 0; | | 1049 | tp->t_const = tp->t_volatile = 0; |
1043 | } | | 1050 | } |
1044 | } | | 1051 | } |
1045 | tpp = &tp->t_subt; | | 1052 | tpp = &tp->t_subt; |
1046 | to = t; | | 1053 | to = t; |
1047 | } | | 1054 | } |
1048 | } | | 1055 | } |
1049 | | | 1056 | |
1050 | /* | | 1057 | /* |
1051 | * Process the declarator of a struct/union element. | | 1058 | * Process the declarator of a struct/union element. |
1052 | */ | | 1059 | */ |
1053 | sym_t * | | 1060 | sym_t * |
1054 | decl1str(sym_t *dsym) | | 1061 | decl1str(sym_t *dsym) |
1055 | { | | 1062 | { |
1056 | type_t *tp; | | 1063 | type_t *tp; |
1057 | tspec_t t; | | 1064 | tspec_t t; |
1058 | int sz, len; | | 1065 | int sz, len; |
1059 | int o = 0; /* Appease gcc */ | | 1066 | int o = 0; /* Appease gcc */ |
1060 | scl_t sc; | | 1067 | scl_t sc; |
1061 | | | 1068 | |
1062 | if ((sc = dsym->s_scl) != MOS && sc != MOU) | | 1069 | if ((sc = dsym->s_scl) != MOS && sc != MOU) |
1063 | LERROR("decl1str()"); | | 1070 | LERROR("decl1str()"); |
1064 | | | 1071 | |
1065 | if (dcs->d_rdcsym != NULL) { | | 1072 | if (dcs->d_rdcsym != NULL) { |
1066 | if ((sc = dcs->d_rdcsym->s_scl) != MOS && sc != MOU) | | 1073 | if ((sc = dcs->d_rdcsym->s_scl) != MOS && sc != MOU) |
1067 | /* should be ensured by storesym() */ | | 1074 | /* should be ensured by storesym() */ |
1068 | LERROR("decl1str()"); | | 1075 | LERROR("decl1str()"); |
1069 | if (dsym->s_styp == dcs->d_rdcsym->s_styp) { | | 1076 | if (dsym->s_styp == dcs->d_rdcsym->s_styp) { |
1070 | /* duplicate member name: %s */ | | 1077 | /* duplicate member name: %s */ |
1071 | error(33, dsym->s_name); | | 1078 | error(33, dsym->s_name); |
1072 | rmsym(dcs->d_rdcsym); | | 1079 | rmsym(dcs->d_rdcsym); |
1073 | } | | 1080 | } |
1074 | } | | 1081 | } |
1075 | | | 1082 | |
1076 | chktyp(dsym); | | 1083 | chktyp(dsym); |
1077 | | | 1084 | |
1078 | t = (tp = dsym->s_type)->t_tspec; | | 1085 | t = (tp = dsym->s_type)->t_tspec; |
1079 | | | 1086 | |
1080 | if (dsym->s_field) { | | 1087 | if (dsym->s_field) { |
1081 | /* | | 1088 | /* |
1082 | * bit field | | 1089 | * bit field |
1083 | * | | 1090 | * |
1084 | * only unsigned und signed int are protable bit-field types | | 1091 | * only unsigned und signed int are protable bit-field types |
1085 | *(at least in ANSI C, in traditional C only unsigned int) | | 1092 | *(at least in ANSI C, in traditional C only unsigned int) |
1086 | */ | | 1093 | */ |
1087 | if (t == CHAR || t == UCHAR || t == SCHAR || | | 1094 | if (t == CHAR || t == UCHAR || t == SCHAR || |
1088 | t == SHORT || t == USHORT || t == ENUM) { | | 1095 | t == SHORT || t == USHORT || t == ENUM) { |
1089 | if (bitfieldtype_ok == 0) { | | 1096 | if (bitfieldtype_ok == 0) { |
1090 | if (sflag) { | | 1097 | if (sflag) { |
1091 | char buf[64]; | | 1098 | char buf[64]; |
1092 | /* | | 1099 | /* |
1093 | * bit-field type '%s' invalid in | | 1100 | * bit-field type '%s' invalid in |
1094 | * ANSI C | | 1101 | * ANSI C |
1095 | */ | | 1102 | */ |
1096 | warning(273, | | 1103 | warning(273, |
1097 | tyname(buf, sizeof(buf), tp)); | | 1104 | tyname(buf, sizeof(buf), tp)); |
1098 | } else if (pflag) { | | 1105 | } else if (pflag) { |
1099 | /* nonportable bit-field type */ | | 1106 | /* nonportable bit-field type */ |
1100 | warning(34); | | 1107 | warning(34); |
1101 | } | | 1108 | } |
1102 | } | | 1109 | } |
1103 | } else if (t == INT && dcs->d_smod == NOTSPEC) { | | 1110 | } else if (t == INT && dcs->d_smod == NOTSPEC) { |
1104 | if (pflag && bitfieldtype_ok == 0) { | | 1111 | if (pflag && bitfieldtype_ok == 0) { |
1105 | /* nonportable bit-field type */ | | 1112 | /* nonportable bit-field type */ |
1106 | warning(34); | | 1113 | warning(34); |
1107 | } | | 1114 | } |
1108 | } else if (t != INT && t != UINT) { | | 1115 | } else if (t != INT && t != UINT) { |
1109 | /* | | 1116 | /* |
1110 | * Non-integer types are always illegal for | | 1117 | * Non-integer types are always illegal for |
1111 | * bitfields, regardless of BITFIELDTYPE. | | 1118 | * bitfields, regardless of BITFIELDTYPE. |
1112 | * Integer types not dealt with above are | | 1119 | * Integer types not dealt with above are |
1113 | * okay only if BITFIELDTYPE is in effect. | | 1120 | * okay only if BITFIELDTYPE is in effect. |
1114 | */ | | 1121 | */ |
1115 | if (bitfieldtype_ok == 0 || isityp(t) == 0) { | | 1122 | if (bitfieldtype_ok == 0 || isityp(t) == 0) { |
1116 | /* illegal bit-field type */ | | 1123 | /* illegal bit-field type */ |
1117 | error(35); | | 1124 | error(35); |
1118 | sz = tp->t_flen; | | 1125 | sz = tp->t_flen; |
1119 | dsym->s_type = tp = duptyp(gettyp(t = INT)); | | 1126 | dsym->s_type = tp = duptyp(gettyp(t = INT)); |
1120 | if ((tp->t_flen = sz) > size(t)) | | 1127 | if ((tp->t_flen = sz) > size(t)) |
1121 | tp->t_flen = size(t); | | 1128 | tp->t_flen = size(t); |
1122 | } | | 1129 | } |
1123 | } | | 1130 | } |
1124 | if ((len = tp->t_flen) < 0 || len > (ssize_t)size(t)) { | | 1131 | if ((len = tp->t_flen) < 0 || len > (ssize_t)size(t)) { |
1125 | /* illegal bit-field size */ | | 1132 | /* illegal bit-field size */ |
1126 | error(36); | | 1133 | error(36); |
1127 | tp->t_flen = size(t); | | 1134 | tp->t_flen = size(t); |
1128 | } else if (len == 0 && dsym->s_name != unnamed) { | | 1135 | } else if (len == 0 && dsym->s_name != unnamed) { |
1129 | /* zero size bit-field */ | | 1136 | /* zero size bit-field */ |
1130 | error(37); | | 1137 | error(37); |
1131 | tp->t_flen = size(t); | | 1138 | tp->t_flen = size(t); |
1132 | } | | 1139 | } |
1133 | if (dsym->s_scl == MOU) { | | 1140 | if (dsym->s_scl == MOU) { |
1134 | /* illegal use of bit-field */ | | 1141 | /* illegal use of bit-field */ |
1135 | error(41); | | 1142 | error(41); |
1136 | dsym->s_type->t_isfield = 0; | | 1143 | dsym->s_type->t_isfield = 0; |
1137 | dsym->s_field = 0; | | 1144 | dsym->s_field = 0; |
1138 | } | | 1145 | } |
1139 | } else if (t == FUNC) { | | 1146 | } else if (t == FUNC) { |
1140 | /* function illegal in structure or union */ | | 1147 | /* function illegal in structure or union */ |
1141 | error(38); | | 1148 | error(38); |
1142 | dsym->s_type = tp = incref(tp, t = PTR); | | 1149 | dsym->s_type = tp = incref(tp, t = PTR); |
1143 | } | | 1150 | } |
1144 | | | 1151 | |
1145 | /* | | 1152 | /* |
1146 | * bit-fields of length 0 are not warned about because length() | | 1153 | * bit-fields of length 0 are not warned about because length() |
1147 | * does not return the length of the bit-field but the length | | 1154 | * does not return the length of the bit-field but the length |
1148 | * of the type the bit-field is packed in (its ok) | | 1155 | * of the type the bit-field is packed in (its ok) |
1149 | */ | | 1156 | */ |
1150 | if ((sz = length(dsym->s_type, dsym->s_name)) == 0) { | | 1157 | if ((sz = length(dsym->s_type, dsym->s_name)) == 0) { |
1151 | if (t == ARRAY && dsym->s_type->t_dim == 0) { | | 1158 | if (t == ARRAY && dsym->s_type->t_dim == 0) { |
1152 | /* illegal zero sized structure member: %s */ | | 1159 | /* illegal zero sized structure member: %s */ |
1153 | c99ism(39, dsym->s_name); | | 1160 | c99ism(39, dsym->s_name); |
1154 | } | | 1161 | } |
1155 | } | | 1162 | } |
1156 | | | 1163 | |
1157 | if (dcs->d_ctx == MOU) { | | 1164 | if (dcs->d_ctx == MOU) { |
1158 | o = dcs->d_offset; | | 1165 | o = dcs->d_offset; |
1159 | dcs->d_offset = 0; | | 1166 | dcs->d_offset = 0; |
1160 | } | | 1167 | } |
1161 | if (dsym->s_field) { | | 1168 | if (dsym->s_field) { |
1162 | align(getbound(tp), tp->t_flen); | | 1169 | align(getbound(tp), tp->t_flen); |
1163 | dsym->s_value.v_quad = (dcs->d_offset / size(t)) * size(t); | | 1170 | dsym->s_value.v_quad = (dcs->d_offset / size(t)) * size(t); |
1164 | tp->t_foffs = dcs->d_offset - (int)dsym->s_value.v_quad; | | 1171 | tp->t_foffs = dcs->d_offset - (int)dsym->s_value.v_quad; |
1165 | dcs->d_offset += tp->t_flen; | | 1172 | dcs->d_offset += tp->t_flen; |
1166 | } else { | | 1173 | } else { |
1167 | align(getbound(tp), 0); | | 1174 | align(getbound(tp), 0); |
1168 | dsym->s_value.v_quad = dcs->d_offset; | | 1175 | dsym->s_value.v_quad = dcs->d_offset; |
1169 | dcs->d_offset += sz; | | 1176 | dcs->d_offset += sz; |
1170 | } | | 1177 | } |
1171 | if (dcs->d_ctx == MOU) { | | 1178 | if (dcs->d_ctx == MOU) { |
1172 | if (o > dcs->d_offset) | | 1179 | if (o > dcs->d_offset) |
1173 | dcs->d_offset = o; | | 1180 | dcs->d_offset = o; |
1174 | } | | 1181 | } |
1175 | | | 1182 | |
1176 | chkfdef(dsym, 0); | | 1183 | chkfdef(dsym, 0); |
1177 | | | 1184 | |
1178 | /* | | 1185 | /* |
1179 | * Clear the BITFIELDTYPE indicator after processing each | | 1186 | * Clear the BITFIELDTYPE indicator after processing each |
1180 | * structure element. | | 1187 | * structure element. |
1181 | */ | | 1188 | */ |
1182 | bitfieldtype_ok = 0; | | 1189 | bitfieldtype_ok = 0; |
1183 | | | 1190 | |
1184 | return (dsym); | | 1191 | return (dsym); |
1185 | } | | 1192 | } |
1186 | | | 1193 | |
1187 | /* | | 1194 | /* |
1188 | * Aligns next structure element as required. | | 1195 | * Aligns next structure element as required. |
1189 | * | | 1196 | * |
1190 | * al contains the required alignment, len the length of a bit-field. | | 1197 | * al contains the required alignment, len the length of a bit-field. |
1191 | */ | | 1198 | */ |
1192 | static void | | 1199 | static void |
1193 | align(int al, int len) | | 1200 | align(int al, int len) |
1194 | { | | 1201 | { |
1195 | int no; | | 1202 | int no; |
1196 | | | 1203 | |
1197 | /* | | 1204 | /* |
1198 | * The alignment of the current element becomes the alignment of | | 1205 | * The alignment of the current element becomes the alignment of |
1199 | * the struct/union if it is larger than the current alignment | | 1206 | * the struct/union if it is larger than the current alignment |
1200 | * of the struct/union. | | 1207 | * of the struct/union. |
1201 | */ | | 1208 | */ |
1202 | if (al > dcs->d_stralign) | | 1209 | if (al > dcs->d_stralign) |
1203 | dcs->d_stralign = al; | | 1210 | dcs->d_stralign = al; |
1204 | | | 1211 | |
1205 | no = (dcs->d_offset + (al - 1)) & ~(al - 1); | | 1212 | no = (dcs->d_offset + (al - 1)) & ~(al - 1); |
1206 | if (len == 0 || dcs->d_offset + len > no) | | 1213 | if (len == 0 || dcs->d_offset + len > no) |
1207 | dcs->d_offset = no; | | 1214 | dcs->d_offset = no; |
1208 | } | | 1215 | } |
1209 | | | 1216 | |
1210 | /* | | 1217 | /* |
1211 | * Remember the width of the field in its type structure. | | 1218 | * Remember the width of the field in its type structure. |
1212 | */ | | 1219 | */ |
1213 | sym_t * | | 1220 | sym_t * |
1214 | bitfield(sym_t *dsym, int len) | | 1221 | bitfield(sym_t *dsym, int len) |
1215 | { | | 1222 | { |
1216 | | | 1223 | |
1217 | if (dsym == NULL) { | | 1224 | if (dsym == NULL) { |
1218 | dsym = getblk(sizeof (sym_t)); | | 1225 | dsym = getblk(sizeof (sym_t)); |
1219 | dsym->s_name = unnamed; | | 1226 | dsym->s_name = unnamed; |
1220 | dsym->s_kind = FMOS; | | 1227 | dsym->s_kind = FMOS; |
1221 | dsym->s_scl = MOS; | | 1228 | dsym->s_scl = MOS; |
1222 | dsym->s_type = gettyp(UINT); | | 1229 | dsym->s_type = gettyp(UINT); |
1223 | dsym->s_blklev = -1; | | 1230 | dsym->s_blklev = -1; |
1224 | } | | 1231 | } |
1225 | dsym->s_type = duptyp(dsym->s_type); | | 1232 | dsym->s_type = duptyp(dsym->s_type); |
1226 | dsym->s_type->t_isfield = 1; | | 1233 | dsym->s_type->t_isfield = 1; |
1227 | dsym->s_type->t_flen = len; | | 1234 | dsym->s_type->t_flen = len; |
1228 | dsym->s_field = 1; | | 1235 | dsym->s_field = 1; |
1229 | return (dsym); | | 1236 | return (dsym); |
1230 | } | | 1237 | } |
1231 | | | 1238 | |
1232 | /* | | 1239 | /* |
1233 | * Collect informations about a sequence of asterisks and qualifiers | | 1240 | * Collect informations about a sequence of asterisks and qualifiers |
1234 | * in a list of type pqinf_t. | | 1241 | * in a list of type pqinf_t. |
1235 | * Qualifiers refer always to the left asterisk. The rightmost asterisk | | 1242 | * Qualifiers refer always to the left asterisk. The rightmost asterisk |
1236 | * will be at the top of the list. | | 1243 | * will be at the top of the list. |
1237 | */ | | 1244 | */ |
1238 | pqinf_t * | | 1245 | pqinf_t * |
1239 | mergepq(pqinf_t *p1, pqinf_t *p2) | | 1246 | mergepq(pqinf_t *p1, pqinf_t *p2) |
1240 | { | | 1247 | { |
1241 | pqinf_t *p; | | 1248 | pqinf_t *p; |
1242 | | | 1249 | |
1243 | if (p2->p_pcnt != 0) { | | 1250 | if (p2->p_pcnt != 0) { |
1244 | /* left '*' at the end of the list */ | | 1251 | /* left '*' at the end of the list */ |
1245 | for (p = p2; p->p_nxt != NULL; p = p->p_nxt) | | 1252 | for (p = p2; p->p_nxt != NULL; p = p->p_nxt) |
1246 | continue; | | 1253 | continue; |
1247 | p->p_nxt = p1; | | 1254 | p->p_nxt = p1; |
1248 | return (p2); | | 1255 | return (p2); |
1249 | } else { | | 1256 | } else { |
1250 | if (p2->p_const) { | | 1257 | if (p2->p_const) { |
1251 | if (p1->p_const) { | | 1258 | if (p1->p_const) { |
1252 | /* duplicate %s */ | | 1259 | /* duplicate %s */ |
1253 | warning(10, "const"); | | 1260 | warning(10, "const"); |
1254 | } | | 1261 | } |
1255 | p1->p_const = 1; | | 1262 | p1->p_const = 1; |
1256 | } | | 1263 | } |
1257 | if (p2->p_volatile) { | | 1264 | if (p2->p_volatile) { |
1258 | if (p1->p_volatile) { | | 1265 | if (p1->p_volatile) { |
1259 | /* duplicate %s */ | | 1266 | /* duplicate %s */ |
1260 | warning(10, "volatile"); | | 1267 | warning(10, "volatile"); |
1261 | } | | 1268 | } |
1262 | p1->p_volatile = 1; | | 1269 | p1->p_volatile = 1; |
1263 | } | | 1270 | } |
1264 | free(p2); | | 1271 | free(p2); |
1265 | return (p1); | | 1272 | return (p1); |
1266 | } | | 1273 | } |
1267 | } | | 1274 | } |
1268 | | | 1275 | |
1269 | /* | | 1276 | /* |
1270 | * Followint 3 functions extend the type of a declarator with | | 1277 | * Followint 3 functions extend the type of a declarator with |
1271 | * pointer, function and array types. | | 1278 | * pointer, function and array types. |
1272 | * | | 1279 | * |
1273 | * The current type is the Type built by deftyp() (dcs->d_type) and | | 1280 | * The current type is the Type built by deftyp() (dcs->d_type) and |
1274 | * pointer, function and array types already added for this | | 1281 | * pointer, function and array types already added for this |
1275 | * declarator. The new type extension is inserted between both. | | 1282 | * declarator. The new type extension is inserted between both. |
1276 | */ | | 1283 | */ |
1277 | sym_t * | | 1284 | sym_t * |
1278 | addptr(sym_t *decl, pqinf_t *pi) | | 1285 | addptr(sym_t *decl, pqinf_t *pi) |
1279 | { | | 1286 | { |
1280 | type_t **tpp, *tp; | | 1287 | type_t **tpp, *tp; |
1281 | pqinf_t *npi; | | 1288 | pqinf_t *npi; |
1282 | | | 1289 | |
1283 | tpp = &decl->s_type; | | 1290 | tpp = &decl->s_type; |
1284 | while (*tpp && *tpp != dcs->d_type) | | 1291 | while (*tpp && *tpp != dcs->d_type) |
1285 | tpp = &(*tpp)->t_subt; | | 1292 | tpp = &(*tpp)->t_subt; |
1286 | if (*tpp == NULL) | | 1293 | if (*tpp == NULL) |
1287 | return decl; | | 1294 | return decl; |
1288 | | | 1295 | |
1289 | while (pi != NULL) { | | 1296 | while (pi != NULL) { |
1290 | *tpp = tp = getblk(sizeof (type_t)); | | 1297 | *tpp = tp = getblk(sizeof (type_t)); |
1291 | tp->t_tspec = PTR; | | 1298 | tp->t_tspec = PTR; |
1292 | tp->t_const = pi->p_const; | | 1299 | tp->t_const = pi->p_const; |
1293 | tp->t_volatile = pi->p_volatile; | | 1300 | tp->t_volatile = pi->p_volatile; |
1294 | *(tpp = &tp->t_subt) = dcs->d_type; | | 1301 | *(tpp = &tp->t_subt) = dcs->d_type; |
1295 | npi = pi->p_nxt; | | 1302 | npi = pi->p_nxt; |
1296 | free(pi); | | 1303 | free(pi); |
1297 | pi = npi; | | 1304 | pi = npi; |
1298 | } | | 1305 | } |
1299 | return (decl); | | 1306 | return (decl); |
1300 | } | | 1307 | } |
1301 | | | 1308 | |
1302 | /* | | 1309 | /* |
1303 | * If a dimension was specified, dim is 1, otherwise 0 | | 1310 | * If a dimension was specified, dim is 1, otherwise 0 |
1304 | * n is the specified dimension | | 1311 | * n is the specified dimension |
1305 | */ | | 1312 | */ |
1306 | sym_t * | | 1313 | sym_t * |
1307 | addarray(sym_t *decl, int dim, int n) | | 1314 | addarray(sym_t *decl, int dim, int n) |
1308 | { | | 1315 | { |
1309 | type_t **tpp, *tp; | | 1316 | type_t **tpp, *tp; |
1310 | | | 1317 | |
1311 | tpp = &decl->s_type; | | 1318 | tpp = &decl->s_type; |
1312 | while (*tpp && *tpp != dcs->d_type) | | 1319 | while (*tpp && *tpp != dcs->d_type) |
1313 | tpp = &(*tpp)->t_subt; | | 1320 | tpp = &(*tpp)->t_subt; |
1314 | if (*tpp == NULL) | | 1321 | if (*tpp == NULL) |
1315 | return decl; | | 1322 | return decl; |
1316 | | | 1323 | |
1317 | *tpp = tp = getblk(sizeof (type_t)); | | 1324 | *tpp = tp = getblk(sizeof (type_t)); |
1318 | tp->t_tspec = ARRAY; | | 1325 | tp->t_tspec = ARRAY; |
1319 | tp->t_subt = dcs->d_type; | | 1326 | tp->t_subt = dcs->d_type; |
1320 | tp->t_dim = n; | | 1327 | tp->t_dim = n; |
1321 | | | 1328 | |
1322 | if (n < 0) { | | 1329 | if (n < 0) { |
1323 | /* negative array dimension */ | | 1330 | /* negative array dimension */ |
1324 | error(20, n); | | 1331 | error(20, n); |
1325 | n = 0; | | 1332 | n = 0; |
1326 | } else if (n == 0 && dim) { | | 1333 | } else if (n == 0 && dim) { |
1327 | /* zero array dimension */ | | 1334 | /* zero array dimension */ |
1328 | c99ism(322, dim); | | 1335 | c99ism(322, dim); |
1329 | } else if (n == 0 && !dim) { | | 1336 | } else if (n == 0 && !dim) { |
1330 | /* is incomplete type */ | | 1337 | /* is incomplete type */ |
1331 | setcompl(tp, 1); | | 1338 | setcompl(tp, 1); |
1332 | } | | 1339 | } |
1333 | | | 1340 | |
1334 | return (decl); | | 1341 | return (decl); |
1335 | } | | 1342 | } |
1336 | | | 1343 | |
1337 | sym_t * | | 1344 | sym_t * |
1338 | addfunc(sym_t *decl, sym_t *args) | | 1345 | addfunc(sym_t *decl, sym_t *args) |
1339 | { | | 1346 | { |
1340 | type_t **tpp, *tp; | | 1347 | type_t **tpp, *tp; |
1341 | | | 1348 | |
1342 | if (dcs->d_proto) { | | 1349 | if (dcs->d_proto) { |
1343 | if (tflag) | | 1350 | if (tflag) |
1344 | /* function prototypes are illegal in traditional C */ | | 1351 | /* function prototypes are illegal in traditional C */ |
1345 | warning(270); | | 1352 | warning(270); |
1346 | args = nsfunc(decl, args); | | 1353 | args = nsfunc(decl, args); |
1347 | } else { | | 1354 | } else { |
1348 | osfunc(decl, args); | | 1355 | osfunc(decl, args); |
1349 | } | | 1356 | } |
1350 | | | 1357 | |
1351 | /* | | 1358 | /* |
1352 | * The symbols are removed from the symbol table by popdecl() after | | 1359 | * The symbols are removed from the symbol table by popdecl() after |
1353 | * addfunc(). To be able to restore them if this is a function | | 1360 | * addfunc(). To be able to restore them if this is a function |
1354 | * definition, a pointer to the list of all symbols is stored in | | 1361 | * definition, a pointer to the list of all symbols is stored in |
1355 | * dcs->d_nxt->d_fpsyms. Also a list of the arguments (concatenated | | 1362 | * dcs->d_nxt->d_fpsyms. Also a list of the arguments (concatenated |
1356 | * by s_nxt) is stored in dcs->d_nxt->d_fargs. | | 1363 | * by s_nxt) is stored in dcs->d_nxt->d_fargs. |
1357 | * (dcs->d_nxt must be used because *dcs is the declaration stack | | 1364 | * (dcs->d_nxt must be used because *dcs is the declaration stack |
1358 | * element created for the list of params and is removed after | | 1365 | * element created for the list of params and is removed after |
1359 | * addfunc()) | | 1366 | * addfunc()) |
1360 | */ | | 1367 | */ |
1361 | if (dcs->d_nxt->d_ctx == EXTERN && | | 1368 | if (dcs->d_nxt->d_ctx == EXTERN && |
1362 | decl->s_type == dcs->d_nxt->d_type) { | | 1369 | decl->s_type == dcs->d_nxt->d_type) { |
1363 | dcs->d_nxt->d_fpsyms = dcs->d_dlsyms; | | 1370 | dcs->d_nxt->d_fpsyms = dcs->d_dlsyms; |
1364 | dcs->d_nxt->d_fargs = args; | | 1371 | dcs->d_nxt->d_fargs = args; |
1365 | } | | 1372 | } |
1366 | | | 1373 | |
1367 | tpp = &decl->s_type; | | 1374 | tpp = &decl->s_type; |
1368 | while (*tpp && *tpp != dcs->d_nxt->d_type) | | 1375 | while (*tpp && *tpp != dcs->d_nxt->d_type) |
1369 | tpp = &(*tpp)->t_subt; | | 1376 | tpp = &(*tpp)->t_subt; |
1370 | if (*tpp == NULL) | | 1377 | if (*tpp == NULL) |
1371 | return decl; | | 1378 | return decl; |
1372 | | | 1379 | |
1373 | *tpp = tp = getblk(sizeof (type_t)); | | 1380 | *tpp = tp = getblk(sizeof (type_t)); |
1374 | tp->t_tspec = FUNC; | | 1381 | tp->t_tspec = FUNC; |
1375 | tp->t_subt = dcs->d_nxt->d_type; | | 1382 | tp->t_subt = dcs->d_nxt->d_type; |
1376 | if ((tp->t_proto = dcs->d_proto) != 0) | | 1383 | if ((tp->t_proto = dcs->d_proto) != 0) |
1377 | tp->t_args = args; | | 1384 | tp->t_args = args; |
1378 | tp->t_vararg = dcs->d_vararg; | | 1385 | tp->t_vararg = dcs->d_vararg; |
1379 | | | 1386 | |
1380 | return (decl); | | 1387 | return (decl); |
1381 | } | | 1388 | } |
1382 | | | 1389 | |
1383 | /* | | 1390 | /* |
1384 | * Called for new style function declarations. | | 1391 | * Called for new style function declarations. |
1385 | */ | | 1392 | */ |
1386 | /* ARGSUSED */ | | 1393 | /* ARGSUSED */ |
1387 | static sym_t * | | 1394 | static sym_t * |
1388 | nsfunc(sym_t *decl, sym_t *args) | | 1395 | nsfunc(sym_t *decl, sym_t *args) |
1389 | { | | 1396 | { |
1390 | sym_t *arg, *sym; | | 1397 | sym_t *arg, *sym; |
1391 | scl_t sc; | | 1398 | scl_t sc; |
1392 | int n; | | 1399 | int n; |
1393 | | | 1400 | |
1394 | /* | | 1401 | /* |
1395 | * Declarations of structs/unions/enums in param lists are legal, | | 1402 | * Declarations of structs/unions/enums in param lists are legal, |
1396 | * but senseless. | | 1403 | * but senseless. |
1397 | */ | | 1404 | */ |
1398 | for (sym = dcs->d_dlsyms; sym != NULL; sym = sym->s_dlnxt) { | | 1405 | for (sym = dcs->d_dlsyms; sym != NULL; sym = sym->s_dlnxt) { |
1399 | sc = sym->s_scl; | | 1406 | sc = sym->s_scl; |
1400 | if (sc == STRTAG || sc == UNIONTAG || sc == ENUMTAG) { | | 1407 | if (sc == STRTAG || sc == UNIONTAG || sc == ENUMTAG) { |
1401 | /* dubious tag declaration: %s %s */ | | 1408 | /* dubious tag declaration: %s %s */ |
1402 | warning(85, scltoa(sc), sym->s_name); | | 1409 | warning(85, scltoa(sc), sym->s_name); |
1403 | } | | 1410 | } |
1404 | } | | 1411 | } |
1405 | | | 1412 | |
1406 | n = 1; | | 1413 | n = 1; |
1407 | for (arg = args; arg != NULL; arg = arg->s_nxt) { | | 1414 | for (arg = args; arg != NULL; arg = arg->s_nxt) { |
1408 | if (arg->s_type->t_tspec == VOID) { | | 1415 | if (arg->s_type->t_tspec == VOID) { |
1409 | if (n > 1 || arg->s_nxt != NULL) { | | 1416 | if (n > 1 || arg->s_nxt != NULL) { |
1410 | /* "void" must be sole parameter */ | | 1417 | /* "void" must be sole parameter */ |
1411 | error(60); | | 1418 | error(60); |
1412 | arg->s_type = gettyp(INT); | | 1419 | arg->s_type = gettyp(INT); |
1413 | } | | 1420 | } |
1414 | } | | 1421 | } |
1415 | n++; | | 1422 | n++; |
1416 | } | | 1423 | } |
1417 | | | 1424 | |
1418 | /* return NULL if first param is VOID */ | | 1425 | /* return NULL if first param is VOID */ |
1419 | return (args != NULL && args->s_type->t_tspec != VOID ? args : NULL); | | 1426 | return (args != NULL && args->s_type->t_tspec != VOID ? args : NULL); |
1420 | } | | 1427 | } |
1421 | | | 1428 | |
1422 | /* | | 1429 | /* |
1423 | * Called for old style function declarations. | | 1430 | * Called for old style function declarations. |
1424 | */ | | 1431 | */ |
1425 | static void | | 1432 | static void |
1426 | osfunc(sym_t *decl, sym_t *args) | | 1433 | osfunc(sym_t *decl, sym_t *args) |
1427 | { | | 1434 | { |
1428 | | | 1435 | |
1429 | /* | | 1436 | /* |
1430 | * Remember list of params only if this is really seams to be | | 1437 | * Remember list of params only if this is really seams to be |
1431 | * a function definition. | | 1438 | * a function definition. |
1432 | */ | | 1439 | */ |
1433 | if (dcs->d_nxt->d_ctx == EXTERN && | | 1440 | if (dcs->d_nxt->d_ctx == EXTERN && |
1434 | decl->s_type == dcs->d_nxt->d_type) { | | 1441 | decl->s_type == dcs->d_nxt->d_type) { |
1435 | /* | | 1442 | /* |
1436 | * We assume that this becomes a function definition. If | | 1443 | * We assume that this becomes a function definition. If |
1437 | * we are wrong, its corrected in chkfdef(). | | 1444 | * we are wrong, its corrected in chkfdef(). |
1438 | */ | | 1445 | */ |
1439 | if (args != NULL) { | | 1446 | if (args != NULL) { |
1440 | decl->s_osdef = 1; | | 1447 | decl->s_osdef = 1; |
1441 | decl->s_args = args; | | 1448 | decl->s_args = args; |
1442 | } | | 1449 | } |
1443 | } else { | | 1450 | } else { |
1444 | if (args != NULL) | | 1451 | if (args != NULL) |
1445 | /* function prototype parameters must have types */ | | 1452 | /* function prototype parameters must have types */ |
1446 | warning(62); | | 1453 | warning(62); |
1447 | } | | 1454 | } |
1448 | } | | 1455 | } |
1449 | | | 1456 | |
1450 | /* | | 1457 | /* |
1451 | * Lists of Identifiers in functions declarations are allowed only if | | 1458 | * Lists of Identifiers in functions declarations are allowed only if |
1452 | * its also a function definition. If this is not the case, print a | | 1459 | * its also a function definition. If this is not the case, print a |
1453 | * error message. | | 1460 | * error message. |
1454 | */ | | 1461 | */ |
1455 | void | | 1462 | void |
1456 | chkfdef(sym_t *sym, int msg) | | 1463 | chkfdef(sym_t *sym, int msg) |
1457 | { | | 1464 | { |
1458 | | | 1465 | |
1459 | if (sym->s_osdef) { | | 1466 | if (sym->s_osdef) { |
1460 | if (msg) { | | 1467 | if (msg) { |
1461 | /* incomplete or misplaced function definition */ | | 1468 | /* incomplete or misplaced function definition */ |
1462 | error(22); | | 1469 | error(22); |
1463 | } | | 1470 | } |
1464 | sym->s_osdef = 0; | | 1471 | sym->s_osdef = 0; |
1465 | sym->s_args = NULL; | | 1472 | sym->s_args = NULL; |
1466 | } | | 1473 | } |
1467 | } | | 1474 | } |
1468 | | | 1475 | |
1469 | /* | | 1476 | /* |
1470 | * Process the name in a declarator. | | 1477 | * Process the name in a declarator. |
1471 | * If the symbol does already exists, a new one is created. | | 1478 | * If the symbol does already exists, a new one is created. |
1472 | * The symbol becomes one of the storage classes EXTERN, STATIC, AUTO or | | 1479 | * The symbol becomes one of the storage classes EXTERN, STATIC, AUTO or |
1473 | * TYPEDEF. | | 1480 | * TYPEDEF. |
1474 | * s_def and s_reg are valid after dname(). | | 1481 | * s_def and s_reg are valid after dname(). |
1475 | */ | | 1482 | */ |
1476 | sym_t * | | 1483 | sym_t * |
1477 | dname(sym_t *sym) | | 1484 | dname(sym_t *sym) |
1478 | { | | 1485 | { |
1479 | scl_t sc = NOSCL; | | 1486 | scl_t sc = NOSCL; |
1480 | | | 1487 | |
1481 | if (sym->s_scl == NOSCL) { | | 1488 | if (sym->s_scl == NOSCL) { |
1482 | dcs->d_rdcsym = NULL; | | 1489 | dcs->d_rdcsym = NULL; |
1483 | } else if (sym->s_defarg) { | | 1490 | } else if (sym->s_defarg) { |
1484 | sym->s_defarg = 0; | | 1491 | sym->s_defarg = 0; |
1485 | dcs->d_rdcsym = NULL; | | 1492 | dcs->d_rdcsym = NULL; |
1486 | } else { | | 1493 | } else { |
1487 | dcs->d_rdcsym = sym; | | 1494 | dcs->d_rdcsym = sym; |
1488 | sym = pushdown(sym); | | 1495 | sym = pushdown(sym); |
1489 | } | | 1496 | } |
1490 | | | 1497 | |
1491 | switch (dcs->d_ctx) { | | 1498 | switch (dcs->d_ctx) { |
1492 | case MOS: | | 1499 | case MOS: |
1493 | case MOU: | | 1500 | case MOU: |
1494 | /* Parent setzen */ | | 1501 | /* Parent setzen */ |
1495 | sym->s_styp = dcs->d_tagtyp->t_str; | | 1502 | sym->s_styp = dcs->d_tagtyp->t_str; |
1496 | sym->s_def = DEF; | | 1503 | sym->s_def = DEF; |
1497 | sym->s_value.v_tspec = INT; | | 1504 | sym->s_value.v_tspec = INT; |
1498 | sc = dcs->d_ctx; | | 1505 | sc = dcs->d_ctx; |
1499 | break; | | 1506 | break; |
1500 | case EXTERN: | | 1507 | case EXTERN: |
1501 | /* | | 1508 | /* |
1502 | * static and external symbols without "extern" are | | 1509 | * static and external symbols without "extern" are |
1503 | * considered to be tentative defined, external | | 1510 | * considered to be tentative defined, external |
1504 | * symbols with "extern" are declared, and typedef names | | 1511 | * symbols with "extern" are declared, and typedef names |
1505 | * are defined. Tentative defined and declared symbols | | 1512 | * are defined. Tentative defined and declared symbols |
1506 | * may become defined if an initializer is present or | | 1513 | * may become defined if an initializer is present or |
1507 | * this is a function definition. | | 1514 | * this is a function definition. |
1508 | */ | | 1515 | */ |
1509 | if ((sc = dcs->d_scl) == NOSCL) { | | 1516 | if ((sc = dcs->d_scl) == NOSCL) { |