Line data Source code
1 : /* Decomposed printf argument list.
2 : Copyright (C) 1999, 2002-2003, 2005-2007, 2009-2025 Free Software
3 : Foundation, Inc.
4 :
5 : This file is free software: you can redistribute it and/or modify
6 : it under the terms of the GNU Lesser General Public License as
7 : published by the Free Software Foundation; either version 2.1 of the
8 : License, or (at your option) any later version.
9 :
10 : This file is distributed in the hope that it will be useful,
11 : but WITHOUT ANY WARRANTY; without even the implied warranty of
12 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 : GNU Lesser General Public License for more details.
14 :
15 : You should have received a copy of the GNU Lesser General Public License
16 : along with this program. If not, see <https://www.gnu.org/licenses/>. */
17 :
18 : /* This file can be parametrized with the following macros:
19 : ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions.
20 : PRINTF_FETCHARGS Name of the function to be defined.
21 : STATIC Set to 'static' to declare the function static. */
22 :
23 : #ifndef PRINTF_FETCHARGS
24 : # include <config.h>
25 : #endif
26 :
27 : /* Specification. */
28 : #ifndef PRINTF_FETCHARGS
29 : # include "printf-args.h"
30 : #endif
31 :
32 : /* Get INT_WIDTH. */
33 : #include <limits.h>
34 :
35 : /* Get abort(). */
36 : #include <stdlib.h>
37 :
38 : #ifdef STATIC
39 : STATIC
40 : #endif
41 : int
42 14391 : PRINTF_FETCHARGS (va_list args, arguments *a)
43 : {
44 : size_t i;
45 : argument *ap;
46 :
47 29638 : for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
48 15247 : switch (ap->type)
49 : {
50 0 : case TYPE_SCHAR:
51 0 : ap->a.a_schar = va_arg (args, /*signed char*/ int);
52 0 : break;
53 0 : case TYPE_UCHAR:
54 0 : ap->a.a_uchar = va_arg (args, /*unsigned char*/ int);
55 0 : break;
56 0 : case TYPE_SHORT:
57 0 : ap->a.a_short = va_arg (args, /*short*/ int);
58 0 : break;
59 0 : case TYPE_USHORT:
60 0 : ap->a.a_ushort = va_arg (args, /*unsigned short*/ int);
61 0 : break;
62 755 : case TYPE_INT:
63 755 : ap->a.a_int = va_arg (args, int);
64 755 : break;
65 13705 : case TYPE_UINT:
66 13705 : ap->a.a_uint = va_arg (args, unsigned int);
67 13705 : break;
68 0 : case TYPE_LONGINT:
69 0 : ap->a.a_longint = va_arg (args, long int);
70 0 : break;
71 0 : case TYPE_ULONGINT:
72 0 : ap->a.a_ulongint = va_arg (args, unsigned long int);
73 0 : break;
74 0 : case TYPE_LONGLONGINT:
75 0 : ap->a.a_longlongint = va_arg (args, long long int);
76 0 : break;
77 0 : case TYPE_ULONGLONGINT:
78 0 : ap->a.a_ulonglongint = va_arg (args, unsigned long long int);
79 0 : break;
80 0 : case TYPE_INT8_T:
81 : #if INT8_WIDTH < INT_WIDTH
82 0 : ap->a.a_int8_t = va_arg (args, /* int8_t */ int);
83 : #else
84 : ap->a.a_int8_t = va_arg (args, int8_t);
85 : #endif
86 0 : break;
87 0 : case TYPE_UINT8_T:
88 : #if UINT8_WIDTH < INT_WIDTH
89 0 : ap->a.a_uint8_t = va_arg (args, /* uint8_t */ int);
90 : #else
91 : ap->a.a_uint8_t = va_arg (args, uint8_t);
92 : #endif
93 0 : break;
94 0 : case TYPE_INT16_T:
95 : #if INT16_WIDTH < INT_WIDTH
96 0 : ap->a.a_int16_t = va_arg (args, /* int16_t */ int);
97 : #else
98 : ap->a.a_int16_t = va_arg (args, int16_t);
99 : #endif
100 0 : break;
101 0 : case TYPE_UINT16_T:
102 : #if UINT16_WIDTH < INT_WIDTH
103 0 : ap->a.a_uint16_t = va_arg (args, /* uint16_t */ int);
104 : #else
105 : ap->a.a_uint16_t = va_arg (args, uint16_t);
106 : #endif
107 0 : break;
108 0 : case TYPE_INT32_T:
109 : #if INT32_WIDTH < INT_WIDTH
110 : ap->a.a_int32_t = va_arg (args, /* int32_t */ int);
111 : #else
112 0 : ap->a.a_int32_t = va_arg (args, int32_t);
113 : #endif
114 0 : break;
115 0 : case TYPE_UINT32_T:
116 : #if UINT32_WIDTH < INT_WIDTH
117 : ap->a.a_uint32_t = va_arg (args, /* uint32_t */ int);
118 : #else
119 0 : ap->a.a_uint32_t = va_arg (args, uint32_t);
120 : #endif
121 0 : break;
122 0 : case TYPE_INT64_T:
123 0 : ap->a.a_int64_t = va_arg (args, int64_t);
124 0 : break;
125 0 : case TYPE_UINT64_T:
126 0 : ap->a.a_uint64_t = va_arg (args, uint64_t);
127 0 : break;
128 0 : case TYPE_INT_FAST8_T:
129 : #if INT_FAST8_WIDTH < INT_WIDTH
130 0 : ap->a.a_int_fast8_t = va_arg (args, /* int_fast8_t */ int);
131 : #else
132 : ap->a.a_int_fast8_t = va_arg (args, int_fast8_t);
133 : #endif
134 0 : break;
135 0 : case TYPE_UINT_FAST8_T:
136 : #if UINT_FAST8_WIDTH < INT_WIDTH
137 0 : ap->a.a_uint_fast8_t = va_arg (args, /* uint_fast8_t */ int);
138 : #else
139 : ap->a.a_uint_fast8_t = va_arg (args, uint_fast8_t);
140 : #endif
141 0 : break;
142 0 : case TYPE_INT_FAST16_T:
143 : #if INT_FAST16_WIDTH < INT_WIDTH
144 : ap->a.a_int_fast16_t = va_arg (args, /* int_fast16_t */ int);
145 : #else
146 0 : ap->a.a_int_fast16_t = va_arg (args, int_fast16_t);
147 : #endif
148 0 : break;
149 0 : case TYPE_UINT_FAST16_T:
150 : #if UINT_FAST16_WIDTH < INT_WIDTH
151 : ap->a.a_uint_fast16_t = va_arg (args, /* uint_fast16_t */ int);
152 : #else
153 0 : ap->a.a_uint_fast16_t = va_arg (args, uint_fast16_t);
154 : #endif
155 0 : break;
156 0 : case TYPE_INT_FAST32_T:
157 : #if INT_FAST32_WIDTH < INT_WIDTH
158 : ap->a.a_int_fast32_t = va_arg (args, /* int_fast32_t */ int);
159 : #else
160 0 : ap->a.a_int_fast32_t = va_arg (args, int_fast32_t);
161 : #endif
162 0 : break;
163 0 : case TYPE_UINT_FAST32_T:
164 : #if UINT_FAST32_WIDTH < INT_WIDTH
165 : ap->a.a_uint_fast32_t = va_arg (args, /* uint_fast32_t */ int);
166 : #else
167 0 : ap->a.a_uint_fast32_t = va_arg (args, uint_fast32_t);
168 : #endif
169 0 : break;
170 0 : case TYPE_INT_FAST64_T:
171 0 : ap->a.a_int_fast64_t = va_arg (args, int_fast64_t);
172 0 : break;
173 0 : case TYPE_UINT_FAST64_T:
174 0 : ap->a.a_uint_fast64_t = va_arg (args, uint_fast64_t);
175 0 : break;
176 43 : case TYPE_DOUBLE:
177 43 : ap->a.a_double = va_arg (args, double);
178 43 : break;
179 0 : case TYPE_LONGDOUBLE:
180 0 : ap->a.a_longdouble = va_arg (args, long double);
181 0 : break;
182 31 : case TYPE_CHAR:
183 31 : ap->a.a_char = va_arg (args, int);
184 31 : break;
185 : #if HAVE_WINT_T
186 0 : case TYPE_WIDE_CHAR:
187 : /* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by
188 : default argument promotions", this is not the case in mingw32,
189 : where wint_t is 'unsigned short'. */
190 0 : ap->a.a_wide_char =
191 : (sizeof (wint_t) < sizeof (int)
192 : ? (wint_t) va_arg (args, int)
193 0 : : va_arg (args, wint_t));
194 0 : break;
195 : #endif
196 713 : case TYPE_STRING:
197 713 : ap->a.a_string = va_arg (args, const char *);
198 : /* A null pointer is an invalid argument for "%s", but in practice
199 : it occurs quite frequently in printf statements that produce
200 : debug output. Use a fallback in this case. */
201 713 : if (ap->a.a_string == NULL)
202 3 : ap->a.a_string = "(NULL)";
203 713 : break;
204 0 : case TYPE_WIDE_STRING:
205 0 : ap->a.a_wide_string = va_arg (args, const wchar_t *);
206 : /* A null pointer is an invalid argument for "%ls", but in practice
207 : it occurs quite frequently in printf statements that produce
208 : debug output. Use a fallback in this case. */
209 0 : if (ap->a.a_wide_string == NULL)
210 : {
211 : static const wchar_t wide_null_string[] =
212 : {
213 : (wchar_t)'(',
214 : (wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L',
215 : (wchar_t)')',
216 : (wchar_t)0
217 : };
218 0 : ap->a.a_wide_string = wide_null_string;
219 : }
220 0 : break;
221 0 : case TYPE_POINTER:
222 0 : ap->a.a_pointer = va_arg (args, void *);
223 0 : break;
224 0 : case TYPE_COUNT_SCHAR_POINTER:
225 0 : ap->a.a_count_schar_pointer = va_arg (args, signed char *);
226 0 : break;
227 0 : case TYPE_COUNT_SHORT_POINTER:
228 0 : ap->a.a_count_short_pointer = va_arg (args, short *);
229 0 : break;
230 0 : case TYPE_COUNT_INT_POINTER:
231 0 : ap->a.a_count_int_pointer = va_arg (args, int *);
232 0 : break;
233 0 : case TYPE_COUNT_LONGINT_POINTER:
234 0 : ap->a.a_count_longint_pointer = va_arg (args, long int *);
235 0 : break;
236 0 : case TYPE_COUNT_LONGLONGINT_POINTER:
237 0 : ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
238 0 : break;
239 0 : case TYPE_COUNT_INT8_T_POINTER:
240 0 : ap->a.a_count_int8_t_pointer = va_arg (args, int8_t *);
241 0 : break;
242 0 : case TYPE_COUNT_INT16_T_POINTER:
243 0 : ap->a.a_count_int16_t_pointer = va_arg (args, int16_t *);
244 0 : break;
245 0 : case TYPE_COUNT_INT32_T_POINTER:
246 0 : ap->a.a_count_int32_t_pointer = va_arg (args, int32_t *);
247 0 : break;
248 0 : case TYPE_COUNT_INT64_T_POINTER:
249 0 : ap->a.a_count_int64_t_pointer = va_arg (args, int64_t *);
250 0 : break;
251 0 : case TYPE_COUNT_INT_FAST8_T_POINTER:
252 0 : ap->a.a_count_int_fast8_t_pointer = va_arg (args, int_fast8_t *);
253 0 : break;
254 0 : case TYPE_COUNT_INT_FAST16_T_POINTER:
255 0 : ap->a.a_count_int_fast16_t_pointer = va_arg (args, int_fast16_t *);
256 0 : break;
257 0 : case TYPE_COUNT_INT_FAST32_T_POINTER:
258 0 : ap->a.a_count_int_fast32_t_pointer = va_arg (args, int_fast32_t *);
259 0 : break;
260 0 : case TYPE_COUNT_INT_FAST64_T_POINTER:
261 0 : ap->a.a_count_int_fast64_t_pointer = va_arg (args, int_fast64_t *);
262 0 : break;
263 : #if ENABLE_UNISTDIO
264 : /* The unistdio extensions. */
265 : case TYPE_U8_STRING:
266 : ap->a.a_u8_string = va_arg (args, const uint8_t *);
267 : /* A null pointer is an invalid argument for "%U", but in practice
268 : it occurs quite frequently in printf statements that produce
269 : debug output. Use a fallback in this case. */
270 : if (ap->a.a_u8_string == NULL)
271 : {
272 : static const uint8_t u8_null_string[] =
273 : { '(', 'N', 'U', 'L', 'L', ')', 0 };
274 : ap->a.a_u8_string = u8_null_string;
275 : }
276 : break;
277 : case TYPE_U16_STRING:
278 : ap->a.a_u16_string = va_arg (args, const uint16_t *);
279 : /* A null pointer is an invalid argument for "%lU", but in practice
280 : it occurs quite frequently in printf statements that produce
281 : debug output. Use a fallback in this case. */
282 : if (ap->a.a_u16_string == NULL)
283 : {
284 : static const uint16_t u16_null_string[] =
285 : { '(', 'N', 'U', 'L', 'L', ')', 0 };
286 : ap->a.a_u16_string = u16_null_string;
287 : }
288 : break;
289 : case TYPE_U32_STRING:
290 : ap->a.a_u32_string = va_arg (args, const uint32_t *);
291 : /* A null pointer is an invalid argument for "%llU", but in practice
292 : it occurs quite frequently in printf statements that produce
293 : debug output. Use a fallback in this case. */
294 : if (ap->a.a_u32_string == NULL)
295 : {
296 : static const uint32_t u32_null_string[] =
297 : { '(', 'N', 'U', 'L', 'L', ')', 0 };
298 : ap->a.a_u32_string = u32_null_string;
299 : }
300 : break;
301 : #endif
302 0 : case TYPE_NONE:
303 : /* Argument i is not used by any directive, but some argument with
304 : number > i is used by a format directive. POSIX says that this
305 : is invalid:
306 : "When numbered argument specifications are used, specifying the
307 : Nth argument requires that all the leading arguments, from the
308 : first to the (N-1)th, are specified in the format string."
309 : The reason is that we cannot know how many bytes to skip in the
310 : va_arg sequence. */
311 0 : return -1;
312 0 : default:
313 : /* Unknown type. Should not happen. */
314 0 : abort ();
315 : }
316 14391 : return 0;
317 : }
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