Commit | Line | Data |
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231c0e0e | 1 | # printf.m4 serial 43 |
49114fd4 | 2 | dnl Copyright (C) 2003, 2007-2011 Free Software Foundation, Inc. |
c4b681fd LC |
3 | dnl This file is free software; the Free Software Foundation |
4 | dnl gives unlimited permission to copy and/or distribute it, | |
5 | dnl with or without modifications, as long as this notice is preserved. | |
6 | ||
7 | dnl Test whether the *printf family of functions supports the 'j', 'z', 't', | |
8 | dnl 'L' size specifiers. (ISO C99, POSIX:2001) | |
9 | dnl Result is gl_cv_func_printf_sizes_c99. | |
10 | ||
11 | AC_DEFUN([gl_PRINTF_SIZES_C99], | |
12 | [ | |
13 | AC_REQUIRE([AC_PROG_CC]) | |
14 | AC_REQUIRE([gl_AC_HEADER_STDINT_H]) | |
15 | AC_REQUIRE([gl_AC_HEADER_INTTYPES_H]) | |
16 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
17 | AC_CACHE_CHECK([whether printf supports size specifiers as in C99], | |
18 | [gl_cv_func_printf_sizes_c99], | |
19 | [ | |
9157d901 LC |
20 | AC_RUN_IFELSE( |
21 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
22 | #include <stddef.h> |
23 | #include <stdio.h> | |
24 | #include <string.h> | |
25 | #include <sys/types.h> | |
26 | #if HAVE_STDINT_H_WITH_UINTMAX | |
27 | # include <stdint.h> | |
28 | #endif | |
29 | #if HAVE_INTTYPES_H_WITH_UINTMAX | |
30 | # include <inttypes.h> | |
31 | #endif | |
32 | static char buf[100]; | |
33 | int main () | |
34 | { | |
0f00f2c3 | 35 | int result = 0; |
c4b681fd LC |
36 | #if HAVE_STDINT_H_WITH_UINTMAX || HAVE_INTTYPES_H_WITH_UINTMAX |
37 | buf[0] = '\0'; | |
38 | if (sprintf (buf, "%ju %d", (uintmax_t) 12345671, 33, 44, 55) < 0 | |
39 | || strcmp (buf, "12345671 33") != 0) | |
0f00f2c3 | 40 | result |= 1; |
c4b681fd LC |
41 | #endif |
42 | buf[0] = '\0'; | |
43 | if (sprintf (buf, "%zu %d", (size_t) 12345672, 33, 44, 55) < 0 | |
44 | || strcmp (buf, "12345672 33") != 0) | |
0f00f2c3 | 45 | result |= 2; |
c4b681fd LC |
46 | buf[0] = '\0'; |
47 | if (sprintf (buf, "%tu %d", (ptrdiff_t) 12345673, 33, 44, 55) < 0 | |
48 | || strcmp (buf, "12345673 33") != 0) | |
0f00f2c3 | 49 | result |= 4; |
c4b681fd LC |
50 | buf[0] = '\0'; |
51 | if (sprintf (buf, "%Lg %d", (long double) 1.5, 33, 44, 55) < 0 | |
52 | || strcmp (buf, "1.5 33") != 0) | |
0f00f2c3 LC |
53 | result |= 8; |
54 | return result; | |
9157d901 LC |
55 | }]])], |
56 | [gl_cv_func_printf_sizes_c99=yes], | |
57 | [gl_cv_func_printf_sizes_c99=no], | |
58 | [ | |
c4b681fd | 59 | changequote(,)dnl |
9157d901 LC |
60 | case "$host_os" in |
61 | # Guess yes on glibc systems. | |
62 | *-gnu*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
63 | # Guess yes on FreeBSD >= 5. | |
64 | freebsd[1-4]*) gl_cv_func_printf_sizes_c99="guessing no";; | |
65 | freebsd* | kfreebsd*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
66 | # Guess yes on MacOS X >= 10.3. | |
67 | darwin[1-6].*) gl_cv_func_printf_sizes_c99="guessing no";; | |
68 | darwin*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
69 | # Guess yes on OpenBSD >= 3.9. | |
70 | openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) | |
71 | gl_cv_func_printf_sizes_c99="guessing no";; | |
72 | openbsd*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
73 | # Guess yes on Solaris >= 2.10. | |
49114fd4 LC |
74 | solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";; |
75 | solaris*) gl_cv_func_printf_sizes_c99="guessing no";; | |
9157d901 LC |
76 | # Guess yes on NetBSD >= 3. |
77 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
78 | gl_cv_func_printf_sizes_c99="guessing no";; | |
79 | netbsd*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
80 | # If we don't know, assume the worst. | |
81 | *) gl_cv_func_printf_sizes_c99="guessing no";; | |
82 | esac | |
c4b681fd | 83 | changequote([,])dnl |
9157d901 | 84 | ]) |
c4b681fd LC |
85 | ]) |
86 | ]) | |
87 | ||
88 | dnl Test whether the *printf family of functions supports 'long double' | |
89 | dnl arguments together with the 'L' size specifier. (ISO C99, POSIX:2001) | |
90 | dnl Result is gl_cv_func_printf_long_double. | |
91 | ||
92 | AC_DEFUN([gl_PRINTF_LONG_DOUBLE], | |
93 | [ | |
94 | AC_REQUIRE([AC_PROG_CC]) | |
95 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
96 | AC_CACHE_CHECK([whether printf supports 'long double' arguments], | |
97 | [gl_cv_func_printf_long_double], | |
98 | [ | |
9157d901 LC |
99 | AC_RUN_IFELSE( |
100 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
101 | #include <stdio.h> |
102 | #include <string.h> | |
103 | static char buf[10000]; | |
104 | int main () | |
105 | { | |
0f00f2c3 | 106 | int result = 0; |
c4b681fd LC |
107 | buf[0] = '\0'; |
108 | if (sprintf (buf, "%Lf %d", 1.75L, 33, 44, 55) < 0 | |
109 | || strcmp (buf, "1.750000 33") != 0) | |
0f00f2c3 | 110 | result |= 1; |
c4b681fd LC |
111 | buf[0] = '\0'; |
112 | if (sprintf (buf, "%Le %d", 1.75L, 33, 44, 55) < 0 | |
113 | || strcmp (buf, "1.750000e+00 33") != 0) | |
0f00f2c3 | 114 | result |= 2; |
c4b681fd LC |
115 | buf[0] = '\0'; |
116 | if (sprintf (buf, "%Lg %d", 1.75L, 33, 44, 55) < 0 | |
117 | || strcmp (buf, "1.75 33") != 0) | |
0f00f2c3 LC |
118 | result |= 4; |
119 | return result; | |
9157d901 LC |
120 | }]])], |
121 | [gl_cv_func_printf_long_double=yes], | |
122 | [gl_cv_func_printf_long_double=no], | |
123 | [ | |
c4b681fd | 124 | changequote(,)dnl |
9157d901 LC |
125 | case "$host_os" in |
126 | beos*) gl_cv_func_printf_long_double="guessing no";; | |
127 | mingw* | pw*) gl_cv_func_printf_long_double="guessing no";; | |
128 | *) gl_cv_func_printf_long_double="guessing yes";; | |
129 | esac | |
c4b681fd | 130 | changequote([,])dnl |
9157d901 | 131 | ]) |
c4b681fd LC |
132 | ]) |
133 | ]) | |
134 | ||
135 | dnl Test whether the *printf family of functions supports infinite and NaN | |
136 | dnl 'double' arguments and negative zero arguments in the %f, %e, %g | |
137 | dnl directives. (ISO C99, POSIX:2001) | |
138 | dnl Result is gl_cv_func_printf_infinite. | |
139 | ||
140 | AC_DEFUN([gl_PRINTF_INFINITE], | |
141 | [ | |
142 | AC_REQUIRE([AC_PROG_CC]) | |
143 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
144 | AC_CACHE_CHECK([whether printf supports infinite 'double' arguments], | |
145 | [gl_cv_func_printf_infinite], | |
146 | [ | |
9157d901 LC |
147 | AC_RUN_IFELSE( |
148 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
149 | #include <stdio.h> |
150 | #include <string.h> | |
151 | static int | |
152 | strisnan (const char *string, size_t start_index, size_t end_index) | |
153 | { | |
154 | if (start_index < end_index) | |
155 | { | |
156 | if (string[start_index] == '-') | |
157 | start_index++; | |
158 | if (start_index + 3 <= end_index | |
159 | && memcmp (string + start_index, "nan", 3) == 0) | |
160 | { | |
161 | start_index += 3; | |
162 | if (start_index == end_index | |
163 | || (string[start_index] == '(' && string[end_index - 1] == ')')) | |
164 | return 1; | |
165 | } | |
166 | } | |
167 | return 0; | |
168 | } | |
169 | static int | |
170 | have_minus_zero () | |
171 | { | |
172 | static double plus_zero = 0.0; | |
173 | double minus_zero = - plus_zero; | |
174 | return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0; | |
175 | } | |
176 | static char buf[10000]; | |
177 | static double zero = 0.0; | |
178 | int main () | |
179 | { | |
0f00f2c3 | 180 | int result = 0; |
c4b681fd LC |
181 | if (sprintf (buf, "%f", 1.0 / 0.0) < 0 |
182 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
0f00f2c3 | 183 | result |= 1; |
c4b681fd LC |
184 | if (sprintf (buf, "%f", -1.0 / 0.0) < 0 |
185 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
0f00f2c3 | 186 | result |= 1; |
c4b681fd LC |
187 | if (sprintf (buf, "%f", zero / zero) < 0 |
188 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 189 | result |= 2; |
c4b681fd LC |
190 | if (sprintf (buf, "%e", 1.0 / 0.0) < 0 |
191 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
0f00f2c3 | 192 | result |= 4; |
c4b681fd LC |
193 | if (sprintf (buf, "%e", -1.0 / 0.0) < 0 |
194 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
0f00f2c3 | 195 | result |= 4; |
c4b681fd LC |
196 | if (sprintf (buf, "%e", zero / zero) < 0 |
197 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 198 | result |= 8; |
c4b681fd LC |
199 | if (sprintf (buf, "%g", 1.0 / 0.0) < 0 |
200 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
0f00f2c3 | 201 | result |= 16; |
c4b681fd LC |
202 | if (sprintf (buf, "%g", -1.0 / 0.0) < 0 |
203 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
0f00f2c3 | 204 | result |= 16; |
c4b681fd LC |
205 | if (sprintf (buf, "%g", zero / zero) < 0 |
206 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 207 | result |= 32; |
c4b681fd LC |
208 | /* This test fails on HP-UX 10.20. */ |
209 | if (have_minus_zero ()) | |
210 | if (sprintf (buf, "%g", - zero) < 0 | |
211 | || strcmp (buf, "-0") != 0) | |
0f00f2c3 LC |
212 | result |= 64; |
213 | return result; | |
9157d901 LC |
214 | }]])], |
215 | [gl_cv_func_printf_infinite=yes], | |
216 | [gl_cv_func_printf_infinite=no], | |
217 | [ | |
c4b681fd | 218 | changequote(,)dnl |
9157d901 LC |
219 | case "$host_os" in |
220 | # Guess yes on glibc systems. | |
221 | *-gnu*) gl_cv_func_printf_infinite="guessing yes";; | |
222 | # Guess yes on FreeBSD >= 6. | |
223 | freebsd[1-5]*) gl_cv_func_printf_infinite="guessing no";; | |
224 | freebsd* | kfreebsd*) gl_cv_func_printf_infinite="guessing yes";; | |
225 | # Guess yes on MacOS X >= 10.3. | |
226 | darwin[1-6].*) gl_cv_func_printf_infinite="guessing no";; | |
227 | darwin*) gl_cv_func_printf_infinite="guessing yes";; | |
228 | # Guess yes on HP-UX >= 11. | |
229 | hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite="guessing no";; | |
230 | hpux*) gl_cv_func_printf_infinite="guessing yes";; | |
231 | # Guess yes on NetBSD >= 3. | |
232 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
233 | gl_cv_func_printf_infinite="guessing no";; | |
234 | netbsd*) gl_cv_func_printf_infinite="guessing yes";; | |
235 | # Guess yes on BeOS. | |
236 | beos*) gl_cv_func_printf_infinite="guessing yes";; | |
237 | # If we don't know, assume the worst. | |
238 | *) gl_cv_func_printf_infinite="guessing no";; | |
239 | esac | |
c4b681fd | 240 | changequote([,])dnl |
9157d901 | 241 | ]) |
c4b681fd LC |
242 | ]) |
243 | ]) | |
244 | ||
245 | dnl Test whether the *printf family of functions supports infinite and NaN | |
246 | dnl 'long double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001) | |
247 | dnl Result is gl_cv_func_printf_infinite_long_double. | |
248 | ||
249 | AC_DEFUN([gl_PRINTF_INFINITE_LONG_DOUBLE], | |
250 | [ | |
251 | AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) | |
252 | AC_REQUIRE([AC_PROG_CC]) | |
253 | AC_REQUIRE([gl_BIGENDIAN]) | |
254 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
255 | dnl The user can set or unset the variable gl_printf_safe to indicate | |
256 | dnl that he wishes a safe handling of non-IEEE-754 'long double' values. | |
257 | if test -n "$gl_printf_safe"; then | |
258 | AC_DEFINE([CHECK_PRINTF_SAFE], [1], | |
259 | [Define if you wish *printf() functions that have a safe handling of | |
260 | non-IEEE-754 'long double' values.]) | |
261 | fi | |
262 | case "$gl_cv_func_printf_long_double" in | |
263 | *yes) | |
264 | AC_CACHE_CHECK([whether printf supports infinite 'long double' arguments], | |
265 | [gl_cv_func_printf_infinite_long_double], | |
266 | [ | |
9157d901 LC |
267 | AC_RUN_IFELSE( |
268 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
269 | ]GL_NOCRASH[ |
270 | #include <float.h> | |
271 | #include <stdio.h> | |
272 | #include <string.h> | |
273 | static int | |
274 | strisnan (const char *string, size_t start_index, size_t end_index) | |
275 | { | |
276 | if (start_index < end_index) | |
277 | { | |
278 | if (string[start_index] == '-') | |
279 | start_index++; | |
280 | if (start_index + 3 <= end_index | |
281 | && memcmp (string + start_index, "nan", 3) == 0) | |
282 | { | |
283 | start_index += 3; | |
284 | if (start_index == end_index | |
285 | || (string[start_index] == '(' && string[end_index - 1] == ')')) | |
286 | return 1; | |
287 | } | |
288 | } | |
289 | return 0; | |
290 | } | |
291 | static char buf[10000]; | |
292 | static long double zeroL = 0.0L; | |
293 | int main () | |
294 | { | |
0f00f2c3 | 295 | int result = 0; |
c4b681fd LC |
296 | nocrash_init(); |
297 | if (sprintf (buf, "%Lf", 1.0L / 0.0L) < 0 | |
298 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
0f00f2c3 | 299 | result |= 1; |
c4b681fd LC |
300 | if (sprintf (buf, "%Lf", -1.0L / 0.0L) < 0 |
301 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
0f00f2c3 | 302 | result |= 1; |
c4b681fd LC |
303 | if (sprintf (buf, "%Lf", zeroL / zeroL) < 0 |
304 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 305 | result |= 1; |
c4b681fd LC |
306 | if (sprintf (buf, "%Le", 1.0L / 0.0L) < 0 |
307 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
0f00f2c3 | 308 | result |= 1; |
c4b681fd LC |
309 | if (sprintf (buf, "%Le", -1.0L / 0.0L) < 0 |
310 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
0f00f2c3 | 311 | result |= 1; |
c4b681fd LC |
312 | if (sprintf (buf, "%Le", zeroL / zeroL) < 0 |
313 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 314 | result |= 1; |
c4b681fd LC |
315 | if (sprintf (buf, "%Lg", 1.0L / 0.0L) < 0 |
316 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
0f00f2c3 | 317 | result |= 1; |
c4b681fd LC |
318 | if (sprintf (buf, "%Lg", -1.0L / 0.0L) < 0 |
319 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
0f00f2c3 | 320 | result |= 1; |
c4b681fd LC |
321 | if (sprintf (buf, "%Lg", zeroL / zeroL) < 0 |
322 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 323 | result |= 1; |
c4b681fd LC |
324 | #if CHECK_PRINTF_SAFE && ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) |
325 | /* Representation of an 80-bit 'long double' as an initializer for a sequence | |
326 | of 'unsigned int' words. */ | |
327 | # ifdef WORDS_BIGENDIAN | |
328 | # define LDBL80_WORDS(exponent,manthi,mantlo) \ | |
329 | { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \ | |
330 | ((unsigned int) (manthi) << 16) | (unsigned int) (mantlo) >> 16), \ | |
331 | (unsigned int) (mantlo) << 16 \ | |
332 | } | |
333 | # else | |
334 | # define LDBL80_WORDS(exponent,manthi,mantlo) \ | |
335 | { mantlo, manthi, exponent } | |
336 | # endif | |
337 | { /* Quiet NaN. */ | |
338 | static union { unsigned int word[4]; long double value; } x = | |
339 | { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; | |
340 | if (sprintf (buf, "%Lf", x.value) < 0 | |
341 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 342 | result |= 2; |
c4b681fd LC |
343 | if (sprintf (buf, "%Le", x.value) < 0 |
344 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 345 | result |= 2; |
c4b681fd LC |
346 | if (sprintf (buf, "%Lg", x.value) < 0 |
347 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 348 | result |= 2; |
c4b681fd LC |
349 | } |
350 | { | |
351 | /* Signalling NaN. */ | |
352 | static union { unsigned int word[4]; long double value; } x = | |
353 | { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; | |
354 | if (sprintf (buf, "%Lf", x.value) < 0 | |
355 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 356 | result |= 2; |
c4b681fd LC |
357 | if (sprintf (buf, "%Le", x.value) < 0 |
358 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 359 | result |= 2; |
c4b681fd LC |
360 | if (sprintf (buf, "%Lg", x.value) < 0 |
361 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 362 | result |= 2; |
c4b681fd LC |
363 | } |
364 | { /* Pseudo-NaN. */ | |
365 | static union { unsigned int word[4]; long double value; } x = | |
366 | { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; | |
367 | if (sprintf (buf, "%Lf", x.value) < 0 | |
368 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 369 | result |= 4; |
c4b681fd LC |
370 | if (sprintf (buf, "%Le", x.value) < 0 |
371 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 372 | result |= 4; |
c4b681fd LC |
373 | if (sprintf (buf, "%Lg", x.value) < 0 |
374 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 375 | result |= 4; |
c4b681fd LC |
376 | } |
377 | { /* Pseudo-Infinity. */ | |
378 | static union { unsigned int word[4]; long double value; } x = | |
379 | { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; | |
380 | if (sprintf (buf, "%Lf", x.value) < 0 | |
381 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 382 | result |= 8; |
c4b681fd LC |
383 | if (sprintf (buf, "%Le", x.value) < 0 |
384 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 385 | result |= 8; |
c4b681fd LC |
386 | if (sprintf (buf, "%Lg", x.value) < 0 |
387 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 388 | result |= 8; |
c4b681fd LC |
389 | } |
390 | { /* Pseudo-Zero. */ | |
391 | static union { unsigned int word[4]; long double value; } x = | |
392 | { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; | |
393 | if (sprintf (buf, "%Lf", x.value) < 0 | |
394 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 395 | result |= 16; |
c4b681fd LC |
396 | if (sprintf (buf, "%Le", x.value) < 0 |
397 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 398 | result |= 16; |
c4b681fd LC |
399 | if (sprintf (buf, "%Lg", x.value) < 0 |
400 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 401 | result |= 16; |
c4b681fd LC |
402 | } |
403 | { /* Unnormalized number. */ | |
404 | static union { unsigned int word[4]; long double value; } x = | |
405 | { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; | |
406 | if (sprintf (buf, "%Lf", x.value) < 0 | |
407 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 408 | result |= 32; |
c4b681fd LC |
409 | if (sprintf (buf, "%Le", x.value) < 0 |
410 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 411 | result |= 32; |
c4b681fd LC |
412 | if (sprintf (buf, "%Lg", x.value) < 0 |
413 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 414 | result |= 32; |
c4b681fd LC |
415 | } |
416 | { /* Pseudo-Denormal. */ | |
417 | static union { unsigned int word[4]; long double value; } x = | |
418 | { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; | |
419 | if (sprintf (buf, "%Lf", x.value) < 0 | |
420 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 421 | result |= 64; |
c4b681fd LC |
422 | if (sprintf (buf, "%Le", x.value) < 0 |
423 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 424 | result |= 64; |
c4b681fd LC |
425 | if (sprintf (buf, "%Lg", x.value) < 0 |
426 | || !strisnan (buf, 0, strlen (buf))) | |
0f00f2c3 | 427 | result |= 64; |
c4b681fd LC |
428 | } |
429 | #endif | |
0f00f2c3 | 430 | return result; |
9157d901 LC |
431 | }]])], |
432 | [gl_cv_func_printf_infinite_long_double=yes], | |
433 | [gl_cv_func_printf_infinite_long_double=no], | |
434 | [ | |
c4b681fd | 435 | changequote(,)dnl |
9157d901 LC |
436 | case "$host_cpu" in |
437 | # Guess no on ia64, x86_64, i386. | |
438 | ia64 | x86_64 | i*86) gl_cv_func_printf_infinite_long_double="guessing no";; | |
439 | *) | |
440 | case "$host_os" in | |
441 | # Guess yes on glibc systems. | |
442 | *-gnu*) gl_cv_func_printf_infinite_long_double="guessing yes";; | |
443 | # Guess yes on FreeBSD >= 6. | |
444 | freebsd[1-5]*) gl_cv_func_printf_infinite_long_double="guessing no";; | |
445 | freebsd* | kfreebsd*) gl_cv_func_printf_infinite_long_double="guessing yes";; | |
9157d901 LC |
446 | # Guess yes on HP-UX >= 11. |
447 | hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite_long_double="guessing no";; | |
448 | hpux*) gl_cv_func_printf_infinite_long_double="guessing yes";; | |
9157d901 LC |
449 | # If we don't know, assume the worst. |
450 | *) gl_cv_func_printf_infinite_long_double="guessing no";; | |
451 | esac | |
452 | ;; | |
453 | esac | |
c4b681fd | 454 | changequote([,])dnl |
9157d901 | 455 | ]) |
c4b681fd LC |
456 | ]) |
457 | ;; | |
458 | *) | |
459 | gl_cv_func_printf_infinite_long_double="irrelevant" | |
460 | ;; | |
461 | esac | |
462 | ]) | |
463 | ||
464 | dnl Test whether the *printf family of functions supports the 'a' and 'A' | |
465 | dnl conversion specifier for hexadecimal output of floating-point numbers. | |
466 | dnl (ISO C99, POSIX:2001) | |
467 | dnl Result is gl_cv_func_printf_directive_a. | |
468 | ||
469 | AC_DEFUN([gl_PRINTF_DIRECTIVE_A], | |
470 | [ | |
471 | AC_REQUIRE([AC_PROG_CC]) | |
472 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
473 | AC_CACHE_CHECK([whether printf supports the 'a' and 'A' directives], | |
474 | [gl_cv_func_printf_directive_a], | |
475 | [ | |
9157d901 LC |
476 | AC_RUN_IFELSE( |
477 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
478 | #include <stdio.h> |
479 | #include <string.h> | |
480 | static char buf[100]; | |
481 | int main () | |
482 | { | |
0f00f2c3 | 483 | int result = 0; |
c4b681fd LC |
484 | if (sprintf (buf, "%a %d", 3.1416015625, 33, 44, 55) < 0 |
485 | || (strcmp (buf, "0x1.922p+1 33") != 0 | |
486 | && strcmp (buf, "0x3.244p+0 33") != 0 | |
487 | && strcmp (buf, "0x6.488p-1 33") != 0 | |
488 | && strcmp (buf, "0xc.91p-2 33") != 0)) | |
0f00f2c3 | 489 | result |= 1; |
c4b681fd LC |
490 | if (sprintf (buf, "%A %d", -3.1416015625, 33, 44, 55) < 0 |
491 | || (strcmp (buf, "-0X1.922P+1 33") != 0 | |
492 | && strcmp (buf, "-0X3.244P+0 33") != 0 | |
493 | && strcmp (buf, "-0X6.488P-1 33") != 0 | |
494 | && strcmp (buf, "-0XC.91P-2 33") != 0)) | |
0f00f2c3 | 495 | result |= 2; |
c4b681fd LC |
496 | /* This catches a FreeBSD 6.1 bug: it doesn't round. */ |
497 | if (sprintf (buf, "%.2a %d", 1.51, 33, 44, 55) < 0 | |
498 | || (strcmp (buf, "0x1.83p+0 33") != 0 | |
499 | && strcmp (buf, "0x3.05p-1 33") != 0 | |
500 | && strcmp (buf, "0x6.0ap-2 33") != 0 | |
501 | && strcmp (buf, "0xc.14p-3 33") != 0)) | |
0f00f2c3 | 502 | result |= 4; |
c4b681fd LC |
503 | /* This catches a FreeBSD 6.1 bug. See |
504 | <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */ | |
505 | if (sprintf (buf, "%010a %d", 1.0 / 0.0, 33, 44, 55) < 0 | |
506 | || buf[0] == '0') | |
0f00f2c3 | 507 | result |= 8; |
c4b681fd LC |
508 | /* This catches a MacOS X 10.3.9 (Darwin 7.9) bug. */ |
509 | if (sprintf (buf, "%.1a", 1.999) < 0 | |
510 | || (strcmp (buf, "0x1.0p+1") != 0 | |
511 | && strcmp (buf, "0x2.0p+0") != 0 | |
512 | && strcmp (buf, "0x4.0p-1") != 0 | |
513 | && strcmp (buf, "0x8.0p-2") != 0)) | |
0f00f2c3 | 514 | result |= 16; |
c4b681fd LC |
515 | /* This catches the same MacOS X 10.3.9 (Darwin 7.9) bug and also a |
516 | glibc 2.4 bug <http://sourceware.org/bugzilla/show_bug.cgi?id=2908>. */ | |
517 | if (sprintf (buf, "%.1La", 1.999L) < 0 | |
518 | || (strcmp (buf, "0x1.0p+1") != 0 | |
519 | && strcmp (buf, "0x2.0p+0") != 0 | |
520 | && strcmp (buf, "0x4.0p-1") != 0 | |
521 | && strcmp (buf, "0x8.0p-2") != 0)) | |
0f00f2c3 LC |
522 | result |= 32; |
523 | return result; | |
9157d901 LC |
524 | }]])], |
525 | [gl_cv_func_printf_directive_a=yes], | |
526 | [gl_cv_func_printf_directive_a=no], | |
527 | [ | |
528 | case "$host_os" in | |
529 | # Guess yes on glibc >= 2.5 systems. | |
530 | *-gnu*) | |
531 | AC_EGREP_CPP([BZ2908], [ | |
532 | #include <features.h> | |
533 | #ifdef __GNU_LIBRARY__ | |
0f00f2c3 | 534 | #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 5) || (__GLIBC__ > 2)) && !defined __UCLIBC__ |
9157d901 LC |
535 | BZ2908 |
536 | #endif | |
537 | #endif | |
538 | ], | |
539 | [gl_cv_func_printf_directive_a="guessing yes"], | |
540 | [gl_cv_func_printf_directive_a="guessing no"]) | |
541 | ;; | |
542 | # If we don't know, assume the worst. | |
543 | *) gl_cv_func_printf_directive_a="guessing no";; | |
544 | esac | |
545 | ]) | |
c4b681fd LC |
546 | ]) |
547 | ]) | |
548 | ||
549 | dnl Test whether the *printf family of functions supports the %F format | |
550 | dnl directive. (ISO C99, POSIX:2001) | |
551 | dnl Result is gl_cv_func_printf_directive_f. | |
552 | ||
553 | AC_DEFUN([gl_PRINTF_DIRECTIVE_F], | |
554 | [ | |
555 | AC_REQUIRE([AC_PROG_CC]) | |
556 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
557 | AC_CACHE_CHECK([whether printf supports the 'F' directive], | |
558 | [gl_cv_func_printf_directive_f], | |
559 | [ | |
9157d901 LC |
560 | AC_RUN_IFELSE( |
561 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
562 | #include <stdio.h> |
563 | #include <string.h> | |
564 | static char buf[100]; | |
565 | int main () | |
566 | { | |
0f00f2c3 | 567 | int result = 0; |
c4b681fd LC |
568 | if (sprintf (buf, "%F %d", 1234567.0, 33, 44, 55) < 0 |
569 | || strcmp (buf, "1234567.000000 33") != 0) | |
0f00f2c3 | 570 | result |= 1; |
c4b681fd LC |
571 | if (sprintf (buf, "%F", 1.0 / 0.0) < 0 |
572 | || (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0)) | |
0f00f2c3 | 573 | result |= 2; |
c4b681fd LC |
574 | /* This catches a Cygwin 1.5.x bug. */ |
575 | if (sprintf (buf, "%.F", 1234.0) < 0 | |
576 | || strcmp (buf, "1234") != 0) | |
0f00f2c3 LC |
577 | result |= 4; |
578 | return result; | |
9157d901 LC |
579 | }]])], |
580 | [gl_cv_func_printf_directive_f=yes], | |
581 | [gl_cv_func_printf_directive_f=no], | |
582 | [ | |
c4b681fd | 583 | changequote(,)dnl |
9157d901 LC |
584 | case "$host_os" in |
585 | # Guess yes on glibc systems. | |
586 | *-gnu*) gl_cv_func_printf_directive_f="guessing yes";; | |
587 | # Guess yes on FreeBSD >= 6. | |
588 | freebsd[1-5]*) gl_cv_func_printf_directive_f="guessing no";; | |
589 | freebsd* | kfreebsd*) gl_cv_func_printf_directive_f="guessing yes";; | |
590 | # Guess yes on MacOS X >= 10.3. | |
591 | darwin[1-6].*) gl_cv_func_printf_directive_f="guessing no";; | |
592 | darwin*) gl_cv_func_printf_directive_f="guessing yes";; | |
593 | # Guess yes on Solaris >= 2.10. | |
49114fd4 LC |
594 | solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";; |
595 | solaris*) gl_cv_func_printf_sizes_c99="guessing no";; | |
9157d901 LC |
596 | # If we don't know, assume the worst. |
597 | *) gl_cv_func_printf_directive_f="guessing no";; | |
598 | esac | |
c4b681fd | 599 | changequote([,])dnl |
9157d901 | 600 | ]) |
c4b681fd LC |
601 | ]) |
602 | ]) | |
603 | ||
604 | dnl Test whether the *printf family of functions supports the %n format | |
605 | dnl directive. (ISO C99, POSIX:2001) | |
606 | dnl Result is gl_cv_func_printf_directive_n. | |
607 | ||
608 | AC_DEFUN([gl_PRINTF_DIRECTIVE_N], | |
609 | [ | |
610 | AC_REQUIRE([AC_PROG_CC]) | |
611 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
612 | AC_CACHE_CHECK([whether printf supports the 'n' directive], | |
613 | [gl_cv_func_printf_directive_n], | |
614 | [ | |
9157d901 LC |
615 | AC_RUN_IFELSE( |
616 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
617 | #include <stdio.h> |
618 | #include <string.h> | |
619 | static char fmtstring[10]; | |
620 | static char buf[100]; | |
621 | int main () | |
622 | { | |
623 | int count = -1; | |
624 | /* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2) | |
625 | support %n in format strings in read-only memory but not in writable | |
626 | memory. */ | |
627 | strcpy (fmtstring, "%d %n"); | |
628 | if (sprintf (buf, fmtstring, 123, &count, 33, 44, 55) < 0 | |
629 | || strcmp (buf, "123 ") != 0 | |
630 | || count != 4) | |
631 | return 1; | |
632 | return 0; | |
9157d901 LC |
633 | }]])], |
634 | [gl_cv_func_printf_directive_n=yes], | |
635 | [gl_cv_func_printf_directive_n=no], | |
636 | [ | |
c4b681fd | 637 | changequote(,)dnl |
9157d901 LC |
638 | case "$host_os" in |
639 | *) gl_cv_func_printf_directive_n="guessing yes";; | |
640 | esac | |
c4b681fd | 641 | changequote([,])dnl |
9157d901 | 642 | ]) |
c4b681fd LC |
643 | ]) |
644 | ]) | |
645 | ||
646 | dnl Test whether the *printf family of functions supports the %ls format | |
647 | dnl directive and in particular, when a precision is specified, whether | |
648 | dnl the functions stop converting the wide string argument when the number | |
649 | dnl of bytes that have been produced by this conversion equals or exceeds | |
650 | dnl the precision. | |
651 | dnl Result is gl_cv_func_printf_directive_ls. | |
652 | ||
653 | AC_DEFUN([gl_PRINTF_DIRECTIVE_LS], | |
654 | [ | |
655 | AC_REQUIRE([AC_PROG_CC]) | |
656 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
657 | AC_CACHE_CHECK([whether printf supports the 'ls' directive], | |
658 | [gl_cv_func_printf_directive_ls], | |
659 | [ | |
9157d901 LC |
660 | AC_RUN_IFELSE( |
661 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
662 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before |
663 | <wchar.h>. | |
664 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
665 | included before <wchar.h>. */ | |
666 | #include <stddef.h> | |
667 | #include <stdio.h> | |
668 | #include <time.h> | |
669 | #include <wchar.h> | |
670 | #include <string.h> | |
671 | int main () | |
672 | { | |
0f00f2c3 | 673 | int result = 0; |
c4b681fd LC |
674 | char buf[100]; |
675 | /* Test whether %ls works at all. | |
676 | This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on | |
677 | Cygwin 1.5. */ | |
678 | { | |
679 | static const wchar_t wstring[] = { 'a', 'b', 'c', 0 }; | |
680 | buf[0] = '\0'; | |
681 | if (sprintf (buf, "%ls", wstring) < 0 | |
682 | || strcmp (buf, "abc") != 0) | |
0f00f2c3 | 683 | result |= 1; |
c4b681fd LC |
684 | } |
685 | /* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an | |
686 | assertion failure inside libc), but not on OpenBSD 4.0. */ | |
687 | { | |
688 | static const wchar_t wstring[] = { 'a', 0 }; | |
689 | buf[0] = '\0'; | |
690 | if (sprintf (buf, "%ls", wstring) < 0 | |
691 | || strcmp (buf, "a") != 0) | |
0f00f2c3 | 692 | result |= 2; |
c4b681fd LC |
693 | } |
694 | /* Test whether precisions in %ls are supported as specified in ISO C 99 | |
695 | section 7.19.6.1: | |
696 | "If a precision is specified, no more than that many bytes are written | |
697 | (including shift sequences, if any), and the array shall contain a | |
698 | null wide character if, to equal the multibyte character sequence | |
699 | length given by the precision, the function would need to access a | |
700 | wide character one past the end of the array." | |
701 | This test fails on Solaris 10. */ | |
702 | { | |
703 | static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 }; | |
704 | buf[0] = '\0'; | |
705 | if (sprintf (buf, "%.2ls", wstring) < 0 | |
706 | || strcmp (buf, "ab") != 0) | |
0f00f2c3 | 707 | result |= 8; |
c4b681fd | 708 | } |
0f00f2c3 | 709 | return result; |
9157d901 LC |
710 | }]])], |
711 | [gl_cv_func_printf_directive_ls=yes], | |
712 | [gl_cv_func_printf_directive_ls=no], | |
713 | [ | |
c4b681fd | 714 | changequote(,)dnl |
9157d901 LC |
715 | case "$host_os" in |
716 | openbsd*) gl_cv_func_printf_directive_ls="guessing no";; | |
717 | irix*) gl_cv_func_printf_directive_ls="guessing no";; | |
718 | solaris*) gl_cv_func_printf_directive_ls="guessing no";; | |
719 | cygwin*) gl_cv_func_printf_directive_ls="guessing no";; | |
720 | beos* | haiku*) gl_cv_func_printf_directive_ls="guessing no";; | |
721 | *) gl_cv_func_printf_directive_ls="guessing yes";; | |
722 | esac | |
c4b681fd | 723 | changequote([,])dnl |
9157d901 | 724 | ]) |
c4b681fd LC |
725 | ]) |
726 | ]) | |
727 | ||
728 | dnl Test whether the *printf family of functions supports POSIX/XSI format | |
729 | dnl strings with positions. (POSIX:2001) | |
730 | dnl Result is gl_cv_func_printf_positions. | |
731 | ||
732 | AC_DEFUN([gl_PRINTF_POSITIONS], | |
733 | [ | |
734 | AC_REQUIRE([AC_PROG_CC]) | |
735 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
736 | AC_CACHE_CHECK([whether printf supports POSIX/XSI format strings with positions], | |
737 | [gl_cv_func_printf_positions], | |
738 | [ | |
9157d901 LC |
739 | AC_RUN_IFELSE( |
740 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
741 | #include <stdio.h> |
742 | #include <string.h> | |
743 | /* The string "%2$d %1$d", with dollar characters protected from the shell's | |
744 | dollar expansion (possibly an autoconf bug). */ | |
745 | static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' }; | |
746 | static char buf[100]; | |
747 | int main () | |
748 | { | |
749 | sprintf (buf, format, 33, 55); | |
750 | return (strcmp (buf, "55 33") != 0); | |
9157d901 LC |
751 | }]])], |
752 | [gl_cv_func_printf_positions=yes], | |
753 | [gl_cv_func_printf_positions=no], | |
754 | [ | |
c4b681fd | 755 | changequote(,)dnl |
9157d901 LC |
756 | case "$host_os" in |
757 | netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*) | |
758 | gl_cv_func_printf_positions="guessing no";; | |
759 | beos*) gl_cv_func_printf_positions="guessing no";; | |
760 | mingw* | pw*) gl_cv_func_printf_positions="guessing no";; | |
761 | *) gl_cv_func_printf_positions="guessing yes";; | |
762 | esac | |
c4b681fd | 763 | changequote([,])dnl |
9157d901 | 764 | ]) |
c4b681fd LC |
765 | ]) |
766 | ]) | |
767 | ||
768 | dnl Test whether the *printf family of functions supports POSIX/XSI format | |
769 | dnl strings with the ' flag for grouping of decimal digits. (POSIX:2001) | |
770 | dnl Result is gl_cv_func_printf_flag_grouping. | |
771 | ||
772 | AC_DEFUN([gl_PRINTF_FLAG_GROUPING], | |
773 | [ | |
774 | AC_REQUIRE([AC_PROG_CC]) | |
775 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
776 | AC_CACHE_CHECK([whether printf supports the grouping flag], | |
777 | [gl_cv_func_printf_flag_grouping], | |
778 | [ | |
9157d901 LC |
779 | AC_RUN_IFELSE( |
780 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
781 | #include <stdio.h> |
782 | #include <string.h> | |
783 | static char buf[100]; | |
784 | int main () | |
785 | { | |
786 | if (sprintf (buf, "%'d %d", 1234567, 99) < 0 | |
787 | || buf[strlen (buf) - 1] != '9') | |
788 | return 1; | |
789 | return 0; | |
9157d901 LC |
790 | }]])], |
791 | [gl_cv_func_printf_flag_grouping=yes], | |
792 | [gl_cv_func_printf_flag_grouping=no], | |
793 | [ | |
c4b681fd | 794 | changequote(,)dnl |
9157d901 LC |
795 | case "$host_os" in |
796 | cygwin*) gl_cv_func_printf_flag_grouping="guessing no";; | |
797 | netbsd*) gl_cv_func_printf_flag_grouping="guessing no";; | |
798 | mingw* | pw*) gl_cv_func_printf_flag_grouping="guessing no";; | |
799 | *) gl_cv_func_printf_flag_grouping="guessing yes";; | |
800 | esac | |
c4b681fd | 801 | changequote([,])dnl |
9157d901 | 802 | ]) |
c4b681fd LC |
803 | ]) |
804 | ]) | |
805 | ||
806 | dnl Test whether the *printf family of functions supports the - flag correctly. | |
807 | dnl (ISO C99.) See | |
808 | dnl <http://lists.gnu.org/archive/html/bug-coreutils/2008-02/msg00035.html> | |
809 | dnl Result is gl_cv_func_printf_flag_leftadjust. | |
810 | ||
811 | AC_DEFUN([gl_PRINTF_FLAG_LEFTADJUST], | |
812 | [ | |
813 | AC_REQUIRE([AC_PROG_CC]) | |
814 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
815 | AC_CACHE_CHECK([whether printf supports the left-adjust flag correctly], | |
816 | [gl_cv_func_printf_flag_leftadjust], | |
817 | [ | |
9157d901 LC |
818 | AC_RUN_IFELSE( |
819 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
820 | #include <stdio.h> |
821 | #include <string.h> | |
822 | static char buf[100]; | |
823 | int main () | |
824 | { | |
825 | /* Check that a '-' flag is not annihilated by a negative width. */ | |
826 | if (sprintf (buf, "a%-*sc", -3, "b") < 0 | |
827 | || strcmp (buf, "ab c") != 0) | |
828 | return 1; | |
829 | return 0; | |
9157d901 | 830 | }]])], |
c4b681fd LC |
831 | [gl_cv_func_printf_flag_leftadjust=yes], |
832 | [gl_cv_func_printf_flag_leftadjust=no], | |
833 | [ | |
834 | changequote(,)dnl | |
835 | case "$host_os" in | |
836 | # Guess yes on HP-UX 11. | |
837 | hpux11*) gl_cv_func_printf_flag_leftadjust="guessing yes";; | |
838 | # Guess no on HP-UX 10 and older. | |
839 | hpux*) gl_cv_func_printf_flag_leftadjust="guessing no";; | |
840 | # Guess yes otherwise. | |
841 | *) gl_cv_func_printf_flag_leftadjust="guessing yes";; | |
842 | esac | |
843 | changequote([,])dnl | |
844 | ]) | |
845 | ]) | |
846 | ]) | |
847 | ||
848 | dnl Test whether the *printf family of functions supports padding of non-finite | |
849 | dnl values with the 0 flag correctly. (ISO C99 + TC1 + TC2.) See | |
850 | dnl <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> | |
851 | dnl Result is gl_cv_func_printf_flag_zero. | |
852 | ||
853 | AC_DEFUN([gl_PRINTF_FLAG_ZERO], | |
854 | [ | |
855 | AC_REQUIRE([AC_PROG_CC]) | |
856 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
857 | AC_CACHE_CHECK([whether printf supports the zero flag correctly], | |
858 | [gl_cv_func_printf_flag_zero], | |
859 | [ | |
9157d901 LC |
860 | AC_RUN_IFELSE( |
861 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
862 | #include <stdio.h> |
863 | #include <string.h> | |
864 | static char buf[100]; | |
865 | int main () | |
866 | { | |
867 | if (sprintf (buf, "%010f", 1.0 / 0.0, 33, 44, 55) < 0 | |
868 | || (strcmp (buf, " inf") != 0 | |
869 | && strcmp (buf, " infinity") != 0)) | |
870 | return 1; | |
871 | return 0; | |
9157d901 LC |
872 | }]])], |
873 | [gl_cv_func_printf_flag_zero=yes], | |
874 | [gl_cv_func_printf_flag_zero=no], | |
875 | [ | |
c4b681fd | 876 | changequote(,)dnl |
9157d901 LC |
877 | case "$host_os" in |
878 | # Guess yes on glibc systems. | |
879 | *-gnu*) gl_cv_func_printf_flag_zero="guessing yes";; | |
880 | # Guess yes on BeOS. | |
881 | beos*) gl_cv_func_printf_flag_zero="guessing yes";; | |
882 | # If we don't know, assume the worst. | |
883 | *) gl_cv_func_printf_flag_zero="guessing no";; | |
884 | esac | |
c4b681fd | 885 | changequote([,])dnl |
9157d901 | 886 | ]) |
c4b681fd LC |
887 | ]) |
888 | ]) | |
889 | ||
890 | dnl Test whether the *printf family of functions supports large precisions. | |
891 | dnl On mingw, precisions larger than 512 are treated like 512, in integer, | |
0f00f2c3 | 892 | dnl floating-point or pointer output. On Solaris 10/x86, precisions larger |
49114fd4 LC |
893 | dnl than 510 in floating-point output crash the program. On Solaris 10/SPARC, |
894 | dnl precisions larger than 510 in floating-point output yield wrong results. | |
231c0e0e LC |
895 | dnl On AIX 7.1, precisions larger than 998 in floating-point output yield |
896 | dnl wrong results. On BeOS, precisions larger than 1044 crash the program. | |
c4b681fd LC |
897 | dnl Result is gl_cv_func_printf_precision. |
898 | ||
899 | AC_DEFUN([gl_PRINTF_PRECISION], | |
900 | [ | |
901 | AC_REQUIRE([AC_PROG_CC]) | |
902 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
903 | AC_CACHE_CHECK([whether printf supports large precisions], | |
904 | [gl_cv_func_printf_precision], | |
905 | [ | |
9157d901 LC |
906 | AC_RUN_IFELSE( |
907 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
908 | #include <stdio.h> |
909 | #include <string.h> | |
910 | static char buf[5000]; | |
911 | int main () | |
912 | { | |
0f00f2c3 | 913 | int result = 0; |
c4b681fd LC |
914 | #ifdef __BEOS__ |
915 | /* On BeOS, this would crash and show a dialog box. Avoid the crash. */ | |
916 | return 1; | |
917 | #endif | |
918 | if (sprintf (buf, "%.4000d %d", 1, 33, 44) < 4000 + 3) | |
0f00f2c3 LC |
919 | result |= 1; |
920 | if (sprintf (buf, "%.4000f %d", 1.0, 33, 44) < 4000 + 5) | |
921 | result |= 2; | |
49114fd4 LC |
922 | if (sprintf (buf, "%.511f %d", 1.0, 33, 44) < 511 + 5 |
923 | || buf[0] != '1') | |
924 | result |= 4; | |
231c0e0e LC |
925 | if (sprintf (buf, "%.999f %d", 1.0, 33, 44) < 999 + 5 |
926 | || buf[0] != '1') | |
927 | result |= 4; | |
0f00f2c3 | 928 | return result; |
9157d901 LC |
929 | }]])], |
930 | [gl_cv_func_printf_precision=yes], | |
931 | [gl_cv_func_printf_precision=no], | |
932 | [ | |
c4b681fd | 933 | changequote(,)dnl |
9157d901 | 934 | case "$host_os" in |
0f00f2c3 LC |
935 | # Guess no only on Solaris, native Win32, and BeOS systems. |
936 | solaris*) gl_cv_func_printf_precision="guessing no" ;; | |
9157d901 LC |
937 | mingw* | pw*) gl_cv_func_printf_precision="guessing no" ;; |
938 | beos*) gl_cv_func_printf_precision="guessing no" ;; | |
939 | *) gl_cv_func_printf_precision="guessing yes" ;; | |
940 | esac | |
c4b681fd | 941 | changequote([,])dnl |
9157d901 | 942 | ]) |
c4b681fd LC |
943 | ]) |
944 | ]) | |
945 | ||
946 | dnl Test whether the *printf family of functions recovers gracefully in case | |
947 | dnl of an out-of-memory condition, or whether it crashes the entire program. | |
948 | dnl Result is gl_cv_func_printf_enomem. | |
949 | ||
950 | AC_DEFUN([gl_PRINTF_ENOMEM], | |
951 | [ | |
952 | AC_REQUIRE([AC_PROG_CC]) | |
953 | AC_REQUIRE([gl_MULTIARCH]) | |
954 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
955 | AC_CACHE_CHECK([whether printf survives out-of-memory conditions], | |
956 | [gl_cv_func_printf_enomem], | |
957 | [ | |
958 | gl_cv_func_printf_enomem="guessing no" | |
959 | if test "$cross_compiling" = no; then | |
960 | if test $APPLE_UNIVERSAL_BUILD = 0; then | |
961 | AC_LANG_CONFTEST([AC_LANG_SOURCE([ | |
962 | ]GL_NOCRASH[ | |
963 | changequote(,)dnl | |
964 | #include <stdio.h> | |
965 | #include <sys/types.h> | |
966 | #include <sys/time.h> | |
967 | #include <sys/resource.h> | |
968 | #include <errno.h> | |
969 | int main() | |
970 | { | |
971 | struct rlimit limit; | |
972 | int ret; | |
973 | nocrash_init (); | |
974 | /* Some printf implementations allocate temporary space with malloc. */ | |
975 | /* On BSD systems, malloc() is limited by RLIMIT_DATA. */ | |
976 | #ifdef RLIMIT_DATA | |
977 | if (getrlimit (RLIMIT_DATA, &limit) < 0) | |
978 | return 77; | |
979 | if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) | |
980 | limit.rlim_max = 5000000; | |
981 | limit.rlim_cur = limit.rlim_max; | |
982 | if (setrlimit (RLIMIT_DATA, &limit) < 0) | |
983 | return 77; | |
984 | #endif | |
985 | /* On Linux systems, malloc() is limited by RLIMIT_AS. */ | |
986 | #ifdef RLIMIT_AS | |
987 | if (getrlimit (RLIMIT_AS, &limit) < 0) | |
988 | return 77; | |
989 | if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) | |
990 | limit.rlim_max = 5000000; | |
991 | limit.rlim_cur = limit.rlim_max; | |
992 | if (setrlimit (RLIMIT_AS, &limit) < 0) | |
993 | return 77; | |
994 | #endif | |
995 | /* Some printf implementations allocate temporary space on the stack. */ | |
996 | #ifdef RLIMIT_STACK | |
997 | if (getrlimit (RLIMIT_STACK, &limit) < 0) | |
998 | return 77; | |
999 | if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) | |
1000 | limit.rlim_max = 5000000; | |
1001 | limit.rlim_cur = limit.rlim_max; | |
1002 | if (setrlimit (RLIMIT_STACK, &limit) < 0) | |
1003 | return 77; | |
1004 | #endif | |
1005 | ret = printf ("%.5000000f", 1.0); | |
1006 | return !(ret == 5000002 || (ret < 0 && errno == ENOMEM)); | |
1007 | } | |
1008 | changequote([,])dnl | |
1009 | ])]) | |
1010 | if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then | |
1011 | (./conftest | |
1012 | result=$? | |
1013 | if test $result != 0 && test $result != 77; then result=1; fi | |
1014 | exit $result | |
1015 | ) >/dev/null 2>/dev/null | |
1016 | case $? in | |
1017 | 0) gl_cv_func_printf_enomem="yes" ;; | |
1018 | 77) gl_cv_func_printf_enomem="guessing no" ;; | |
1019 | *) gl_cv_func_printf_enomem="no" ;; | |
1020 | esac | |
1021 | else | |
1022 | gl_cv_func_printf_enomem="guessing no" | |
1023 | fi | |
1024 | rm -fr conftest* | |
1025 | else | |
1026 | dnl A universal build on Apple MacOS X platforms. | |
1027 | dnl The result would be 'no' in 32-bit mode and 'yes' in 64-bit mode. | |
1028 | dnl But we need a configuration result that is valid in both modes. | |
1029 | gl_cv_func_printf_enomem="guessing no" | |
1030 | fi | |
1031 | fi | |
1032 | if test "$gl_cv_func_printf_enomem" = "guessing no"; then | |
1033 | changequote(,)dnl | |
1034 | case "$host_os" in | |
1035 | # Guess yes on glibc systems. | |
1036 | *-gnu*) gl_cv_func_printf_enomem="guessing yes";; | |
1037 | # Guess yes on Solaris. | |
1038 | solaris*) gl_cv_func_printf_enomem="guessing yes";; | |
1039 | # Guess yes on AIX. | |
1040 | aix*) gl_cv_func_printf_enomem="guessing yes";; | |
1041 | # Guess yes on HP-UX/hppa. | |
1042 | hpux*) case "$host_cpu" in | |
1043 | hppa*) gl_cv_func_printf_enomem="guessing yes";; | |
1044 | *) gl_cv_func_printf_enomem="guessing no";; | |
1045 | esac | |
1046 | ;; | |
1047 | # Guess yes on IRIX. | |
1048 | irix*) gl_cv_func_printf_enomem="guessing yes";; | |
1049 | # Guess yes on OSF/1. | |
1050 | osf*) gl_cv_func_printf_enomem="guessing yes";; | |
1051 | # Guess yes on BeOS. | |
1052 | beos*) gl_cv_func_printf_enomem="guessing yes";; | |
1053 | # Guess yes on Haiku. | |
1054 | haiku*) gl_cv_func_printf_enomem="guessing yes";; | |
1055 | # If we don't know, assume the worst. | |
1056 | *) gl_cv_func_printf_enomem="guessing no";; | |
1057 | esac | |
1058 | changequote([,])dnl | |
1059 | fi | |
1060 | ]) | |
1061 | ]) | |
1062 | ||
1063 | dnl Test whether the snprintf function exists. (ISO C99, POSIX:2001) | |
1064 | dnl Result is ac_cv_func_snprintf. | |
1065 | ||
1066 | AC_DEFUN([gl_SNPRINTF_PRESENCE], | |
1067 | [ | |
1068 | AC_CHECK_FUNCS_ONCE([snprintf]) | |
1069 | ]) | |
1070 | ||
1071 | dnl Test whether the string produced by the snprintf function is always NUL | |
1072 | dnl terminated. (ISO C99, POSIX:2001) | |
1073 | dnl Result is gl_cv_func_snprintf_truncation_c99. | |
1074 | ||
1075 | AC_DEFUN([gl_SNPRINTF_TRUNCATION_C99], | |
1076 | [ | |
1077 | AC_REQUIRE([AC_PROG_CC]) | |
1078 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
1079 | AC_CACHE_CHECK([whether snprintf truncates the result as in C99], | |
1080 | [gl_cv_func_snprintf_truncation_c99], | |
1081 | [ | |
9157d901 LC |
1082 | AC_RUN_IFELSE( |
1083 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
1084 | #include <stdio.h> |
1085 | #include <string.h> | |
1086 | static char buf[100]; | |
1087 | int main () | |
1088 | { | |
1089 | strcpy (buf, "ABCDEF"); | |
1090 | snprintf (buf, 3, "%d %d", 4567, 89); | |
1091 | if (memcmp (buf, "45\0DEF", 6) != 0) | |
1092 | return 1; | |
1093 | return 0; | |
9157d901 LC |
1094 | }]])], |
1095 | [gl_cv_func_snprintf_truncation_c99=yes], | |
1096 | [gl_cv_func_snprintf_truncation_c99=no], | |
1097 | [ | |
c4b681fd | 1098 | changequote(,)dnl |
9157d901 LC |
1099 | case "$host_os" in |
1100 | # Guess yes on glibc systems. | |
1101 | *-gnu*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1102 | # Guess yes on FreeBSD >= 5. | |
1103 | freebsd[1-4]*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
1104 | freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1105 | # Guess yes on MacOS X >= 10.3. | |
1106 | darwin[1-6].*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
1107 | darwin*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1108 | # Guess yes on OpenBSD >= 3.9. | |
1109 | openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) | |
1110 | gl_cv_func_snprintf_truncation_c99="guessing no";; | |
1111 | openbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1112 | # Guess yes on Solaris >= 2.6. | |
49114fd4 LC |
1113 | solaris2.[0-5] | solaris2.[0-5].*) |
1114 | gl_cv_func_snprintf_truncation_c99="guessing no";; | |
9157d901 LC |
1115 | solaris*) gl_cv_func_snprintf_truncation_c99="guessing yes";; |
1116 | # Guess yes on AIX >= 4. | |
1117 | aix[1-3]*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
1118 | aix*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1119 | # Guess yes on HP-UX >= 11. | |
1120 | hpux[7-9]* | hpux10*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
1121 | hpux*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1122 | # Guess yes on IRIX >= 6.5. | |
1123 | irix6.5) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1124 | # Guess yes on OSF/1 >= 5. | |
1125 | osf[3-4]*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
1126 | osf*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1127 | # Guess yes on NetBSD >= 3. | |
1128 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
1129 | gl_cv_func_snprintf_truncation_c99="guessing no";; | |
1130 | netbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1131 | # Guess yes on BeOS. | |
1132 | beos*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
1133 | # If we don't know, assume the worst. | |
1134 | *) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
1135 | esac | |
c4b681fd | 1136 | changequote([,])dnl |
9157d901 | 1137 | ]) |
c4b681fd LC |
1138 | ]) |
1139 | ]) | |
1140 | ||
1141 | dnl Test whether the return value of the snprintf function is the number | |
1142 | dnl of bytes (excluding the terminating NUL) that would have been produced | |
1143 | dnl if the buffer had been large enough. (ISO C99, POSIX:2001) | |
1144 | dnl For example, this test program fails on IRIX 6.5: | |
1145 | dnl --------------------------------------------------------------------- | |
1146 | dnl #include <stdio.h> | |
1147 | dnl int main() | |
1148 | dnl { | |
1149 | dnl static char buf[8]; | |
1150 | dnl int retval = snprintf (buf, 3, "%d", 12345); | |
1151 | dnl return retval >= 0 && retval < 3; | |
1152 | dnl } | |
1153 | dnl --------------------------------------------------------------------- | |
1154 | dnl Result is gl_cv_func_snprintf_retval_c99. | |
1155 | ||
9157d901 | 1156 | AC_DEFUN_ONCE([gl_SNPRINTF_RETVAL_C99], |
c4b681fd LC |
1157 | [ |
1158 | AC_REQUIRE([AC_PROG_CC]) | |
1159 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
1160 | AC_CACHE_CHECK([whether snprintf returns a byte count as in C99], | |
1161 | [gl_cv_func_snprintf_retval_c99], | |
1162 | [ | |
9157d901 LC |
1163 | AC_RUN_IFELSE( |
1164 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
1165 | #include <stdio.h> |
1166 | #include <string.h> | |
1167 | static char buf[100]; | |
1168 | int main () | |
1169 | { | |
1170 | strcpy (buf, "ABCDEF"); | |
1171 | if (snprintf (buf, 3, "%d %d", 4567, 89) != 7) | |
1172 | return 1; | |
49114fd4 LC |
1173 | if (snprintf (buf, 0, "%d %d", 4567, 89) != 7) |
1174 | return 2; | |
1175 | if (snprintf (NULL, 0, "%d %d", 4567, 89) != 7) | |
1176 | return 3; | |
c4b681fd | 1177 | return 0; |
9157d901 LC |
1178 | }]])], |
1179 | [gl_cv_func_snprintf_retval_c99=yes], | |
1180 | [gl_cv_func_snprintf_retval_c99=no], | |
1181 | [ | |
c4b681fd | 1182 | changequote(,)dnl |
9157d901 LC |
1183 | case "$host_os" in |
1184 | # Guess yes on glibc systems. | |
1185 | *-gnu*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
1186 | # Guess yes on FreeBSD >= 5. | |
1187 | freebsd[1-4]*) gl_cv_func_snprintf_retval_c99="guessing no";; | |
1188 | freebsd* | kfreebsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
1189 | # Guess yes on MacOS X >= 10.3. | |
1190 | darwin[1-6].*) gl_cv_func_snprintf_retval_c99="guessing no";; | |
1191 | darwin*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
1192 | # Guess yes on OpenBSD >= 3.9. | |
1193 | openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) | |
1194 | gl_cv_func_snprintf_retval_c99="guessing no";; | |
1195 | openbsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
49114fd4 LC |
1196 | # Guess yes on Solaris >= 2.10. |
1197 | solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
1198 | solaris*) gl_cv_func_printf_sizes_c99="guessing no";; | |
9157d901 LC |
1199 | # Guess yes on AIX >= 4. |
1200 | aix[1-3]*) gl_cv_func_snprintf_retval_c99="guessing no";; | |
1201 | aix*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
1202 | # Guess yes on NetBSD >= 3. | |
1203 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
1204 | gl_cv_func_snprintf_retval_c99="guessing no";; | |
1205 | netbsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
1206 | # Guess yes on BeOS. | |
1207 | beos*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
1208 | # If we don't know, assume the worst. | |
1209 | *) gl_cv_func_snprintf_retval_c99="guessing no";; | |
1210 | esac | |
c4b681fd | 1211 | changequote([,])dnl |
9157d901 | 1212 | ]) |
c4b681fd LC |
1213 | ]) |
1214 | ]) | |
1215 | ||
1216 | dnl Test whether the snprintf function supports the %n format directive | |
1217 | dnl also in truncated portions of the format string. (ISO C99, POSIX:2001) | |
1218 | dnl Result is gl_cv_func_snprintf_directive_n. | |
1219 | ||
1220 | AC_DEFUN([gl_SNPRINTF_DIRECTIVE_N], | |
1221 | [ | |
1222 | AC_REQUIRE([AC_PROG_CC]) | |
1223 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
1224 | AC_CACHE_CHECK([whether snprintf fully supports the 'n' directive], | |
1225 | [gl_cv_func_snprintf_directive_n], | |
1226 | [ | |
9157d901 LC |
1227 | AC_RUN_IFELSE( |
1228 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
1229 | #include <stdio.h> |
1230 | #include <string.h> | |
1231 | static char fmtstring[10]; | |
1232 | static char buf[100]; | |
1233 | int main () | |
1234 | { | |
1235 | int count = -1; | |
1236 | /* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2) | |
1237 | support %n in format strings in read-only memory but not in writable | |
1238 | memory. */ | |
1239 | strcpy (fmtstring, "%d %n"); | |
1240 | snprintf (buf, 4, fmtstring, 12345, &count, 33, 44, 55); | |
1241 | if (count != 6) | |
1242 | return 1; | |
1243 | return 0; | |
9157d901 LC |
1244 | }]])], |
1245 | [gl_cv_func_snprintf_directive_n=yes], | |
1246 | [gl_cv_func_snprintf_directive_n=no], | |
1247 | [ | |
c4b681fd | 1248 | changequote(,)dnl |
9157d901 LC |
1249 | case "$host_os" in |
1250 | # Guess yes on glibc systems. | |
1251 | *-gnu*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
1252 | # Guess yes on FreeBSD >= 5. | |
1253 | freebsd[1-4]*) gl_cv_func_snprintf_directive_n="guessing no";; | |
1254 | freebsd* | kfreebsd*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
1255 | # Guess yes on MacOS X >= 10.3. | |
1256 | darwin[1-6].*) gl_cv_func_snprintf_directive_n="guessing no";; | |
1257 | darwin*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
1258 | # Guess yes on Solaris >= 2.6. | |
49114fd4 LC |
1259 | solaris2.[0-5] | solaris2.[0-5].*) |
1260 | gl_cv_func_snprintf_directive_n="guessing no";; | |
9157d901 LC |
1261 | solaris*) gl_cv_func_snprintf_directive_n="guessing yes";; |
1262 | # Guess yes on AIX >= 4. | |
1263 | aix[1-3]*) gl_cv_func_snprintf_directive_n="guessing no";; | |
1264 | aix*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
1265 | # Guess yes on IRIX >= 6.5. | |
1266 | irix6.5) gl_cv_func_snprintf_directive_n="guessing yes";; | |
1267 | # Guess yes on OSF/1 >= 5. | |
1268 | osf[3-4]*) gl_cv_func_snprintf_directive_n="guessing no";; | |
1269 | osf*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
1270 | # Guess yes on NetBSD >= 3. | |
1271 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
1272 | gl_cv_func_snprintf_directive_n="guessing no";; | |
1273 | netbsd*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
1274 | # Guess yes on BeOS. | |
1275 | beos*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
1276 | # If we don't know, assume the worst. | |
1277 | *) gl_cv_func_snprintf_directive_n="guessing no";; | |
1278 | esac | |
c4b681fd | 1279 | changequote([,])dnl |
9157d901 | 1280 | ]) |
c4b681fd LC |
1281 | ]) |
1282 | ]) | |
1283 | ||
1284 | dnl Test whether the snprintf function, when passed a size = 1, writes any | |
1285 | dnl output without bounds in this case, behaving like sprintf. This is the | |
1286 | dnl case on Linux libc5. | |
1287 | dnl Result is gl_cv_func_snprintf_size1. | |
1288 | ||
1289 | AC_DEFUN([gl_SNPRINTF_SIZE1], | |
1290 | [ | |
1291 | AC_REQUIRE([AC_PROG_CC]) | |
1292 | AC_CACHE_CHECK([whether snprintf respects a size of 1], | |
1293 | [gl_cv_func_snprintf_size1], | |
1294 | [ | |
9157d901 LC |
1295 | AC_RUN_IFELSE( |
1296 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
1297 | #include <stdio.h> |
1298 | int main() | |
1299 | { | |
1300 | static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; | |
1301 | snprintf (buf, 1, "%d", 12345); | |
1302 | return buf[1] != 'E'; | |
9157d901 LC |
1303 | }]])], |
1304 | [gl_cv_func_snprintf_size1=yes], | |
1305 | [gl_cv_func_snprintf_size1=no], | |
1306 | [gl_cv_func_snprintf_size1="guessing yes"]) | |
c4b681fd LC |
1307 | ]) |
1308 | ]) | |
1309 | ||
1310 | dnl Test whether the vsnprintf function, when passed a zero size, produces no | |
1311 | dnl output. (ISO C99, POSIX:2001) | |
1312 | dnl For example, snprintf nevertheless writes a NUL byte in this case | |
1313 | dnl on OSF/1 5.1: | |
1314 | dnl --------------------------------------------------------------------- | |
1315 | dnl #include <stdio.h> | |
1316 | dnl int main() | |
1317 | dnl { | |
1318 | dnl static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; | |
1319 | dnl snprintf (buf, 0, "%d", 12345); | |
1320 | dnl return buf[0] != 'D'; | |
1321 | dnl } | |
1322 | dnl --------------------------------------------------------------------- | |
1323 | dnl And vsnprintf writes any output without bounds in this case, behaving like | |
1324 | dnl vsprintf, on HP-UX 11 and OSF/1 5.1: | |
1325 | dnl --------------------------------------------------------------------- | |
1326 | dnl #include <stdarg.h> | |
1327 | dnl #include <stdio.h> | |
1328 | dnl static int my_snprintf (char *buf, int size, const char *format, ...) | |
1329 | dnl { | |
1330 | dnl va_list args; | |
1331 | dnl int ret; | |
1332 | dnl va_start (args, format); | |
1333 | dnl ret = vsnprintf (buf, size, format, args); | |
1334 | dnl va_end (args); | |
1335 | dnl return ret; | |
1336 | dnl } | |
1337 | dnl int main() | |
1338 | dnl { | |
1339 | dnl static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; | |
1340 | dnl my_snprintf (buf, 0, "%d", 12345); | |
1341 | dnl return buf[0] != 'D'; | |
1342 | dnl } | |
1343 | dnl --------------------------------------------------------------------- | |
1344 | dnl Result is gl_cv_func_vsnprintf_zerosize_c99. | |
1345 | ||
1346 | AC_DEFUN([gl_VSNPRINTF_ZEROSIZE_C99], | |
1347 | [ | |
1348 | AC_REQUIRE([AC_PROG_CC]) | |
1349 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
1350 | AC_CACHE_CHECK([whether vsnprintf respects a zero size as in C99], | |
1351 | [gl_cv_func_vsnprintf_zerosize_c99], | |
1352 | [ | |
9157d901 LC |
1353 | AC_RUN_IFELSE( |
1354 | [AC_LANG_SOURCE([[ | |
c4b681fd LC |
1355 | #include <stdarg.h> |
1356 | #include <stdio.h> | |
1357 | static int my_snprintf (char *buf, int size, const char *format, ...) | |
1358 | { | |
1359 | va_list args; | |
1360 | int ret; | |
1361 | va_start (args, format); | |
1362 | ret = vsnprintf (buf, size, format, args); | |
1363 | va_end (args); | |
1364 | return ret; | |
1365 | } | |
1366 | int main() | |
1367 | { | |
1368 | static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; | |
1369 | my_snprintf (buf, 0, "%d", 12345); | |
1370 | return buf[0] != 'D'; | |
9157d901 LC |
1371 | }]])], |
1372 | [gl_cv_func_vsnprintf_zerosize_c99=yes], | |
1373 | [gl_cv_func_vsnprintf_zerosize_c99=no], | |
1374 | [ | |
c4b681fd | 1375 | changequote(,)dnl |
9157d901 LC |
1376 | case "$host_os" in |
1377 | # Guess yes on glibc systems. | |
1378 | *-gnu*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1379 | # Guess yes on FreeBSD >= 5. | |
1380 | freebsd[1-4]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
1381 | freebsd* | kfreebsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1382 | # Guess yes on MacOS X >= 10.3. | |
1383 | darwin[1-6].*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
1384 | darwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1385 | # Guess yes on Cygwin. | |
1386 | cygwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1387 | # Guess yes on Solaris >= 2.6. | |
49114fd4 LC |
1388 | solaris2.[0-5] | solaris2.[0-5].*) |
1389 | gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
9157d901 LC |
1390 | solaris*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; |
1391 | # Guess yes on AIX >= 4. | |
1392 | aix[1-3]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
1393 | aix*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1394 | # Guess yes on IRIX >= 6.5. | |
1395 | irix6.5) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1396 | # Guess yes on NetBSD >= 3. | |
1397 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
1398 | gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
1399 | netbsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1400 | # Guess yes on BeOS. | |
1401 | beos*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1402 | # Guess yes on mingw. | |
1403 | mingw* | pw*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
1404 | # If we don't know, assume the worst. | |
1405 | *) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
1406 | esac | |
c4b681fd | 1407 | changequote([,])dnl |
9157d901 | 1408 | ]) |
c4b681fd LC |
1409 | ]) |
1410 | ]) | |
1411 | ||
1412 | dnl The results of these tests on various platforms are: | |
1413 | dnl | |
1414 | dnl 1 = gl_PRINTF_SIZES_C99 | |
1415 | dnl 2 = gl_PRINTF_LONG_DOUBLE | |
1416 | dnl 3 = gl_PRINTF_INFINITE | |
1417 | dnl 4 = gl_PRINTF_INFINITE_LONG_DOUBLE | |
1418 | dnl 5 = gl_PRINTF_DIRECTIVE_A | |
1419 | dnl 6 = gl_PRINTF_DIRECTIVE_F | |
1420 | dnl 7 = gl_PRINTF_DIRECTIVE_N | |
1421 | dnl 8 = gl_PRINTF_DIRECTIVE_LS | |
1422 | dnl 9 = gl_PRINTF_POSITIONS | |
1423 | dnl 10 = gl_PRINTF_FLAG_GROUPING | |
1424 | dnl 11 = gl_PRINTF_FLAG_LEFTADJUST | |
1425 | dnl 12 = gl_PRINTF_FLAG_ZERO | |
1426 | dnl 13 = gl_PRINTF_PRECISION | |
1427 | dnl 14 = gl_PRINTF_ENOMEM | |
1428 | dnl 15 = gl_SNPRINTF_PRESENCE | |
1429 | dnl 16 = gl_SNPRINTF_TRUNCATION_C99 | |
1430 | dnl 17 = gl_SNPRINTF_RETVAL_C99 | |
1431 | dnl 18 = gl_SNPRINTF_DIRECTIVE_N | |
1432 | dnl 19 = gl_SNPRINTF_SIZE1 | |
1433 | dnl 20 = gl_VSNPRINTF_ZEROSIZE_C99 | |
1434 | dnl | |
1435 | dnl 1 = checking whether printf supports size specifiers as in C99... | |
1436 | dnl 2 = checking whether printf supports 'long double' arguments... | |
1437 | dnl 3 = checking whether printf supports infinite 'double' arguments... | |
1438 | dnl 4 = checking whether printf supports infinite 'long double' arguments... | |
1439 | dnl 5 = checking whether printf supports the 'a' and 'A' directives... | |
1440 | dnl 6 = checking whether printf supports the 'F' directive... | |
1441 | dnl 7 = checking whether printf supports the 'n' directive... | |
1442 | dnl 8 = checking whether printf supports the 'ls' directive... | |
1443 | dnl 9 = checking whether printf supports POSIX/XSI format strings with positions... | |
1444 | dnl 10 = checking whether printf supports the grouping flag... | |
1445 | dnl 11 = checking whether printf supports the left-adjust flag correctly... | |
1446 | dnl 12 = checking whether printf supports the zero flag correctly... | |
1447 | dnl 13 = checking whether printf supports large precisions... | |
1448 | dnl 14 = checking whether printf survives out-of-memory conditions... | |
1449 | dnl 15 = checking for snprintf... | |
1450 | dnl 16 = checking whether snprintf truncates the result as in C99... | |
1451 | dnl 17 = checking whether snprintf returns a byte count as in C99... | |
1452 | dnl 18 = checking whether snprintf fully supports the 'n' directive... | |
1453 | dnl 19 = checking whether snprintf respects a size of 1... | |
1454 | dnl 20 = checking whether vsnprintf respects a zero size as in C99... | |
1455 | dnl | |
1456 | dnl . = yes, # = no. | |
1457 | dnl | |
1458 | dnl 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | |
1459 | dnl glibc 2.5 . . . . . . . . . . . . . . . . . . . . | |
1460 | dnl glibc 2.3.6 . . . . # . . . . . . . . . . . . . . . | |
1461 | dnl FreeBSD 5.4, 6.1 . . . . # . . . . . . # . # . . . . . . | |
0f00f2c3 | 1462 | dnl MacOS X 10.5.8 . . . # # . . . . . . # . . . . . . . . |
c4b681fd LC |
1463 | dnl MacOS X 10.3.9 . . . . # . . . . . . # . # . . . . . . |
1464 | dnl OpenBSD 3.9, 4.0 . . # # # # . # . # . # . # . . . . . . | |
1465 | dnl Cygwin 1.7.0 (2009) . . . # . . . ? . . . . . ? . . . . . . | |
1466 | dnl Cygwin 1.5.25 (2008) . . . # # . . # . . . . . # . . . . . . | |
1467 | dnl Cygwin 1.5.19 (2006) # . . # # # . # . # . # # # . . . . . . | |
0f00f2c3 LC |
1468 | dnl Solaris 11 2010-11 . . # # # . . # . . . # . . . . . . . . |
1469 | dnl Solaris 10 . . # # # . . # . . . # # . . . . . . . | |
49114fd4 | 1470 | dnl Solaris 2.6 ... 9 # . # # # # . # . . . # # . . . # . . . |
c4b681fd | 1471 | dnl Solaris 2.5.1 # . # # # # . # . . . # . . # # # # # # |
231c0e0e LC |
1472 | dnl AIX 7.1 . . # # # . . . . . . # # . . . . . . . |
1473 | dnl AIX 5.2 . . # # # . . . . . . # . . . . . . . . | |
49114fd4 | 1474 | dnl AIX 4.3.2, 5.1 # . # # # # . . . . . # . . . . # . . . |
c4b681fd LC |
1475 | dnl HP-UX 11.31 . . . . # . . . . . . # . . . . # # . . |
1476 | dnl HP-UX 11.{00,11,23} # . . . # # . . . . . # . . . . # # . # | |
1477 | dnl HP-UX 10.20 # . # . # # . ? . . # # . . . . # # ? # | |
1478 | dnl IRIX 6.5 # . # # # # . # . . . # . . . . # . . . | |
1479 | dnl OSF/1 5.1 # . # # # # . . . . . # . . . . # . . # | |
1480 | dnl OSF/1 4.0d # . # # # # . . . . . # . . # # # # # # | |
0f00f2c3 | 1481 | dnl NetBSD 5.0 . . . # # . . . . . . # . # . . . . . . |
c4b681fd LC |
1482 | dnl NetBSD 4.0 . ? ? ? ? ? . ? . ? ? ? ? ? . . . ? ? ? |
1483 | dnl NetBSD 3.0 . . . . # # . ? # # ? # . # . . . . . . | |
49114fd4 LC |
1484 | dnl Haiku . . . # # # . # . . . . . ? . . ? . . . |
1485 | dnl BeOS # # . # # # . ? # . ? . # ? . . ? . . . | |
c4b681fd | 1486 | dnl mingw # # # # # # . . # # . # # ? . # # # . . |