HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| c4b681fd | 1 | # printf.m4 serial 33 |
| 61cd9dc9 | 2 | dnl Copyright (C) 2003, 2007-2010 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 | [ | |
| 20 | AC_TRY_RUN([ | |
| 21 | #include <stddef.h> | |
| 22 | #include <stdio.h> | |
| 23 | #include <string.h> | |
| 24 | #include <sys/types.h> | |
| 25 | #if HAVE_STDINT_H_WITH_UINTMAX | |
| 26 | # include <stdint.h> | |
| 27 | #endif | |
| 28 | #if HAVE_INTTYPES_H_WITH_UINTMAX | |
| 29 | # include <inttypes.h> | |
| 30 | #endif | |
| 31 | static char buf[100]; | |
| 32 | int main () | |
| 33 | { | |
| 34 | #if HAVE_STDINT_H_WITH_UINTMAX || HAVE_INTTYPES_H_WITH_UINTMAX | |
| 35 | buf[0] = '\0'; | |
| 36 | if (sprintf (buf, "%ju %d", (uintmax_t) 12345671, 33, 44, 55) < 0 | |
| 37 | || strcmp (buf, "12345671 33") != 0) | |
| 38 | return 1; | |
| 39 | #endif | |
| 40 | buf[0] = '\0'; | |
| 41 | if (sprintf (buf, "%zu %d", (size_t) 12345672, 33, 44, 55) < 0 | |
| 42 | || strcmp (buf, "12345672 33") != 0) | |
| 43 | return 1; | |
| 44 | buf[0] = '\0'; | |
| 45 | if (sprintf (buf, "%tu %d", (ptrdiff_t) 12345673, 33, 44, 55) < 0 | |
| 46 | || strcmp (buf, "12345673 33") != 0) | |
| 47 | return 1; | |
| 48 | buf[0] = '\0'; | |
| 49 | if (sprintf (buf, "%Lg %d", (long double) 1.5, 33, 44, 55) < 0 | |
| 50 | || strcmp (buf, "1.5 33") != 0) | |
| 51 | return 1; | |
| 52 | return 0; | |
| 53 | }], [gl_cv_func_printf_sizes_c99=yes], [gl_cv_func_printf_sizes_c99=no], | |
| 54 | [ | |
| 55 | changequote(,)dnl | |
| 56 | case "$host_os" in | |
| 57 | # Guess yes on glibc systems. | |
| 58 | *-gnu*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
| 59 | # Guess yes on FreeBSD >= 5. | |
| 60 | freebsd[1-4]*) gl_cv_func_printf_sizes_c99="guessing no";; | |
| 61 | freebsd* | kfreebsd*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
| 62 | # Guess yes on MacOS X >= 10.3. | |
| 63 | darwin[1-6].*) gl_cv_func_printf_sizes_c99="guessing no";; | |
| 64 | darwin*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
| 65 | # Guess yes on OpenBSD >= 3.9. | |
| 66 | openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) | |
| 67 | gl_cv_func_printf_sizes_c99="guessing no";; | |
| 68 | openbsd*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
| 69 | # Guess yes on Solaris >= 2.10. | |
| 70 | solaris2.[0-9]*) gl_cv_func_printf_sizes_c99="guessing no";; | |
| 71 | solaris*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
| 72 | # Guess yes on NetBSD >= 3. | |
| 73 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
| 74 | gl_cv_func_printf_sizes_c99="guessing no";; | |
| 75 | netbsd*) gl_cv_func_printf_sizes_c99="guessing yes";; | |
| 76 | # If we don't know, assume the worst. | |
| 77 | *) gl_cv_func_printf_sizes_c99="guessing no";; | |
| 78 | esac | |
| 79 | changequote([,])dnl | |
| 80 | ]) | |
| 81 | ]) | |
| 82 | ]) | |
| 83 | ||
| 84 | dnl Test whether the *printf family of functions supports 'long double' | |
| 85 | dnl arguments together with the 'L' size specifier. (ISO C99, POSIX:2001) | |
| 86 | dnl Result is gl_cv_func_printf_long_double. | |
| 87 | ||
| 88 | AC_DEFUN([gl_PRINTF_LONG_DOUBLE], | |
| 89 | [ | |
| 90 | AC_REQUIRE([AC_PROG_CC]) | |
| 91 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 92 | AC_CACHE_CHECK([whether printf supports 'long double' arguments], | |
| 93 | [gl_cv_func_printf_long_double], | |
| 94 | [ | |
| 95 | AC_TRY_RUN([ | |
| 96 | #include <stdio.h> | |
| 97 | #include <string.h> | |
| 98 | static char buf[10000]; | |
| 99 | int main () | |
| 100 | { | |
| 101 | buf[0] = '\0'; | |
| 102 | if (sprintf (buf, "%Lf %d", 1.75L, 33, 44, 55) < 0 | |
| 103 | || strcmp (buf, "1.750000 33") != 0) | |
| 104 | return 1; | |
| 105 | buf[0] = '\0'; | |
| 106 | if (sprintf (buf, "%Le %d", 1.75L, 33, 44, 55) < 0 | |
| 107 | || strcmp (buf, "1.750000e+00 33") != 0) | |
| 108 | return 1; | |
| 109 | buf[0] = '\0'; | |
| 110 | if (sprintf (buf, "%Lg %d", 1.75L, 33, 44, 55) < 0 | |
| 111 | || strcmp (buf, "1.75 33") != 0) | |
| 112 | return 1; | |
| 113 | return 0; | |
| 114 | }], [gl_cv_func_printf_long_double=yes], [gl_cv_func_printf_long_double=no], | |
| 115 | [ | |
| 116 | changequote(,)dnl | |
| 117 | case "$host_os" in | |
| 118 | beos*) gl_cv_func_printf_long_double="guessing no";; | |
| 119 | mingw* | pw*) gl_cv_func_printf_long_double="guessing no";; | |
| 120 | *) gl_cv_func_printf_long_double="guessing yes";; | |
| 121 | esac | |
| 122 | changequote([,])dnl | |
| 123 | ]) | |
| 124 | ]) | |
| 125 | ]) | |
| 126 | ||
| 127 | dnl Test whether the *printf family of functions supports infinite and NaN | |
| 128 | dnl 'double' arguments and negative zero arguments in the %f, %e, %g | |
| 129 | dnl directives. (ISO C99, POSIX:2001) | |
| 130 | dnl Result is gl_cv_func_printf_infinite. | |
| 131 | ||
| 132 | AC_DEFUN([gl_PRINTF_INFINITE], | |
| 133 | [ | |
| 134 | AC_REQUIRE([AC_PROG_CC]) | |
| 135 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 136 | AC_CACHE_CHECK([whether printf supports infinite 'double' arguments], | |
| 137 | [gl_cv_func_printf_infinite], | |
| 138 | [ | |
| 139 | AC_TRY_RUN([ | |
| 140 | #include <stdio.h> | |
| 141 | #include <string.h> | |
| 142 | static int | |
| 143 | strisnan (const char *string, size_t start_index, size_t end_index) | |
| 144 | { | |
| 145 | if (start_index < end_index) | |
| 146 | { | |
| 147 | if (string[start_index] == '-') | |
| 148 | start_index++; | |
| 149 | if (start_index + 3 <= end_index | |
| 150 | && memcmp (string + start_index, "nan", 3) == 0) | |
| 151 | { | |
| 152 | start_index += 3; | |
| 153 | if (start_index == end_index | |
| 154 | || (string[start_index] == '(' && string[end_index - 1] == ')')) | |
| 155 | return 1; | |
| 156 | } | |
| 157 | } | |
| 158 | return 0; | |
| 159 | } | |
| 160 | static int | |
| 161 | have_minus_zero () | |
| 162 | { | |
| 163 | static double plus_zero = 0.0; | |
| 164 | double minus_zero = - plus_zero; | |
| 165 | return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0; | |
| 166 | } | |
| 167 | static char buf[10000]; | |
| 168 | static double zero = 0.0; | |
| 169 | int main () | |
| 170 | { | |
| 171 | if (sprintf (buf, "%f", 1.0 / 0.0) < 0 | |
| 172 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
| 173 | return 1; | |
| 174 | if (sprintf (buf, "%f", -1.0 / 0.0) < 0 | |
| 175 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
| 176 | return 1; | |
| 177 | if (sprintf (buf, "%f", zero / zero) < 0 | |
| 178 | || !strisnan (buf, 0, strlen (buf))) | |
| 179 | return 1; | |
| 180 | if (sprintf (buf, "%e", 1.0 / 0.0) < 0 | |
| 181 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
| 182 | return 1; | |
| 183 | if (sprintf (buf, "%e", -1.0 / 0.0) < 0 | |
| 184 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
| 185 | return 1; | |
| 186 | if (sprintf (buf, "%e", zero / zero) < 0 | |
| 187 | || !strisnan (buf, 0, strlen (buf))) | |
| 188 | return 1; | |
| 189 | if (sprintf (buf, "%g", 1.0 / 0.0) < 0 | |
| 190 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
| 191 | return 1; | |
| 192 | if (sprintf (buf, "%g", -1.0 / 0.0) < 0 | |
| 193 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
| 194 | return 1; | |
| 195 | if (sprintf (buf, "%g", zero / zero) < 0 | |
| 196 | || !strisnan (buf, 0, strlen (buf))) | |
| 197 | return 1; | |
| 198 | /* This test fails on HP-UX 10.20. */ | |
| 199 | if (have_minus_zero ()) | |
| 200 | if (sprintf (buf, "%g", - zero) < 0 | |
| 201 | || strcmp (buf, "-0") != 0) | |
| 202 | return 1; | |
| 203 | return 0; | |
| 204 | }], [gl_cv_func_printf_infinite=yes], [gl_cv_func_printf_infinite=no], | |
| 205 | [ | |
| 206 | changequote(,)dnl | |
| 207 | case "$host_os" in | |
| 208 | # Guess yes on glibc systems. | |
| 209 | *-gnu*) gl_cv_func_printf_infinite="guessing yes";; | |
| 210 | # Guess yes on FreeBSD >= 6. | |
| 211 | freebsd[1-5]*) gl_cv_func_printf_infinite="guessing no";; | |
| 212 | freebsd* | kfreebsd*) gl_cv_func_printf_infinite="guessing yes";; | |
| 213 | # Guess yes on MacOS X >= 10.3. | |
| 214 | darwin[1-6].*) gl_cv_func_printf_infinite="guessing no";; | |
| 215 | darwin*) gl_cv_func_printf_infinite="guessing yes";; | |
| 216 | # Guess yes on HP-UX >= 11. | |
| 217 | hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite="guessing no";; | |
| 218 | hpux*) gl_cv_func_printf_infinite="guessing yes";; | |
| 219 | # Guess yes on NetBSD >= 3. | |
| 220 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
| 221 | gl_cv_func_printf_infinite="guessing no";; | |
| 222 | netbsd*) gl_cv_func_printf_infinite="guessing yes";; | |
| 223 | # Guess yes on BeOS. | |
| 224 | beos*) gl_cv_func_printf_infinite="guessing yes";; | |
| 225 | # If we don't know, assume the worst. | |
| 226 | *) gl_cv_func_printf_infinite="guessing no";; | |
| 227 | esac | |
| 228 | changequote([,])dnl | |
| 229 | ]) | |
| 230 | ]) | |
| 231 | ]) | |
| 232 | ||
| 233 | dnl Test whether the *printf family of functions supports infinite and NaN | |
| 234 | dnl 'long double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001) | |
| 235 | dnl Result is gl_cv_func_printf_infinite_long_double. | |
| 236 | ||
| 237 | AC_DEFUN([gl_PRINTF_INFINITE_LONG_DOUBLE], | |
| 238 | [ | |
| 239 | AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) | |
| 240 | AC_REQUIRE([AC_PROG_CC]) | |
| 241 | AC_REQUIRE([gl_BIGENDIAN]) | |
| 242 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 243 | dnl The user can set or unset the variable gl_printf_safe to indicate | |
| 244 | dnl that he wishes a safe handling of non-IEEE-754 'long double' values. | |
| 245 | if test -n "$gl_printf_safe"; then | |
| 246 | AC_DEFINE([CHECK_PRINTF_SAFE], [1], | |
| 247 | [Define if you wish *printf() functions that have a safe handling of | |
| 248 | non-IEEE-754 'long double' values.]) | |
| 249 | fi | |
| 250 | case "$gl_cv_func_printf_long_double" in | |
| 251 | *yes) | |
| 252 | AC_CACHE_CHECK([whether printf supports infinite 'long double' arguments], | |
| 253 | [gl_cv_func_printf_infinite_long_double], | |
| 254 | [ | |
| 255 | AC_TRY_RUN([ | |
| 256 | ]GL_NOCRASH[ | |
| 257 | #include <float.h> | |
| 258 | #include <stdio.h> | |
| 259 | #include <string.h> | |
| 260 | static int | |
| 261 | strisnan (const char *string, size_t start_index, size_t end_index) | |
| 262 | { | |
| 263 | if (start_index < end_index) | |
| 264 | { | |
| 265 | if (string[start_index] == '-') | |
| 266 | start_index++; | |
| 267 | if (start_index + 3 <= end_index | |
| 268 | && memcmp (string + start_index, "nan", 3) == 0) | |
| 269 | { | |
| 270 | start_index += 3; | |
| 271 | if (start_index == end_index | |
| 272 | || (string[start_index] == '(' && string[end_index - 1] == ')')) | |
| 273 | return 1; | |
| 274 | } | |
| 275 | } | |
| 276 | return 0; | |
| 277 | } | |
| 278 | static char buf[10000]; | |
| 279 | static long double zeroL = 0.0L; | |
| 280 | int main () | |
| 281 | { | |
| 282 | nocrash_init(); | |
| 283 | if (sprintf (buf, "%Lf", 1.0L / 0.0L) < 0 | |
| 284 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
| 285 | return 1; | |
| 286 | if (sprintf (buf, "%Lf", -1.0L / 0.0L) < 0 | |
| 287 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
| 288 | return 1; | |
| 289 | if (sprintf (buf, "%Lf", zeroL / zeroL) < 0 | |
| 290 | || !strisnan (buf, 0, strlen (buf))) | |
| 291 | return 1; | |
| 292 | if (sprintf (buf, "%Le", 1.0L / 0.0L) < 0 | |
| 293 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
| 294 | return 1; | |
| 295 | if (sprintf (buf, "%Le", -1.0L / 0.0L) < 0 | |
| 296 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
| 297 | return 1; | |
| 298 | if (sprintf (buf, "%Le", zeroL / zeroL) < 0 | |
| 299 | || !strisnan (buf, 0, strlen (buf))) | |
| 300 | return 1; | |
| 301 | if (sprintf (buf, "%Lg", 1.0L / 0.0L) < 0 | |
| 302 | || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) | |
| 303 | return 1; | |
| 304 | if (sprintf (buf, "%Lg", -1.0L / 0.0L) < 0 | |
| 305 | || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) | |
| 306 | return 1; | |
| 307 | if (sprintf (buf, "%Lg", zeroL / zeroL) < 0 | |
| 308 | || !strisnan (buf, 0, strlen (buf))) | |
| 309 | return 1; | |
| 310 | #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_)) | |
| 311 | /* Representation of an 80-bit 'long double' as an initializer for a sequence | |
| 312 | of 'unsigned int' words. */ | |
| 313 | # ifdef WORDS_BIGENDIAN | |
| 314 | # define LDBL80_WORDS(exponent,manthi,mantlo) \ | |
| 315 | { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \ | |
| 316 | ((unsigned int) (manthi) << 16) | (unsigned int) (mantlo) >> 16), \ | |
| 317 | (unsigned int) (mantlo) << 16 \ | |
| 318 | } | |
| 319 | # else | |
| 320 | # define LDBL80_WORDS(exponent,manthi,mantlo) \ | |
| 321 | { mantlo, manthi, exponent } | |
| 322 | # endif | |
| 323 | { /* Quiet NaN. */ | |
| 324 | static union { unsigned int word[4]; long double value; } x = | |
| 325 | { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; | |
| 326 | if (sprintf (buf, "%Lf", x.value) < 0 | |
| 327 | || !strisnan (buf, 0, strlen (buf))) | |
| 328 | return 1; | |
| 329 | if (sprintf (buf, "%Le", x.value) < 0 | |
| 330 | || !strisnan (buf, 0, strlen (buf))) | |
| 331 | return 1; | |
| 332 | if (sprintf (buf, "%Lg", x.value) < 0 | |
| 333 | || !strisnan (buf, 0, strlen (buf))) | |
| 334 | return 1; | |
| 335 | } | |
| 336 | { | |
| 337 | /* Signalling NaN. */ | |
| 338 | static union { unsigned int word[4]; long double value; } x = | |
| 339 | { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; | |
| 340 | if (sprintf (buf, "%Lf", x.value) < 0 | |
| 341 | || !strisnan (buf, 0, strlen (buf))) | |
| 342 | return 1; | |
| 343 | if (sprintf (buf, "%Le", x.value) < 0 | |
| 344 | || !strisnan (buf, 0, strlen (buf))) | |
| 345 | return 1; | |
| 346 | if (sprintf (buf, "%Lg", x.value) < 0 | |
| 347 | || !strisnan (buf, 0, strlen (buf))) | |
| 348 | return 1; | |
| 349 | } | |
| 350 | { /* Pseudo-NaN. */ | |
| 351 | static union { unsigned int word[4]; long double value; } x = | |
| 352 | { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; | |
| 353 | if (sprintf (buf, "%Lf", x.value) < 0 | |
| 354 | || !strisnan (buf, 0, strlen (buf))) | |
| 355 | return 1; | |
| 356 | if (sprintf (buf, "%Le", x.value) < 0 | |
| 357 | || !strisnan (buf, 0, strlen (buf))) | |
| 358 | return 1; | |
| 359 | if (sprintf (buf, "%Lg", x.value) < 0 | |
| 360 | || !strisnan (buf, 0, strlen (buf))) | |
| 361 | return 1; | |
| 362 | } | |
| 363 | { /* Pseudo-Infinity. */ | |
| 364 | static union { unsigned int word[4]; long double value; } x = | |
| 365 | { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; | |
| 366 | if (sprintf (buf, "%Lf", x.value) < 0 | |
| 367 | || !strisnan (buf, 0, strlen (buf))) | |
| 368 | return 1; | |
| 369 | if (sprintf (buf, "%Le", x.value) < 0 | |
| 370 | || !strisnan (buf, 0, strlen (buf))) | |
| 371 | return 1; | |
| 372 | if (sprintf (buf, "%Lg", x.value) < 0 | |
| 373 | || !strisnan (buf, 0, strlen (buf))) | |
| 374 | return 1; | |
| 375 | } | |
| 376 | { /* Pseudo-Zero. */ | |
| 377 | static union { unsigned int word[4]; long double value; } x = | |
| 378 | { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; | |
| 379 | if (sprintf (buf, "%Lf", x.value) < 0 | |
| 380 | || !strisnan (buf, 0, strlen (buf))) | |
| 381 | return 1; | |
| 382 | if (sprintf (buf, "%Le", x.value) < 0 | |
| 383 | || !strisnan (buf, 0, strlen (buf))) | |
| 384 | return 1; | |
| 385 | if (sprintf (buf, "%Lg", x.value) < 0 | |
| 386 | || !strisnan (buf, 0, strlen (buf))) | |
| 387 | return 1; | |
| 388 | } | |
| 389 | { /* Unnormalized number. */ | |
| 390 | static union { unsigned int word[4]; long double value; } x = | |
| 391 | { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; | |
| 392 | if (sprintf (buf, "%Lf", x.value) < 0 | |
| 393 | || !strisnan (buf, 0, strlen (buf))) | |
| 394 | return 1; | |
| 395 | if (sprintf (buf, "%Le", x.value) < 0 | |
| 396 | || !strisnan (buf, 0, strlen (buf))) | |
| 397 | return 1; | |
| 398 | if (sprintf (buf, "%Lg", x.value) < 0 | |
| 399 | || !strisnan (buf, 0, strlen (buf))) | |
| 400 | return 1; | |
| 401 | } | |
| 402 | { /* Pseudo-Denormal. */ | |
| 403 | static union { unsigned int word[4]; long double value; } x = | |
| 404 | { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; | |
| 405 | if (sprintf (buf, "%Lf", x.value) < 0 | |
| 406 | || !strisnan (buf, 0, strlen (buf))) | |
| 407 | return 1; | |
| 408 | if (sprintf (buf, "%Le", x.value) < 0 | |
| 409 | || !strisnan (buf, 0, strlen (buf))) | |
| 410 | return 1; | |
| 411 | if (sprintf (buf, "%Lg", x.value) < 0 | |
| 412 | || !strisnan (buf, 0, strlen (buf))) | |
| 413 | return 1; | |
| 414 | } | |
| 415 | #endif | |
| 416 | return 0; | |
| 417 | }], | |
| 418 | [gl_cv_func_printf_infinite_long_double=yes], | |
| 419 | [gl_cv_func_printf_infinite_long_double=no], | |
| 420 | [ | |
| 421 | changequote(,)dnl | |
| 422 | case "$host_cpu" in | |
| 423 | # Guess no on ia64, x86_64, i386. | |
| 424 | ia64 | x86_64 | i*86) gl_cv_func_printf_infinite_long_double="guessing no";; | |
| 425 | *) | |
| 426 | case "$host_os" in | |
| 427 | # Guess yes on glibc systems. | |
| 428 | *-gnu*) gl_cv_func_printf_infinite_long_double="guessing yes";; | |
| 429 | # Guess yes on FreeBSD >= 6. | |
| 430 | freebsd[1-5]*) gl_cv_func_printf_infinite_long_double="guessing no";; | |
| 431 | freebsd* | kfreebsd*) gl_cv_func_printf_infinite_long_double="guessing yes";; | |
| 432 | # Guess yes on MacOS X >= 10.3. | |
| 433 | darwin[1-6].*) gl_cv_func_printf_infinite_long_double="guessing no";; | |
| 434 | darwin*) gl_cv_func_printf_infinite_long_double="guessing yes";; | |
| 435 | # Guess yes on HP-UX >= 11. | |
| 436 | hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite_long_double="guessing no";; | |
| 437 | hpux*) gl_cv_func_printf_infinite_long_double="guessing yes";; | |
| 438 | # Guess yes on NetBSD >= 3. | |
| 439 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
| 440 | gl_cv_func_printf_infinite_long_double="guessing no";; | |
| 441 | netbsd*) gl_cv_func_printf_infinite_long_double="guessing yes";; | |
| 442 | # If we don't know, assume the worst. | |
| 443 | *) gl_cv_func_printf_infinite_long_double="guessing no";; | |
| 444 | esac | |
| 445 | ;; | |
| 446 | esac | |
| 447 | changequote([,])dnl | |
| 448 | ]) | |
| 449 | ]) | |
| 450 | ;; | |
| 451 | *) | |
| 452 | gl_cv_func_printf_infinite_long_double="irrelevant" | |
| 453 | ;; | |
| 454 | esac | |
| 455 | ]) | |
| 456 | ||
| 457 | dnl Test whether the *printf family of functions supports the 'a' and 'A' | |
| 458 | dnl conversion specifier for hexadecimal output of floating-point numbers. | |
| 459 | dnl (ISO C99, POSIX:2001) | |
| 460 | dnl Result is gl_cv_func_printf_directive_a. | |
| 461 | ||
| 462 | AC_DEFUN([gl_PRINTF_DIRECTIVE_A], | |
| 463 | [ | |
| 464 | AC_REQUIRE([AC_PROG_CC]) | |
| 465 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 466 | AC_CACHE_CHECK([whether printf supports the 'a' and 'A' directives], | |
| 467 | [gl_cv_func_printf_directive_a], | |
| 468 | [ | |
| 469 | AC_TRY_RUN([ | |
| 470 | #include <stdio.h> | |
| 471 | #include <string.h> | |
| 472 | static char buf[100]; | |
| 473 | int main () | |
| 474 | { | |
| 475 | if (sprintf (buf, "%a %d", 3.1416015625, 33, 44, 55) < 0 | |
| 476 | || (strcmp (buf, "0x1.922p+1 33") != 0 | |
| 477 | && strcmp (buf, "0x3.244p+0 33") != 0 | |
| 478 | && strcmp (buf, "0x6.488p-1 33") != 0 | |
| 479 | && strcmp (buf, "0xc.91p-2 33") != 0)) | |
| 480 | return 1; | |
| 481 | if (sprintf (buf, "%A %d", -3.1416015625, 33, 44, 55) < 0 | |
| 482 | || (strcmp (buf, "-0X1.922P+1 33") != 0 | |
| 483 | && strcmp (buf, "-0X3.244P+0 33") != 0 | |
| 484 | && strcmp (buf, "-0X6.488P-1 33") != 0 | |
| 485 | && strcmp (buf, "-0XC.91P-2 33") != 0)) | |
| 486 | return 1; | |
| 487 | /* This catches a FreeBSD 6.1 bug: it doesn't round. */ | |
| 488 | if (sprintf (buf, "%.2a %d", 1.51, 33, 44, 55) < 0 | |
| 489 | || (strcmp (buf, "0x1.83p+0 33") != 0 | |
| 490 | && strcmp (buf, "0x3.05p-1 33") != 0 | |
| 491 | && strcmp (buf, "0x6.0ap-2 33") != 0 | |
| 492 | && strcmp (buf, "0xc.14p-3 33") != 0)) | |
| 493 | return 1; | |
| 494 | /* This catches a FreeBSD 6.1 bug. See | |
| 495 | <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */ | |
| 496 | if (sprintf (buf, "%010a %d", 1.0 / 0.0, 33, 44, 55) < 0 | |
| 497 | || buf[0] == '0') | |
| 498 | return 1; | |
| 499 | /* This catches a MacOS X 10.3.9 (Darwin 7.9) bug. */ | |
| 500 | if (sprintf (buf, "%.1a", 1.999) < 0 | |
| 501 | || (strcmp (buf, "0x1.0p+1") != 0 | |
| 502 | && strcmp (buf, "0x2.0p+0") != 0 | |
| 503 | && strcmp (buf, "0x4.0p-1") != 0 | |
| 504 | && strcmp (buf, "0x8.0p-2") != 0)) | |
| 505 | return 1; | |
| 506 | /* This catches the same MacOS X 10.3.9 (Darwin 7.9) bug and also a | |
| 507 | glibc 2.4 bug <http://sourceware.org/bugzilla/show_bug.cgi?id=2908>. */ | |
| 508 | if (sprintf (buf, "%.1La", 1.999L) < 0 | |
| 509 | || (strcmp (buf, "0x1.0p+1") != 0 | |
| 510 | && strcmp (buf, "0x2.0p+0") != 0 | |
| 511 | && strcmp (buf, "0x4.0p-1") != 0 | |
| 512 | && strcmp (buf, "0x8.0p-2") != 0)) | |
| 513 | return 1; | |
| 514 | return 0; | |
| 515 | }], [gl_cv_func_printf_directive_a=yes], [gl_cv_func_printf_directive_a=no], | |
| 516 | [ | |
| 517 | case "$host_os" in | |
| 518 | # Guess yes on glibc >= 2.5 systems. | |
| 519 | *-gnu*) | |
| 520 | AC_EGREP_CPP([BZ2908], [ | |
| 521 | #include <features.h> | |
| 522 | #ifdef __GNU_LIBRARY__ | |
| 523 | #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 5) || (__GLIBC__ > 2) | |
| 524 | BZ2908 | |
| 525 | #endif | |
| 526 | #endif | |
| 527 | ], | |
| 528 | [gl_cv_func_printf_directive_a="guessing yes"], | |
| 529 | [gl_cv_func_printf_directive_a="guessing no"]) | |
| 530 | ;; | |
| 531 | # If we don't know, assume the worst. | |
| 532 | *) gl_cv_func_printf_directive_a="guessing no";; | |
| 533 | esac | |
| 534 | ]) | |
| 535 | ]) | |
| 536 | ]) | |
| 537 | ||
| 538 | dnl Test whether the *printf family of functions supports the %F format | |
| 539 | dnl directive. (ISO C99, POSIX:2001) | |
| 540 | dnl Result is gl_cv_func_printf_directive_f. | |
| 541 | ||
| 542 | AC_DEFUN([gl_PRINTF_DIRECTIVE_F], | |
| 543 | [ | |
| 544 | AC_REQUIRE([AC_PROG_CC]) | |
| 545 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 546 | AC_CACHE_CHECK([whether printf supports the 'F' directive], | |
| 547 | [gl_cv_func_printf_directive_f], | |
| 548 | [ | |
| 549 | AC_TRY_RUN([ | |
| 550 | #include <stdio.h> | |
| 551 | #include <string.h> | |
| 552 | static char buf[100]; | |
| 553 | int main () | |
| 554 | { | |
| 555 | if (sprintf (buf, "%F %d", 1234567.0, 33, 44, 55) < 0 | |
| 556 | || strcmp (buf, "1234567.000000 33") != 0) | |
| 557 | return 1; | |
| 558 | if (sprintf (buf, "%F", 1.0 / 0.0) < 0 | |
| 559 | || (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0)) | |
| 560 | return 1; | |
| 561 | /* This catches a Cygwin 1.5.x bug. */ | |
| 562 | if (sprintf (buf, "%.F", 1234.0) < 0 | |
| 563 | || strcmp (buf, "1234") != 0) | |
| 564 | return 1; | |
| 565 | return 0; | |
| 566 | }], [gl_cv_func_printf_directive_f=yes], [gl_cv_func_printf_directive_f=no], | |
| 567 | [ | |
| 568 | changequote(,)dnl | |
| 569 | case "$host_os" in | |
| 570 | # Guess yes on glibc systems. | |
| 571 | *-gnu*) gl_cv_func_printf_directive_f="guessing yes";; | |
| 572 | # Guess yes on FreeBSD >= 6. | |
| 573 | freebsd[1-5]*) gl_cv_func_printf_directive_f="guessing no";; | |
| 574 | freebsd* | kfreebsd*) gl_cv_func_printf_directive_f="guessing yes";; | |
| 575 | # Guess yes on MacOS X >= 10.3. | |
| 576 | darwin[1-6].*) gl_cv_func_printf_directive_f="guessing no";; | |
| 577 | darwin*) gl_cv_func_printf_directive_f="guessing yes";; | |
| 578 | # Guess yes on Solaris >= 2.10. | |
| 579 | solaris2.[0-9]*) gl_cv_func_printf_directive_f="guessing no";; | |
| 580 | solaris*) gl_cv_func_printf_directive_f="guessing yes";; | |
| 581 | # If we don't know, assume the worst. | |
| 582 | *) gl_cv_func_printf_directive_f="guessing no";; | |
| 583 | esac | |
| 584 | changequote([,])dnl | |
| 585 | ]) | |
| 586 | ]) | |
| 587 | ]) | |
| 588 | ||
| 589 | dnl Test whether the *printf family of functions supports the %n format | |
| 590 | dnl directive. (ISO C99, POSIX:2001) | |
| 591 | dnl Result is gl_cv_func_printf_directive_n. | |
| 592 | ||
| 593 | AC_DEFUN([gl_PRINTF_DIRECTIVE_N], | |
| 594 | [ | |
| 595 | AC_REQUIRE([AC_PROG_CC]) | |
| 596 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 597 | AC_CACHE_CHECK([whether printf supports the 'n' directive], | |
| 598 | [gl_cv_func_printf_directive_n], | |
| 599 | [ | |
| 600 | AC_TRY_RUN([ | |
| 601 | #include <stdio.h> | |
| 602 | #include <string.h> | |
| 603 | static char fmtstring[10]; | |
| 604 | static char buf[100]; | |
| 605 | int main () | |
| 606 | { | |
| 607 | int count = -1; | |
| 608 | /* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2) | |
| 609 | support %n in format strings in read-only memory but not in writable | |
| 610 | memory. */ | |
| 611 | strcpy (fmtstring, "%d %n"); | |
| 612 | if (sprintf (buf, fmtstring, 123, &count, 33, 44, 55) < 0 | |
| 613 | || strcmp (buf, "123 ") != 0 | |
| 614 | || count != 4) | |
| 615 | return 1; | |
| 616 | return 0; | |
| 617 | }], [gl_cv_func_printf_directive_n=yes], [gl_cv_func_printf_directive_n=no], | |
| 618 | [ | |
| 619 | changequote(,)dnl | |
| 620 | case "$host_os" in | |
| 621 | *) gl_cv_func_printf_directive_n="guessing yes";; | |
| 622 | esac | |
| 623 | changequote([,])dnl | |
| 624 | ]) | |
| 625 | ]) | |
| 626 | ]) | |
| 627 | ||
| 628 | dnl Test whether the *printf family of functions supports the %ls format | |
| 629 | dnl directive and in particular, when a precision is specified, whether | |
| 630 | dnl the functions stop converting the wide string argument when the number | |
| 631 | dnl of bytes that have been produced by this conversion equals or exceeds | |
| 632 | dnl the precision. | |
| 633 | dnl Result is gl_cv_func_printf_directive_ls. | |
| 634 | ||
| 635 | AC_DEFUN([gl_PRINTF_DIRECTIVE_LS], | |
| 636 | [ | |
| 637 | AC_REQUIRE([AC_PROG_CC]) | |
| 638 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 639 | AC_CACHE_CHECK([whether printf supports the 'ls' directive], | |
| 640 | [gl_cv_func_printf_directive_ls], | |
| 641 | [ | |
| 642 | AC_TRY_RUN([ | |
| 643 | /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
| 644 | <wchar.h>. | |
| 645 | BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
| 646 | included before <wchar.h>. */ | |
| 647 | #include <stddef.h> | |
| 648 | #include <stdio.h> | |
| 649 | #include <time.h> | |
| 650 | #include <wchar.h> | |
| 651 | #include <string.h> | |
| 652 | int main () | |
| 653 | { | |
| 654 | char buf[100]; | |
| 655 | /* Test whether %ls works at all. | |
| 656 | This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on | |
| 657 | Cygwin 1.5. */ | |
| 658 | { | |
| 659 | static const wchar_t wstring[] = { 'a', 'b', 'c', 0 }; | |
| 660 | buf[0] = '\0'; | |
| 661 | if (sprintf (buf, "%ls", wstring) < 0 | |
| 662 | || strcmp (buf, "abc") != 0) | |
| 663 | return 1; | |
| 664 | } | |
| 665 | /* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an | |
| 666 | assertion failure inside libc), but not on OpenBSD 4.0. */ | |
| 667 | { | |
| 668 | static const wchar_t wstring[] = { 'a', 0 }; | |
| 669 | buf[0] = '\0'; | |
| 670 | if (sprintf (buf, "%ls", wstring) < 0 | |
| 671 | || strcmp (buf, "a") != 0) | |
| 672 | return 1; | |
| 673 | } | |
| 674 | /* Test whether precisions in %ls are supported as specified in ISO C 99 | |
| 675 | section 7.19.6.1: | |
| 676 | "If a precision is specified, no more than that many bytes are written | |
| 677 | (including shift sequences, if any), and the array shall contain a | |
| 678 | null wide character if, to equal the multibyte character sequence | |
| 679 | length given by the precision, the function would need to access a | |
| 680 | wide character one past the end of the array." | |
| 681 | This test fails on Solaris 10. */ | |
| 682 | { | |
| 683 | static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 }; | |
| 684 | buf[0] = '\0'; | |
| 685 | if (sprintf (buf, "%.2ls", wstring) < 0 | |
| 686 | || strcmp (buf, "ab") != 0) | |
| 687 | return 1; | |
| 688 | } | |
| 689 | return 0; | |
| 690 | }], [gl_cv_func_printf_directive_ls=yes], [gl_cv_func_printf_directive_ls=no], | |
| 691 | [ | |
| 692 | changequote(,)dnl | |
| 693 | case "$host_os" in | |
| 694 | openbsd*) gl_cv_func_printf_directive_ls="guessing no";; | |
| 695 | irix*) gl_cv_func_printf_directive_ls="guessing no";; | |
| 696 | solaris*) gl_cv_func_printf_directive_ls="guessing no";; | |
| 697 | cygwin*) gl_cv_func_printf_directive_ls="guessing no";; | |
| 698 | beos* | haiku*) gl_cv_func_printf_directive_ls="guessing no";; | |
| 699 | *) gl_cv_func_printf_directive_ls="guessing yes";; | |
| 700 | esac | |
| 701 | changequote([,])dnl | |
| 702 | ]) | |
| 703 | ]) | |
| 704 | ]) | |
| 705 | ||
| 706 | dnl Test whether the *printf family of functions supports POSIX/XSI format | |
| 707 | dnl strings with positions. (POSIX:2001) | |
| 708 | dnl Result is gl_cv_func_printf_positions. | |
| 709 | ||
| 710 | AC_DEFUN([gl_PRINTF_POSITIONS], | |
| 711 | [ | |
| 712 | AC_REQUIRE([AC_PROG_CC]) | |
| 713 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 714 | AC_CACHE_CHECK([whether printf supports POSIX/XSI format strings with positions], | |
| 715 | [gl_cv_func_printf_positions], | |
| 716 | [ | |
| 717 | AC_TRY_RUN([ | |
| 718 | #include <stdio.h> | |
| 719 | #include <string.h> | |
| 720 | /* The string "%2$d %1$d", with dollar characters protected from the shell's | |
| 721 | dollar expansion (possibly an autoconf bug). */ | |
| 722 | static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' }; | |
| 723 | static char buf[100]; | |
| 724 | int main () | |
| 725 | { | |
| 726 | sprintf (buf, format, 33, 55); | |
| 727 | return (strcmp (buf, "55 33") != 0); | |
| 728 | }], [gl_cv_func_printf_positions=yes], [gl_cv_func_printf_positions=no], | |
| 729 | [ | |
| 730 | changequote(,)dnl | |
| 731 | case "$host_os" in | |
| 732 | netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*) | |
| 733 | gl_cv_func_printf_positions="guessing no";; | |
| 734 | beos*) gl_cv_func_printf_positions="guessing no";; | |
| 735 | mingw* | pw*) gl_cv_func_printf_positions="guessing no";; | |
| 736 | *) gl_cv_func_printf_positions="guessing yes";; | |
| 737 | esac | |
| 738 | changequote([,])dnl | |
| 739 | ]) | |
| 740 | ]) | |
| 741 | ]) | |
| 742 | ||
| 743 | dnl Test whether the *printf family of functions supports POSIX/XSI format | |
| 744 | dnl strings with the ' flag for grouping of decimal digits. (POSIX:2001) | |
| 745 | dnl Result is gl_cv_func_printf_flag_grouping. | |
| 746 | ||
| 747 | AC_DEFUN([gl_PRINTF_FLAG_GROUPING], | |
| 748 | [ | |
| 749 | AC_REQUIRE([AC_PROG_CC]) | |
| 750 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 751 | AC_CACHE_CHECK([whether printf supports the grouping flag], | |
| 752 | [gl_cv_func_printf_flag_grouping], | |
| 753 | [ | |
| 754 | AC_TRY_RUN([ | |
| 755 | #include <stdio.h> | |
| 756 | #include <string.h> | |
| 757 | static char buf[100]; | |
| 758 | int main () | |
| 759 | { | |
| 760 | if (sprintf (buf, "%'d %d", 1234567, 99) < 0 | |
| 761 | || buf[strlen (buf) - 1] != '9') | |
| 762 | return 1; | |
| 763 | return 0; | |
| 764 | }], [gl_cv_func_printf_flag_grouping=yes], [gl_cv_func_printf_flag_grouping=no], | |
| 765 | [ | |
| 766 | changequote(,)dnl | |
| 767 | case "$host_os" in | |
| 768 | cygwin*) gl_cv_func_printf_flag_grouping="guessing no";; | |
| 769 | netbsd*) gl_cv_func_printf_flag_grouping="guessing no";; | |
| 770 | mingw* | pw*) gl_cv_func_printf_flag_grouping="guessing no";; | |
| 771 | *) gl_cv_func_printf_flag_grouping="guessing yes";; | |
| 772 | esac | |
| 773 | changequote([,])dnl | |
| 774 | ]) | |
| 775 | ]) | |
| 776 | ]) | |
| 777 | ||
| 778 | dnl Test whether the *printf family of functions supports the - flag correctly. | |
| 779 | dnl (ISO C99.) See | |
| 780 | dnl <http://lists.gnu.org/archive/html/bug-coreutils/2008-02/msg00035.html> | |
| 781 | dnl Result is gl_cv_func_printf_flag_leftadjust. | |
| 782 | ||
| 783 | AC_DEFUN([gl_PRINTF_FLAG_LEFTADJUST], | |
| 784 | [ | |
| 785 | AC_REQUIRE([AC_PROG_CC]) | |
| 786 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 787 | AC_CACHE_CHECK([whether printf supports the left-adjust flag correctly], | |
| 788 | [gl_cv_func_printf_flag_leftadjust], | |
| 789 | [ | |
| 790 | AC_TRY_RUN([ | |
| 791 | #include <stdio.h> | |
| 792 | #include <string.h> | |
| 793 | static char buf[100]; | |
| 794 | int main () | |
| 795 | { | |
| 796 | /* Check that a '-' flag is not annihilated by a negative width. */ | |
| 797 | if (sprintf (buf, "a%-*sc", -3, "b") < 0 | |
| 798 | || strcmp (buf, "ab c") != 0) | |
| 799 | return 1; | |
| 800 | return 0; | |
| 801 | }], | |
| 802 | [gl_cv_func_printf_flag_leftadjust=yes], | |
| 803 | [gl_cv_func_printf_flag_leftadjust=no], | |
| 804 | [ | |
| 805 | changequote(,)dnl | |
| 806 | case "$host_os" in | |
| 807 | # Guess yes on HP-UX 11. | |
| 808 | hpux11*) gl_cv_func_printf_flag_leftadjust="guessing yes";; | |
| 809 | # Guess no on HP-UX 10 and older. | |
| 810 | hpux*) gl_cv_func_printf_flag_leftadjust="guessing no";; | |
| 811 | # Guess yes otherwise. | |
| 812 | *) gl_cv_func_printf_flag_leftadjust="guessing yes";; | |
| 813 | esac | |
| 814 | changequote([,])dnl | |
| 815 | ]) | |
| 816 | ]) | |
| 817 | ]) | |
| 818 | ||
| 819 | dnl Test whether the *printf family of functions supports padding of non-finite | |
| 820 | dnl values with the 0 flag correctly. (ISO C99 + TC1 + TC2.) See | |
| 821 | dnl <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> | |
| 822 | dnl Result is gl_cv_func_printf_flag_zero. | |
| 823 | ||
| 824 | AC_DEFUN([gl_PRINTF_FLAG_ZERO], | |
| 825 | [ | |
| 826 | AC_REQUIRE([AC_PROG_CC]) | |
| 827 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 828 | AC_CACHE_CHECK([whether printf supports the zero flag correctly], | |
| 829 | [gl_cv_func_printf_flag_zero], | |
| 830 | [ | |
| 831 | AC_TRY_RUN([ | |
| 832 | #include <stdio.h> | |
| 833 | #include <string.h> | |
| 834 | static char buf[100]; | |
| 835 | int main () | |
| 836 | { | |
| 837 | if (sprintf (buf, "%010f", 1.0 / 0.0, 33, 44, 55) < 0 | |
| 838 | || (strcmp (buf, " inf") != 0 | |
| 839 | && strcmp (buf, " infinity") != 0)) | |
| 840 | return 1; | |
| 841 | return 0; | |
| 842 | }], [gl_cv_func_printf_flag_zero=yes], [gl_cv_func_printf_flag_zero=no], | |
| 843 | [ | |
| 844 | changequote(,)dnl | |
| 845 | case "$host_os" in | |
| 846 | # Guess yes on glibc systems. | |
| 847 | *-gnu*) gl_cv_func_printf_flag_zero="guessing yes";; | |
| 848 | # Guess yes on BeOS. | |
| 849 | beos*) gl_cv_func_printf_flag_zero="guessing yes";; | |
| 850 | # If we don't know, assume the worst. | |
| 851 | *) gl_cv_func_printf_flag_zero="guessing no";; | |
| 852 | esac | |
| 853 | changequote([,])dnl | |
| 854 | ]) | |
| 855 | ]) | |
| 856 | ]) | |
| 857 | ||
| 858 | dnl Test whether the *printf family of functions supports large precisions. | |
| 859 | dnl On mingw, precisions larger than 512 are treated like 512, in integer, | |
| 860 | dnl floating-point or pointer output. On BeOS, precisions larger than 1044 | |
| 861 | dnl crash the program. | |
| 862 | dnl Result is gl_cv_func_printf_precision. | |
| 863 | ||
| 864 | AC_DEFUN([gl_PRINTF_PRECISION], | |
| 865 | [ | |
| 866 | AC_REQUIRE([AC_PROG_CC]) | |
| 867 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 868 | AC_CACHE_CHECK([whether printf supports large precisions], | |
| 869 | [gl_cv_func_printf_precision], | |
| 870 | [ | |
| 871 | AC_TRY_RUN([ | |
| 872 | #include <stdio.h> | |
| 873 | #include <string.h> | |
| 874 | static char buf[5000]; | |
| 875 | int main () | |
| 876 | { | |
| 877 | #ifdef __BEOS__ | |
| 878 | /* On BeOS, this would crash and show a dialog box. Avoid the crash. */ | |
| 879 | return 1; | |
| 880 | #endif | |
| 881 | if (sprintf (buf, "%.4000d %d", 1, 33, 44) < 4000 + 3) | |
| 882 | return 1; | |
| 883 | return 0; | |
| 884 | }], [gl_cv_func_printf_precision=yes], [gl_cv_func_printf_precision=no], | |
| 885 | [ | |
| 886 | changequote(,)dnl | |
| 887 | case "$host_os" in | |
| 888 | # Guess no only on native Win32 and BeOS systems. | |
| 889 | mingw* | pw*) gl_cv_func_printf_precision="guessing no" ;; | |
| 890 | beos*) gl_cv_func_printf_precision="guessing no" ;; | |
| 891 | *) gl_cv_func_printf_precision="guessing yes" ;; | |
| 892 | esac | |
| 893 | changequote([,])dnl | |
| 894 | ]) | |
| 895 | ]) | |
| 896 | ]) | |
| 897 | ||
| 898 | dnl Test whether the *printf family of functions recovers gracefully in case | |
| 899 | dnl of an out-of-memory condition, or whether it crashes the entire program. | |
| 900 | dnl Result is gl_cv_func_printf_enomem. | |
| 901 | ||
| 902 | AC_DEFUN([gl_PRINTF_ENOMEM], | |
| 903 | [ | |
| 904 | AC_REQUIRE([AC_PROG_CC]) | |
| 905 | AC_REQUIRE([gl_MULTIARCH]) | |
| 906 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 907 | AC_CACHE_CHECK([whether printf survives out-of-memory conditions], | |
| 908 | [gl_cv_func_printf_enomem], | |
| 909 | [ | |
| 910 | gl_cv_func_printf_enomem="guessing no" | |
| 911 | if test "$cross_compiling" = no; then | |
| 912 | if test $APPLE_UNIVERSAL_BUILD = 0; then | |
| 913 | AC_LANG_CONFTEST([AC_LANG_SOURCE([ | |
| 914 | ]GL_NOCRASH[ | |
| 915 | changequote(,)dnl | |
| 916 | #include <stdio.h> | |
| 917 | #include <sys/types.h> | |
| 918 | #include <sys/time.h> | |
| 919 | #include <sys/resource.h> | |
| 920 | #include <errno.h> | |
| 921 | int main() | |
| 922 | { | |
| 923 | struct rlimit limit; | |
| 924 | int ret; | |
| 925 | nocrash_init (); | |
| 926 | /* Some printf implementations allocate temporary space with malloc. */ | |
| 927 | /* On BSD systems, malloc() is limited by RLIMIT_DATA. */ | |
| 928 | #ifdef RLIMIT_DATA | |
| 929 | if (getrlimit (RLIMIT_DATA, &limit) < 0) | |
| 930 | return 77; | |
| 931 | if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) | |
| 932 | limit.rlim_max = 5000000; | |
| 933 | limit.rlim_cur = limit.rlim_max; | |
| 934 | if (setrlimit (RLIMIT_DATA, &limit) < 0) | |
| 935 | return 77; | |
| 936 | #endif | |
| 937 | /* On Linux systems, malloc() is limited by RLIMIT_AS. */ | |
| 938 | #ifdef RLIMIT_AS | |
| 939 | if (getrlimit (RLIMIT_AS, &limit) < 0) | |
| 940 | return 77; | |
| 941 | if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) | |
| 942 | limit.rlim_max = 5000000; | |
| 943 | limit.rlim_cur = limit.rlim_max; | |
| 944 | if (setrlimit (RLIMIT_AS, &limit) < 0) | |
| 945 | return 77; | |
| 946 | #endif | |
| 947 | /* Some printf implementations allocate temporary space on the stack. */ | |
| 948 | #ifdef RLIMIT_STACK | |
| 949 | if (getrlimit (RLIMIT_STACK, &limit) < 0) | |
| 950 | return 77; | |
| 951 | if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) | |
| 952 | limit.rlim_max = 5000000; | |
| 953 | limit.rlim_cur = limit.rlim_max; | |
| 954 | if (setrlimit (RLIMIT_STACK, &limit) < 0) | |
| 955 | return 77; | |
| 956 | #endif | |
| 957 | ret = printf ("%.5000000f", 1.0); | |
| 958 | return !(ret == 5000002 || (ret < 0 && errno == ENOMEM)); | |
| 959 | } | |
| 960 | changequote([,])dnl | |
| 961 | ])]) | |
| 962 | if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then | |
| 963 | (./conftest | |
| 964 | result=$? | |
| 965 | if test $result != 0 && test $result != 77; then result=1; fi | |
| 966 | exit $result | |
| 967 | ) >/dev/null 2>/dev/null | |
| 968 | case $? in | |
| 969 | 0) gl_cv_func_printf_enomem="yes" ;; | |
| 970 | 77) gl_cv_func_printf_enomem="guessing no" ;; | |
| 971 | *) gl_cv_func_printf_enomem="no" ;; | |
| 972 | esac | |
| 973 | else | |
| 974 | gl_cv_func_printf_enomem="guessing no" | |
| 975 | fi | |
| 976 | rm -fr conftest* | |
| 977 | else | |
| 978 | dnl A universal build on Apple MacOS X platforms. | |
| 979 | dnl The result would be 'no' in 32-bit mode and 'yes' in 64-bit mode. | |
| 980 | dnl But we need a configuration result that is valid in both modes. | |
| 981 | gl_cv_func_printf_enomem="guessing no" | |
| 982 | fi | |
| 983 | fi | |
| 984 | if test "$gl_cv_func_printf_enomem" = "guessing no"; then | |
| 985 | changequote(,)dnl | |
| 986 | case "$host_os" in | |
| 987 | # Guess yes on glibc systems. | |
| 988 | *-gnu*) gl_cv_func_printf_enomem="guessing yes";; | |
| 989 | # Guess yes on Solaris. | |
| 990 | solaris*) gl_cv_func_printf_enomem="guessing yes";; | |
| 991 | # Guess yes on AIX. | |
| 992 | aix*) gl_cv_func_printf_enomem="guessing yes";; | |
| 993 | # Guess yes on HP-UX/hppa. | |
| 994 | hpux*) case "$host_cpu" in | |
| 995 | hppa*) gl_cv_func_printf_enomem="guessing yes";; | |
| 996 | *) gl_cv_func_printf_enomem="guessing no";; | |
| 997 | esac | |
| 998 | ;; | |
| 999 | # Guess yes on IRIX. | |
| 1000 | irix*) gl_cv_func_printf_enomem="guessing yes";; | |
| 1001 | # Guess yes on OSF/1. | |
| 1002 | osf*) gl_cv_func_printf_enomem="guessing yes";; | |
| 1003 | # Guess yes on BeOS. | |
| 1004 | beos*) gl_cv_func_printf_enomem="guessing yes";; | |
| 1005 | # Guess yes on Haiku. | |
| 1006 | haiku*) gl_cv_func_printf_enomem="guessing yes";; | |
| 1007 | # If we don't know, assume the worst. | |
| 1008 | *) gl_cv_func_printf_enomem="guessing no";; | |
| 1009 | esac | |
| 1010 | changequote([,])dnl | |
| 1011 | fi | |
| 1012 | ]) | |
| 1013 | ]) | |
| 1014 | ||
| 1015 | dnl Test whether the snprintf function exists. (ISO C99, POSIX:2001) | |
| 1016 | dnl Result is ac_cv_func_snprintf. | |
| 1017 | ||
| 1018 | AC_DEFUN([gl_SNPRINTF_PRESENCE], | |
| 1019 | [ | |
| 1020 | AC_CHECK_FUNCS_ONCE([snprintf]) | |
| 1021 | ]) | |
| 1022 | ||
| 1023 | dnl Test whether the string produced by the snprintf function is always NUL | |
| 1024 | dnl terminated. (ISO C99, POSIX:2001) | |
| 1025 | dnl Result is gl_cv_func_snprintf_truncation_c99. | |
| 1026 | ||
| 1027 | AC_DEFUN([gl_SNPRINTF_TRUNCATION_C99], | |
| 1028 | [ | |
| 1029 | AC_REQUIRE([AC_PROG_CC]) | |
| 1030 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 1031 | AC_CACHE_CHECK([whether snprintf truncates the result as in C99], | |
| 1032 | [gl_cv_func_snprintf_truncation_c99], | |
| 1033 | [ | |
| 1034 | AC_TRY_RUN([ | |
| 1035 | #include <stdio.h> | |
| 1036 | #include <string.h> | |
| 1037 | static char buf[100]; | |
| 1038 | int main () | |
| 1039 | { | |
| 1040 | strcpy (buf, "ABCDEF"); | |
| 1041 | snprintf (buf, 3, "%d %d", 4567, 89); | |
| 1042 | if (memcmp (buf, "45\0DEF", 6) != 0) | |
| 1043 | return 1; | |
| 1044 | return 0; | |
| 1045 | }], [gl_cv_func_snprintf_truncation_c99=yes], [gl_cv_func_snprintf_truncation_c99=no], | |
| 1046 | [ | |
| 1047 | changequote(,)dnl | |
| 1048 | case "$host_os" in | |
| 1049 | # Guess yes on glibc systems. | |
| 1050 | *-gnu*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1051 | # Guess yes on FreeBSD >= 5. | |
| 1052 | freebsd[1-4]*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1053 | freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1054 | # Guess yes on MacOS X >= 10.3. | |
| 1055 | darwin[1-6].*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1056 | darwin*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1057 | # Guess yes on OpenBSD >= 3.9. | |
| 1058 | openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) | |
| 1059 | gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1060 | openbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1061 | # Guess yes on Solaris >= 2.6. | |
| 1062 | solaris2.[0-5]*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1063 | solaris*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1064 | # Guess yes on AIX >= 4. | |
| 1065 | aix[1-3]*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1066 | aix*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1067 | # Guess yes on HP-UX >= 11. | |
| 1068 | hpux[7-9]* | hpux10*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1069 | hpux*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1070 | # Guess yes on IRIX >= 6.5. | |
| 1071 | irix6.5) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1072 | # Guess yes on OSF/1 >= 5. | |
| 1073 | osf[3-4]*) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1074 | osf*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1075 | # Guess yes on NetBSD >= 3. | |
| 1076 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
| 1077 | gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1078 | netbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1079 | # Guess yes on BeOS. | |
| 1080 | beos*) gl_cv_func_snprintf_truncation_c99="guessing yes";; | |
| 1081 | # If we don't know, assume the worst. | |
| 1082 | *) gl_cv_func_snprintf_truncation_c99="guessing no";; | |
| 1083 | esac | |
| 1084 | changequote([,])dnl | |
| 1085 | ]) | |
| 1086 | ]) | |
| 1087 | ]) | |
| 1088 | ||
| 1089 | dnl Test whether the return value of the snprintf function is the number | |
| 1090 | dnl of bytes (excluding the terminating NUL) that would have been produced | |
| 1091 | dnl if the buffer had been large enough. (ISO C99, POSIX:2001) | |
| 1092 | dnl For example, this test program fails on IRIX 6.5: | |
| 1093 | dnl --------------------------------------------------------------------- | |
| 1094 | dnl #include <stdio.h> | |
| 1095 | dnl int main() | |
| 1096 | dnl { | |
| 1097 | dnl static char buf[8]; | |
| 1098 | dnl int retval = snprintf (buf, 3, "%d", 12345); | |
| 1099 | dnl return retval >= 0 && retval < 3; | |
| 1100 | dnl } | |
| 1101 | dnl --------------------------------------------------------------------- | |
| 1102 | dnl Result is gl_cv_func_snprintf_retval_c99. | |
| 1103 | ||
| 1104 | AC_DEFUN([gl_SNPRINTF_RETVAL_C99], | |
| 1105 | [ | |
| 1106 | AC_REQUIRE([AC_PROG_CC]) | |
| 1107 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 1108 | AC_CACHE_CHECK([whether snprintf returns a byte count as in C99], | |
| 1109 | [gl_cv_func_snprintf_retval_c99], | |
| 1110 | [ | |
| 1111 | AC_TRY_RUN([ | |
| 1112 | #include <stdio.h> | |
| 1113 | #include <string.h> | |
| 1114 | static char buf[100]; | |
| 1115 | int main () | |
| 1116 | { | |
| 1117 | strcpy (buf, "ABCDEF"); | |
| 1118 | if (snprintf (buf, 3, "%d %d", 4567, 89) != 7) | |
| 1119 | return 1; | |
| 1120 | return 0; | |
| 1121 | }], [gl_cv_func_snprintf_retval_c99=yes], [gl_cv_func_snprintf_retval_c99=no], | |
| 1122 | [ | |
| 1123 | changequote(,)dnl | |
| 1124 | case "$host_os" in | |
| 1125 | # Guess yes on glibc systems. | |
| 1126 | *-gnu*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
| 1127 | # Guess yes on FreeBSD >= 5. | |
| 1128 | freebsd[1-4]*) gl_cv_func_snprintf_retval_c99="guessing no";; | |
| 1129 | freebsd* | kfreebsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
| 1130 | # Guess yes on MacOS X >= 10.3. | |
| 1131 | darwin[1-6].*) gl_cv_func_snprintf_retval_c99="guessing no";; | |
| 1132 | darwin*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
| 1133 | # Guess yes on OpenBSD >= 3.9. | |
| 1134 | openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) | |
| 1135 | gl_cv_func_snprintf_retval_c99="guessing no";; | |
| 1136 | openbsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
| 1137 | # Guess yes on Solaris >= 2.6. | |
| 1138 | solaris2.[0-5]*) gl_cv_func_snprintf_retval_c99="guessing no";; | |
| 1139 | solaris*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
| 1140 | # Guess yes on AIX >= 4. | |
| 1141 | aix[1-3]*) gl_cv_func_snprintf_retval_c99="guessing no";; | |
| 1142 | aix*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
| 1143 | # Guess yes on NetBSD >= 3. | |
| 1144 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
| 1145 | gl_cv_func_snprintf_retval_c99="guessing no";; | |
| 1146 | netbsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
| 1147 | # Guess yes on BeOS. | |
| 1148 | beos*) gl_cv_func_snprintf_retval_c99="guessing yes";; | |
| 1149 | # If we don't know, assume the worst. | |
| 1150 | *) gl_cv_func_snprintf_retval_c99="guessing no";; | |
| 1151 | esac | |
| 1152 | changequote([,])dnl | |
| 1153 | ]) | |
| 1154 | ]) | |
| 1155 | ]) | |
| 1156 | ||
| 1157 | dnl Test whether the snprintf function supports the %n format directive | |
| 1158 | dnl also in truncated portions of the format string. (ISO C99, POSIX:2001) | |
| 1159 | dnl Result is gl_cv_func_snprintf_directive_n. | |
| 1160 | ||
| 1161 | AC_DEFUN([gl_SNPRINTF_DIRECTIVE_N], | |
| 1162 | [ | |
| 1163 | AC_REQUIRE([AC_PROG_CC]) | |
| 1164 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 1165 | AC_CACHE_CHECK([whether snprintf fully supports the 'n' directive], | |
| 1166 | [gl_cv_func_snprintf_directive_n], | |
| 1167 | [ | |
| 1168 | AC_TRY_RUN([ | |
| 1169 | #include <stdio.h> | |
| 1170 | #include <string.h> | |
| 1171 | static char fmtstring[10]; | |
| 1172 | static char buf[100]; | |
| 1173 | int main () | |
| 1174 | { | |
| 1175 | int count = -1; | |
| 1176 | /* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2) | |
| 1177 | support %n in format strings in read-only memory but not in writable | |
| 1178 | memory. */ | |
| 1179 | strcpy (fmtstring, "%d %n"); | |
| 1180 | snprintf (buf, 4, fmtstring, 12345, &count, 33, 44, 55); | |
| 1181 | if (count != 6) | |
| 1182 | return 1; | |
| 1183 | return 0; | |
| 1184 | }], [gl_cv_func_snprintf_directive_n=yes], [gl_cv_func_snprintf_directive_n=no], | |
| 1185 | [ | |
| 1186 | changequote(,)dnl | |
| 1187 | case "$host_os" in | |
| 1188 | # Guess yes on glibc systems. | |
| 1189 | *-gnu*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1190 | # Guess yes on FreeBSD >= 5. | |
| 1191 | freebsd[1-4]*) gl_cv_func_snprintf_directive_n="guessing no";; | |
| 1192 | freebsd* | kfreebsd*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1193 | # Guess yes on MacOS X >= 10.3. | |
| 1194 | darwin[1-6].*) gl_cv_func_snprintf_directive_n="guessing no";; | |
| 1195 | darwin*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1196 | # Guess yes on Solaris >= 2.6. | |
| 1197 | solaris2.[0-5]*) gl_cv_func_snprintf_directive_n="guessing no";; | |
| 1198 | solaris*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1199 | # Guess yes on AIX >= 4. | |
| 1200 | aix[1-3]*) gl_cv_func_snprintf_directive_n="guessing no";; | |
| 1201 | aix*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1202 | # Guess yes on IRIX >= 6.5. | |
| 1203 | irix6.5) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1204 | # Guess yes on OSF/1 >= 5. | |
| 1205 | osf[3-4]*) gl_cv_func_snprintf_directive_n="guessing no";; | |
| 1206 | osf*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1207 | # Guess yes on NetBSD >= 3. | |
| 1208 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
| 1209 | gl_cv_func_snprintf_directive_n="guessing no";; | |
| 1210 | netbsd*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1211 | # Guess yes on BeOS. | |
| 1212 | beos*) gl_cv_func_snprintf_directive_n="guessing yes";; | |
| 1213 | # If we don't know, assume the worst. | |
| 1214 | *) gl_cv_func_snprintf_directive_n="guessing no";; | |
| 1215 | esac | |
| 1216 | changequote([,])dnl | |
| 1217 | ]) | |
| 1218 | ]) | |
| 1219 | ]) | |
| 1220 | ||
| 1221 | dnl Test whether the snprintf function, when passed a size = 1, writes any | |
| 1222 | dnl output without bounds in this case, behaving like sprintf. This is the | |
| 1223 | dnl case on Linux libc5. | |
| 1224 | dnl Result is gl_cv_func_snprintf_size1. | |
| 1225 | ||
| 1226 | AC_DEFUN([gl_SNPRINTF_SIZE1], | |
| 1227 | [ | |
| 1228 | AC_REQUIRE([AC_PROG_CC]) | |
| 1229 | AC_CACHE_CHECK([whether snprintf respects a size of 1], | |
| 1230 | [gl_cv_func_snprintf_size1], | |
| 1231 | [ | |
| 1232 | AC_TRY_RUN([ | |
| 1233 | #include <stdio.h> | |
| 1234 | int main() | |
| 1235 | { | |
| 1236 | static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; | |
| 1237 | snprintf (buf, 1, "%d", 12345); | |
| 1238 | return buf[1] != 'E'; | |
| 1239 | }], | |
| 1240 | [gl_cv_func_snprintf_size1=yes], | |
| 1241 | [gl_cv_func_snprintf_size1=no], | |
| 1242 | [gl_cv_func_snprintf_size1="guessing yes"]) | |
| 1243 | ]) | |
| 1244 | ]) | |
| 1245 | ||
| 1246 | dnl Test whether the vsnprintf function, when passed a zero size, produces no | |
| 1247 | dnl output. (ISO C99, POSIX:2001) | |
| 1248 | dnl For example, snprintf nevertheless writes a NUL byte in this case | |
| 1249 | dnl on OSF/1 5.1: | |
| 1250 | dnl --------------------------------------------------------------------- | |
| 1251 | dnl #include <stdio.h> | |
| 1252 | dnl int main() | |
| 1253 | dnl { | |
| 1254 | dnl static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; | |
| 1255 | dnl snprintf (buf, 0, "%d", 12345); | |
| 1256 | dnl return buf[0] != 'D'; | |
| 1257 | dnl } | |
| 1258 | dnl --------------------------------------------------------------------- | |
| 1259 | dnl And vsnprintf writes any output without bounds in this case, behaving like | |
| 1260 | dnl vsprintf, on HP-UX 11 and OSF/1 5.1: | |
| 1261 | dnl --------------------------------------------------------------------- | |
| 1262 | dnl #include <stdarg.h> | |
| 1263 | dnl #include <stdio.h> | |
| 1264 | dnl static int my_snprintf (char *buf, int size, const char *format, ...) | |
| 1265 | dnl { | |
| 1266 | dnl va_list args; | |
| 1267 | dnl int ret; | |
| 1268 | dnl va_start (args, format); | |
| 1269 | dnl ret = vsnprintf (buf, size, format, args); | |
| 1270 | dnl va_end (args); | |
| 1271 | dnl return ret; | |
| 1272 | dnl } | |
| 1273 | dnl int main() | |
| 1274 | dnl { | |
| 1275 | dnl static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; | |
| 1276 | dnl my_snprintf (buf, 0, "%d", 12345); | |
| 1277 | dnl return buf[0] != 'D'; | |
| 1278 | dnl } | |
| 1279 | dnl --------------------------------------------------------------------- | |
| 1280 | dnl Result is gl_cv_func_vsnprintf_zerosize_c99. | |
| 1281 | ||
| 1282 | AC_DEFUN([gl_VSNPRINTF_ZEROSIZE_C99], | |
| 1283 | [ | |
| 1284 | AC_REQUIRE([AC_PROG_CC]) | |
| 1285 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
| 1286 | AC_CACHE_CHECK([whether vsnprintf respects a zero size as in C99], | |
| 1287 | [gl_cv_func_vsnprintf_zerosize_c99], | |
| 1288 | [ | |
| 1289 | AC_TRY_RUN([ | |
| 1290 | #include <stdarg.h> | |
| 1291 | #include <stdio.h> | |
| 1292 | static int my_snprintf (char *buf, int size, const char *format, ...) | |
| 1293 | { | |
| 1294 | va_list args; | |
| 1295 | int ret; | |
| 1296 | va_start (args, format); | |
| 1297 | ret = vsnprintf (buf, size, format, args); | |
| 1298 | va_end (args); | |
| 1299 | return ret; | |
| 1300 | } | |
| 1301 | int main() | |
| 1302 | { | |
| 1303 | static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; | |
| 1304 | my_snprintf (buf, 0, "%d", 12345); | |
| 1305 | return buf[0] != 'D'; | |
| 1306 | }], | |
| 1307 | [gl_cv_func_vsnprintf_zerosize_c99=yes], | |
| 1308 | [gl_cv_func_vsnprintf_zerosize_c99=no], | |
| 1309 | [ | |
| 1310 | changequote(,)dnl | |
| 1311 | case "$host_os" in | |
| 1312 | # Guess yes on glibc systems. | |
| 1313 | *-gnu*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1314 | # Guess yes on FreeBSD >= 5. | |
| 1315 | freebsd[1-4]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
| 1316 | freebsd* | kfreebsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1317 | # Guess yes on MacOS X >= 10.3. | |
| 1318 | darwin[1-6].*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
| 1319 | darwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1320 | # Guess yes on Cygwin. | |
| 1321 | cygwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1322 | # Guess yes on Solaris >= 2.6. | |
| 1323 | solaris2.[0-5]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
| 1324 | solaris*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1325 | # Guess yes on AIX >= 4. | |
| 1326 | aix[1-3]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
| 1327 | aix*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1328 | # Guess yes on IRIX >= 6.5. | |
| 1329 | irix6.5) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1330 | # Guess yes on NetBSD >= 3. | |
| 1331 | netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) | |
| 1332 | gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
| 1333 | netbsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1334 | # Guess yes on BeOS. | |
| 1335 | beos*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1336 | # Guess yes on mingw. | |
| 1337 | mingw* | pw*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; | |
| 1338 | # If we don't know, assume the worst. | |
| 1339 | *) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; | |
| 1340 | esac | |
| 1341 | changequote([,])dnl | |
| 1342 | ]) | |
| 1343 | ]) | |
| 1344 | ]) | |
| 1345 | ||
| 1346 | dnl The results of these tests on various platforms are: | |
| 1347 | dnl | |
| 1348 | dnl 1 = gl_PRINTF_SIZES_C99 | |
| 1349 | dnl 2 = gl_PRINTF_LONG_DOUBLE | |
| 1350 | dnl 3 = gl_PRINTF_INFINITE | |
| 1351 | dnl 4 = gl_PRINTF_INFINITE_LONG_DOUBLE | |
| 1352 | dnl 5 = gl_PRINTF_DIRECTIVE_A | |
| 1353 | dnl 6 = gl_PRINTF_DIRECTIVE_F | |
| 1354 | dnl 7 = gl_PRINTF_DIRECTIVE_N | |
| 1355 | dnl 8 = gl_PRINTF_DIRECTIVE_LS | |
| 1356 | dnl 9 = gl_PRINTF_POSITIONS | |
| 1357 | dnl 10 = gl_PRINTF_FLAG_GROUPING | |
| 1358 | dnl 11 = gl_PRINTF_FLAG_LEFTADJUST | |
| 1359 | dnl 12 = gl_PRINTF_FLAG_ZERO | |
| 1360 | dnl 13 = gl_PRINTF_PRECISION | |
| 1361 | dnl 14 = gl_PRINTF_ENOMEM | |
| 1362 | dnl 15 = gl_SNPRINTF_PRESENCE | |
| 1363 | dnl 16 = gl_SNPRINTF_TRUNCATION_C99 | |
| 1364 | dnl 17 = gl_SNPRINTF_RETVAL_C99 | |
| 1365 | dnl 18 = gl_SNPRINTF_DIRECTIVE_N | |
| 1366 | dnl 19 = gl_SNPRINTF_SIZE1 | |
| 1367 | dnl 20 = gl_VSNPRINTF_ZEROSIZE_C99 | |
| 1368 | dnl | |
| 1369 | dnl 1 = checking whether printf supports size specifiers as in C99... | |
| 1370 | dnl 2 = checking whether printf supports 'long double' arguments... | |
| 1371 | dnl 3 = checking whether printf supports infinite 'double' arguments... | |
| 1372 | dnl 4 = checking whether printf supports infinite 'long double' arguments... | |
| 1373 | dnl 5 = checking whether printf supports the 'a' and 'A' directives... | |
| 1374 | dnl 6 = checking whether printf supports the 'F' directive... | |
| 1375 | dnl 7 = checking whether printf supports the 'n' directive... | |
| 1376 | dnl 8 = checking whether printf supports the 'ls' directive... | |
| 1377 | dnl 9 = checking whether printf supports POSIX/XSI format strings with positions... | |
| 1378 | dnl 10 = checking whether printf supports the grouping flag... | |
| 1379 | dnl 11 = checking whether printf supports the left-adjust flag correctly... | |
| 1380 | dnl 12 = checking whether printf supports the zero flag correctly... | |
| 1381 | dnl 13 = checking whether printf supports large precisions... | |
| 1382 | dnl 14 = checking whether printf survives out-of-memory conditions... | |
| 1383 | dnl 15 = checking for snprintf... | |
| 1384 | dnl 16 = checking whether snprintf truncates the result as in C99... | |
| 1385 | dnl 17 = checking whether snprintf returns a byte count as in C99... | |
| 1386 | dnl 18 = checking whether snprintf fully supports the 'n' directive... | |
| 1387 | dnl 19 = checking whether snprintf respects a size of 1... | |
| 1388 | dnl 20 = checking whether vsnprintf respects a zero size as in C99... | |
| 1389 | dnl | |
| 1390 | dnl . = yes, # = no. | |
| 1391 | dnl | |
| 1392 | dnl 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | |
| 1393 | dnl glibc 2.5 . . . . . . . . . . . . . . . . . . . . | |
| 1394 | dnl glibc 2.3.6 . . . . # . . . . . . . . . . . . . . . | |
| 1395 | dnl FreeBSD 5.4, 6.1 . . . . # . . . . . . # . # . . . . . . | |
| 1396 | dnl MacOS X 10.3.9 . . . . # . . . . . . # . # . . . . . . | |
| 1397 | dnl OpenBSD 3.9, 4.0 . . # # # # . # . # . # . # . . . . . . | |
| 1398 | dnl Cygwin 1.7.0 (2009) . . . # . . . ? . . . . . ? . . . . . . | |
| 1399 | dnl Cygwin 1.5.25 (2008) . . . # # . . # . . . . . # . . . . . . | |
| 1400 | dnl Cygwin 1.5.19 (2006) # . . # # # . # . # . # # # . . . . . . | |
| 1401 | dnl Solaris 10 . . # # # . . # . . . # . . . . . . . . | |
| 1402 | dnl Solaris 2.6 ... 9 # . # # # # . # . . . # . . . . . . . . | |
| 1403 | dnl Solaris 2.5.1 # . # # # # . # . . . # . . # # # # # # | |
| 1404 | dnl AIX 5.2 . . # # # . . . . . . # . . . . . . . . | |
| 1405 | dnl AIX 4.3.2, 5.1 # . # # # # . . . . . # . . . . . . . . | |
| 1406 | dnl HP-UX 11.31 . . . . # . . . . . . # . . . . # # . . | |
| 1407 | dnl HP-UX 11.{00,11,23} # . . . # # . . . . . # . . . . # # . # | |
| 1408 | dnl HP-UX 10.20 # . # . # # . ? . . # # . . . . # # ? # | |
| 1409 | dnl IRIX 6.5 # . # # # # . # . . . # . . . . # . . . | |
| 1410 | dnl OSF/1 5.1 # . # # # # . . . . . # . . . . # . . # | |
| 1411 | dnl OSF/1 4.0d # . # # # # . . . . . # . . # # # # # # | |
| 1412 | dnl NetBSD 4.0 . ? ? ? ? ? . ? . ? ? ? ? ? . . . ? ? ? | |
| 1413 | dnl NetBSD 3.0 . . . . # # . ? # # ? # . # . . . . . . | |
| 1414 | dnl Haiku . . . # # # . # . . . . . ? . . . . . . | |
| 1415 | dnl BeOS # # . # # # . ? # . ? . # ? . . . . . . | |
| 1416 | dnl mingw # # # # # # . . # # . # # ? . # # # . . |