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