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