diff options
Diffstat (limited to 'src/gl/m4/printf.m4')
| -rw-r--r-- | src/gl/m4/printf.m4 | 1557 |
1 files changed, 0 insertions, 1557 deletions
diff --git a/src/gl/m4/printf.m4 b/src/gl/m4/printf.m4 deleted file mode 100644 index c7a14b20e0..0000000000 --- a/src/gl/m4/printf.m4 +++ /dev/null @@ -1,1557 +0,0 @@ -# printf.m4 serial 52 -dnl Copyright (C) 2003, 2007-2016 Free Software Foundation, Inc. -dnl This file is free software; the Free Software Foundation -dnl gives unlimited permission to copy and/or distribute it, -dnl with or without modifications, as long as this notice is preserved. - -dnl Test whether the *printf family of functions supports the 'j', 'z', 't', -dnl 'L' size specifiers. (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_printf_sizes_c99. - -AC_DEFUN([gl_PRINTF_SIZES_C99], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([gl_AC_HEADER_STDINT_H]) - AC_REQUIRE([gl_AC_HEADER_INTTYPES_H]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports size specifiers as in C99], - [gl_cv_func_printf_sizes_c99], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stddef.h> -#include <stdio.h> -#include <string.h> -#include <sys/types.h> -#if HAVE_STDINT_H_WITH_UINTMAX -# include <stdint.h> -#endif -#if HAVE_INTTYPES_H_WITH_UINTMAX -# include <inttypes.h> -#endif -static char buf[100]; -int main () -{ - int result = 0; -#if HAVE_STDINT_H_WITH_UINTMAX || HAVE_INTTYPES_H_WITH_UINTMAX - buf[0] = '\0'; - if (sprintf (buf, "%ju %d", (uintmax_t) 12345671, 33, 44, 55) < 0 - || strcmp (buf, "12345671 33") != 0) - result |= 1; -#else - result |= 1; -#endif - buf[0] = '\0'; - if (sprintf (buf, "%zu %d", (size_t) 12345672, 33, 44, 55) < 0 - || strcmp (buf, "12345672 33") != 0) - result |= 2; - buf[0] = '\0'; - if (sprintf (buf, "%tu %d", (ptrdiff_t) 12345673, 33, 44, 55) < 0 - || strcmp (buf, "12345673 33") != 0) - result |= 4; - buf[0] = '\0'; - if (sprintf (buf, "%Lg %d", (long double) 1.5, 33, 44, 55) < 0 - || strcmp (buf, "1.5 33") != 0) - result |= 8; - return result; -}]])], - [gl_cv_func_printf_sizes_c99=yes], - [gl_cv_func_printf_sizes_c99=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_printf_sizes_c99="guessing yes";; - # Guess yes on FreeBSD >= 5. - freebsd[1-4].*) gl_cv_func_printf_sizes_c99="guessing no";; - freebsd* | kfreebsd*) gl_cv_func_printf_sizes_c99="guessing yes";; - # Guess yes on Mac OS X >= 10.3. - darwin[1-6].*) gl_cv_func_printf_sizes_c99="guessing no";; - darwin*) gl_cv_func_printf_sizes_c99="guessing yes";; - # Guess yes on OpenBSD >= 3.9. - openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) - gl_cv_func_printf_sizes_c99="guessing no";; - openbsd*) gl_cv_func_printf_sizes_c99="guessing yes";; - # Guess yes on Solaris >= 2.10. - solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";; - solaris*) gl_cv_func_printf_sizes_c99="guessing no";; - # Guess yes on NetBSD >= 3. - netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) - gl_cv_func_printf_sizes_c99="guessing no";; - netbsd*) gl_cv_func_printf_sizes_c99="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_printf_sizes_c99="guessing no";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports 'long double' -dnl arguments together with the 'L' size specifier. (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_printf_long_double. - -AC_DEFUN([gl_PRINTF_LONG_DOUBLE], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports 'long double' arguments], - [gl_cv_func_printf_long_double], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -static char buf[10000]; -int main () -{ - int result = 0; - buf[0] = '\0'; - if (sprintf (buf, "%Lf %d", 1.75L, 33, 44, 55) < 0 - || strcmp (buf, "1.750000 33") != 0) - result |= 1; - buf[0] = '\0'; - if (sprintf (buf, "%Le %d", 1.75L, 33, 44, 55) < 0 - || strcmp (buf, "1.750000e+00 33") != 0) - result |= 2; - buf[0] = '\0'; - if (sprintf (buf, "%Lg %d", 1.75L, 33, 44, 55) < 0 - || strcmp (buf, "1.75 33") != 0) - result |= 4; - return result; -}]])], - [gl_cv_func_printf_long_double=yes], - [gl_cv_func_printf_long_double=no], - [ -changequote(,)dnl - case "$host_os" in - beos*) gl_cv_func_printf_long_double="guessing no";; - mingw* | pw*) gl_cv_func_printf_long_double="guessing no";; - *) gl_cv_func_printf_long_double="guessing yes";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports infinite and NaN -dnl 'double' arguments and negative zero arguments in the %f, %e, %g -dnl directives. (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_printf_infinite. - -AC_DEFUN([gl_PRINTF_INFINITE], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports infinite 'double' arguments], - [gl_cv_func_printf_infinite], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -static int -strisnan (const char *string, size_t start_index, size_t end_index) -{ - if (start_index < end_index) - { - if (string[start_index] == '-') - start_index++; - if (start_index + 3 <= end_index - && memcmp (string + start_index, "nan", 3) == 0) - { - start_index += 3; - if (start_index == end_index - || (string[start_index] == '(' && string[end_index - 1] == ')')) - return 1; - } - } - return 0; -} -static int -have_minus_zero () -{ - static double plus_zero = 0.0; - double minus_zero = - plus_zero; - return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0; -} -static char buf[10000]; -static double zero = 0.0; -int main () -{ - int result = 0; - if (sprintf (buf, "%f", 1.0 / zero) < 0 - || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) - result |= 1; - if (sprintf (buf, "%f", -1.0 / zero) < 0 - || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) - result |= 1; - if (sprintf (buf, "%f", zero / zero) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 2; - if (sprintf (buf, "%e", 1.0 / zero) < 0 - || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) - result |= 4; - if (sprintf (buf, "%e", -1.0 / zero) < 0 - || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) - result |= 4; - if (sprintf (buf, "%e", zero / zero) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 8; - if (sprintf (buf, "%g", 1.0 / zero) < 0 - || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) - result |= 16; - if (sprintf (buf, "%g", -1.0 / zero) < 0 - || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) - result |= 16; - if (sprintf (buf, "%g", zero / zero) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 32; - /* This test fails on HP-UX 10.20. */ - if (have_minus_zero ()) - if (sprintf (buf, "%g", - zero) < 0 - || strcmp (buf, "-0") != 0) - result |= 64; - return result; -}]])], - [gl_cv_func_printf_infinite=yes], - [gl_cv_func_printf_infinite=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_printf_infinite="guessing yes";; - # Guess yes on FreeBSD >= 6. - freebsd[1-5].*) gl_cv_func_printf_infinite="guessing no";; - freebsd* | kfreebsd*) gl_cv_func_printf_infinite="guessing yes";; - # Guess yes on Mac OS X >= 10.3. - darwin[1-6].*) gl_cv_func_printf_infinite="guessing no";; - darwin*) gl_cv_func_printf_infinite="guessing yes";; - # Guess yes on HP-UX >= 11. - hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite="guessing no";; - hpux*) gl_cv_func_printf_infinite="guessing yes";; - # Guess yes on NetBSD >= 3. - netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) - gl_cv_func_printf_infinite="guessing no";; - netbsd*) gl_cv_func_printf_infinite="guessing yes";; - # Guess yes on BeOS. - beos*) gl_cv_func_printf_infinite="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_printf_infinite="guessing no";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports infinite and NaN -dnl 'long double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_printf_infinite_long_double. - -AC_DEFUN([gl_PRINTF_INFINITE_LONG_DOUBLE], -[ - AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([gl_BIGENDIAN]) - AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - dnl The user can set or unset the variable gl_printf_safe to indicate - dnl that he wishes a safe handling of non-IEEE-754 'long double' values. - if test -n "$gl_printf_safe"; then - AC_DEFINE([CHECK_PRINTF_SAFE], [1], - [Define if you wish *printf() functions that have a safe handling of - non-IEEE-754 'long double' values.]) - fi - case "$gl_cv_func_printf_long_double" in - *yes) - AC_CACHE_CHECK([whether printf supports infinite 'long double' arguments], - [gl_cv_func_printf_infinite_long_double], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -]GL_NOCRASH[ -#include <float.h> -#include <stdio.h> -#include <string.h> -static int -strisnan (const char *string, size_t start_index, size_t end_index) -{ - if (start_index < end_index) - { - if (string[start_index] == '-') - start_index++; - if (start_index + 3 <= end_index - && memcmp (string + start_index, "nan", 3) == 0) - { - start_index += 3; - if (start_index == end_index - || (string[start_index] == '(' && string[end_index - 1] == ')')) - return 1; - } - } - return 0; -} -static char buf[10000]; -static long double zeroL = 0.0L; -int main () -{ - int result = 0; - nocrash_init(); - if (sprintf (buf, "%Lf", 1.0L / zeroL) < 0 - || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) - result |= 1; - if (sprintf (buf, "%Lf", -1.0L / zeroL) < 0 - || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) - result |= 1; - if (sprintf (buf, "%Lf", zeroL / zeroL) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 1; - if (sprintf (buf, "%Le", 1.0L / zeroL) < 0 - || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) - result |= 1; - if (sprintf (buf, "%Le", -1.0L / zeroL) < 0 - || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) - result |= 1; - if (sprintf (buf, "%Le", zeroL / zeroL) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 1; - if (sprintf (buf, "%Lg", 1.0L / zeroL) < 0 - || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) - result |= 1; - if (sprintf (buf, "%Lg", -1.0L / zeroL) < 0 - || (strcmp (buf, "-inf") != 0 && strcmp (buf, "-infinity") != 0)) - result |= 1; - if (sprintf (buf, "%Lg", zeroL / zeroL) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 1; -#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_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE -/* Representation of an 80-bit 'long double' as an initializer for a sequence - of 'unsigned int' words. */ -# ifdef WORDS_BIGENDIAN -# define LDBL80_WORDS(exponent,manthi,mantlo) \ - { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \ - ((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16), \ - (unsigned int) (mantlo) << 16 \ - } -# else -# define LDBL80_WORDS(exponent,manthi,mantlo) \ - { mantlo, manthi, exponent } -# endif - { /* Quiet NaN. */ - static union { unsigned int word[4]; long double value; } x = - { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) }; - if (sprintf (buf, "%Lf", x.value) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 2; - if (sprintf (buf, "%Le", x.value) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 2; - if (sprintf (buf, "%Lg", x.value) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 2; - } - { - /* Signalling NaN. */ - static union { unsigned int word[4]; long double value; } x = - { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) }; - if (sprintf (buf, "%Lf", x.value) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 2; - if (sprintf (buf, "%Le", x.value) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 2; - if (sprintf (buf, "%Lg", x.value) < 0 - || !strisnan (buf, 0, strlen (buf))) - result |= 2; - } - { /* Pseudo-NaN. */ - static union { unsigned int word[4]; long double value; } x = - { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) }; - if (sprintf (buf, "%Lf", x.value) <= 0) - result |= 4; - if (sprintf (buf, "%Le", x.value) <= 0) - result |= 4; - if (sprintf (buf, "%Lg", x.value) <= 0) - result |= 4; - } - { /* Pseudo-Infinity. */ - static union { unsigned int word[4]; long double value; } x = - { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) }; - if (sprintf (buf, "%Lf", x.value) <= 0) - result |= 8; - if (sprintf (buf, "%Le", x.value) <= 0) - result |= 8; - if (sprintf (buf, "%Lg", x.value) <= 0) - result |= 8; - } - { /* Pseudo-Zero. */ - static union { unsigned int word[4]; long double value; } x = - { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) }; - if (sprintf (buf, "%Lf", x.value) <= 0) - result |= 16; - if (sprintf (buf, "%Le", x.value) <= 0) - result |= 16; - if (sprintf (buf, "%Lg", x.value) <= 0) - result |= 16; - } - { /* Unnormalized number. */ - static union { unsigned int word[4]; long double value; } x = - { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) }; - if (sprintf (buf, "%Lf", x.value) <= 0) - result |= 32; - if (sprintf (buf, "%Le", x.value) <= 0) - result |= 32; - if (sprintf (buf, "%Lg", x.value) <= 0) - result |= 32; - } - { /* Pseudo-Denormal. */ - static union { unsigned int word[4]; long double value; } x = - { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) }; - if (sprintf (buf, "%Lf", x.value) <= 0) - result |= 64; - if (sprintf (buf, "%Le", x.value) <= 0) - result |= 64; - if (sprintf (buf, "%Lg", x.value) <= 0) - result |= 64; - } -#endif - return result; -}]])], - [gl_cv_func_printf_infinite_long_double=yes], - [gl_cv_func_printf_infinite_long_double=no], - [ -changequote(,)dnl - case "$host_cpu" in - # Guess no on ia64, x86_64, i386. - ia64 | x86_64 | i*86) gl_cv_func_printf_infinite_long_double="guessing no";; - *) - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_printf_infinite_long_double="guessing yes";; - # Guess yes on FreeBSD >= 6. - freebsd[1-5].*) gl_cv_func_printf_infinite_long_double="guessing no";; - freebsd* | kfreebsd*) gl_cv_func_printf_infinite_long_double="guessing yes";; - # Guess yes on HP-UX >= 11. - hpux[7-9]* | hpux10*) gl_cv_func_printf_infinite_long_double="guessing no";; - hpux*) gl_cv_func_printf_infinite_long_double="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_printf_infinite_long_double="guessing no";; - esac - ;; - esac -changequote([,])dnl - ]) - ]) - ;; - *) - gl_cv_func_printf_infinite_long_double="irrelevant" - ;; - esac -]) - -dnl Test whether the *printf family of functions supports the 'a' and 'A' -dnl conversion specifier for hexadecimal output of floating-point numbers. -dnl (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_printf_directive_a. - -AC_DEFUN([gl_PRINTF_DIRECTIVE_A], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports the 'a' and 'A' directives], - [gl_cv_func_printf_directive_a], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -static char buf[100]; -static double zero = 0.0; -int main () -{ - int result = 0; - if (sprintf (buf, "%a %d", 3.1416015625, 33, 44, 55) < 0 - || (strcmp (buf, "0x1.922p+1 33") != 0 - && strcmp (buf, "0x3.244p+0 33") != 0 - && strcmp (buf, "0x6.488p-1 33") != 0 - && strcmp (buf, "0xc.91p-2 33") != 0)) - result |= 1; - if (sprintf (buf, "%A %d", -3.1416015625, 33, 44, 55) < 0 - || (strcmp (buf, "-0X1.922P+1 33") != 0 - && strcmp (buf, "-0X3.244P+0 33") != 0 - && strcmp (buf, "-0X6.488P-1 33") != 0 - && strcmp (buf, "-0XC.91P-2 33") != 0)) - result |= 2; - /* This catches a FreeBSD 6.1 bug: it doesn't round. */ - if (sprintf (buf, "%.2a %d", 1.51, 33, 44, 55) < 0 - || (strcmp (buf, "0x1.83p+0 33") != 0 - && strcmp (buf, "0x3.05p-1 33") != 0 - && strcmp (buf, "0x6.0ap-2 33") != 0 - && strcmp (buf, "0xc.14p-3 33") != 0)) - result |= 4; - /* This catches a FreeBSD 6.1 bug. See - <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */ - if (sprintf (buf, "%010a %d", 1.0 / zero, 33, 44, 55) < 0 - || buf[0] == '0') - result |= 8; - /* This catches a Mac OS X 10.3.9 (Darwin 7.9) bug. */ - if (sprintf (buf, "%.1a", 1.999) < 0 - || (strcmp (buf, "0x1.0p+1") != 0 - && strcmp (buf, "0x2.0p+0") != 0 - && strcmp (buf, "0x4.0p-1") != 0 - && strcmp (buf, "0x8.0p-2") != 0)) - result |= 16; - /* This catches the same Mac OS X 10.3.9 (Darwin 7.9) bug and also a - glibc 2.4 bug <http://sourceware.org/bugzilla/show_bug.cgi?id=2908>. */ - if (sprintf (buf, "%.1La", 1.999L) < 0 - || (strcmp (buf, "0x1.0p+1") != 0 - && strcmp (buf, "0x2.0p+0") != 0 - && strcmp (buf, "0x4.0p-1") != 0 - && strcmp (buf, "0x8.0p-2") != 0)) - result |= 32; - return result; -}]])], - [gl_cv_func_printf_directive_a=yes], - [gl_cv_func_printf_directive_a=no], - [ - case "$host_os" in - # Guess yes on glibc >= 2.5 systems. - *-gnu*) - AC_EGREP_CPP([BZ2908], [ - #include <features.h> - #ifdef __GNU_LIBRARY__ - #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 5) || (__GLIBC__ > 2)) && !defined __UCLIBC__ - BZ2908 - #endif - #endif - ], - [gl_cv_func_printf_directive_a="guessing yes"], - [gl_cv_func_printf_directive_a="guessing no"]) - ;; - # If we don't know, assume the worst. - *) gl_cv_func_printf_directive_a="guessing no";; - esac - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports the %F format -dnl directive. (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_printf_directive_f. - -AC_DEFUN([gl_PRINTF_DIRECTIVE_F], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports the 'F' directive], - [gl_cv_func_printf_directive_f], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -static char buf[100]; -static double zero = 0.0; -int main () -{ - int result = 0; - if (sprintf (buf, "%F %d", 1234567.0, 33, 44, 55) < 0 - || strcmp (buf, "1234567.000000 33") != 0) - result |= 1; - if (sprintf (buf, "%F", 1.0 / zero) < 0 - || (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0)) - result |= 2; - /* This catches a Cygwin 1.5.x bug. */ - if (sprintf (buf, "%.F", 1234.0) < 0 - || strcmp (buf, "1234") != 0) - result |= 4; - return result; -}]])], - [gl_cv_func_printf_directive_f=yes], - [gl_cv_func_printf_directive_f=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_printf_directive_f="guessing yes";; - # Guess yes on FreeBSD >= 6. - freebsd[1-5].*) gl_cv_func_printf_directive_f="guessing no";; - freebsd* | kfreebsd*) gl_cv_func_printf_directive_f="guessing yes";; - # Guess yes on Mac OS X >= 10.3. - darwin[1-6].*) gl_cv_func_printf_directive_f="guessing no";; - darwin*) gl_cv_func_printf_directive_f="guessing yes";; - # Guess yes on Solaris >= 2.10. - solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";; - solaris*) gl_cv_func_printf_sizes_c99="guessing no";; - # If we don't know, assume the worst. - *) gl_cv_func_printf_directive_f="guessing no";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports the %n format -dnl directive. (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_printf_directive_n. - -AC_DEFUN([gl_PRINTF_DIRECTIVE_N], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports the 'n' directive], - [gl_cv_func_printf_directive_n], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#ifdef _MSC_VER -/* See page about "Parameter Validation" on msdn.microsoft.com. */ -static void cdecl -invalid_parameter_handler (const wchar_t *expression, - const wchar_t *function, - const wchar_t *file, unsigned int line, - uintptr_t dummy) -{ - exit (1); -} -#endif -static char fmtstring[10]; -static char buf[100]; -int main () -{ - int count = -1; -#ifdef _MSC_VER - _set_invalid_parameter_handler (invalid_parameter_handler); -#endif - /* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2) - support %n in format strings in read-only memory but not in writable - memory. */ - strcpy (fmtstring, "%d %n"); - if (sprintf (buf, fmtstring, 123, &count, 33, 44, 55) < 0 - || strcmp (buf, "123 ") != 0 - || count != 4) - return 1; - return 0; -}]])], - [gl_cv_func_printf_directive_n=yes], - [gl_cv_func_printf_directive_n=no], - [ -changequote(,)dnl - case "$host_os" in - mingw*) gl_cv_func_printf_directive_n="guessing no";; - *) gl_cv_func_printf_directive_n="guessing yes";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports the %ls format -dnl directive and in particular, when a precision is specified, whether -dnl the functions stop converting the wide string argument when the number -dnl of bytes that have been produced by this conversion equals or exceeds -dnl the precision. -dnl Result is gl_cv_func_printf_directive_ls. - -AC_DEFUN([gl_PRINTF_DIRECTIVE_LS], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports the 'ls' directive], - [gl_cv_func_printf_directive_ls], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before - <wchar.h>. - BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be - included before <wchar.h>. */ -#include <stddef.h> -#include <stdio.h> -#include <time.h> -#include <wchar.h> -#include <string.h> -int main () -{ - int result = 0; - char buf[100]; - /* Test whether %ls works at all. - This test fails on OpenBSD 4.0, IRIX 6.5, Solaris 2.6, Haiku, but not on - Cygwin 1.5. */ - { - static const wchar_t wstring[] = { 'a', 'b', 'c', 0 }; - buf[0] = '\0'; - if (sprintf (buf, "%ls", wstring) < 0 - || strcmp (buf, "abc") != 0) - result |= 1; - } - /* This test fails on IRIX 6.5, Solaris 2.6, Cygwin 1.5, Haiku (with an - assertion failure inside libc), but not on OpenBSD 4.0. */ - { - static const wchar_t wstring[] = { 'a', 0 }; - buf[0] = '\0'; - if (sprintf (buf, "%ls", wstring) < 0 - || strcmp (buf, "a") != 0) - result |= 2; - } - /* Test whether precisions in %ls are supported as specified in ISO C 99 - section 7.19.6.1: - "If a precision is specified, no more than that many bytes are written - (including shift sequences, if any), and the array shall contain a - null wide character if, to equal the multibyte character sequence - length given by the precision, the function would need to access a - wide character one past the end of the array." - This test fails on Solaris 10. */ - { - static const wchar_t wstring[] = { 'a', 'b', (wchar_t) 0xfdfdfdfd, 0 }; - buf[0] = '\0'; - if (sprintf (buf, "%.2ls", wstring) < 0 - || strcmp (buf, "ab") != 0) - result |= 8; - } - return result; -}]])], - [gl_cv_func_printf_directive_ls=yes], - [gl_cv_func_printf_directive_ls=no], - [ -changequote(,)dnl - case "$host_os" in - openbsd*) gl_cv_func_printf_directive_ls="guessing no";; - irix*) gl_cv_func_printf_directive_ls="guessing no";; - solaris*) gl_cv_func_printf_directive_ls="guessing no";; - cygwin*) gl_cv_func_printf_directive_ls="guessing no";; - beos* | haiku*) gl_cv_func_printf_directive_ls="guessing no";; - *) gl_cv_func_printf_directive_ls="guessing yes";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports POSIX/XSI format -dnl strings with positions. (POSIX:2001) -dnl Result is gl_cv_func_printf_positions. - -AC_DEFUN([gl_PRINTF_POSITIONS], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports POSIX/XSI format strings with positions], - [gl_cv_func_printf_positions], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -/* The string "%2$d %1$d", with dollar characters protected from the shell's - dollar expansion (possibly an autoconf bug). */ -static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' }; -static char buf[100]; -int main () -{ - sprintf (buf, format, 33, 55); - return (strcmp (buf, "55 33") != 0); -}]])], - [gl_cv_func_printf_positions=yes], - [gl_cv_func_printf_positions=no], - [ -changequote(,)dnl - case "$host_os" in - netbsd[1-3]* | netbsdelf[1-3]* | netbsdaout[1-3]* | netbsdcoff[1-3]*) - gl_cv_func_printf_positions="guessing no";; - beos*) gl_cv_func_printf_positions="guessing no";; - mingw* | pw*) gl_cv_func_printf_positions="guessing no";; - *) gl_cv_func_printf_positions="guessing yes";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports POSIX/XSI format -dnl strings with the ' flag for grouping of decimal digits. (POSIX:2001) -dnl Result is gl_cv_func_printf_flag_grouping. - -AC_DEFUN([gl_PRINTF_FLAG_GROUPING], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports the grouping flag], - [gl_cv_func_printf_flag_grouping], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -static char buf[100]; -int main () -{ - if (sprintf (buf, "%'d %d", 1234567, 99) < 0 - || buf[strlen (buf) - 1] != '9') - return 1; - return 0; -}]])], - [gl_cv_func_printf_flag_grouping=yes], - [gl_cv_func_printf_flag_grouping=no], - [ -changequote(,)dnl - case "$host_os" in - cygwin*) gl_cv_func_printf_flag_grouping="guessing no";; - netbsd*) gl_cv_func_printf_flag_grouping="guessing no";; - mingw* | pw*) gl_cv_func_printf_flag_grouping="guessing no";; - *) gl_cv_func_printf_flag_grouping="guessing yes";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports the - flag correctly. -dnl (ISO C99.) See -dnl <http://lists.gnu.org/archive/html/bug-coreutils/2008-02/msg00035.html> -dnl Result is gl_cv_func_printf_flag_leftadjust. - -AC_DEFUN([gl_PRINTF_FLAG_LEFTADJUST], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports the left-adjust flag correctly], - [gl_cv_func_printf_flag_leftadjust], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -static char buf[100]; -int main () -{ - /* Check that a '-' flag is not annihilated by a negative width. */ - if (sprintf (buf, "a%-*sc", -3, "b") < 0 - || strcmp (buf, "ab c") != 0) - return 1; - return 0; -}]])], - [gl_cv_func_printf_flag_leftadjust=yes], - [gl_cv_func_printf_flag_leftadjust=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on HP-UX 11. - hpux11*) gl_cv_func_printf_flag_leftadjust="guessing yes";; - # Guess no on HP-UX 10 and older. - hpux*) gl_cv_func_printf_flag_leftadjust="guessing no";; - # Guess yes otherwise. - *) gl_cv_func_printf_flag_leftadjust="guessing yes";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports padding of non-finite -dnl values with the 0 flag correctly. (ISO C99 + TC1 + TC2.) See -dnl <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> -dnl Result is gl_cv_func_printf_flag_zero. - -AC_DEFUN([gl_PRINTF_FLAG_ZERO], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports the zero flag correctly], - [gl_cv_func_printf_flag_zero], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -static char buf[100]; -static double zero = 0.0; -int main () -{ - if (sprintf (buf, "%010f", 1.0 / zero, 33, 44, 55) < 0 - || (strcmp (buf, " inf") != 0 - && strcmp (buf, " infinity") != 0)) - return 1; - return 0; -}]])], - [gl_cv_func_printf_flag_zero=yes], - [gl_cv_func_printf_flag_zero=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_printf_flag_zero="guessing yes";; - # Guess yes on BeOS. - beos*) gl_cv_func_printf_flag_zero="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_printf_flag_zero="guessing no";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions supports large precisions. -dnl On mingw, precisions larger than 512 are treated like 512, in integer, -dnl floating-point or pointer output. On Solaris 10/x86, precisions larger -dnl than 510 in floating-point output crash the program. On Solaris 10/SPARC, -dnl precisions larger than 510 in floating-point output yield wrong results. -dnl On AIX 7.1, precisions larger than 998 in floating-point output yield -dnl wrong results. On BeOS, precisions larger than 1044 crash the program. -dnl Result is gl_cv_func_printf_precision. - -AC_DEFUN([gl_PRINTF_PRECISION], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf supports large precisions], - [gl_cv_func_printf_precision], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -static char buf[5000]; -int main () -{ - int result = 0; -#ifdef __BEOS__ - /* On BeOS, this would crash and show a dialog box. Avoid the crash. */ - return 1; -#endif - if (sprintf (buf, "%.4000d %d", 1, 33, 44) < 4000 + 3) - result |= 1; - if (sprintf (buf, "%.4000f %d", 1.0, 33, 44) < 4000 + 5) - result |= 2; - if (sprintf (buf, "%.511f %d", 1.0, 33, 44) < 511 + 5 - || buf[0] != '1') - result |= 4; - if (sprintf (buf, "%.999f %d", 1.0, 33, 44) < 999 + 5 - || buf[0] != '1') - result |= 4; - return result; -}]])], - [gl_cv_func_printf_precision=yes], - [gl_cv_func_printf_precision=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess no only on Solaris, native Windows, and BeOS systems. - solaris*) gl_cv_func_printf_precision="guessing no" ;; - mingw* | pw*) gl_cv_func_printf_precision="guessing no" ;; - beos*) gl_cv_func_printf_precision="guessing no" ;; - *) gl_cv_func_printf_precision="guessing yes" ;; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the *printf family of functions recovers gracefully in case -dnl of an out-of-memory condition, or whether it crashes the entire program. -dnl Result is gl_cv_func_printf_enomem. - -AC_DEFUN([gl_PRINTF_ENOMEM], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([gl_MULTIARCH]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether printf survives out-of-memory conditions], - [gl_cv_func_printf_enomem], - [ - gl_cv_func_printf_enomem="guessing no" - if test "$cross_compiling" = no; then - if test $APPLE_UNIVERSAL_BUILD = 0; then - AC_LANG_CONFTEST([AC_LANG_SOURCE([ -]GL_NOCRASH[ -changequote(,)dnl -#include <stdio.h> -#include <sys/types.h> -#include <sys/time.h> -#include <sys/resource.h> -#include <errno.h> -int main() -{ - struct rlimit limit; - int ret; - nocrash_init (); - /* Some printf implementations allocate temporary space with malloc. */ - /* On BSD systems, malloc() is limited by RLIMIT_DATA. */ -#ifdef RLIMIT_DATA - if (getrlimit (RLIMIT_DATA, &limit) < 0) - return 77; - if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) - limit.rlim_max = 5000000; - limit.rlim_cur = limit.rlim_max; - if (setrlimit (RLIMIT_DATA, &limit) < 0) - return 77; -#endif - /* On Linux systems, malloc() is limited by RLIMIT_AS. */ -#ifdef RLIMIT_AS - if (getrlimit (RLIMIT_AS, &limit) < 0) - return 77; - if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) - limit.rlim_max = 5000000; - limit.rlim_cur = limit.rlim_max; - if (setrlimit (RLIMIT_AS, &limit) < 0) - return 77; -#endif - /* Some printf implementations allocate temporary space on the stack. */ -#ifdef RLIMIT_STACK - if (getrlimit (RLIMIT_STACK, &limit) < 0) - return 77; - if (limit.rlim_max == RLIM_INFINITY || limit.rlim_max > 5000000) - limit.rlim_max = 5000000; - limit.rlim_cur = limit.rlim_max; - if (setrlimit (RLIMIT_STACK, &limit) < 0) - return 77; -#endif - ret = printf ("%.5000000f", 1.0); - return !(ret == 5000002 || (ret < 0 && errno == ENOMEM)); -} -changequote([,])dnl - ])]) - if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then - (./conftest 2>&AS_MESSAGE_LOG_FD - result=$? - _AS_ECHO_LOG([\$? = $result]) - if test $result != 0 && test $result != 77; then result=1; fi - exit $result - ) >/dev/null 2>/dev/null - case $? in - 0) gl_cv_func_printf_enomem="yes" ;; - 77) gl_cv_func_printf_enomem="guessing no" ;; - *) gl_cv_func_printf_enomem="no" ;; - esac - else - gl_cv_func_printf_enomem="guessing no" - fi - rm -fr conftest* - else - dnl A universal build on Apple Mac OS X platforms. - dnl The result would be 'no' in 32-bit mode and 'yes' in 64-bit mode. - dnl But we need a configuration result that is valid in both modes. - gl_cv_func_printf_enomem="guessing no" - fi - fi - if test "$gl_cv_func_printf_enomem" = "guessing no"; then -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_printf_enomem="guessing yes";; - # Guess yes on Solaris. - solaris*) gl_cv_func_printf_enomem="guessing yes";; - # Guess yes on AIX. - aix*) gl_cv_func_printf_enomem="guessing yes";; - # Guess yes on HP-UX/hppa. - hpux*) case "$host_cpu" in - hppa*) gl_cv_func_printf_enomem="guessing yes";; - *) gl_cv_func_printf_enomem="guessing no";; - esac - ;; - # Guess yes on IRIX. - irix*) gl_cv_func_printf_enomem="guessing yes";; - # Guess yes on OSF/1. - osf*) gl_cv_func_printf_enomem="guessing yes";; - # Guess yes on BeOS. - beos*) gl_cv_func_printf_enomem="guessing yes";; - # Guess yes on Haiku. - haiku*) gl_cv_func_printf_enomem="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_printf_enomem="guessing no";; - esac -changequote([,])dnl - fi - ]) -]) - -dnl Test whether the snprintf function exists. (ISO C99, POSIX:2001) -dnl Result is ac_cv_func_snprintf. - -AC_DEFUN([gl_SNPRINTF_PRESENCE], -[ - AC_CHECK_FUNCS_ONCE([snprintf]) -]) - -dnl Test whether the string produced by the snprintf function is always NUL -dnl terminated. (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_snprintf_truncation_c99. - -AC_DEFUN([gl_SNPRINTF_TRUNCATION_C99], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_REQUIRE([gl_SNPRINTF_PRESENCE]) - AC_CACHE_CHECK([whether snprintf truncates the result as in C99], - [gl_cv_func_snprintf_truncation_c99], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -#if HAVE_SNPRINTF -# define my_snprintf snprintf -#else -# include <stdarg.h> -static int my_snprintf (char *buf, int size, const char *format, ...) -{ - va_list args; - int ret; - va_start (args, format); - ret = vsnprintf (buf, size, format, args); - va_end (args); - return ret; -} -#endif -static char buf[100]; -int main () -{ - strcpy (buf, "ABCDEF"); - my_snprintf (buf, 3, "%d %d", 4567, 89); - if (memcmp (buf, "45\0DEF", 6) != 0) - return 1; - return 0; -}]])], - [gl_cv_func_snprintf_truncation_c99=yes], - [gl_cv_func_snprintf_truncation_c99=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on FreeBSD >= 5. - freebsd[1-4].*) gl_cv_func_snprintf_truncation_c99="guessing no";; - freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on Mac OS X >= 10.3. - darwin[1-6].*) gl_cv_func_snprintf_truncation_c99="guessing no";; - darwin*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on OpenBSD >= 3.9. - openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) - gl_cv_func_snprintf_truncation_c99="guessing no";; - openbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on Solaris >= 2.6. - solaris2.[0-5] | solaris2.[0-5].*) - gl_cv_func_snprintf_truncation_c99="guessing no";; - solaris*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on AIX >= 4. - aix[1-3]*) gl_cv_func_snprintf_truncation_c99="guessing no";; - aix*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on HP-UX >= 11. - hpux[7-9]* | hpux10*) gl_cv_func_snprintf_truncation_c99="guessing no";; - hpux*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on IRIX >= 6.5. - irix6.5) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on OSF/1 >= 5. - osf[3-4]*) gl_cv_func_snprintf_truncation_c99="guessing no";; - osf*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on NetBSD >= 3. - netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) - gl_cv_func_snprintf_truncation_c99="guessing no";; - netbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # Guess yes on BeOS. - beos*) gl_cv_func_snprintf_truncation_c99="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_snprintf_truncation_c99="guessing no";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the return value of the snprintf function is the number -dnl of bytes (excluding the terminating NUL) that would have been produced -dnl if the buffer had been large enough. (ISO C99, POSIX:2001) -dnl For example, this test program fails on IRIX 6.5: -dnl --------------------------------------------------------------------- -dnl #include <stdio.h> -dnl int main() -dnl { -dnl static char buf[8]; -dnl int retval = snprintf (buf, 3, "%d", 12345); -dnl return retval >= 0 && retval < 3; -dnl } -dnl --------------------------------------------------------------------- -dnl Result is gl_cv_func_snprintf_retval_c99. - -AC_DEFUN_ONCE([gl_SNPRINTF_RETVAL_C99], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_REQUIRE([gl_SNPRINTF_PRESENCE]) - AC_CACHE_CHECK([whether snprintf returns a byte count as in C99], - [gl_cv_func_snprintf_retval_c99], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -#if HAVE_SNPRINTF -# define my_snprintf snprintf -#else -# include <stdarg.h> -static int my_snprintf (char *buf, int size, const char *format, ...) -{ - va_list args; - int ret; - va_start (args, format); - ret = vsnprintf (buf, size, format, args); - va_end (args); - return ret; -} -#endif -static char buf[100]; -int main () -{ - strcpy (buf, "ABCDEF"); - if (my_snprintf (buf, 3, "%d %d", 4567, 89) != 7) - return 1; - if (my_snprintf (buf, 0, "%d %d", 4567, 89) != 7) - return 2; - if (my_snprintf (NULL, 0, "%d %d", 4567, 89) != 7) - return 3; - return 0; -}]])], - [gl_cv_func_snprintf_retval_c99=yes], - [gl_cv_func_snprintf_retval_c99=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_snprintf_retval_c99="guessing yes";; - # Guess yes on FreeBSD >= 5. - freebsd[1-4].*) gl_cv_func_snprintf_retval_c99="guessing no";; - freebsd* | kfreebsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; - # Guess yes on Mac OS X >= 10.3. - darwin[1-6].*) gl_cv_func_snprintf_retval_c99="guessing no";; - darwin*) gl_cv_func_snprintf_retval_c99="guessing yes";; - # Guess yes on OpenBSD >= 3.9. - openbsd[1-2].* | openbsd3.[0-8] | openbsd3.[0-8].*) - gl_cv_func_snprintf_retval_c99="guessing no";; - openbsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; - # Guess yes on Solaris >= 2.10. - solaris2.[1-9][0-9]*) gl_cv_func_printf_sizes_c99="guessing yes";; - solaris*) gl_cv_func_printf_sizes_c99="guessing no";; - # Guess yes on AIX >= 4. - aix[1-3]*) gl_cv_func_snprintf_retval_c99="guessing no";; - aix*) gl_cv_func_snprintf_retval_c99="guessing yes";; - # Guess yes on NetBSD >= 3. - netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) - gl_cv_func_snprintf_retval_c99="guessing no";; - netbsd*) gl_cv_func_snprintf_retval_c99="guessing yes";; - # Guess yes on BeOS. - beos*) gl_cv_func_snprintf_retval_c99="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_snprintf_retval_c99="guessing no";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the snprintf function supports the %n format directive -dnl also in truncated portions of the format string. (ISO C99, POSIX:2001) -dnl Result is gl_cv_func_snprintf_directive_n. - -AC_DEFUN([gl_SNPRINTF_DIRECTIVE_N], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_REQUIRE([gl_SNPRINTF_PRESENCE]) - AC_CACHE_CHECK([whether snprintf fully supports the 'n' directive], - [gl_cv_func_snprintf_directive_n], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#include <string.h> -#if HAVE_SNPRINTF -# define my_snprintf snprintf -#else -# include <stdarg.h> -static int my_snprintf (char *buf, int size, const char *format, ...) -{ - va_list args; - int ret; - va_start (args, format); - ret = vsnprintf (buf, size, format, args); - va_end (args); - return ret; -} -#endif -static char fmtstring[10]; -static char buf[100]; -int main () -{ - int count = -1; - /* Copy the format string. Some systems (glibc with _FORTIFY_SOURCE=2) - support %n in format strings in read-only memory but not in writable - memory. */ - strcpy (fmtstring, "%d %n"); - my_snprintf (buf, 4, fmtstring, 12345, &count, 33, 44, 55); - if (count != 6) - return 1; - return 0; -}]])], - [gl_cv_func_snprintf_directive_n=yes], - [gl_cv_func_snprintf_directive_n=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_snprintf_directive_n="guessing yes";; - # Guess yes on FreeBSD >= 5. - freebsd[1-4].*) gl_cv_func_snprintf_directive_n="guessing no";; - freebsd* | kfreebsd*) gl_cv_func_snprintf_directive_n="guessing yes";; - # Guess yes on Mac OS X >= 10.3. - darwin[1-6].*) gl_cv_func_snprintf_directive_n="guessing no";; - darwin*) gl_cv_func_snprintf_directive_n="guessing yes";; - # Guess yes on Solaris >= 2.6. - solaris2.[0-5] | solaris2.[0-5].*) - gl_cv_func_snprintf_directive_n="guessing no";; - solaris*) gl_cv_func_snprintf_directive_n="guessing yes";; - # Guess yes on AIX >= 4. - aix[1-3]*) gl_cv_func_snprintf_directive_n="guessing no";; - aix*) gl_cv_func_snprintf_directive_n="guessing yes";; - # Guess yes on IRIX >= 6.5. - irix6.5) gl_cv_func_snprintf_directive_n="guessing yes";; - # Guess yes on OSF/1 >= 5. - osf[3-4]*) gl_cv_func_snprintf_directive_n="guessing no";; - osf*) gl_cv_func_snprintf_directive_n="guessing yes";; - # Guess yes on NetBSD >= 3. - netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) - gl_cv_func_snprintf_directive_n="guessing no";; - netbsd*) gl_cv_func_snprintf_directive_n="guessing yes";; - # Guess yes on BeOS. - beos*) gl_cv_func_snprintf_directive_n="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_snprintf_directive_n="guessing no";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl Test whether the snprintf function, when passed a size = 1, writes any -dnl output without bounds in this case, behaving like sprintf. This is the -dnl case on Linux libc5. -dnl Result is gl_cv_func_snprintf_size1. - -AC_DEFUN([gl_SNPRINTF_SIZE1], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([gl_SNPRINTF_PRESENCE]) - AC_CACHE_CHECK([whether snprintf respects a size of 1], - [gl_cv_func_snprintf_size1], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdio.h> -#if HAVE_SNPRINTF -# define my_snprintf snprintf -#else -# include <stdarg.h> -static int my_snprintf (char *buf, int size, const char *format, ...) -{ - va_list args; - int ret; - va_start (args, format); - ret = vsnprintf (buf, size, format, args); - va_end (args); - return ret; -} -#endif -int main() -{ - static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; - my_snprintf (buf, 1, "%d", 12345); - return buf[1] != 'E'; -}]])], - [gl_cv_func_snprintf_size1=yes], - [gl_cv_func_snprintf_size1=no], - [gl_cv_func_snprintf_size1="guessing yes"]) - ]) -]) - -dnl Test whether the vsnprintf function, when passed a zero size, produces no -dnl output. (ISO C99, POSIX:2001) -dnl For example, snprintf nevertheless writes a NUL byte in this case -dnl on OSF/1 5.1: -dnl --------------------------------------------------------------------- -dnl #include <stdio.h> -dnl int main() -dnl { -dnl static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; -dnl snprintf (buf, 0, "%d", 12345); -dnl return buf[0] != 'D'; -dnl } -dnl --------------------------------------------------------------------- -dnl And vsnprintf writes any output without bounds in this case, behaving like -dnl vsprintf, on HP-UX 11 and OSF/1 5.1: -dnl --------------------------------------------------------------------- -dnl #include <stdarg.h> -dnl #include <stdio.h> -dnl static int my_snprintf (char *buf, int size, const char *format, ...) -dnl { -dnl va_list args; -dnl int ret; -dnl va_start (args, format); -dnl ret = vsnprintf (buf, size, format, args); -dnl va_end (args); -dnl return ret; -dnl } -dnl int main() -dnl { -dnl static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; -dnl my_snprintf (buf, 0, "%d", 12345); -dnl return buf[0] != 'D'; -dnl } -dnl --------------------------------------------------------------------- -dnl Result is gl_cv_func_vsnprintf_zerosize_c99. - -AC_DEFUN([gl_VSNPRINTF_ZEROSIZE_C99], -[ - AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles - AC_CACHE_CHECK([whether vsnprintf respects a zero size as in C99], - [gl_cv_func_vsnprintf_zerosize_c99], - [ - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <stdarg.h> -#include <stdio.h> -static int my_snprintf (char *buf, int size, const char *format, ...) -{ - va_list args; - int ret; - va_start (args, format); - ret = vsnprintf (buf, size, format, args); - va_end (args); - return ret; -} -int main() -{ - static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; - my_snprintf (buf, 0, "%d", 12345); - return buf[0] != 'D'; -}]])], - [gl_cv_func_vsnprintf_zerosize_c99=yes], - [gl_cv_func_vsnprintf_zerosize_c99=no], - [ -changequote(,)dnl - case "$host_os" in - # Guess yes on glibc systems. - *-gnu*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on FreeBSD >= 5. - freebsd[1-4].*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; - freebsd* | kfreebsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on Mac OS X >= 10.3. - darwin[1-6].*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; - darwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on Cygwin. - cygwin*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on Solaris >= 2.6. - solaris2.[0-5] | solaris2.[0-5].*) - gl_cv_func_vsnprintf_zerosize_c99="guessing no";; - solaris*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on AIX >= 4. - aix[1-3]*) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; - aix*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on IRIX >= 6.5. - irix6.5) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on NetBSD >= 3. - netbsd[1-2]* | netbsdelf[1-2]* | netbsdaout[1-2]* | netbsdcoff[1-2]*) - gl_cv_func_vsnprintf_zerosize_c99="guessing no";; - netbsd*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on BeOS. - beos*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on mingw. - mingw* | pw*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # If we don't know, assume the worst. - *) gl_cv_func_vsnprintf_zerosize_c99="guessing no";; - esac -changequote([,])dnl - ]) - ]) -]) - -dnl The results of these tests on various platforms are: -dnl -dnl 1 = gl_PRINTF_SIZES_C99 -dnl 2 = gl_PRINTF_LONG_DOUBLE -dnl 3 = gl_PRINTF_INFINITE -dnl 4 = gl_PRINTF_INFINITE_LONG_DOUBLE -dnl 5 = gl_PRINTF_DIRECTIVE_A -dnl 6 = gl_PRINTF_DIRECTIVE_F -dnl 7 = gl_PRINTF_DIRECTIVE_N -dnl 8 = gl_PRINTF_DIRECTIVE_LS -dnl 9 = gl_PRINTF_POSITIONS -dnl 10 = gl_PRINTF_FLAG_GROUPING -dnl 11 = gl_PRINTF_FLAG_LEFTADJUST -dnl 12 = gl_PRINTF_FLAG_ZERO -dnl 13 = gl_PRINTF_PRECISION -dnl 14 = gl_PRINTF_ENOMEM -dnl 15 = gl_SNPRINTF_PRESENCE -dnl 16 = gl_SNPRINTF_TRUNCATION_C99 -dnl 17 = gl_SNPRINTF_RETVAL_C99 -dnl 18 = gl_SNPRINTF_DIRECTIVE_N -dnl 19 = gl_SNPRINTF_SIZE1 -dnl 20 = gl_VSNPRINTF_ZEROSIZE_C99 -dnl -dnl 1 = checking whether printf supports size specifiers as in C99... -dnl 2 = checking whether printf supports 'long double' arguments... -dnl 3 = checking whether printf supports infinite 'double' arguments... -dnl 4 = checking whether printf supports infinite 'long double' arguments... -dnl 5 = checking whether printf supports the 'a' and 'A' directives... -dnl 6 = checking whether printf supports the 'F' directive... -dnl 7 = checking whether printf supports the 'n' directive... -dnl 8 = checking whether printf supports the 'ls' directive... -dnl 9 = checking whether printf supports POSIX/XSI format strings with positions... -dnl 10 = checking whether printf supports the grouping flag... -dnl 11 = checking whether printf supports the left-adjust flag correctly... -dnl 12 = checking whether printf supports the zero flag correctly... -dnl 13 = checking whether printf supports large precisions... -dnl 14 = checking whether printf survives out-of-memory conditions... -dnl 15 = checking for snprintf... -dnl 16 = checking whether snprintf truncates the result as in C99... -dnl 17 = checking whether snprintf returns a byte count as in C99... -dnl 18 = checking whether snprintf fully supports the 'n' directive... -dnl 19 = checking whether snprintf respects a size of 1... -dnl 20 = checking whether vsnprintf respects a zero size as in C99... -dnl -dnl . = yes, # = no. -dnl -dnl 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 -dnl glibc 2.5 . . . . . . . . . . . . . . . . . . . . -dnl glibc 2.3.6 . . . . # . . . . . . . . . . . . . . . -dnl FreeBSD 5.4, 6.1 . . . . # . . . . . . # . # . . . . . . -dnl Mac OS X 10.5.8 . . . # # . . . . . . # . . . . . . . . -dnl Mac OS X 10.3.9 . . . . # . . . . . . # . # . . . . . . -dnl OpenBSD 3.9, 4.0 . . # # # # . # . # . # . # . . . . . . -dnl Cygwin 1.7.0 (2009) . . . # . . . ? . . . . . ? . . . . . . -dnl Cygwin 1.5.25 (2008) . . . # # . . # . . . . . # . . . . . . -dnl Cygwin 1.5.19 (2006) # . . # # # . # . # . # # # . . . . . . -dnl Solaris 11 2011-11 . . # # # . . # . . . # . . . . . . . . -dnl Solaris 10 . . # # # . . # . . . # # . . . . . . . -dnl Solaris 2.6 ... 9 # . # # # # . # . . . # # . . . # . . . -dnl Solaris 2.5.1 # . # # # # . # . . . # . . # # # # # # -dnl AIX 7.1 . . # # # . . . . . . # # . . . . . . . -dnl AIX 5.2 . . # # # . . . . . . # . . . . . . . . -dnl AIX 4.3.2, 5.1 # . # # # # . . . . . # . . . . # . . . -dnl HP-UX 11.31 . . . . # . . . . . . # . . . . # # . . -dnl HP-UX 11.{00,11,23} # . . . # # . . . . . # . . . . # # . # -dnl HP-UX 10.20 # . # . # # . ? . . # # . . . . # # ? # -dnl IRIX 6.5 # . # # # # . # . . . # . . . . # . . . -dnl OSF/1 5.1 # . # # # # . . . . . # . . . . # . . # -dnl OSF/1 4.0d # . # # # # . . . . . # . . # # # # # # -dnl NetBSD 5.0 . . . # # . . . . . . # . # . . . . . . -dnl NetBSD 4.0 . ? ? ? ? ? . ? . ? ? ? ? ? . . . ? ? ? -dnl NetBSD 3.0 . . . . # # . ? # # ? # . # . . . . . . -dnl Haiku . . . # # # . # . . . . . ? . . ? . . . -dnl BeOS # # . # # # . ? # . ? . # ? . . ? . . . -dnl old mingw / msvcrt # # # # # # . . # # . # # ? . # # # . . -dnl MSVC 9 # # # # # # # . # # . # # ? # # # # . . -dnl mingw 2009-2011 . # . # . . . . # # . . . ? . . . . . . -dnl mingw-w64 2011 # # # # # # . . # # . # # ? . # # # . . |