diff options
Diffstat (limited to 'gl/m4/printf.m4')
| -rw-r--r-- | gl/m4/printf.m4 | 206 |
1 files changed, 150 insertions, 56 deletions
diff --git a/gl/m4/printf.m4 b/gl/m4/printf.m4 index 4d109935..87aa45c5 100644 --- a/gl/m4/printf.m4 +++ b/gl/m4/printf.m4 @@ -1,4 +1,4 @@ -# printf.m4 serial 26 +# printf.m4 serial 33 dnl Copyright (C) 2003, 2007-2009 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -125,7 +125,8 @@ changequote([,])dnl ]) dnl Test whether the *printf family of functions supports infinite and NaN -dnl 'double' arguments in the %f, %e, %g directives. (ISO C99, POSIX:2001) +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], @@ -156,6 +157,13 @@ strisnan (const char *string, size_t start_index, size_t end_index) } 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 () @@ -187,6 +195,11 @@ int main () if (sprintf (buf, "%g", zero / zero) < 0 || !strisnan (buf, 0, strlen (buf))) return 1; + /* This test fails on HP-UX 10.20. */ + if (have_minus_zero ()) + if (sprintf (buf, "%g", - zero) < 0 + || strcmp (buf, "-0") != 0) + return 1; return 0; }], [gl_cv_func_printf_infinite=yes], [gl_cv_func_printf_infinite=no], [ @@ -225,7 +238,7 @@ AC_DEFUN([gl_PRINTF_INFINITE_LONG_DOUBLE], [ AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) AC_REQUIRE([AC_PROG_CC]) - AC_REQUIRE([AC_C_BIGENDIAN]) + AC_REQUIRE([gl_BIGENDIAN]) 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. @@ -545,7 +558,7 @@ int main () if (sprintf (buf, "%F", 1.0 / 0.0) < 0 || (strcmp (buf, "INF") != 0 && strcmp (buf, "INFINITY") != 0)) return 1; - /* This catches a Cygwin 2007 bug. */ + /* This catches a Cygwin 1.5.x bug. */ if (sprintf (buf, "%.F", 1234.0) < 0 || strcmp (buf, "1234") != 0) return 1; @@ -612,6 +625,84 @@ 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_TRY_RUN([ +/* 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 () +{ + 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) + return 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) + return 1; + } + /* 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) + return 1; + } + return 0; +}], [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. @@ -1142,7 +1233,7 @@ AC_DEFUN([gl_SNPRINTF_SIZE1], #include <stdio.h> int main() { - static char buf[8] = "DEADBEEF"; + static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; snprintf (buf, 1, "%d", 12345); return buf[1] != 'E'; }], @@ -1160,7 +1251,7 @@ dnl --------------------------------------------------------------------- dnl #include <stdio.h> dnl int main() dnl { -dnl static char buf[8] = "DEADBEEF"; +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 } @@ -1181,7 +1272,7 @@ dnl return ret; dnl } dnl int main() dnl { -dnl static char buf[8] = "DEADBEEF"; +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 } @@ -1209,7 +1300,7 @@ static int my_snprintf (char *buf, int size, const char *format, ...) } int main() { - static char buf[8] = "DEADBEEF"; + static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' }; my_snprintf (buf, 0, "%d", 12345); return buf[0] != 'D'; }], @@ -1261,18 +1352,19 @@ 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_POSITIONS -dnl 9 = gl_PRINTF_FLAG_GROUPING -dnl 10 = gl_PRINTF_FLAG_LEFTADJUST -dnl 11 = gl_PRINTF_FLAG_ZERO -dnl 12 = gl_PRINTF_PRECISION -dnl 13 = gl_PRINTF_ENOMEM -dnl 14 = gl_SNPRINTF_PRESENCE -dnl 15 = gl_SNPRINTF_TRUNCATION_C99 -dnl 16 = gl_SNPRINTF_RETVAL_C99 -dnl 17 = gl_SNPRINTF_DIRECTIVE_N -dnl 18 = gl_SNPRINTF_SIZE1 -dnl 19 = gl_VSNPRINTF_ZEROSIZE_C99 +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... @@ -1281,42 +1373,44 @@ 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 POSIX/XSI format strings with positions... -dnl 9 = checking whether printf supports the grouping flag... -dnl 10 = checking whether printf supports the left-adjust flag correctly... -dnl 11 = checking whether printf supports the zero flag correctly... -dnl 12 = checking whether printf supports large precisions... -dnl 13 = checking whether printf survives out-of-memory conditions... -dnl 14 = checking for snprintf... -dnl 15 = checking whether snprintf truncates the result as in C99... -dnl 16 = checking whether snprintf returns a byte count as in C99... -dnl 17 = checking whether snprintf fully supports the 'n' directive... -dnl 18 = checking whether snprintf respects a size of 1... -dnl 19 = checking whether vsnprintf respects a zero size as in C99... +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 -dnl glibc 2.5 . . . . . . . . . . . . . . . . . . . -dnl glibc 2.3.6 . . . . # . . . . . . . . . . . . . . -dnl FreeBSD 5.4, 6.1 . . . . # . . . . . # . # . . . . . . -dnl MacOS X 10.3.9 . . . . # . . . . . # . # . . . . . . -dnl OpenBSD 3.9, 4.0 . . # # # # . . # . # . # . . . . . . -dnl Cygwin 2007 (= Cygwin 1.5.24) . . . . # # . . . ? # ? ? . . . . . . -dnl Cygwin 2006 (= Cygwin 1.5.19) # . . . # # . . # ? # ? ? . . . . . . -dnl Solaris 10 . . # # # . . . . . # . . . . . . . . -dnl Solaris 2.6 ... 9 # . # # # # . . . . # . . . . . . . . -dnl Solaris 2.5.1 # . # # # # . . . . # . . # # # # # # -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 4.0 . ? ? ? ? ? . . ? ? ? ? ? . . . ? ? ? -dnl NetBSD 3.0 . . . . # # . # # ? # . # . . . . . . -dnl Haiku . . . # # # . . . . . . ? . . . . . . -dnl BeOS # # . # # # . # . ? . # ? . . . . . . -dnl mingw # # # # # # . # # . # # ? . # # # . . +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 MacOS 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 10 . . # # # . . # . . . # . . . . . . . . +dnl Solaris 2.6 ... 9 # . # # # # . # . . . # . . . . . . . . +dnl Solaris 2.5.1 # . # # # # . # . . . # . . # # # # # # +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 4.0 . ? ? ? ? ? . ? . ? ? ? ? ? . . . ? ? ? +dnl NetBSD 3.0 . . . . # # . ? # # ? # . # . . . . . . +dnl Haiku . . . # # # . # . . . . . ? . . . . . . +dnl BeOS # # . # # # . ? # . ? . # ? . . . . . . +dnl mingw # # # # # # . . # # . # # ? . # # # . . |