-# printf.m4 serial 18
-dnl Copyright (C) 2003, 2007 Free Software Foundation, Inc.
+# printf.m4 serial 35
+dnl Copyright (C) 2003, 2007-2010 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 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],
}
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 ()
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],
[
[
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.
if test -n "$gl_printf_safe"; then
- AC_DEFINE([CHECK_PRINTF_SAFE], 1,
+ 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
[gl_cv_func_printf_infinite_long_double],
[
AC_TRY_RUN([
+]GL_NOCRASH[
#include <float.h>
#include <stdio.h>
#include <string.h>
static long double zeroL = 0.0L;
int main ()
{
+ nocrash_init();
if (sprintf (buf, "%Lf", 1.0L / 0.0L) < 0
|| (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0))
return 1;
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;
])
])
+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.
])
])
+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_TRY_RUN([
+#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 "$host_os" in
+ # Guess yes on HP-UX 11.
+ hpux11*) gl_cv_func_printf_flag_leftadjust="guessing yes";;
+ # Guess no on HP-UX 10 and older.
+ hpux*) gl_cv_func_printf_flag_leftadjust="guessing no";;
+ # Guess yes otherwise.
+ *) gl_cv_func_printf_flag_leftadjust="guessing yes";;
+ esac
+changequote([,])dnl
+ ])
+ ])
+])
+
dnl Test whether the *printf family of functions supports padding of non-finite
dnl values with the 0 flag correctly. (ISO C99 + TC1 + TC2.) See
dnl <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html>
])
])
+dnl Test whether the *printf family of functions supports large precisions.
+dnl On mingw, precisions larger than 512 are treated like 512, in integer,
+dnl floating-point or pointer output. On BeOS, precisions larger than 1044
+dnl crash the program.
+dnl Result is gl_cv_func_printf_precision.
+
+AC_DEFUN([gl_PRINTF_PRECISION],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+ AC_CACHE_CHECK([whether printf supports large precisions],
+ [gl_cv_func_printf_precision],
+ [
+ AC_TRY_RUN([
+#include <stdio.h>
+#include <string.h>
+static char buf[5000];
+int main ()
+{
+#ifdef __BEOS__
+ /* On BeOS, this would crash and show a dialog box. Avoid the crash. */
+ return 1;
+#endif
+ if (sprintf (buf, "%.4000d %d", 1, 33, 44) < 4000 + 3)
+ return 1;
+ return 0;
+}], [gl_cv_func_printf_precision=yes], [gl_cv_func_printf_precision=no],
+ [
+changequote(,)dnl
+ case "$host_os" in
+ # Guess no only on native Win32 and BeOS systems.
+ 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
- AC_LANG_CONFTEST([AC_LANG_SOURCE([
+ if test $APPLE_UNIVERSAL_BUILD = 0; then
+ AC_LANG_CONFTEST([AC_LANG_SOURCE([
+]GL_NOCRASH[
changequote(,)dnl
#include <stdio.h>
#include <sys/types.h>
{
struct rlimit limit;
int ret;
+ nocrash_init ();
/* Some printf implementations allocate temporary space with malloc. */
/* On BSD systems, malloc() is limited by RLIMIT_DATA. */
#ifdef RLIMIT_DATA
}
changequote([,])dnl
])])
- if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
- (./conftest
- result=$?
- if test $result != 0 && test $result != 77; then result=1; fi
- exit $result
- ) >/dev/null 2>/dev/null
- case $? in
- 0) gl_cv_func_printf_enomem="yes" ;;
- 77) gl_cv_func_printf_enomem="guessing no" ;;
- *) gl_cv_func_printf_enomem="no" ;;
- esac
+ if AC_TRY_EVAL([ac_link]) && test -s conftest$ac_exeext; then
+ (./conftest
+ result=$?
+ if test $result != 0 && test $result != 77; then result=1; fi
+ exit $result
+ ) >/dev/null 2>/dev/null
+ case $? in
+ 0) gl_cv_func_printf_enomem="yes" ;;
+ 77) gl_cv_func_printf_enomem="guessing no" ;;
+ *) gl_cv_func_printf_enomem="no" ;;
+ esac
+ else
+ gl_cv_func_printf_enomem="guessing no"
+ fi
+ rm -fr conftest*
else
+ dnl A universal build on Apple MacOS X platforms.
+ dnl The result would be 'no' in 32-bit mode and 'yes' in 64-bit mode.
+ dnl But we need a configuration result that is valid in both modes.
gl_cv_func_printf_enomem="guessing no"
fi
- rm -fr conftest*
- else
+ fi
+ if test "$gl_cv_func_printf_enomem" = "guessing no"; then
changequote(,)dnl
case "$host_os" in
# Guess yes on glibc systems.
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
dnl ---------------------------------------------------------------------
dnl Result is gl_cv_func_snprintf_retval_c99.
-AC_DEFUN([gl_SNPRINTF_RETVAL_C99],
+AC_DEFUN_ONCE([gl_SNPRINTF_RETVAL_C99],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
])
])
+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_CACHE_CHECK([whether snprintf respects a size of 1],
+ [gl_cv_func_snprintf_size1],
+ [
+ AC_TRY_RUN([
+#include <stdio.h>
+int main()
+{
+ static char buf[8] = { 'D', 'E', 'A', 'D', 'B', 'E', 'E', 'F' };
+ 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 #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 }
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 }
}
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';
}],
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_ZERO
-dnl 11 = gl_PRINTF_ENOMEM
-dnl 12 = gl_SNPRINTF_PRESENCE
-dnl 13 = gl_SNPRINTF_TRUNCATION_C99
-dnl 14 = gl_SNPRINTF_RETVAL_C99
-dnl 15 = gl_SNPRINTF_DIRECTIVE_N
-dnl 16 = 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...
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 zero flag correctly...
-dnl 11 = checking whether printf survives out-of-memory conditions...
-dnl 12 = checking for snprintf...
-dnl 13 = checking whether snprintf truncates the result as in C99...
-dnl 14 = checking whether snprintf returns a byte count as in C99...
-dnl 15 = checking whether snprintf fully supports the 'n' directive...
-dnl 16 = 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
-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 10.20, 11.{00,11,23} # . . . # # . . . # . . . # # #
-dnl IRIX 6.5 # . # # # # . . . # . . . # . .
-dnl OSF/1 5.1 # . # # # # . . . # . . . # . #
-dnl OSF/1 4.0d # . # # # # . . . # . # # # # #
-dnl NetBSD 4.0 . ? ? ? ? ? . . ? ? ? . . . ? ?
-dnl NetBSD 3.0 . . . . # # . # # # # . . . . .
-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, 7.1 . . # # # . . . . . . # . . . . . . . .
+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 # # # # # # . . # # . # # ? . # # # . .
projects / gnulib.git / blobdiff