diff options
Diffstat (limited to 'm4/printf.m4')
-rw-r--r-- | m4/printf.m4 | 133 |
1 files changed, 108 insertions, 25 deletions
diff --git a/m4/printf.m4 b/m4/printf.m4 index ead5eceae..0814c91fe 100644 --- a/m4/printf.m4 +++ b/m4/printf.m4 @@ -1,4 +1,4 @@ -# printf.m4 serial 43 +# printf.m4 serial 46 dnl Copyright (C) 2003, 2007-2011 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -178,28 +178,28 @@ static double zero = 0.0; int main () { int result = 0; - if (sprintf (buf, "%f", 1.0 / 0.0) < 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 / 0.0) < 0 + 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 / 0.0) < 0 + if (sprintf (buf, "%e", 1.0 / zero) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 4; - if (sprintf (buf, "%e", -1.0 / 0.0) < 0 + 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 / 0.0) < 0 + if (sprintf (buf, "%g", 1.0 / zero) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 16; - if (sprintf (buf, "%g", -1.0 / 0.0) < 0 + 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 @@ -251,6 +251,7 @@ 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. @@ -294,34 +295,34 @@ int main () { int result = 0; nocrash_init(); - if (sprintf (buf, "%Lf", 1.0L / 0.0L) < 0 + if (sprintf (buf, "%Lf", 1.0L / zeroL) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 1; - if (sprintf (buf, "%Lf", -1.0L / 0.0L) < 0 + 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 / 0.0L) < 0 + if (sprintf (buf, "%Le", 1.0L / zeroL) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 1; - if (sprintf (buf, "%Le", -1.0L / 0.0L) < 0 + 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 / 0.0L) < 0 + if (sprintf (buf, "%Lg", 1.0L / zeroL) < 0 || (strcmp (buf, "inf") != 0 && strcmp (buf, "infinity") != 0)) result |= 1; - if (sprintf (buf, "%Lg", -1.0L / 0.0L) < 0 + 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_)) +#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 @@ -478,6 +479,7 @@ AC_DEFUN([gl_PRINTF_DIRECTIVE_A], #include <stdio.h> #include <string.h> static char buf[100]; +static double zero = 0.0; int main () { int result = 0; @@ -502,7 +504,7 @@ int main () 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 / 0.0, 33, 44, 55) < 0 + if (sprintf (buf, "%010a %d", 1.0 / zero, 33, 44, 55) < 0 || buf[0] == '0') result |= 8; /* This catches a MacOS X 10.3.9 (Darwin 7.9) bug. */ @@ -562,13 +564,14 @@ AC_DEFUN([gl_PRINTF_DIRECTIVE_F], #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 / 0.0) < 0 + 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. */ @@ -615,12 +618,27 @@ AC_DEFUN([gl_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. */ @@ -636,7 +654,8 @@ int main () [ changequote(,)dnl case "$host_os" in - *) gl_cv_func_printf_directive_n="guessing yes";; + mingw*) gl_cv_func_printf_directive_n="guessing no";; + *) gl_cv_func_printf_directive_n="guessing yes";; esac changequote([,])dnl ]) @@ -862,9 +881,10 @@ AC_DEFUN([gl_PRINTF_FLAG_ZERO], #include <stdio.h> #include <string.h> static char buf[100]; +static double zero = 0.0; int main () { - if (sprintf (buf, "%010f", 1.0 / 0.0, 33, 44, 55) < 0 + if (sprintf (buf, "%010f", 1.0 / zero, 33, 44, 55) < 0 || (strcmp (buf, " inf") != 0 && strcmp (buf, " infinity") != 0)) return 1; @@ -1076,6 +1096,7 @@ 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], [ @@ -1083,11 +1104,25 @@ AC_DEFUN([gl_SNPRINTF_TRUNCATION_C99], [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"); - snprintf (buf, 3, "%d %d", 4567, 89); + my_snprintf (buf, 3, "%d %d", 4567, 89); if (memcmp (buf, "45\0DEF", 6) != 0) return 1; return 0; @@ -1157,6 +1192,7 @@ 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], [ @@ -1164,15 +1200,29 @@ AC_DEFUN_ONCE([gl_SNPRINTF_RETVAL_C99], [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 (snprintf (buf, 3, "%d %d", 4567, 89) != 7) + if (my_snprintf (buf, 3, "%d %d", 4567, 89) != 7) return 1; - if (snprintf (buf, 0, "%d %d", 4567, 89) != 7) + if (my_snprintf (buf, 0, "%d %d", 4567, 89) != 7) return 2; - if (snprintf (NULL, 0, "%d %d", 4567, 89) != 7) + if (my_snprintf (NULL, 0, "%d %d", 4567, 89) != 7) return 3; return 0; }]])], @@ -1221,6 +1271,7 @@ 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], [ @@ -1228,6 +1279,20 @@ AC_DEFUN([gl_SNPRINTF_DIRECTIVE_N], [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 () @@ -1237,7 +1302,7 @@ int main () support %n in format strings in read-only memory but not in writable memory. */ strcpy (fmtstring, "%d %n"); - snprintf (buf, 4, fmtstring, 12345, &count, 33, 44, 55); + my_snprintf (buf, 4, fmtstring, 12345, &count, 33, 44, 55); if (count != 6) return 1; return 0; @@ -1289,16 +1354,31 @@ 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' }; - snprintf (buf, 1, "%d", 12345); + my_snprintf (buf, 1, "%d", 12345); return buf[1] != 'E'; }]])], [gl_cv_func_snprintf_size1=yes], @@ -1483,4 +1563,7 @@ dnl NetBSD 4.0 . ? ? ? ? ? . ? . ? ? ? ? ? . dnl NetBSD 3.0 . . . . # # . ? # # ? # . # . . . . . . dnl Haiku . . . # # # . # . . . . . ? . . ? . . . dnl BeOS # # . # # # . ? # . ? . # ? . . ? . . . -dnl mingw # # # # # # . . # # . # # ? . # # # . . +dnl old mingw / msvcrt # # # # # # . . # # . # # ? . # # # . . +dnl MSVC 9 # # # # # # # . # # . # # ? # # # # . . +dnl mingw 2009-2011 . # . # . . . . # # . . . ? . . . . . . +dnl mingw-w64 2011 # # # # # # . . # # . # # ? . # # # . . |