diff options
Diffstat (limited to 'm4/printf.m4')
| -rw-r--r-- | m4/printf.m4 | 938 |
1 files changed, 726 insertions, 212 deletions
diff --git a/m4/printf.m4 b/m4/printf.m4 index c8e74e22cc..0cb14d6f00 100644 --- a/m4/printf.m4 +++ b/m4/printf.m4 @@ -1,5 +1,6 @@ -# printf.m4 serial 71 -dnl Copyright (C) 2003, 2007-2021 Free Software Foundation, Inc. +# printf.m4 +# serial 91 +dnl Copyright (C) 2003, 2007-2024 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. @@ -63,10 +64,11 @@ changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_sizes_c99="guessing yes";; # Guess yes on musl systems. - *-musl*) gl_cv_func_printf_sizes_c99="guessing yes";; + *-musl* | midipix*) 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";; + midnightbsd*) 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";; @@ -85,7 +87,8 @@ changequote(,)dnl linux*-android*) gl_cv_func_printf_sizes_c99="guessing yes";; changequote([,])dnl # Guess yes on MSVC, no on mingw. - mingw*) AC_EGREP_CPP([Known], [ + windows*-msvc*) gl_cv_func_printf_sizes_c99="guessing yes" ;; + mingw* | windows*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif @@ -100,6 +103,92 @@ changequote([,])dnl ]) ]) +dnl Test whether the *printf family of functions supports the 'w8', 'w16', +dnl 'w32', 'w64', 'wf8', 'wf16', 'wf32', 'wf64' size specifiers. (ISO C23) +dnl Result is gl_cv_func_printf_sizes_c23. + +AC_DEFUN([gl_PRINTF_SIZES_C23], +[ + 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 C23], + [gl_cv_func_printf_sizes_c23], + [ + 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; + buf[0] = '\0'; + if (sprintf (buf, "%w8u %d", (uint8_t) 123, 33, 44, 55) < 0 + || strcmp (buf, "123 33") != 0) + result |= 1; + buf[0] = '\0'; + if (sprintf (buf, "%wf8u %d", (uint_fast8_t) 123, 33, 44, 55) < 0 + || strcmp (buf, "123 33") != 0) + result |= 1; + buf[0] = '\0'; + if (sprintf (buf, "%w16u %d", (uint16_t) 12345, 33, 44, 55) < 0 + || strcmp (buf, "12345 33") != 0) + result |= 2; + buf[0] = '\0'; + if (sprintf (buf, "%wf16u %d", (uint_fast16_t) 12345, 33, 44, 55) < 0 + || strcmp (buf, "12345 33") != 0) + result |= 2; + buf[0] = '\0'; + if (sprintf (buf, "%w32u %d", (uint32_t) 12345671, 33, 44, 55) < 0 + || strcmp (buf, "12345671 33") != 0) + result |= 4; + buf[0] = '\0'; + if (sprintf (buf, "%wf32u %d", (uint_fast32_t) 12345671, 33, 44, 55) < 0 + || strcmp (buf, "12345671 33") != 0) + result |= 4; +#if HAVE_STDINT_H_WITH_UINTMAX || HAVE_INTTYPES_H_WITH_UINTMAX + buf[0] = '\0'; + if (sprintf (buf, "%w64u %d", (uint64_t) 12345671, 33, 44, 55) < 0 + || strcmp (buf, "12345671 33") != 0) + result |= 8; + buf[0] = '\0'; + if (sprintf (buf, "%wf64u %d", (uint_fast64_t) 12345671, 33, 44, 55) < 0 + || strcmp (buf, "12345671 33") != 0) + result |= 8; +#else + result |= 8; +#endif + return result; +}]])], + [gl_cv_func_printf_sizes_c23=yes], + [gl_cv_func_printf_sizes_c23=no], + [ + case "$host_os" in + # Guess no on glibc systems. + *-gnu* | gnu*) gl_cv_func_printf_sizes_c23="guessing no";; + # Guess no on musl systems. + *-musl* | midipix*) gl_cv_func_printf_sizes_c23="guessing no";; + # Guess no on Android. + linux*-android*) gl_cv_func_printf_sizes_c23="guessing no";; + # Guess no on native Windows. + mingw* | windows*) gl_cv_func_printf_sizes_c23="guessing no";; + # If we don't know, obey --enable-cross-guesses. + *) gl_cv_func_printf_sizes_c23="$gl_cross_guess_normal";; + esac + ]) + ]) +]) + 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. @@ -136,20 +225,21 @@ int main () [gl_cv_func_printf_long_double=yes], [gl_cv_func_printf_long_double=no], [case "$host_os" in - # Guess no on BeOS. - beos*) gl_cv_func_printf_long_double="guessing no";; - # Guess yes on Android. - linux*-android*) gl_cv_func_printf_long_double="guessing yes";; - # Guess yes on MSVC, no on mingw. - mingw*) AC_EGREP_CPP([Known], [ + # Guess no on BeOS. + beos*) gl_cv_func_printf_long_double="guessing no";; + # Guess yes on Android. + linux*-android*) gl_cv_func_printf_long_double="guessing yes";; + # Guess yes on MSVC, no on mingw. + windows*-msvc*) gl_cv_func_printf_long_double="guessing yes" ;; + mingw* | windows*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif - ], - [gl_cv_func_printf_long_double="guessing yes"], - [gl_cv_func_printf_long_double="guessing no"]) - ;; - *) gl_cv_func_printf_long_double="guessing yes";; + ], + [gl_cv_func_printf_long_double="guessing yes"], + [gl_cv_func_printf_long_double="guessing no"]) + ;; + *) gl_cv_func_printf_long_double="guessing yes";; esac ]) ]) @@ -243,10 +333,11 @@ changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_infinite="guessing yes";; # Guess yes on musl systems. - *-musl*) gl_cv_func_printf_infinite="guessing yes";; + *-musl* | midipix*) 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";; + midnightbsd*) 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";; @@ -266,7 +357,8 @@ changequote(,)dnl linux*-android*) gl_cv_func_printf_infinite="guessing no";; changequote([,])dnl # Guess yes on MSVC, no on mingw. - mingw*) AC_EGREP_CPP([Known], [ + windows*-msvc*) gl_cv_func_printf_infinite="guessing yes" ;; + mingw* | windows*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif @@ -465,10 +557,11 @@ changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_infinite_long_double="guessing yes";; # Guess yes on musl systems. - *-musl*) gl_cv_func_printf_infinite_long_double="guessing yes";; + *-musl* | midipix*) 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";; + midnightbsd*) 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";; @@ -479,7 +572,8 @@ changequote(,)dnl linux*-android*) gl_cv_func_printf_infinite_long_double="guessing no";; changequote([,])dnl # Guess yes on MSVC, no on mingw. - mingw*) AC_EGREP_CPP([Known], [ + windows*-msvc*) gl_cv_func_printf_infinite_long_double="guessing yes" ;; + mingw* | windows*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif @@ -534,7 +628,7 @@ int main () && 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. */ + /* This catches a FreeBSD 13.0 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 @@ -588,11 +682,11 @@ int main () [gl_cv_func_printf_directive_a="guessing no"]) ;; # Guess yes on musl systems. - *-musl*) gl_cv_func_printf_directive_a="guessing yes";; + *-musl* | midipix*) gl_cv_func_printf_directive_a="guessing yes";; # Guess no on Android. linux*-android*) gl_cv_func_printf_directive_a="guessing no";; # Guess no on native Windows. - mingw*) gl_cv_func_printf_directive_a="guessing no";; + mingw* | windows*) gl_cv_func_printf_directive_a="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_printf_directive_a="$gl_cross_guess_normal";; esac @@ -600,6 +694,116 @@ int main () ]) ]) +dnl Test whether the *printf family of functions supports the 'b' conversion +dnl specifier for binary output of integers. +dnl (ISO C23) +dnl Result is gl_cv_func_printf_directive_b. + +AC_DEFUN([gl_PRINTF_DIRECTIVE_B], +[ + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CACHE_CHECK([whether printf supports the 'b' directive], + [gl_cv_func_printf_directive_b], + [ + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <stdio.h> +#include <string.h> +static char buf[100]; +int main () +{ + int result = 0; + if (sprintf (buf, "%b %d", 12345, 33, 44, 55) < 0 + || strcmp (buf, "11000000111001 33") != 0) + result |= 1; + return result; +}]])], + [gl_cv_func_printf_directive_b=yes], + [gl_cv_func_printf_directive_b=no], + [ + case "$host_os" in + # Guess yes on glibc >= 2.35 systems. + *-gnu* | gnu*) + AC_EGREP_CPP([Lucky], [ + #include <features.h> + #ifdef __GNU_LIBRARY__ + #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 35) || (__GLIBC__ > 2) + Lucky user + #endif + #endif + ], + [gl_cv_func_printf_directive_uppercase_b="guessing yes"], + [gl_cv_func_printf_directive_uppercase_b="guessing no"]) + ;; + # Guess no on musl systems. + *-musl* | midipix*) gl_cv_func_printf_directive_b="guessing no";; + # Guess no on Android. + linux*-android*) gl_cv_func_printf_directive_b="guessing no";; + # Guess no on native Windows. + mingw* | windows*) gl_cv_func_printf_directive_b="guessing no";; + # If we don't know, obey --enable-cross-guesses. + *) gl_cv_func_printf_directive_b="$gl_cross_guess_normal";; + esac + ]) + ]) +]) + +dnl Test whether the *printf family of functions supports the 'B' conversion +dnl specifier for binary output of integers. +dnl (GNU, encouraged by ISO C23 ยง 7.23.6.1) +dnl Result is gl_cv_func_printf_directive_uppercase_b. + +AC_DEFUN([gl_PRINTF_DIRECTIVE_UPPERCASE_B], +[ + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CACHE_CHECK([whether printf supports the 'B' directive], + [gl_cv_func_printf_directive_uppercase_b], + [ + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <stdio.h> +#include <string.h> +static char buf[100]; +int main () +{ + int result = 0; + if (sprintf (buf, "%#B %d", 12345, 33, 44, 55) < 0 + || strcmp (buf, "0B11000000111001 33") != 0) + result |= 1; + return result; +}]])], + [gl_cv_func_printf_directive_uppercase_b=yes], + [gl_cv_func_printf_directive_uppercase_b=no], + [ + case "$host_os" in + # Guess yes on glibc >= 2.35 systems. + *-gnu* | gnu*) + AC_EGREP_CPP([Lucky], [ + #include <features.h> + #ifdef __GNU_LIBRARY__ + #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 35) || (__GLIBC__ > 2) + Lucky user + #endif + #endif + ], + [gl_cv_func_printf_directive_uppercase_b="guessing yes"], + [gl_cv_func_printf_directive_uppercase_b="guessing no"]) + ;; + # Guess no on musl systems. + *-musl* | midipix*) gl_cv_func_printf_directive_uppercase_b="guessing no";; + # Guess no on Android. + linux*-android*) gl_cv_func_printf_directive_uppercase_b="guessing no";; + # Guess no on native Windows. + mingw* | windows*) gl_cv_func_printf_directive_uppercase_b="guessing no";; + # If we don't know, obey --enable-cross-guesses. + *) gl_cv_func_printf_directive_uppercase_b="$gl_cross_guess_normal";; + 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. @@ -640,10 +844,11 @@ changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_printf_directive_f="guessing yes";; # Guess yes on musl systems. - *-musl*) gl_cv_func_printf_directive_f="guessing yes";; + *-musl* | midipix*) 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";; + midnightbsd*) 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";; @@ -657,7 +862,8 @@ changequote(,)dnl linux*-android*) gl_cv_func_printf_directive_f="guessing no";; changequote([,])dnl # Guess yes on MSVC, no on mingw. - mingw*) AC_EGREP_CPP([Known], [ + windows*-msvc*) gl_cv_func_printf_directive_f="guessing yes" ;; + mingw* | windows*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif @@ -685,6 +891,7 @@ AC_DEFUN([gl_PRINTF_DIRECTIVE_N], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ +#include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -702,6 +909,12 @@ invalid_parameter_handler (const wchar_t *expression, exit (1); } #endif +static void +abort_handler (int sig) +{ + (void) sig; + _exit (1); +} static char fmtstring[10]; static char buf[100]; int main () @@ -710,6 +923,7 @@ int main () #ifdef _MSC_VER _set_invalid_parameter_handler (invalid_parameter_handler); #endif + signal (SIGABRT, abort_handler); /* 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. */ @@ -723,21 +937,21 @@ int main () [gl_cv_func_printf_directive_n=yes], [gl_cv_func_printf_directive_n=no], [case "$host_os" in - # Guess no on glibc when _FORTIFY_SOURCE >= 2. - *-gnu* | gnu*) AC_COMPILE_IFELSE( - [AC_LANG_SOURCE( - [[#if _FORTIFY_SOURCE >= 2 - error fail - #endif - ]])], - [gl_cv_func_printf_directive_n="guessing yes"], - [gl_cv_func_printf_directive_n="guessing no"]) - ;; - # Guess no on Android. - linux*-android*) gl_cv_func_printf_directive_n="guessing no";; - # Guess no on native Windows. - mingw*) gl_cv_func_printf_directive_n="guessing no";; - *) gl_cv_func_printf_directive_n="guessing yes";; + # Guess no on glibc when _FORTIFY_SOURCE >= 2. + *-gnu* | gnu*) AC_COMPILE_IFELSE( + [AC_LANG_SOURCE( + [[#if _FORTIFY_SOURCE >= 2 + error fail + #endif + ]])], + [gl_cv_func_printf_directive_n="guessing yes"], + [gl_cv_func_printf_directive_n="guessing no"]) + ;; + # Guess no on Android. + linux*-android*) gl_cv_func_printf_directive_n="guessing no";; + # Guess no on native Windows. + mingw* | windows*) gl_cv_func_printf_directive_n="guessing no";; + *) gl_cv_func_printf_directive_n="guessing yes";; esac ]) ]) @@ -807,18 +1021,64 @@ int main () [ changequote(,)dnl case "$host_os" in - # Guess yes on OpenBSD >= 6.0. - openbsd[1-5].*) gl_cv_func_printf_directive_ls="guessing no";; - openbsd*) gl_cv_func_printf_directive_ls="guessing yes";; - 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";; - # Guess no on Android. - linux*-android*) gl_cv_func_printf_directive_ls="guessing no";; - # Guess yes on native Windows. - mingw*) gl_cv_func_printf_directive_ls="guessing yes";; - *) gl_cv_func_printf_directive_ls="guessing yes";; + # Guess yes on OpenBSD >= 6.0. + openbsd[1-5].*) gl_cv_func_printf_directive_ls="guessing no";; + openbsd*) gl_cv_func_printf_directive_ls="guessing yes";; + 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";; + # Guess no on Android. + linux*-android*) gl_cv_func_printf_directive_ls="guessing no";; + # Guess yes on native Windows. + mingw* | windows*) gl_cv_func_printf_directive_ls="guessing yes";; + *) gl_cv_func_printf_directive_ls="guessing yes";; + esac +changequote([,])dnl + ]) + ]) +]) + +dnl Test whether the *printf family of functions supports the %lc format +dnl directive and in particular, when the argument is a null wide character, +dnl whether the functions produce a NUL byte, as specified in ISO C 23 +dnl after the issue GB-141 was fixed. +dnl Result is gl_cv_func_printf_directive_lc. + +AC_DEFUN([gl_PRINTF_DIRECTIVE_LC], +[ + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CACHE_CHECK([whether printf supports the 'lc' directive correctly], + [gl_cv_func_printf_directive_lc], + [ + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <stdio.h> +#include <wchar.h> +#include <string.h> +int main () +{ + int result = 0; + char buf[100]; + /* This test fails on musl libc 1.2.4. */ + { + buf[0] = '\0'; + if (sprintf (buf, "%lc%lc%lc", (wint_t) 'a', (wint_t) 0, (wint_t) 'z') < 0 + || memcmp (buf, "a\0z", 4) != 0) + result |= 1; + } + return result; +}]])], + [gl_cv_func_printf_directive_lc=yes], + [gl_cv_func_printf_directive_lc=no], + [ +changequote(,)dnl + case "$host_os" in + # Guess no on musl libc. + *-musl* | midipix*) gl_cv_func_printf_directive_lc="guessing no";; + # Guess yes otherwise. + *) gl_cv_func_printf_directive_lc="guessing yes";; esac changequote([,])dnl ]) @@ -829,7 +1089,7 @@ dnl Test whether the *printf family of functions supports POSIX/XSI format dnl strings with positions. (POSIX:2001) dnl Result is gl_cv_func_printf_positions. -AC_DEFUN([gl_PRINTF_POSITIONS], +AC_DEFUN_ONCE([gl_PRINTF_POSITIONS], [ AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles @@ -855,13 +1115,17 @@ int main () changequote(,)dnl case "$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";; - # Guess yes on Android. - linux*-android*) gl_cv_func_printf_positions="guessing yes";; - # Guess no on native Windows. - mingw* | pw*) gl_cv_func_printf_positions="guessing no";; - *) gl_cv_func_printf_positions="guessing yes";; + gl_cv_func_printf_positions="guessing no";; + beos*) + gl_cv_func_printf_positions="guessing no";; + # Guess yes on Android. + linux*-android*) + gl_cv_func_printf_positions="guessing yes";; + # Guess no on native Windows. + mingw* | windows* | pw*) + gl_cv_func_printf_positions="guessing no";; + *) + gl_cv_func_printf_positions="guessing yes";; esac changequote([,])dnl ]) @@ -896,13 +1160,13 @@ int main () [ changequote(,)dnl case "$host_os" in - cygwin*) gl_cv_func_printf_flag_grouping="guessing no";; - netbsd*) gl_cv_func_printf_flag_grouping="guessing no";; - # Guess no on Android. - linux*-android*) gl_cv_func_printf_flag_grouping="guessing no";; - # Guess no on native Windows. - mingw* | pw*) gl_cv_func_printf_flag_grouping="guessing no";; - *) gl_cv_func_printf_flag_grouping="guessing yes";; + cygwin*) gl_cv_func_printf_flag_grouping="guessing no";; + netbsd*) gl_cv_func_printf_flag_grouping="guessing no";; + # Guess no on Android. + linux*-android*) gl_cv_func_printf_flag_grouping="guessing no";; + # Guess no on native Windows. + mingw* | windows* | pw*) gl_cv_func_printf_flag_grouping="guessing no";; + *) gl_cv_func_printf_flag_grouping="guessing yes";; esac changequote([,])dnl ]) @@ -939,16 +1203,16 @@ int main () [ changequote(,)dnl case "$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 on Android. - linux*-android*) gl_cv_func_printf_flag_leftadjust="guessing yes";; - # Guess yes on native Windows. - mingw*) gl_cv_func_printf_flag_leftadjust="guessing yes";; - # Guess yes otherwise. - *) gl_cv_func_printf_flag_leftadjust="guessing yes";; + # 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 on Android. + linux*-android*) gl_cv_func_printf_flag_leftadjust="guessing yes";; + # Guess yes on native Windows. + mingw* | windows*) gl_cv_func_printf_flag_leftadjust="guessing yes";; + # Guess yes otherwise. + *) gl_cv_func_printf_flag_leftadjust="guessing yes";; esac changequote([,])dnl ]) @@ -986,18 +1250,62 @@ int main () [ changequote(,)dnl case "$host_os" in - # Guess yes on glibc systems. - *-gnu* | gnu*) gl_cv_func_printf_flag_zero="guessing yes";; - # Guess yes on musl systems. - *-musl*) gl_cv_func_printf_flag_zero="guessing yes";; - # Guess yes on BeOS. - beos*) gl_cv_func_printf_flag_zero="guessing yes";; - # Guess no on Android. - linux*-android*) gl_cv_func_printf_flag_zero="guessing no";; - # Guess no on native Windows. - mingw*) gl_cv_func_printf_flag_zero="guessing no";; - # If we don't know, obey --enable-cross-guesses. - *) gl_cv_func_printf_flag_zero="$gl_cross_guess_normal";; + # Guess yes on glibc systems. + *-gnu* | gnu*) gl_cv_func_printf_flag_zero="guessing yes";; + # Guess yes on musl systems. + *-musl* | midipix*) gl_cv_func_printf_flag_zero="guessing yes";; + # Guess yes on BeOS. + beos*) gl_cv_func_printf_flag_zero="guessing yes";; + # Guess no on Android. + linux*-android*) gl_cv_func_printf_flag_zero="guessing no";; + # Guess no on native Windows. + mingw* | windows*) gl_cv_func_printf_flag_zero="guessing no";; + # If we don't know, obey --enable-cross-guesses. + *) gl_cv_func_printf_flag_zero="$gl_cross_guess_normal";; + esac +changequote([,])dnl + ]) + ]) +]) + +dnl Test whether the *printf family of functions supports the # flag with a +dnl zero precision and a zero value in the 'x' and 'X' directives correctly. +dnl ISO C and POSIX specify that for the 'd', 'i', 'b', 'o', 'u', 'x', 'X' +dnl directives: "The result of converting a zero value with a precision of +dnl zero is no characters." But on Mac OS X 10.5, for the 'x', 'X' directives, +dnl when a # flag is present, the output is "0" instead of "". +dnl Result is gl_cv_func_printf_flag_alt_precision_zero. + +AC_DEFUN([gl_PRINTF_FLAG_ALT_PRECISION_ZERO], +[ + AC_REQUIRE([AC_PROG_CC]) + AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles + AC_CACHE_CHECK([whether printf supports the alternative flag with a zero precision], + [gl_cv_func_printf_flag_alt_precision_zero], + [ + AC_RUN_IFELSE( + [AC_LANG_SOURCE([[ +#include <stdio.h> +static char buf[10]; +int main () +{ + int result = 0; + if (sprintf (buf, "%#.0x %d", 0, 33, 44) > 0 + 3) + result |= 1; + return result; +}]])], + [gl_cv_func_printf_flag_alt_precision_zero=yes], + [gl_cv_func_printf_flag_alt_precision_zero=no], + [ +changequote(,)dnl + case "$host_os" in + # Guess no only on macOS 10..12 systems. + darwin[0-9] | darwin[0-9].* | \ + darwin1[0-9] | darwin1[0-9].* | \ + darwin2[0-1] | darwin2[0-1].*) + gl_cv_func_printf_flag_alt_precision_zero="guessing no" ;; + darwin*) gl_cv_func_printf_flag_alt_precision_zero="guessing yes" ;; + *) gl_cv_func_printf_flag_alt_precision_zero="guessing yes" ;; esac changequote([,])dnl ]) @@ -1050,12 +1358,12 @@ int main () changequote(,)dnl case "$host_os" in # Guess no only on Solaris, native Windows, and BeOS systems. - solaris*) gl_cv_func_printf_precision="guessing no" ;; - mingw* | pw*) gl_cv_func_printf_precision="guessing no" ;; - beos*) gl_cv_func_printf_precision="guessing no" ;; - # Guess yes on Android. - linux*-android*) gl_cv_func_printf_precision="guessing yes" ;; - *) gl_cv_func_printf_precision="guessing yes" ;; + solaris*) gl_cv_func_printf_precision="guessing no" ;; + mingw* | windows* | pw*) gl_cv_func_printf_precision="guessing no" ;; + beos*) gl_cv_func_printf_precision="guessing no" ;; + # Guess yes on Android. + linux*-android*) gl_cv_func_printf_precision="guessing yes" ;; + *) gl_cv_func_printf_precision="guessing yes" ;; esac changequote([,])dnl ]) @@ -1235,10 +1543,11 @@ changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on musl systems. - *-musl*) gl_cv_func_snprintf_truncation_c99="guessing yes";; + *-musl* | midipix*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on FreeBSD >= 5. freebsd[1-4].*) gl_cv_func_snprintf_truncation_c99="guessing no";; freebsd* | kfreebsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; + midnightbsd*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess yes on Mac OS X >= 10.3. darwin[1-6].*) gl_cv_func_snprintf_truncation_c99="guessing no";; darwin*) gl_cv_func_snprintf_truncation_c99="guessing yes";; @@ -1270,7 +1579,7 @@ changequote(,)dnl # Guess yes on Android. linux*-android*) gl_cv_func_snprintf_truncation_c99="guessing yes";; # Guess no on native Windows. - mingw*) gl_cv_func_snprintf_truncation_c99="guessing no";; + mingw* | windows*) gl_cv_func_snprintf_truncation_c99="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_snprintf_truncation_c99="$gl_cross_guess_normal";; esac @@ -1339,10 +1648,11 @@ changequote(,)dnl # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_snprintf_retval_c99="guessing yes";; # Guess yes on musl systems. - *-musl*) gl_cv_func_snprintf_retval_c99="guessing yes";; + *-musl* | midipix*) 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";; + midnightbsd*) 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";; @@ -1366,7 +1676,8 @@ changequote(,)dnl linux*-android*) gl_cv_func_snprintf_retval_c99="guessing yes";; changequote([,])dnl # Guess yes on MSVC, no on mingw. - mingw*) AC_EGREP_CPP([Known], [ + windows*-msvc*) gl_cv_func_snprintf_retval_c99="guessing yes" ;; + mingw* | windows*) AC_EGREP_CPP([Known], [ #ifdef _MSC_VER Known #endif @@ -1395,6 +1706,7 @@ AC_DEFUN([gl_SNPRINTF_DIRECTIVE_N], [ AC_RUN_IFELSE( [AC_LANG_SOURCE([[ +#include <signal.h> #include <stdio.h> #include <string.h> #if HAVE_SNPRINTF @@ -1411,11 +1723,18 @@ static int my_snprintf (char *buf, int size, const char *format, ...) return ret; } #endif +static void +abort_handler (int sig) +{ + (void) sig; + _exit (1); +} static char fmtstring[10]; static char buf[100]; int main () { int count = -1; + signal (SIGABRT, abort_handler); /* 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. */ @@ -1441,10 +1760,11 @@ int main () ;; changequote(,)dnl # Guess yes on musl systems. - *-musl*) gl_cv_func_snprintf_directive_n="guessing yes";; + *-musl* | midipix*) 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";; + midnightbsd*) 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";; @@ -1469,7 +1789,7 @@ changequote(,)dnl # Guess no on Android. linux*-android*) gl_cv_func_snprintf_directive_n="guessing no";; # Guess no on native Windows. - mingw*) gl_cv_func_snprintf_directive_n="guessing no";; + mingw* | windows*) gl_cv_func_snprintf_directive_n="guessing no";; # If we don't know, obey --enable-cross-guesses. *) gl_cv_func_snprintf_directive_n="$gl_cross_guess_normal";; changequote([,])dnl @@ -1517,11 +1837,11 @@ int main() [gl_cv_func_snprintf_size1=yes], [gl_cv_func_snprintf_size1=no], [case "$host_os" in - # Guess yes on Android. - linux*-android*) gl_cv_func_snprintf_size1="guessing yes" ;; - # Guess yes on native Windows. - mingw*) gl_cv_func_snprintf_size1="guessing yes" ;; - *) gl_cv_func_snprintf_size1="guessing yes" ;; + # Guess yes on Android. + linux*-android*) gl_cv_func_snprintf_size1="guessing yes" ;; + # Guess yes on native Windows. + mingw* | windows*) gl_cv_func_snprintf_size1="guessing yes" ;; + *) gl_cv_func_snprintf_size1="guessing yes" ;; esac ]) ]) @@ -1594,126 +1914,320 @@ int main() [ changequote(,)dnl case "$host_os" in - # Guess yes on glibc systems. - *-gnu* | gnu*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; - # Guess yes on musl systems. - *-musl*) 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. + # Guess yes on glibc systems. + *-gnu* | gnu*) gl_cv_func_vsnprintf_zerosize_c99="guessing yes";; + # Guess yes on musl systems. + *-musl* | midipix*) 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";; + midnightbsd*) 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. + gl_cv_func_vsnprintf_zerosize_c99="guessing no";; + solaris*) |