kc3-lang/gnulib/m4/snprintf-posix.m4
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Hash : f7a63a90
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Date : 2025-04-12T00:09:23
vasnprintf: Work around two grouping bugs on many platforms. * m4/printf.m4 (gl_PRINTF_FLAG_GROUPING_INT_PRECISION): New macro. (gl_PRINTF_FLAG_GROUPING_MULTIBYTE): New macro. * m4/fprintf-posix.m4 (gl_FUNC_FPRINTF_IS_POSIX): Require gl_PRINTF_FLAG_GROUPING_INT_PRECISION, gl_PRINTF_FLAG_GROUPING_MULTIBYTE. Test gl_cv_func_printf_flag_grouping_int_precision, gl_cv_func_printf_flag_grouping_multibyte. * m4/dprintf-posix.m4 (gl_FUNC_DPRINTF_IS_POSIX): Likewise. * m4/snprintf-posix.m4 (gl_FUNC_SNPRINTF_IS_POSIX): Likewise. * m4/sprintf-posix.m4 (gl_FUNC_SPRINTF_IS_POSIX): Likewise. * m4/vasnprintf-posix.m4 (gl_FUNC_VASNPRINTF_IS_POSIX): Likewise. * m4/vasprintf-posix.m4 (gl_FUNC_VASPRINTF_IS_POSIX): Likewise. * m4/vdprintf-posix.m4 (gl_FUNC_VDPRINTF_IS_POSIX): Likewise. * m4/vfprintf-posix.m4 (gl_FUNC_VFPRINTF_IS_POSIX): Likewise. * m4/vsnprintf-posix.m4 (gl_FUNC_VSNPRINTF_IS_POSIX): Likewise. * m4/vsprintf-posix.m4 (gl_FUNC_VSPRINTF_IS_POSIX): Likewise. * m4/obstack-printf-posix.m4 (gl_FUNC_OBSTACK_PRINTF_IS_POSIX): Likewise. * m4/vasnprintf.m4 (gl_PREREQ_VASNPRINTF_FLAG_GROUPING): Require gl_PRINTF_FLAG_GROUPING_INT_PRECISION, gl_PRINTF_FLAG_GROUPING_MULTIBYTE. Test gl_cv_func_printf_flag_grouping_int_precision, gl_cv_func_printf_flag_grouping_multibyte. Define the C macro NEED_PRINTF_FLAG_GROUPING_INT. * lib/vasnprintf.c (thousands_separator_char): New function. (THOUSEP_CHAR_MAXLEN): New macro. (thousands_separator_wchar): New function. (THOUSEP_WCHAR_MAXLEN): New macro. (MAX_ROOM_NEEDED): Improve the room estimate for FLAG_GROUP. (VASNPRINTF): Add code for emitting thousands separators in the %f, %F, %g, %G implementations and in the code relies the system's sprintf/snprintf/swprintf function. Test NEED_PRINTF_FLAG_GROUPING and NEED_PRINTF_FLAG_GROUPING_INT where needed. * tests/test-vasnprintf-posix2.c (main): Add tests of the grouping flag. * tests/test-vasnwprintf-posix2.c (main): Likewise. * tests/test-vasnprintf-posix2.sh: Test in both French locales, not only in one of them. * tests/test-vasnwprintf-posix2.sh: Likewise. * modules/vasnprintf-posix-tests (Depends-on): Add localeconv. * modules/vasnwprintf-posix-tests (Depends-on): Likewise. * doc/posix-functions/fprintf.texi: Mention the grouping bug with precision on integers and the grouping bug with a multibyte thousands separator. * doc/posix-functions/vfprintf.texi: Likewise. * doc/posix-functions/printf.texi: Likewise. * doc/posix-functions/vprintf.texi: Likewise. * doc/posix-functions/sprintf.texi: Likewise. * doc/posix-functions/vsprintf.texi: Likewise. * doc/posix-functions/snprintf.texi: Likewise. * doc/posix-functions/vsnprintf.texi: Likewise. * doc/posix-functions/dprintf.texi: Likewise. * doc/posix-functions/vdprintf.texi: Likewise. * doc/posix-functions/fwprintf.texi: Likewise. * doc/posix-functions/vfwprintf.texi: Likewise. * doc/posix-functions/wprintf.texi: Likewise. * doc/posix-functions/vwprintf.texi: Likewise. * doc/posix-functions/swprintf.texi: Likewise. * doc/posix-functions/vswprintf.texi: Likewise. * doc/posix-functions/asprintf.texi: Likewise. * doc/posix-functions/vasprintf.texi: Likewise. * doc/glibc-functions/obstack_printf.texi: Likewise. * doc/glibc-functions/obstack_vprintf.texi: Likewise.
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m4/snprintf-posix.m4
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# snprintf-posix.m4 # serial 23 dnl Copyright (C) 2007-2025 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 This file is offered as-is, without any warranty. AC_DEFUN([gl_FUNC_SNPRINTF_POSIX], [ AC_REQUIRE([gl_FUNC_SNPRINTF_IS_POSIX]) if test $gl_cv_func_snprintf_posix = no; then gl_PREREQ_VASNPRINTF_WITH_POSIX_EXTRAS gl_REPLACE_VASNPRINTF gl_REPLACE_SNPRINTF fi ]) dnl Test whether snprintf exists and is POSIX compliant. dnl Result is gl_cv_func_snprintf_posix. AC_DEFUN([gl_FUNC_SNPRINTF_IS_POSIX], [ AC_REQUIRE([gl_PRINTF_SIZES_C99]) AC_REQUIRE([gl_PRINTF_SIZES_C23]) AC_REQUIRE([gl_PRINTF_LONG_DOUBLE]) AC_REQUIRE([gl_PRINTF_INFINITE]) AC_REQUIRE([gl_PRINTF_INFINITE_LONG_DOUBLE]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_A]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_B]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_F]) m4_ifdef([gl_PRINTF_SUPPORT_N_DIRECTIVE],[AC_REQUIRE([gl_PRINTF_DIRECTIVE_N])]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_LS]) AC_REQUIRE([gl_PRINTF_DIRECTIVE_LC]) AC_REQUIRE([gl_PRINTF_POSITIONS]) AC_REQUIRE([gl_PRINTF_FLAG_GROUPING]) AC_REQUIRE([gl_PRINTF_FLAG_GROUPING_INT_PRECISION]) AC_REQUIRE([gl_PRINTF_FLAG_GROUPING_MULTIBYTE]) AC_REQUIRE([gl_PRINTF_FLAG_LEFTADJUST]) AC_REQUIRE([gl_PRINTF_FLAG_ZERO]) AC_REQUIRE([gl_PRINTF_FLAG_ALT_PRECISION_ZERO]) AC_REQUIRE([gl_PRINTF_PRECISION]) AC_REQUIRE([gl_PRINTF_ENOMEM]) gl_cv_func_snprintf_posix=no AC_CHECK_FUNCS([snprintf]) if test $ac_cv_func_snprintf = yes; then gl_SNPRINTF_TRUNCATION_C99 gl_SNPRINTF_RETVAL_C99 gl_SNPRINTF_DIRECTIVE_N gl_SNPRINTF_SIZE1 gl_VSNPRINTF_ZEROSIZE_C99 case "$gl_cv_func_printf_sizes_c99" in *yes) case "$gl_cv_func_printf_sizes_c23" in *yes) case "$gl_cv_func_printf_long_double" in *yes) case "$gl_cv_func_printf_infinite" in *yes) case "$gl_cv_func_printf_infinite_long_double" in *yes) case "$gl_cv_func_printf_directive_a" in *yes) case "$gl_cv_func_printf_directive_b" in *yes) case "$gl_cv_func_printf_directive_f" in *yes) case m4_ifdef([gl_PRINTF_SUPPORT_N_DIRECTIVE],["$gl_cv_func_printf_directive_n"],["yes"]) in *yes) case "$gl_cv_func_printf_directive_ls" in *yes) case "$gl_cv_func_printf_directive_lc" in *yes) case "$gl_cv_func_printf_positions" in *yes) case "$gl_cv_func_printf_flag_grouping" in *yes) case "$gl_cv_func_printf_flag_grouping_int_precision" in *yes) case "$gl_cv_func_printf_flag_grouping_multibyte" in *yes) case "$gl_cv_func_printf_flag_leftadjust" in *yes) case "$gl_cv_func_printf_flag_zero" in *yes) case "$gl_cv_func_printf_flag_alt_precision_zero" in *yes) case "$gl_cv_func_printf_precision" in *yes) case "$gl_cv_func_printf_enomem" in *yes) case "$gl_cv_func_snprintf_truncation_c99" in *yes) case "$gl_cv_func_snprintf_retval_c99" in *yes) case m4_ifdef([gl_PRINTF_SUPPORT_N_DIRECTIVE],["$gl_cv_func_snprintf_directive_n"],["yes"]) in *yes) case "$gl_cv_func_snprintf_size1" in *yes) case "$gl_cv_func_vsnprintf_zerosize_c99" in *yes) # snprintf exists and is # already POSIX compliant. gl_cv_func_snprintf_posix=yes ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac ;; esac fi ])