diff options
Diffstat (limited to 'm4/printf.m4')
| -rw-r--r-- | m4/printf.m4 | 180 |
1 files changed, 116 insertions, 64 deletions
diff --git a/m4/printf.m4 b/m4/printf.m4 index 719679c362..1096b87dc2 100644 --- a/m4/printf.m4 +++ b/m4/printf.m4 @@ -1,4 +1,4 @@ -# printf.m4 serial 75 +# printf.m4 serial 76 dnl Copyright (C) 2003, 2007-2023 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -873,6 +873,53 @@ 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 don't produce a NUL byte. +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 glibc 2.35, FreeBSD 13.1, NetBSD 9.0, OpenBSD 7.2, + macOS 12.5, AIX 7.2, Solaris 11.4. + glibc 2.35 bug: <https://sourceware.org/bugzilla/show_bug.cgi?id=30257> */ + { + buf[0] = '\0'; + if (sprintf (buf, "%lc%lc%lc", (wint_t) 'a', (wint_t) 0, (wint_t) 'z') < 0 + || strcmp (buf, "az") != 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 yes on musl libc. + *-musl* | midipix*) gl_cv_func_printf_directive_lc="guessing yes";; + # Guess no otherwise. + *) gl_cv_func_printf_directive_lc="guessing no";; + 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. @@ -1696,18 +1743,19 @@ dnl 6 = gl_PRINTF_DIRECTIVE_B dnl 7 = gl_PRINTF_DIRECTIVE_F dnl 8 = gl_PRINTF_DIRECTIVE_N dnl 9 = gl_PRINTF_DIRECTIVE_LS -dnl 10 = gl_PRINTF_POSITIONS -dnl 11 = gl_PRINTF_FLAG_GROUPING -dnl 12 = gl_PRINTF_FLAG_LEFTADJUST -dnl 13 = gl_PRINTF_FLAG_ZERO -dnl 14 = gl_PRINTF_PRECISION -dnl 15 = gl_PRINTF_ENOMEM -dnl 16 = gl_SNPRINTF_PRESENCE -dnl 17 = gl_SNPRINTF_TRUNCATION_C99 -dnl 18 = gl_SNPRINTF_RETVAL_C99 -dnl 19 = gl_SNPRINTF_DIRECTIVE_N -dnl 20 = gl_SNPRINTF_SIZE1 -dnl 21 = gl_VSNPRINTF_ZEROSIZE_C99 +dnl 10 = gl_PRINTF_DIRECTIVE_LC +dnl 11 = gl_PRINTF_POSITIONS +dnl 12 = gl_PRINTF_FLAG_GROUPING +dnl 13 = gl_PRINTF_FLAG_LEFTADJUST +dnl 14 = gl_PRINTF_FLAG_ZERO +dnl 15 = gl_PRINTF_PRECISION +dnl 16 = gl_PRINTF_ENOMEM +dnl 17 = gl_SNPRINTF_PRESENCE +dnl 18 = gl_SNPRINTF_TRUNCATION_C99 +dnl 19 = gl_SNPRINTF_RETVAL_C99 +dnl 10 = gl_SNPRINTF_DIRECTIVE_N +dnl 21 = gl_SNPRINTF_SIZE1 +dnl 22 = 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... @@ -1718,57 +1766,61 @@ dnl 6 = checking whether printf supports the 'b' directive... dnl 7 = checking whether printf supports the 'F' directive... dnl 8 = checking whether printf supports the 'n' directive... dnl 9 = checking whether printf supports the 'ls' directive... -dnl 10 = checking whether printf supports POSIX/XSI format strings with positions... -dnl 11 = checking whether printf supports the grouping flag... -dnl 12 = checking whether printf supports the left-adjust flag correctly... -dnl 13 = checking whether printf supports the zero flag correctly... -dnl 14 = checking whether printf supports large precisions... -dnl 15 = checking whether printf survives out-of-memory conditions... -dnl 16 = checking for snprintf... -dnl 17 = checking whether snprintf truncates the result as in C99... -dnl 18 = checking whether snprintf returns a byte count as in C99... -dnl 19 = checking whether snprintf fully supports the 'n' directive... -dnl 20 = checking whether snprintf respects a size of 1... -dnl 21 = checking whether vsnprintf respects a zero size as in C99... +dnl 10 = checking whether printf supports the 'lc' directive correctly... +dnl 11 = checking whether printf supports POSIX/XSI format strings with positions... +dnl 12 = checking whether printf supports the grouping flag... +dnl 13 = checking whether printf supports the left-adjust flag correctly... +dnl 14 = checking whether printf supports the zero flag correctly... +dnl 15 = checking whether printf supports large precisions... +dnl 16 = checking whether printf survives out-of-memory conditions... +dnl 17 = checking for snprintf... +dnl 18 = checking whether snprintf truncates the result as in C99... +dnl 19 = checking whether snprintf returns a byte count as in C99... +dnl 20 = checking whether snprintf fully supports the 'n' directive... +dnl 21 = checking whether snprintf respects a size of 1... +dnl 22 = checking whether vsnprintf respects a zero size as in C99... dnl dnl . = yes, # = no. +checking whether snprintf truncates the result as in C99... yes dnl -dnl 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 -dnl glibc 2.5 . . . . . # . . . . . . . . . . . . . . . -dnl glibc 2.3.6 . . . . # # . . . . . . . . . . . . . . . -dnl FreeBSD 13.0 . . . . # # . . . . . . . . # . . . . . . -dnl FreeBSD 5.4, 6.1 . . . . # # . . . . . . # . # . . . . . . -dnl Mac OS X 10.13.5 . . . # # # . # . . . . . . . . . . # . . -dnl Mac OS X 10.5.8 . . . # # # . . . . . . # . . . . . . . . -dnl Mac OS X 10.3.9 . . . . # # . . . . . . # . # . . . . . . -dnl OpenBSD 6.0, 6.7 . . . . # # . . . . . . . . # . . . . . . -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 11.4 . . # # # # . . # . . . # . . . . . . . . -dnl Solaris 11.3 . . . . # # . . # . . . . . . . . . . . . -dnl Solaris 11.0 . . # # # # . . # . . . # . . . . . . . . -dnl Solaris 10 . . # # # # . . # . . . # # . . . . . . . -dnl Solaris 2.6 ... 9 # . # # # # # . # . . . # # . . . # . . . -dnl Solaris 2.5.1 # . # # # # # . # . . . # . . # # # # # # -dnl AIX 7.1 . . # # # # . . . . . . # # . . . . . . . -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 9.0 . . . . # # . . . . . . . . . . . . . . . -dnl NetBSD 5.0 . . . # # # . . . . . . # . # . . . . . . -dnl NetBSD 4.0 . ? ? ? ? # ? . ? . ? ? ? ? ? . . . ? ? ? -dnl NetBSD 3.0 . . . . # # # . ? # # ? # . # . . . . . . -dnl Haiku . . . # # # # . # . . . . . ? . . ? . . . -dnl BeOS # # . # # # # . ? # . ? . # ? . . ? . . . -dnl Android 4.3 . . # # # # # # # . # . # . # . . . # . . -dnl old mingw / msvcrt # # # # # # # . . # # . # # ? . # # # . . -dnl MSVC 9 # # # # # # # # . # # . # # ? # # # # . . -dnl mingw 2009-2011 . # . # . # . . . # # . . . ? . . . . . . -dnl mingw-w64 2011 # # # # # # # . . # # . # # ? . # # # . . +dnl 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 +dnl musl libc 1.2.3 . . . . . # . . . . . . . . . . . . . . . . +dnl glibc 2.35 . . . . . . . . . # . . . . . . . . . . . . +dnl glibc 2.5 . . . . . # . . . # . . . . . . . . . . . . +dnl glibc 2.3.6 . . . . # # . . . # . . . . . . . . . . . . +dnl FreeBSD 13.0 . . . . # # . . . # . . . . . # . . . . . . +dnl FreeBSD 5.4, 6.1 . . . . # # . . . # . . . # . # . . . . . . +dnl Mac OS X 10.13.5 . . . # # # . # . # . . . . . . . . . # . . +dnl Mac OS X 10.5.8 . . . # # # . . . # . . . # . . . . . . . . +dnl Mac OS X 10.3.9 . . . . # # . . . # . . . # . # . . . . . . +dnl OpenBSD 6.0, 6.7 . . . . # # . . . # . . . . . # . . . . . . +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 11.4 . . # # # # . . # # . . . # . . . . . . . . +dnl Solaris 11.3 . . . . # # . . # # . . . . . . . . . . . . +dnl Solaris 11.0 . . # # # # . . # # . . . # . . . . . . . . +dnl Solaris 10 . . # # # # . . # # . . . # # . . . . . . . +dnl Solaris 2.6 ... 9 # . # # # # # . # # . . . # # . . . # . . . +dnl Solaris 2.5.1 # . # # # # # . # # . . . # . . # # # # # # +dnl AIX 7.1 . . # # # # . . . # . . . # # . . . . . . . +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 9.0 . . . . # # . . . # . . . . . . . . . . . . +dnl NetBSD 5.0 . . . # # # . . . # . . . # . # . . . . . . +dnl NetBSD 4.0 . ? ? ? ? # ? . ? # . ? ? ? ? ? . . . ? ? ? +dnl NetBSD 3.0 . . . . # # # . ? # # # ? # . # . . . . . . +dnl Haiku . . . # # # # . # ? . . . . . ? . . ? . . . +dnl BeOS # # . # # # # . ? ? # . ? . # ? . . ? . . . +dnl Android 4.3 . . # # # # # # # ? . # . # . # . . . # . . +dnl old mingw / msvcrt # # # # # # # . . ? # # . # # ? . # # # . . +dnl MSVC 9 # # # # # # # # . ? # # . # # ? # # # # . . +dnl mingw 2009-2011 . # . # . # . . . ? # # . . . ? . . . . . . +dnl mingw-w64 2011 # # # # # # # . . ? # # . # # ? . # # # . . |