+2023-03-24 Bruno Haible <bruno@clisp.org>
+
+ snprintf-gnu: New module.
+ * m4/snprintf-posix.m4 (gl_FUNC_SNPRINTF_IS_POSIX): New macro,
+ extracted from gl_FUNC_SNPRINTF_POSIX.
+ (gl_FUNC_SNPRINTF_POSIX): Require it. Invoke
+ gl_PREREQ_VASNPRINTF_WITH_POSIX_EXTRAS.
+ * m4/snprintf-gnu.m4: New file, based on m4/snprintf-posix.m4.
+ * modules/snprintf-gnu: New file, based on modules/vasnprintf-gnu.
+ * doc/posix-functions/snprintf.texi: Mention the new module.
+
2023-03-24 Bruno Haible <bruno@clisp.org>
vsnprintf-gnu: Add tests.
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/snprintf.html}
-Gnulib module: snprintf or snprintf-posix
+Gnulib module: snprintf or snprintf-posix or snprintf-gnu
-Portability problems fixed by either Gnulib module @code{snprintf} or @code{snprintf-posix}:
+Portability problems fixed by either Gnulib module @code{snprintf} or @code{snprintf-posix} or @code{snprintf-gnu}:
@itemize
@item
This function is missing on some platforms:
HP-UX 11, IRIX 6.5, Solaris 9, mingw.
@end itemize
-Portability problems fixed by Gnulib module @code{snprintf-posix}:
+Portability problems fixed by either Gnulib module @code{snprintf-posix} or @code{snprintf-gnu}:
@itemize
@item
This function does not support size specifiers as in C99 (@code{hh}, @code{ll},
HP-UX 11, mingw, MSVC 14.
@end itemize
+Portability problems fixed by Gnulib module @code{snprintf-gnu}:
+@itemize
+@item
+This function does not support the @samp{B} directive on some platforms:
+glibc 2.34, FreeBSD 13.1, NetBSD 9.0, OpenBSD 7.2, macOS 12.5, AIX 7.2, Solaris 11.4, and others.
+@end itemize
+
Portability problems not fixed by Gnulib:
@itemize
@item
--- /dev/null
+# snprintf-gnu.m4 serial 1
+dnl Copyright (C) 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,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_SNPRINTF_GNU],
+[
+ AC_REQUIRE([gl_FUNC_SNPRINTF_IS_POSIX])
+ AC_REQUIRE([gl_PRINTF_DIRECTIVE_UPPERCASE_B])
+ gl_cv_func_snprintf_gnu=no
+ if test $gl_cv_func_snprintf_posix = yes; then
+ case "$gl_cv_func_printf_directive_uppercase_b" in
+ *yes)
+ # snprintf exists and is already POSIX compliant and GNU compatible.
+ gl_cv_func_snprintf_gnu=yes
+ ;;
+ esac
+ fi
+ if test $gl_cv_func_snprintf_gnu = no; then
+ gl_PREREQ_VASNPRINTF_WITH_GNU_EXTRAS
+ gl_REPLACE_VASNPRINTF
+ gl_REPLACE_SNPRINTF
+ fi
+])
-# snprintf-posix.m4 serial 16
+# snprintf-posix.m4 serial 17
dnl Copyright (C) 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,
dnl with or without modifications, as long as this notice is preserved.
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_LONG_DOUBLE])
;;
esac
fi
- if test $gl_cv_func_snprintf_posix = no; then
- gl_PREREQ_VASNPRINTF_LONG_DOUBLE
- gl_PREREQ_VASNPRINTF_INFINITE_DOUBLE
- gl_PREREQ_VASNPRINTF_INFINITE_LONG_DOUBLE
- gl_PREREQ_VASNPRINTF_DIRECTIVE_A
- gl_PREREQ_VASNPRINTF_DIRECTIVE_B
- gl_PREREQ_VASNPRINTF_DIRECTIVE_F
- gl_PREREQ_VASNPRINTF_DIRECTIVE_LS
- gl_PREREQ_VASNPRINTF_DIRECTIVE_LC
- gl_PREREQ_VASNPRINTF_FLAG_GROUPING
- gl_PREREQ_VASNPRINTF_FLAG_LEFTADJUST
- gl_PREREQ_VASNPRINTF_FLAG_ZERO
- gl_PREREQ_VASNPRINTF_PRECISION
- gl_PREREQ_VASNPRINTF_ENOMEM
- gl_REPLACE_VASNPRINTF
- gl_REPLACE_SNPRINTF
- fi
])
--- /dev/null
+Description:
+POSIX and GNU compatible snprintf() function: print formatted output to
+a fixed length string
+
+Comment:
+This module should not be used as a dependency from a test module,
+otherwise when this module occurs as a tests-related module, it will
+have side effects on the compilation of the 'vasnprintf' module, if
+that module occurs among the main modules in lib/.
+
+Files:
+m4/snprintf-gnu.m4
+
+Depends-on:
+snprintf-posix
+
+configure.ac:
+gl_FUNC_SNPRINTF_GNU
+
+Makefile.am:
+
+Include:
+<stdio.h>
+
+License:
+LGPL
+
+Maintainer:
+all