*printf: Add support for MSVC compiler. * m4/printf.m4 (gl_PRINTF_DIRECTIVE_N): On MSVC, install a handler that handles the exception caused by the %n directive. When cross-compiling, guess no on native Windows. (gl_SNPRINTF_TRUNCATION_C99, gl_SNPRINTF_RETVAL_C99, gl_SNPRINTF_DIRECTIVE_N, gl_SNPRINTF_SIZE1): When snprintf is missing, emulate it through vsnprintf. * m4/vsnprintf-posix.m4 (gl_FUNC_VSNPRINTF_POSIX): Update comment. * doc/posix-functions/dprintf.texi: Update documentation regarding MSVC 9. * doc/posix-functions/fprintf.texi: Likewise. * doc/posix-functions/printf.texi: Likewise. * doc/posix-functions/snprintf.texi: Likewise. * doc/posix-functions/sprintf.texi: Likewise. * doc/posix-functions/swprintf.texi: Likewise. * doc/posix-functions/vdprintf.texi: Likewise. * doc/posix-functions/vfprintf.texi: Likewise. * doc/posix-functions/vprintf.texi: Likewise. * doc/posix-functions/vsnprintf.texi: Likewise. * doc/posix-functions/vsprintf.texi: Likewise. * doc/glibc-functions/asprintf.texi: Likewise. * doc/glibc-functions/obstack_printf.texi: Likewise. * doc/glibc-functions/obstack_vprintf.texi: Likewise. * doc/glibc-functions/vasprintf.texi: Likewise.

--- a/doc/posix-functions/dprintf.texi
+++ b/doc/posix-functions/dprintf.texi
@@ -11,7 +11,7 @@
 @item
 This function is missing on many non-glibc platforms:
 MacOS X 10.5, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11,
-IRIX 6.5, OSF/1 5.1, Solaris 11 2010-11, Cygwin 1.5.x, mingw, Interix 3.5, BeOS.
+IRIX 6.5, OSF/1 5.1, Solaris 11 2010-11, Cygwin 1.5.x, mingw, MSVC 9, Interix 3.5, BeOS.
 @end itemize
 
 Portability problems fixed by Gnulib module @code{dprintf-posix}: