vdprintf
========

POSIX specification:
 http://www.opengroup.org/onlinepubs/9699919799/functions/vdprintf.html

Gnulib module: vdprintf or vdprintf-posix

Portability problems fixed by either Gnulib module vdprintf or vdprintf-posix:

  * This function is missing on some 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.

Portability problems fixed by Gnulib module vdprintf-posix:

  * This function does not support size specifiers as in C99 (hh, ll, j, t, z) on some platforms: BeOS.

  * printf of long double numbers is unsupported on some platforms: BeOS.

  * This function does not support the a and A directives on some platforms: glibc-2.3.6, BeOS.

  * This function does not support the F directive on some platforms: BeOS.

  * This function does not support format directives that access arguments in an arbitrary order, such as "%2$s", on some platforms: BeOS.

  * This function does not support precisions larger than 512 or 1024 in integer, floating-point and pointer output on some platforms: AIX 7.1, BeOS.

Portability problems not fixed by Gnulib:

  * On some platforms, this function does not set errno or the stream error indicator on attempts to write to a read-only stream: Cygwin 1.7.9.