10.45.65 vfprintf

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9799919799/functions/vfprintf.html

Gnulib module: vfprintf-posix or vfprintf-gnu or stdio-h, nonblocking, sigpipe

Portability problems fixed by either Gnulib module vfprintf-posix or vfprintf-gnu:

Portability problems fixed by Gnulib module vfprintf-gnu:

Portability problems fixed by either Gnulib module vfprintf-posix or vfprintf-gnu and additionally the Gnulib module printf-with-n-directive:

Portability problems fixed by Gnulib module stdio-h or vfprintf-posix or vfprintf-gnu, together with module nonblocking:

Portability problems fixed by Gnulib module stdio-h or vfprintf-posix or vfprintf-gnu, together with module sigpipe:

Portability problems not fixed by Gnulib: