Hi. I have a couple of questions about gnulib's support for the printf family.
1. Is the snprintf-posix module helpful in order to use the following portably? length = snprintf (NULL, 0, format, args); str = malloc (length + 1); snprintf (str, length + 1, format, args); The snprintf man page warns of portability problems for the first snprintf invocation above, but snprintf-posix appears to test only vsnprintf's functionality for this purpose by invoking gl_VSNPRINTF_ZEROSIZE_C99. Am I misunderstanding the module? Is it assuming snprintf and vsnprintf will always manage to behave consistently in this respect? 2. Is there any single module that ensures portability of all *printf functions? Or is it worthwhile to maintain a list of modules trimmed to exactly the functions that are currently used? Thanks.
