HelenOS sources

vprintf_length     68 uspace/lib/c/generic/io/asprintf.c 	int ret = vprintf_length(fmt, args);
vprintf_length    211 uspace/lib/c/include/stdio.h extern int vprintf_length(const char *, va_list);
vprintf_length    211 uspace/lib/posix/include/libc/stdio.h extern int vprintf_length(const char *, va_list);