V Function Classification Cancel ISR Signal Thread va_arg() POSIX 1003.1 No Yes Yes Yes va_copy() POSIX 1003.1 No Yes Yes Yes va_end() POSIX 1003.1 No Yes Yes Yes va_start() POSIX 1003.1 No Yes Yes Yes valloc() QNX Neutrino No No Yes Yes verr() Unix Yes No Yes Yes verrx() Unix Yes No Yes Yes vfork() POSIX 1003.1 XSI No No No No vfprintf() ANSI POSIX 1003.1 Yes No No Yes vfscanf() ANSI POSIX 1003.1 No No No Yes vfwprintf() ANSI POSIX 1003.1 Yes No No Yes vfwscanf() ANSI POSIX 1003.1 No No No Yes vprintf() ANSI POSIX 1003.1 Yes No No Yes vscanf() ANSI POSIX 1003.1 No No No Yes vslog2f() QNX Neutrino No Read the Caveats Yes Yes vslogf() QNX Neutrino Yes No Yes Yes vsnprintf() ANSI POSIX 1003.1 No No Read the Caveats Yes vsprintf() ANSI POSIX 1003.1 No No Read the Caveats Yes vsscanf() ANSI POSIX 1003.1 No No Read the Caveats Yes vswprintf() ANSI POSIX 1003.1 No No Read the Caveats Yes vswscanf() ANSI POSIX 1003.1 No No Read the Caveats Yes vwarn() Unix Yes No Yes Yes vwarnx() Unix Yes No Yes Yes vwprintf() ANSI POSIX 1003.1 Yes No No Yes vwscanf() ANSI POSIX 1003.1 No No No Yes Related linksFull Safety Information