#ifndef REGTEST
-int vsnprintf( char * s, size_t n, const char * format, _PDCLIB_va_list arg )
+int vsnprintf( char * _PDCLIB_restrict s, size_t n, const char * _PDCLIB_restrict format, _PDCLIB_va_list arg )
{
/* TODO: This function should interpret format as multibyte characters. */
/* Members: base, flags, n, i, this, s, width, prec, stream, arg */