iconv() 2.1 -> 2.2 prototype change

[Petr Vandrovec]

Hi,
  was change to iconv() prototype mandated by some standard?
In 2.1, it was

size_t iconv(iconv_t cd, const char** inbuf, size_t* inbytesleft,
             char** outbuf, size_t* outbytesleft);
          
so I could pass constant string into function without big headache.
But in 2.2 it is

size_t iconv(iconv_t cd, char** inbuf, size_t* inbytesleft, ...);

Due to this I have to use really non-portable 
'(char**)(unsigned long)&inbuf' to suppress warning about dropping
'const' modifier :-( Unfortunately, gcc does not have const_cast in
C...
                                        Thanks,
                                            Petr Vandrovec
                                            address@hidden
                                            
P.S.: BTW, on AIX 4.3 (bos430 src/bos/usr/include/iconv.h 1.11),
prototype also contains 'const' - 
extern size_t iconv(iconv_t, const char**, size_t*, char**, size_t*);
I have no other iconv system around.