On 08/15/2014 19:20, Garrett D'Amore wrote:
To get from wchar_t to multibyte string, you do wcstombs(). Note that the
resulting output will only be UTF-8 if the locale is *.UTF-8. (If you're
in a different locale, the multi-byte-string may well be in a different
encoding.
Visually, your code above looks OK, but I'm not sure what's wrong. Is it a
bug in libiconv? My guess is so, since it seems that even if the encoding
was invalid, it shouldn't just dump core. Instead it should return an
error such as EILSEQ.
Admittedly, I have less than perfect confidence in our libiconv
implementation.
OK, wcstombs works. As application locale can be not UTF-8, I'd like to
use iconv later to convert result from application locale to UTF-8.
And receive one more core dump...
int main()
{
char out[1024],res[1024];
int ret;
wchar_t *in;
size_t inlen,outlen;
char *locale;
char *second_part;
size_t outsz=sizeof(out);
char *enc;
iconv_t hdl;
in=L"Привет!";
locale=setlocale(LC_ALL,"");
second_part=strchr(locale,'.');
if(second_part){
enc=strdup(second_part+1);
} else {
enc=strdup(locale);
}
if(enc){
printf("enc is %s\n",enc);
hdl = iconv_open("UTF-8", enc);
if(hdl<0) {
perror("iconv_open");
return -1;
}
ret=wcsrtombs((char*)out,&in,sizeof(out),NULL);
printf("ret is %d\n",ret);
out[ret+1]='\0';
printf("result is %s\n",out);
ret=strlen(out);
iconv(hdl,&out,&ret,&res,&outlen);
printf("%s\n",res);
free(enc);
}
return 0;
}
$ ./test_utf8_mbchar
enc is UTF-8
ret is 13
result is Привет!
Segmentation Fault (core dumped)
...
Core was generated by `./test_utf8_mbchar'.
Program terminated with signal 11, Segmentation fault.
#0 0xfedd06d5 in _icv_iconv () from /usr/lib/iconv/UTF-8%UTF-8.so
(gdb) bt
#0 0xfedd06d5 in _icv_iconv () from /usr/lib/iconv/UTF-8%UTF-8.so
#1 0xfee7dc17 in iconv () from /lib/libc.so.1
#2 0x080510c0 in main ()
--
Best regards,
Alexander Pyhalov,
system administrator of Computer Center of Southern Federal University
-------------------------------------------
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