Re: New GB18030 gconv module for glibc (from ThizLinux Laboratory)

["Martin v. Loewis" <martin at v dot loewis dot de>]

> > No, this is wrong.  As I have said, in the Unicode standard, U+33FF
> > is "legal" but "unassigned".  If gb18030.c says it is "illegal", it is
> > glibc's bug.
> 
> No.  This is an incorrect input.  Period.  There is no discussion
> about it.  I've already said that no character which is not in the
> current UnicodeData list must be converted.

Can you then please explain why the attached program prints "33ff" in
the current glibc? It should fail, since it converts a character that
is not in the current UnicodeData.

Regards,
Martin

#include <iconv.h>
#include <stdio.h>

char msg[] = "\xe3\x8f\xbf";
wchar_t result[10];

int main()
{
	iconv_t conv;
	int inbytes = sizeof(msg);
	int outbytes = sizeof(result)*sizeof(wchar_t);
	char *in = msg;
	char *out = (char*)result;
	conv = iconv_open("UCS-4LE","UTF-8");
	if (iconv(conv, &in, &inbytes, &out, &outbytes) == -1){
		perror("iconv");
	} else
		printf("%x\n", result[0]);
}