Re: charset_to_utf8 assertion of remaining src_size

On 05/22/15 13:18, Cassidy Larson wrote:

We're using FreeBSD 10.1

I see. Yes that's the same problem I have seen.

There is a behavioral difference (I think it's a FreeBSD bug) between FreeBSD's iconv(3) and GNU implementation, and there is arguably a bug with Dovecot that iconv(3) state should be reset for each multipart part. The two together would trigger the problem when the previous part was ended with UTF-7 shift sequence. Timo have applied a fix (hg: 18721:9809f68aaa36) for Dovecot which should mitigates this issue at Dovecot side a few days ago.

I have created a reproduction program and discussed the issue with our iconv(3) developer, Tijl Coosemans , who have created a patch to correct this FreeBSD iconv(3) bug (not yet committed against -HEAD but I'd expect it happening soon).

Cheers,

Xin LI delphij@delphij.net https://www.delphij.net/ FreeBSD - The Power to Serve! Live free or die