958479 - Empty (or Chinese!) email body when replying to an email with a UNICODE attachment

Status: UNCONFIRMED

(Thunderbird :: Untriaged, defect)

Description

[Wolf]

Attachment: tb.reg.txt.zip

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 (Beta/Release)
Build ID: 20131205075310

Steps to reproduce:

I got an email with a Windows Registry export attached (which is Unicode encoded) for a configuration check, I replied to this email with some text to the sender.


Actual results:

The initial sender got an email reply with an empty body. My sent folder also contained an email with an empty body.


Expected results:

The text should have been shown.

Additional informations:
* Thunderbird 24.2.0 
* Windows 8.1 64bit

I tried to reconstruct the error as good as possible, so I exported a small bit of my Registry. When Attaching this to an email to myself with some text, and replying it also with some text, I finally receive a Chinese email. I attach the reg file (zipped after adding .txt) I used for this last test.

I searched the TB bugs and found some bugs that probably seem related to this issue
* Bug 173012 
* Bug 540229 
* Bug 859780

Comment 1

[Wayne Mery (:wsmwk)]

do you have a crash stack that firmly ties your issue to https://bugzilla.mozilla.org/show_bug.cgi?id=859780 ??

Comment 2

[Wolf]

No, I was *just guessing* 
The fact that my original issue wasn't reproducible with a smaller unicode attachment let me think of undefined behaviour - so I suspected a buffer overrun...