Hi Tom, in order to help you with this problem, we also need the following
information (as mentioned on the Crypto++ home page):
# stack trace (please copy from the call stack window of your debugger, or
use the "bt" command in gdb)
# a minimal program with a main() function, that reproduces the problem
If the second one is too much trouble, at least copy and paste the section
of code from your application that calls into Crypto++.
--------------------------------------------------
From: "TomF" <[EMAIL PROTECTED]>
Sent: Monday, January 14, 2008 7:30 AM
To: "Crypto++ Users" <[EMAIL PROTECTED]>
Subject: Problem in FileSource, BufferedTransformation, TransferTo2
(Crypto++ 5.5.2, VS.NET 2005)
>
> Hi all,
>
> I'm having a problem using crypto++ 5.5.2 as a replacement for 5.1 in
> an existing application. I did debug into the application and found
> the following:
>
> The application gets caught in an infinite loop in files.cpp Line 67
> to 84. Code is:
>
> while (size && m_stream->good())
> {
> {
> size_t spaceSize = 1024;
> m_space = HelpCreatePutSpace(target, channel, 1,
> UnsignedMin(size_t(0)-1, size), spaceSize);
>
> m_stream->read((char *)m_space, (unsigned int)STDMIN(size,
> (lword)spaceSize));
> }
> m_len = m_stream->gcount();
> size_t blockedBytes;
> output:
> blockedBytes = target.ChannelPutModifiable2(channel, m_space, m_len,
> 0, blocking);
> m_waiting = blockedBytes > 0;
> if (m_waiting)
> return blockedBytes;
> size -= m_len;
> transferBytes += m_len;
> }
>
> size is passed from cryptlib.cpp line 402 and initialized to LWORD_MAX
> in line 401. blocking=true is passed to the TransferTo2 function.
>
> Apparently blockedBytes never is > 0 and m_stream->gcount();
> eventually reaches 0 leaving the application stuck in an infinite
> loop. Lead up to the problem is an attempt to read a private key from
> a file, therefore constructing a FileSource on the file.
>
> Did anyone ever see such a problem or has a clue for me to get around
> that problem?
>
> Regards
> Tom
>
> >
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