On Mon, 23 Jan 2012, Christian Grothoff wrote:

> 5) The bug is not present in curl 7.22.0 but DOES occur in 7.23.0 and
> 7.23.1.

That certainly narrows it down quite significantly. I checked the changes done
to the GnuTLS code in libcurl between those two versions:

$ git log --oneline curl-7_22_0..curl-7_23_0 gtls.c
a873b95 gtls_connect_step1: remove use of deprecated functions
f5bb370 gtls.c: gnutls_transport_set_global_errno() deprecated in version 2.12.3
8036da8 gtls: only call gnutls_transport_set_lowat with <gnutls-2.12.0

... while it isn't completely unimaginable that the bug is due to a change in
a different source module I think these three commits are the prime suspects.

We only had a total of 210 commits in curl between 7.22.0 and 7.23.0 so
bisecting shouldn't be too time consuming if the procedure to get the bug to
appear isn't too slow.

-- 
  / daniel.haxx.se
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