cURL under Windows stops reading data from stdin on ^Z

Under Windows 2000, when sending through FTP data read
by cURL from stdin (curl -T - ftp://hostname.domain <
filename), transfer stops after the first occurence of
0x1A in input stream. Under Linux (Fedora Core 3),
everything is send as expected.
Curl versions:
under Windows: 7.15.0 only (all builds available from
download page at curl.haxx.se, except Cygwin builds,
and one compiled locally from sources under MSYS/MinGW);
under Linux: curl 7.12.3 (i386-redhat-linux-gnu)
libcurl/7.12.3 OpenSSL/0.9.7a zlib/1.2.1.2 libidn/0.5.6
No other tools I use, which are ports from unix,
exhibit such behaviour ("cat < infile > outfile" makes
exact copy of the very file cURL has trouble with).
I believe the problem is with reading data, not
transferring, as the total size reported by cURL in the
progress display is the size of data up to first 0x1A,
not the whole file.

tommink[at]post.pl