From: Duperval Laurent (duperval@ERE.Umontreal.CA)
Date: 05/01/93 

From: duperval@ERE.Umontreal.CA (Duperval Laurent)
Subject: [ANSWER]: [GCC] <stdio.h> question: What is FILE->_cnt?
Date: Sat, 1 May 1993 21:10:21 GMT

Ok, here it is: usage of FILE->_cnt is a non-portable way of verifying that
there is something to be written in the put buffer. I've patched the program
so that it calculates (FILE->_epptr - FILE->_pptr). It compiled without a
hitch but I don't know whether I've ever hit th code or not.

For those interested, I was porting Tcl, TclX and Xf. Tcl and Xf compiled
almost cleanly (I had to do a little tweaking woth Xf). TclX is the one that
had the non-portable code.