From: Nigel Stephens <nigel AT algor DOT co DOT uk>
Date: Fri, 26 Aug 94 18:24:43 +0100
To: eliz AT is DOT elta DOT co DOT il
Cc: Nigel Stephens <nigel AT algor DOT co DOT uk>,
        Victor Essers <essersvr AT perth DOT dialix DOT oz DOT au>,
        djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: help 
References: <8855 DOT 9408261234 AT moorgate DOT algor DOT co DOT uk>
	<9408261443 DOT AA12414 AT is DOT elta DOT co DOT il>

eliz AT is DOT elta DOT co DOT il (eliz AT is DOT elta DOT co DOT il) writes:
 > > Speaking of which, I have seen very strange behaviour in a GO32
 > > program, where open() succeeds and returns file descriptor 20, but
 > > calling read() with this descriptor returns errno==EBADF!
 > 
 > Do you have a short program which shows this behavior?  Under what
 > version of DJGPP this happens?

DJGPP 1.12.  Unfortunately the program is not small, it is the
binutils-2.4 version of ld! In this case it is a cross-linker, rather
than DJGPP native, but I imagine that the same would happen with the
DJ linker.  The bfd library maintains a cache of up to 10 open object
files.  When go32 is using more than its normal number of open files
(i.e. it has emu387 and/or gdb mapped in), then the 10th open trips
over this limit (the first open under gdb does return 10).  I solved
the problem by reducing bfd's open file cache limit.

 _________________________________________________________________________
 Nigel Stephens, Algorithmics Ltd, 3 Drayton Park, London, N5 1NU, England
 phone: +44 71 700 3301    fax: +44 71 700 3400   email: nigel AT algor DOT co DOT uk