short: fixes scratch file error, epsonc error

January 30, 1993

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Installation:

1. Copy /usr/bin/gs to wherever you had gs before. This version
    replaces the original version.

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Fixes:

This is a patched version of ghostscript-2.5.2 for the Amiga. I have
identified 2 problems and provided a work around and a band aid...

Problem 1.

    There is a bug in ixemul.library (v39.45) mktemp(). If you try
    and call mktemp() twice with the same format string, you will
    get the same file name. Bzzt!

    I modified a version of mktemp() I pulled from the BSD sources
    a long while back and built it. I added it to libgs.a and 
    re-linked gs. Voila!

    This problem caused a setdevice error which complained about
    not being able to open a scratch file.

Problem 2.

    The epsconc driver has a memory overrun bug. I have looked hard
    at this code, but not yet found the problem. My band aid fix is
    to force the gs_malloc()'s in the eps_print_page() function to
    allocate 2 additional bytes. These 2 extra bytes catch the overrun.
    This is no way to fix the problem, but it works for now and I'll
    look harder at it later. I might try contacting Aladdin and see
    if they know about this problem already.

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Files:

gs252-patches/    This directory contains files that replace files in
                the original distribution of ghostscript for the
                Amiga. Also, any files supplied as patches in
                ghostscript-2.5.2.lha are superceded by files in
                this release. The files are:

                mktemp.c - my version of mktemp.c modifed from BSD mktemp()

                gdevepsc.c - kludge version of epsonc driver code

                amiga-gcc.mak - the dmake file you need to build gs
                    yourself. Note I hope to remove -DIXEMUL_BUG and
                    -DEPSONC_KLUDGE as I get proper fixes for these
                    problems.

usr/bin/        The patched gs executable is in this directory

README.AMIGA    The revised and updated README file. I added more
                information about using gs. I added the missing
                information about assigning tmp: and I added my
                e-mail address which was missing. Basically, the
                file is re-written. Please read it and tell me
                what I screwed up this time :-)


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Miscellaneous:

Please contact me with problems and/or questions. I will help
if I can.


Rob Tulloh
INTERACTIVE / SHL                 Tel: (512) 343 0376 Ext. 116
9442 Capital of Texas Hwy. North  Fax: (512) 343 1414
Arboretum Plaza One, Suite 700    Net: robtu@itx.isc.com
Austin, Texas 78759