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From: Grant Jacobs
Subject: Porting from DEC pascal to GPC
Date: 7 Feb 2003, 03:40:18

At 1:52 PM +0000 6/2/03, Wood David wrote:
>Rob Koopman  wrote:
[snip]

>We've ported quite a lot of DEC Pascal to GPC without major problems.
>Certainly GPC2.1 hasn't given us problems with segfaults or internal errors
>on both i386 or Alpha platforms.  We have had to do quite a lot of manual
>code conversions though.  Areas which spring to mind that needed changing in
>our code was:
>
>GPC doesn't read enumerated types from files;
>GPC doesn't support the :=ZERO assignment;
>GPC doesn't use file i/o and read qualifiers, especially ERROR:= CONTINUE;
>VARYING [] OF CHAR must be replaced by STRING();
>REAL is best defined as SINGLE;
>VMS runtime library functions aren't available (obviously!).  I can't do key
>detection as I do under VMS
>INHERIT and ENVIRONMENT become INTERFACE/IMPLEMENTATION and USES
>Remove [GLOBAL] and [EXTERNAL]
>[STATIC] becomes static
>No D+0 etc. for double precision exponents
>The only compiler bug - global string definitions in modules don't always
>work yet (I don't think?)
>
>I have code examples of how I've worked around the enumerated type reading
>and ZERO issues if you wish.

I'd like to this is if you're willing. I'm trying to port my old 
Ph.D. project (for old times sake I suspect!)

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