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From: johnl@ima.UUCP
Newsgroups: comp.compilers
Subject: Re: BLISS
Message-ID: <641@ima.ISC.COM>
Date: Thu, 6-Aug-87 05:19:12 EDT
Article-I.D.: ima.641
Posted: Thu Aug  6 05:19:12 1987
Date-Received: Thu, 13-Aug-87 02:35:10 EDT
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> o BLISS compilers are difficult to implement and the only "public-domain"
> compiler was written in BLISS-10 for the PDP-11
> 
> o We (the DEC developers) didn't do an adequate job of making the language
> "available" to our customers...

It seems to me that a combination of these two factors is the big reason
why BLISS did not make it as a language.  The lack of strong typing did have
its problems, but C started out being almost as casual about this (although
it is now a fairly strongly-typed language, contrary to popular misconception)
and succeeded nevertheless.  In many ways C has succeeded where BLISS failed,
as a high-level language that even the skeptics could accept as a near-total
replacement for assembler.  It seems to me that by far the biggest factor in
the acceptance of C (as opposed to BLISS, I mean) was the existence of a
fairly good compiler in a popular operating system running on a popular and
cheap machine.  It's ironic that said machine was DEC's own PDP11.  If DEC
had invested the effort to build a good native BLISS compiler for the 11 --
*not* a cross-compiler, most PDP11 sites did not have a PDP10 handy! -- and
made it widely available, BLISS might have stolen a lot of C's thunder.

				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,decvax,pyramid}!utzoo!henry
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