Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!oliveb!sun!gorodish!guy From: guy@gorodish.Sun.COM (Guy Harris) Newsgroups: comp.std.c Subject: Re: nonportable code or incorrect compilers? Message-ID: <59649@sun.uucp> Date: 13 Jul 88 05:20:41 GMT References: <133@daitc.ARPA> <430@uwovax.uwo.ca> <2973@geac.UUCP> Sender: news@sun.uucp Lines: 37 > >> But your mileage may vary. 4.2BSD VAX, Gould, and Sun-3 produce output: > ^^^^^^^^^^ > >> count is 800, now 800 > > I don't get this at all! I am running on a VAX 8650 under Ultrix 2.0. So? He said "4.2BSD", not "Ultrix 2.0". 4.2BSD and Ultrix 2.0 are different systems; there's certainly no guarantee that any particular bugs in the 4.2BSD compiler are also in the Ultrix 2.0 compiler. One would hope, in fact, that this would *not* be the case.... I see no reason not to take him at his word here; I presume that he, at least, is actually *running* 4.2BSD. > HOWEVER, my sun 3/50 under Sun O/S 3.2 gives the following: > > cc non-optimized count is 800, now 800 > cc optimized count is 800, now 800 I believe this is an old PCC bug; the 4.2BSD VAX and Sun compilers are PCC-based, and the Gould one may be PCC-based as well. I would not be surprised if the Pyramid compiler were *not* PCC-based. My Sun-4/260, and a Sun-3/180 nearby, both running SunOS 4.0, as well as a not-so-nearby Sun386i running SunOS 4.0RRBETA2, all give cc non-optimized count is 800, now 840 cc optimized count is 800, now 840 A 4.3BSD VAX gives cc non-optimized count is 800, now 839 cc optimized count is 800, now 839 Presumably the DEC compiler (if it's not the VAX C compiler, in which case you should get the same results as on VAX/VMS) has had this bug fixed, as have the 4.3BSD compiler and the SunOS compilers.