Date: Sat, 13 Jul 2002 01:07:53 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: e0026813@stud3.tuwien.ac.at Cc: behanna@zbzoom.net, stable@FreeBSD.ORG Subject: Re: GCC/header-related regressions on -STABLE Message-ID: <20020713.010753.51683482.imp@bsdimp.com> In-Reply-To: <20020713003456.GB238@frog.fafoe> References: <Pine.BSF.4.44.0207111354090.22305-100000@pulcherrima.dbai.tuwien.ac.at> <20020712201311.T39095-100000@topperwein.dyndns.org> <20020713003456.GB238@frog.fafoe>
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In message: <20020713003456.GB238@frog.fafoe>
Stefan Farfeleder <e0026813@stud3.tuwien.ac.at> writes:
: On Fri, Jul 12, 2002 at 08:13:50PM -0400, Chris BeHanna wrote:
: > On Thu, 11 Jul 2002, Gerald Pfeifer wrote:
: >
: > > standards/40084 and standards/40402 constitute significant regressions
: > > on -STABLE, which definitely should be fixed for 4.6.1-RELEASE.
Chances are good that 4.6.1-RELEASE won't fix something so trivial. I
have excellent patches to the PCCARD system that fix real problems for
people that won't be included. Chances are good that 4.7-RELEASE will
fix them, however, (both the pccard issue and the compiler issues).
: > > Having three-line C++ programs like the following
: > > #include <iostream>
: > > #include <string>
: > > int main() { }
: > > issue three(!) warnings with g++ -pedantic is A Very Bad Thing[TM],
: > > especially on -STABLE.
: >
: > Should it not at least gripe that there's no return statement in a
: > non-void function?
:
: Both C++ and C99 treat main() specially: leaving the function's scope
: without an explicit "return"-statement means that 0 is returned to the
: implementation.
True, but in C90 (and definitely in K&R)
int main() { }
was more or less the same as:
int main() { return (rand()); }
since whatever was in the magic register that returned the value for
the function was what got returned :-). There's a lot of SYS V code
that had return (0); added to the end of most of the main functions
because of this.
Warner
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