Article View: comp.sys.ibm.pc.rt
Article #410Re: void * not handled in AIX C compiler ?
From: Johann Schweigl
Date: Fri, 06 Oct 1989 04:28
Date: Fri, 06 Oct 1989 04:28
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2082 bytes
From article <2398@ibmpa.UUCP>, by webb@bass.tcspa.ibm.com (Bill Webb):
>
> If the AIX compiler claims to be ANSI (I'm not sure if it does), then
> I'd suggest that you do report it as a bug and see if you can get it fixed.
I've got a number of good explanations to this question.
I sum up by citing Karl Heuer:
---
I believe that AIX C is not intended to be an ANSI C compiler.
(Which is currently right -- johnny)
AIX C supports "void" because it's been part of the language for a decade.
It does not support declaring variables as "void *" because this is
a recent invention, and the compiler has not yet been upgraded to support
ANSI C.
Despite appearances, it does not support "void *" in a typecast,
either. The compiler accepts the construct, but it doesn't behave the
way X3J11 says.
The reason that "void *" isn't even accepted in a declaration is because
of an implementation detail of the compiler. Since "void *" was a
meaningless type in pre-ANSI C, the compiler used that particular
bit-pattern internally to mean "no type", i.e. for undeclared variables.
---
Thanks to you all, johnny
--
This does not reflect the | Johann Schweigl | DOS machines?
opinions of my employer. | johnny@edvvie.at | I don't hate DOS machines.
I am busy enough by talking | | I just feel better when I
about my own ... | EDVG Vienna | don't see one ...
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!apple!bloom-beacon!eru!luth!sunic!mcsun!tuvie!edvvie!eliza!johnny From: johnny@edvvie.at (Johann Schweigl) Newsgroups: comp.sys.ibm.pc.rt,comp.unix.aix,comp.lang.c Subject: Re: void * not handled in AIX C compiler ? Message-ID: <169@eliza.edvvie.at> Date: 6 Oct 89 04:28:43 GMT References: <2398@ibmpa.UUCP> Organization: Edv GesmbH, Austria/Europa Lines: 32