Re: FILE *yyin=stdin; not ANSI-C??

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Article #2110

#2110

From: Henry Spencer
Date: Fri, 09 Oct 1992 17:12

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In article <1992Oct8.220811.7882@utwente.nl> emmerik@utrcu1.civ.utwente.nl (Emmerik P.J.L. van) writes:
>The following looks to me perfectly legal ANSI-C code.
>
>FILE *yyin = {stdin}, *yyout = {stdout};

Sorry, it's not.  Nothing in ANSI C promises that stdin and stdout are
constants.  Therefore they cannot (portably) be used to initialize
extern/static variables.
-- 
MS-DOS is the OS/360 of the 1980s.      | Henry Spencer @ U of Toronto Zoology
              -Hal W. Hardenbergh (1985)|  henry@zoo.toronto.edu  utzoo!henry

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Newsgroups: comp.std.c
Path: arc1-ca.pugleaf.net!sparky!uunet!utcsri!utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: FILE *yyin=stdin; not ANSI-C??
Message-ID: <Bvv6Gn.KEn@zoo.toronto.edu>
Date: Fri, 9 Oct 1992 17:12:22 GMT
References: <1992Oct8.220811.7882@utwente.nl>
Organization: U of Toronto Zoology
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