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From: | "T.E.Dickey" <dickey AT clark DOT net> |
Subject: | Re: __attribute__((unused)), gcc get's confused...? |
Newsgroups: | comp.os.msdos.djgpp |
References: | <Pine DOT SUN DOT 3 DOT 91 DOT 990726093100 DOT 27650E AT is> <379CDE99 DOT 3E957B4 AT unb DOT ca> <7nkach$sak AT cs DOT vu DOT nl> |
Organization: | Clark Internet Services, Inc., Ellicott City, MD USA |
User-Agent: | tin/pre-1.4-19990624 ("Dawnrazor") (UNIX) (SunOS/5.6 (sun4u)) |
Lines: | 24 |
Message-ID: | <XLZn3.127$2O3.4229@iad-read.news.verio.net> |
Date: | Thu, 29 Jul 1999 14:43:03 GMT |
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NNTP-Posting-Date: | Thu, 29 Jul 1999 14:43:03 GMT |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
mdruiter AT cs DOT vu DOT nl wrote: > To tell gcc (and other compilers) that an argument is unused _in C++_ > (*not* in C, use __attribute__((unused)) there!), just do not give the > variable a name: > int main(int, char* argv[]) > It might even be specified in the ANSI C++ draft IIRC. ^^^^^ (maybe not - gcc and g++ don't necessarily follow the standard, and I occasionally get patches from people who don't know the difference) In this case though (the documentation that comes with g++ asserts): `unused' This attribute, attached to a function, means that the function is meant to be possibly unused. GNU CC will not produce a warning for this function. GNU C++ does not currently support this attribute as definitions without parameters are valid in C++. -- Thomas E. Dickey dickey AT clark DOT net http://www.clark.net/pub/dickey
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