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Re: gnu_inline attribute for C++
- From: Ian Lance Taylor <iant at google dot com>
- To: Mark Mitchell <mark at codesourcery dot com>
- Cc: Alexandre Oliva <aoliva at redhat dot com>, gcc-patches at gcc dot gnu dot org, jakub at redhat dot com
- Date: 10 Jul 2007 20:28:03 -0700
- Subject: Re: gnu_inline attribute for C++
- References: <firstname.lastname@example.org> <email@example.com>
Mark Mitchell <firstname.lastname@example.org> writes:
> Doesn't something already check that we don't have DECL_INITIAL for both
> NEW_RESULT and OLD_RESULT? If we have DECL_INITIAL for both, that means
> the function is defined twice, which should be an error. Or does
> gnu_inline allow you to override the definition in the same translation
> unit? That's a pretty nasty complication. I'm not confident that you
> can undo the effects of DECL_INTERFACE_KNOWN and such after the fact, in
> the way that you're trying to do.
The gnu_inline attribute does permit overriding the definition in the
same translation unit. You can see this in action in the gcc sources:
compare the definition of floor_log2 in toplev.h and toplev.c.