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Re: Why does -Wabi-tag complain when -std=c++03?
- From: Jonathan Wakely <jwakely dot gcc at gmail dot com>
- To: Jeffrey Walton <noloader at gmail dot com>
- Cc: "gcc-help at gcc dot gnu dot org" <gcc-help at gcc dot gnu dot org>
- Date: Thu, 24 Mar 2016 16:03:36 +0000
- Subject: Re: Why does -Wabi-tag complain when -std=c++03?
- Authentication-results: sourceware.org; auth=none
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On 24 March 2016 at 15:24, Jeffrey Walton wrote:
> Here's the actionable item to remove the ambiguity from ABI_CHANGE:
>
> #ifdef MYLIB_ABI_CHANGE
> inline namespace abi2 __attribute ((abi_tag)) {
> class MyType { ... };
> MyType fn();
> }
> #endif
>
> That way, its clear the define is local to the library, and its not
> coming from GCC or the runtime.
ABI_CHANGE is not a valid name for a non-standard macro coming from
GCC or the runtime, because it's not in the reserved namespace.
Maybe you're trying to use the blog post as a tutorial for how to
achieve what you want, but it isn't that, it's just a brief
introduction to the topic. If it doesn't hold your hand through every
step that's because that wasn't its goal. Trying to follow it like a
tutorial isn't going to work.