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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/111067] g++.dg/opt/icf{1,2,3}.C tests fail on darwin
Date: Tue, 02 Apr 2024 20:18:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111067

--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> ---
however:

 1) it is not in the gnu:: namespace the tests just have it as [[ ]].
 2) I do not think that the standard has anything to say about how entities=
 at
file scope are ordered in memory (many/most impls. probably use the same or=
der
as the file - but I do not think they are obliged to).
3) it is an ABI break for Darwin (where two global entities are not allowed=
 to
have the same address - although it _is_ possible to tell the linker that o=
ne
is an alias for another - that support is not (yet) available in the FE).

So I am actually asking=20
 - if the extension actually has any useful meaning?
 - if it is an extension it probably should be only available in gnu:: ?=