https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111067
--- 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 order 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 one is an alias for another - that support is not (yet) available in the FE). So I am actually asking - if the extension actually has any useful meaning? - if it is an extension it probably should be only available in gnu:: ?
