[Bug c/54162] Does not accept static global anonymous unions or structs

[joseph at codesourcery dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54162

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2012-08-02 23:23:19 UTC ---
On Thu, 2 Aug 2012, josh at joshtriplett dot org wrote:

> C1X, and numerous other compilers, support static anonymous unions or structs
> at file scope.  For example, the following code should work with a C1X
> compiler:

No it shouldn't.  Anonymous structures and unions are *members* of a 
containing structure or union, not declarations outside such a context; 
see C11 6.7.2.1 paragraph 13.  The constraint in 6.7 paragraph 2 applies: 
"A declaration other than a static_assert declaration shall declare at 
least a declarator (other than the parameters of a function or the members 
of a structure or union), a tag, or the members of an enumeration.".  Your 
union declares none of those.